Initial commit

.env

@@ -0,0 +1,2 @@
+DATABASE_URL="sqlite://sqlite.db"
+RUST_BACKTRACE=1

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -0,0 +1,7 @@
+.direnv
+result
+target
+
+# Added by cargo
+
+/target

Cargo.toml

@@ -0,0 +1,40 @@
+[package]
+name = "sneedstr"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+argon2 = "0.5.2"
+async-trait = "0.1.73"
+chrono = "0.4.31"       
+tokio = { version = "1", features = ["full"] }
+warp = { varsion = "0.3.3", features = ["tls"] }
+validator = { version = "0.16", features = ["derive"] }
+tokio-stream = "0.1.14"
+futures-util = "0.3.28"
+rustls = "0.21"
+anyhow = "1.0"
+sled = "0.34.7"
+sqlx = { version = "0.7", features = [ "runtime-tokio", "tls-rustls", "sqlite", "migrate", "macros"] }
+flexi_logger = { version = "0.27.3", features = [ "async", "compress" ] }
+lazy_static = "1.4.0"
+log = "0.4"
+nostr = "0.26.0"
+regex = "1.9.5"
+sailfish = "0.7.0"
+sea-query = { version = "0.30.4", features = ["backend-sqlite", "thread-safe"] }
+sea-query-binder = { version = "0.5.0", features = ["sqlx-sqlite"] }
+serde = "1.0"
+serde_json = "1.0"
+thiserror = "1.0.48"
+flexbuffers = "2.0.0"
+uuid = { version = "1.3.1", features = ["v4", "fast-rng"] }
+
+[profile.release]
+opt-level = 'z'     # Optimize for size
+lto = true          # Enable link-time optimization
+codegen-units = 1   # Reduce number of codegen units to increase optimizations
+panic = 'abort'     # Abort on panic
+strip = true        # Strip symbols from binary*

LICENSE

@@ -0,0 +1,8 @@
+Copyright (C) 2024 Klink
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3.
+
+The above copyright notice, this permission notice and the word "NIGGER" shall be included in all copies or substantial portions of the Software.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>

flake.lock

@@ -0,0 +1,93 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "naersk": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1698420672,
+        "narHash": "sha256-/TdeHMPRjjdJub7p7+w55vyABrsJlt5QkznPYy55vKA=",
+        "owner": "nix-community",
+        "repo": "naersk",
+        "rev": "aeb58d5e8faead8980a807c840232697982d47b9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1703438236,
+        "narHash": "sha256-aqVBq1u09yFhL7bj1/xyUeJjzr92fXVvQSSEx6AdB1M=",
+        "path": "/nix/store/5acdh8xyry0kdvp6xla2hw7wf3zkphkl-source",
+        "rev": "5f64a12a728902226210bf01d25ec6cbb9d9265b",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1703499205,
+        "narHash": "sha256-lF9rK5mSUfIZJgZxC3ge40tp1gmyyOXZ+lRY3P8bfbg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,52 @@
+{
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    naersk.url = "github:nix-community/naersk";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs = { self, flake-utils, naersk, nixpkgs }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = (import nixpkgs) { inherit system; };
+
+        naersk' = pkgs.callPackage naersk { };
+
+        wwwPath = "www";
+        templatesPath = "templates";
+
+      in rec {
+        # For `nix build` & `nix run`:
+        defaultPackage = naersk'.buildPackage {
+          src = ./.;
+          nativeBuildInputs = with pkgs; [ pkg-config openssl sqlite ];
+          GIT_HASH = "000000000000000000000000000000";
+          postInstall = ''
+            mkdir -p $out/templates
+            mkdir -p $out/www
+            cp -r ${wwwPath} $out/
+            cp -r ${templatesPath} $out/
+          '';
+        };
+
+        # For `nix develop`:
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [
+            rustc
+            cargo
+            cargo-watch
+            clippy
+            rustfmt
+            rust-analyzer
+            pkg-config
+
+            openssl
+            sqlite
+          ];
+          env = {
+            DATABASE_URL = "sqlite://sqlite.db";
+            RUST_BACKTRACE = 1;
+          };
+        };
+      });
+}

src/bussy/mod.rs

@@ -0,0 +1,143 @@
+use crate::{
+    noose::user::{User, UserRow},
+    utils::{error::Error, structs::Subscription},
+};
+use nostr::secp256k1::XOnlyPublicKey;
+use std::{collections::HashMap, fmt::Debug};
+use tokio::sync::{broadcast, Mutex};
+
+pub mod channels {
+    pub static MSG_NOOSE: &str = "MSG_NOOSE";
+    pub static MSG_NIP05: &str = "MSG_NIP05";
+    pub static MSG_RELAY: &str = "MSG_RELAY";
+    pub static MSG_PIPELINE: &str = "MSG_PIPELINE";
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum Command {
+    // DbRequest
+    DbReqWriteEvent(Box<nostr::Event>),
+    DbReqFindEvent(/* client_id*/ uuid::Uuid, Subscription),
+    DbReqDeleteEvents(/* event ids */ Vec<String>),
+
+    // Old messages
+    DbReqInsertUser(UserRow),
+    DbReqGetUser(User),
+    DbReqCreateAccount(XOnlyPublicKey, String, String),
+    DbReqGetAccount(String),
+    DbReqClear,
+    // DbResponse
+    DbResRelayMessage(
+        /* client_id*/ uuid::Uuid,
+        /* Vec<RelayMessage::Event> */ Vec<String>,
+    ),
+    DbResInfo,
+    DbResOk,
+    DbResOkWithStatus(String),
+    DbResAccount, // TODO: Add Account DTO as a param
+    DbResUser(UserRow),
+    // Event Pipeline
+    PipelineReqEvent(/* client_id */ uuid::Uuid, Box<nostr::Event>),
+    PipelineResRelayMessageOk(/* client_id */ uuid::Uuid, nostr::RelayMessage),
+    PipelineResStreamOutEvent(Box<nostr::Event>),
+    PipelineResOk,
+    // Other
+    Str(String),
+    ServiceError(Error),
+    Noop,
+}
+
+#[derive(Debug, Clone)]
+pub struct Message {
+    pub source: &'static str,
+    pub content: Command,
+}
+
+#[derive(Debug)]
+pub struct PubSub {
+    subscribers: Mutex<HashMap<String, Vec<broadcast::Sender<Message>>>>,
+}
+
+impl Default for PubSub {
+    fn default() -> Self {
+        panic!("Use PubSub::new() to initialize PubSub");
+    }
+}
+
+impl PubSub {
+    pub fn new() -> Self {
+        PubSub {
+            subscribers: Mutex::new(HashMap::new()),
+        }
+    }
+
+    pub async fn subscribe(&self, topic: &str) -> broadcast::Receiver<Message> {
+        let (tx, _rx) = broadcast::channel(32); // 32 is the channel capacity
+        let mut subscribers = self.subscribers.lock().await;
+        subscribers
+            .entry(topic.to_string())
+            .or_insert_with(Vec::new)
+            .push(tx.clone());
+        tx.subscribe()
+    }
+
+    pub async fn publish(&self, topic: &str, message: Message) {
+        let mut subscribers = self.subscribers.lock().await;
+        if let Some(queue) = subscribers.get_mut(topic) {
+            for sender in queue.iter() {
+                sender.send(message.clone()).ok();
+            }
+        }
+    }
+}
+
+// #[cfg(test)]
+// mod tests {
+//     use super::channels;
+//     use crate::bussy::{Command, Message, PubSub};
+//     use std::sync::Arc;
+
+//     #[tokio::test]
+//     async fn create_bus() {
+//         let pubsub = Arc::new(PubSub::new());
+
+//         let mut subscriber1 = pubsub.subscribe(channels::MSG_NIP05).await;
+//         let mut subscriber2 = pubsub.subscribe(channels::MSG_NOOSE).await;
+
+//         tokio::spawn(async move {
+//             while let Ok(message) = subscriber1.recv().await {
+//                 println!("Subscriber1 received: {:?}", message);
+//             }
+//         });
+
+//         tokio::spawn(async move {
+//             while let Ok(message) = subscriber2.recv().await {
+//                 println!("Subscriber2 received: {:?}", message);
+//             }
+//         });
+
+//         pubsub
+//             .publish(
+//                 channels::MSG_NIP05,
+//                 Message {
+//                     source: "test",
+//                     content: Command::Str("Hello S1".to_string()),
+//                 },
+//             )
+//             .await;
+//         pubsub
+//             .publish(
+//                 channels::MSG_NOOSE,
+//                 Message {
+//                     source: "test",
+//                     content: Command::Str("Hello S2".to_string()),
+//                 },
+//             )
+//             .await;
+
+//         dbg!(pubsub);
+
+//         // Sleep to keep the main thread alive while messages are processed in the background.
+//         tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+//     }
+// }

src/main.rs

@@ -0,0 +1,51 @@
+#![allow(dead_code)]
+#![allow(unused_variables)]
+
+use std::thread;
+pub mod bussy;
+mod noose;
+mod relay;
+mod usernames;
+pub mod utils;
+
+use bussy::PubSub;
+use flexi_logger::Logger;
+
+use crate::utils::structs::Context;
+
+#[macro_use]
+extern crate lazy_static;
+
+fn main() {
+    // Logger init
+    let _logger = Logger::try_with_env_or_str("info")
+        .unwrap()
+        .log_to_stdout()
+        .duplicate_to_stderr(flexi_logger::Duplicate::Warn)
+        .write_mode(flexi_logger::WriteMode::Async)
+        .start()
+        .unwrap();
+
+    // Services
+    let ctx_db = Context::new();
+    let ctx_relay = ctx_db.clone();
+    let ctx_usernames = ctx_relay.clone();
+
+    let db_handle = thread::spawn(move || {
+        noose::start(ctx_db);
+    });
+
+    let relay_handle = thread::spawn(move || {
+        relay::start(ctx_relay);
+    });
+
+    let nip05_handle = thread::spawn(move || {
+        usernames::start(ctx_usernames);
+    });
+
+    db_handle.join().unwrap();
+    relay_handle.join().unwrap();
+    nip05_handle.join().unwrap();
+
+    println!("Done");
+}

src/noose/db.rs

@@ -0,0 +1,18 @@
+use crate::{
+    bussy::PubSub,
+    utils::{error::Error, structs::Subscription},
+};
+use async_trait::async_trait;
+use nostr::Event;
+use std::sync::Arc;
+
+#[async_trait]
+pub trait Noose: Send + Sync {
+    async fn start(&mut self, pubsub: Arc<PubSub>) -> Result<(), Error>;
+
+    async fn migration_up(&self);
+
+    async fn write_event(&self, event: Box<Event>) -> Result<String, Error>;
+
+    async fn find_event(&self, subscription: Subscription) -> Result<Vec<String>, Error>;
+}

src/noose/migrations/1697409647688_create_events.sql

@@ -0,0 +1,23 @@
+CREATE TABLE events (
+    id TEXT PRIMARY KEY,
+    kind INTEGER NOT NULL,
+    pubkey TEXT NOT NULL,
+    content TEXT NOT NULL,
+    created_at INTEGER NOT NULL,
+    tags TEXT NOT NULL,
+    sig TEXT NOT NULL
+);
+
+CREATE INDEX idx_events_kind ON events (kind);
+CREATE INDEX idx_events_pubkey ON events (pubkey);
+
+
+CREATE TABLE tags (
+    tag TEXT NOT NULL,
+    value TEXT NOT NULL,
+    event_id TEXT REFERENCES events(id) ON DELETE CASCADE
+);
+
+CREATE INDEX idx_tags_tag ON tags (tag);
+CREATE INDEX idx_tags_value ON tags (value);
+CREATE INDEX idx_tags_event_id ON tags (event_id);

src/noose/migrations/1697410161900_add_relays.sql

@@ -0,0 +1,5 @@
+CREATE TABLE relays (
+    url TEXT PRIMARY KEY,
+    domain TEXT NOT NULL,
+    active BOOLEAN NOT NULL
+);

src/noose/migrations/1697410223576_events_fts.sql

@@ -0,0 +1 @@
+CREATE VIRTUAL TABLE events_fts USING fts5(id, content);

src/noose/migrations/1697410294265_users.sql

@@ -0,0 +1,10 @@
+CREATE TABLE users (
+    pubkey TEXT PRIMARY KEY,
+    username TEXT NOT NULL UNIQUE,
+    inserted_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    admin BOOLEAN DEFAULT false
+);
+
+CREATE INDEX idx_users_pubkey ON users (pubkey);
+CREATE INDEX idx_users_username ON users (username);
+

src/noose/migrations/1697410424624_pragma.sql

@@ -0,0 +1,2 @@
+PRAGMA foreign_keys = ON;
+PRAGMA auto_vacuum = FULL;

src/noose/migrations/1697410480767_unattached_media.sql

@@ -0,0 +1,11 @@
+CREATE TABLE unattached_media (
+    id TEXT PRIMARY KEY,
+    pubkey TEXT NOT NULL,
+    url TEXT NOT NULL,
+    data TEXT NOT NULL,
+    uploaded_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX unattached_media_id ON unattached_media (id);
+CREATE INDEX unattached_media_pubkey ON unattached_media (pubkey);
+CREATE INDEX unattached_media_url ON unattached_media (url);

src/noose/mod.rs

@@ -0,0 +1,33 @@
+use crate::utils::structs::Context;
+use tokio::runtime;
+
+use db::Noose;
+use pipeline::Pipeline;
+
+pub mod db;
+pub mod pipeline;
+// mod sled;
+mod sqlite;
+pub mod user;
+
+pub fn start(context: Context) {
+    let rt = runtime::Runtime::new().unwrap();
+
+    rt.block_on(async move {
+        let pipeline_pubsub = context.pubsub.clone();
+        let db_pubsub = context.pubsub.clone();
+
+        let pipeline_handle = tokio::task::spawn(async move {
+            let mut pipeline = Pipeline::new(pipeline_pubsub);
+            pipeline.start().await.unwrap();
+        });
+
+        let sqlite_writer_handle = tokio::task::spawn(async move {
+            let mut db_writer = sqlite::SqliteDb::new().await;
+            db_writer.start(db_pubsub).await.unwrap();
+        });
+
+        sqlite_writer_handle.await.unwrap();
+        pipeline_handle.await.unwrap();
+    });
+}

src/noose/pipeline.rs

@@ -0,0 +1,166 @@
+use crate::bussy::{channels, Command, Message, PubSub};
+use crate::utils::error::Error;
+use nostr::Event;
+use std::sync::Arc;
+
+pub struct Pipeline {
+    pubsub: Arc<PubSub>,
+}
+
+impl Pipeline {
+    pub fn new(pubsub: Arc<PubSub>) -> Self {
+        Self { pubsub }
+    }
+
+    pub async fn start(&mut self) -> Result<(), Error> {
+        let mut subscriber = self.pubsub.subscribe(channels::MSG_PIPELINE).await;
+
+        while let Ok(message) = subscriber.recv().await {
+            log::debug!("[Pipeline] received message: {:?}", message);
+            let command = match message.content {
+                Command::PipelineReqEvent(client_id, event) => {
+                    match self.handle_event(client_id, event.clone()).await {
+                        Ok(_) => {
+                            let message =
+                                nostr::RelayMessage::new_ok(event.id, true, "".to_string());
+                            Command::PipelineResRelayMessageOk(client_id, message)
+                        }
+                        Err(e) => Command::ServiceError(e),
+                    }
+                }
+                _ => Command::Noop,
+            };
+            if command != Command::Noop {
+                let channel = message.source;
+                let message = Message {
+                    source: channels::MSG_PIPELINE,
+                    content: command,
+                };
+
+                log::info!(
+                    "[Pipeline] channel: {} - publishing new message: {:?}",
+                    channel,
+                    message
+                );
+
+                self.pubsub.publish(channel, message).await;
+            }
+        }
+
+        Ok(())
+    }
+
+    pub async fn handle_event(
+        &self,
+        client_id: uuid::Uuid,
+        event: Box<Event>,
+    ) -> Result<(), Error> {
+        let store_event_task = self.store_event(event.clone());
+        let process_deletions_task = self.process_deletions(event.clone());
+        let track_hashtags_task = self.track_hashtags(event.clone());
+        let process_media_task = self.process_media(event.clone());
+        let stream_out_task = self.stream_out(event.clone());
+        let broadcast_task = self.broadcast(event.clone());
+
+        let (
+            store_event_result,
+            process_deletions_result,
+            track_hashtags_result,
+            process_media_result,
+            stream_out_result,
+            broadcast_result,
+        ) = tokio::join!(
+            store_event_task,
+            process_deletions_task,
+            track_hashtags_task,
+            process_media_task,
+            stream_out_task,
+            broadcast_task
+        );
+
+        match (
+            store_event_result,
+            process_deletions_result,
+            track_hashtags_result,
+            process_media_result,
+            stream_out_result,
+            broadcast_result,
+        ) {
+            (Ok(_), Ok(_), Ok(_), Ok(_), Ok(_), Ok(_)) => {
+                log::info!("[Pipeline] Tasks finished successfully");
+                Ok(())
+            }
+            _ => {
+                log::error!("[Pipeline] One or more futures returned an error.");
+                Err(Error::internal_with_message(
+                    "[Pipeline] One or more futures returned an error.",
+                ))
+            }
+        }
+    }
+
+    async fn store_event(&self, event: Box<Event>) -> Result<(), Error> {
+        if event.kind.is_ephemeral() {
+            return Ok(());
+        }
+
+        self.pubsub
+            .publish(
+                channels::MSG_NOOSE,
+                Message {
+                    source: channels::MSG_PIPELINE,
+                    content: Command::DbReqWriteEvent(event),
+                },
+            )
+            .await;
+
+        Ok(())
+    }
+
+    async fn process_deletions(&self, event: Box<Event>) -> Result<(), Error> {
+        // if event.kind.as_u32() == 5 {
+        //     let events_for_deletion: Vec<String> = event
+        //         .tags
+        //         .iter()
+        //         .filter_map(|tag| match tag {
+        //             nostr::Tag::Event(event_id, _, _) => Some(event_id.to_string()),
+        //             _ => None,
+        //         })
+        //         .collect();
+
+        //     self.pubsub
+        //         .publish(
+        //             channels::MSG_NOOSE,
+        //             Message {
+        //                 source: channels::MSG_PIPELINE,
+        //                 content: Command::DbReqDeleteEvents(events_for_deletion),
+        //             },
+        //         )
+        //         .await;
+        // }
+
+        Ok(())
+    }
+
+    async fn track_hashtags(&self, event: Box<Event>) -> Result<(), Error> {
+        Ok(())
+    }
+
+    async fn process_media(&self, event: Box<Event>) -> Result<(), Error> {
+        Ok(())
+    }
+
+    async fn stream_out(&self, event: Box<Event>) -> Result<(), Error> {
+        let message = Message {
+            source: channels::MSG_PIPELINE,
+            content: Command::PipelineResStreamOutEvent(event),
+        };
+        self.pubsub.publish(channels::MSG_RELAY, message).await;
+
+        Ok(())
+    }
+
+    async fn broadcast(&self, event: Box<Event>) -> Result<(), Error> {
+        Ok(())
+    }
+}

src/noose/sled.rs

@@ -0,0 +1,234 @@
+use super::db::Noose;
+use crate::bussy::{channels, Command, Message, PubSub};
+use crate::utils::error::Error;
+use crate::utils::structs::Subscription;
+use async_trait::async_trait;
+use nostr::Event;
+use serde::Serialize;
+use std::sync::Arc;
+
+use super::user::{User, UserRow};
+
+// Db Interface
+pub struct SledDb {
+    db: sled::Db,
+    events: sled::Tree,
+    nip05s: sled::Tree,
+    pub users: sled::Tree,
+
+    index: sled::Db,
+}
+
+impl SledDb {
+    pub fn new() -> Self {
+        let db = sled::open("/tmp/sled_db").unwrap();
+        let events = db.open_tree("events").unwrap();
+        let nip05s = db.open_tree("identifiers").unwrap();
+        let accounts = db.open_tree("accounts").unwrap();
+
+        let index = sled::open("/tmp/sled_index").unwrap();
+
+        Self {
+            db,
+            events,
+            nip05s,
+            users: accounts,
+            index,
+        }
+    }
+
+    fn clear_db(&self) -> Result<(), sled::Error> {
+        self.db.clear()
+    }
+
+    fn clear_index(&self) -> Result<(), sled::Error> {
+        self.index.clear()
+    }
+
+    async fn insert_user(&self, user: UserRow) -> Result<(), Error> {
+        let pubkey = user.pubkey.clone();
+        let username = user.username.clone();
+
+        if let Ok(Some(_)) = self.nip05s.get(&username) {
+            return Err(Error::internal_with_message("User already exists"));
+        }
+
+        let mut user_buff = flexbuffers::FlexbufferSerializer::new();
+        user.serialize(&mut user_buff).unwrap();
+
+        self.nip05s.insert(&username, user_buff.view()).unwrap();
+
+        let prefix = "nip05:";
+        let key = format!("{}{}", prefix, pubkey);
+        self.index.insert(key, username.as_bytes()).unwrap();
+
+        Ok(())
+    }
+
+    async fn get_user(&self, user: User) -> Result<UserRow, Error> {
+        let mut user_row = None;
+        if let Some(username) = user.name {
+            if let Ok(Some(buff)) = self.nip05s.get(username) {
+                let b = flexbuffers::from_slice::<UserRow>(&buff).unwrap();
+                user_row = Some(b);
+            }
+        } else if let Some(pubkey) = user.pubkey {
+            let prefix = "nip05:";
+            let reference = format!("{}{}", prefix, pubkey);
+            if let Ok(Some(row)) = self.index.get(reference) {
+                let key = String::from_utf8(row.to_vec()).unwrap();
+
+                if let Ok(Some(buff)) = self.nip05s.get(key) {
+                    let b = flexbuffers::from_slice::<UserRow>(&buff).unwrap();
+
+                    user_row = Some(b);
+                }
+            }
+        }
+        match user_row {
+            Some(user) => Ok(user),
+            None => Err(Error::internal_with_message("User not found")),
+        }
+    }
+}
+
+#[async_trait]
+impl Noose for SledDb {
+    async fn start(&mut self, pubsub: Arc<PubSub>) -> Result<(), Error> {
+        let mut subscriber = pubsub.subscribe(channels::MSG_NOOSE).await;
+
+        while let Ok(message) = subscriber.recv().await {
+            log::info!("noose subscriber received: {:?}", message);
+            let command = match message.content {
+                Command::DbReqInsertUser(user) => match self.insert_user(user).await {
+                    Ok(_) => Command::DbResOk,
+                    Err(e) => Command::ServiceError(e),
+                },
+                Command::DbReqGetUser(user) => match self.get_user(user).await {
+                    Ok(user) => Command::DbResUser(user),
+                    Err(e) => Command::ServiceError(e),
+                },
+                Command::DbReqWriteEvent(event) => match self.write_event(event).await {
+                    Ok(_) => Command::DbResOk,
+                    Err(e) => Command::ServiceError(e),
+                },
+                _ => Command::Noop,
+            };
+            if command != Command::Noop {
+                log::info!("Publishing new message");
+                let channel = message.source;
+
+                pubsub
+                    .publish(
+                        channel,
+                        Message {
+                            source: channels::MSG_NOOSE,
+                            content: command,
+                        },
+                    )
+                    .await;
+            }
+        }
+
+        Ok(())
+    }
+
+    async fn migration_up(&self) {}
+
+    async fn write_event(&self, event: Box<Event>) -> Result<String, Error> {
+        let mut event_buff = flexbuffers::FlexbufferSerializer::new();
+        event.serialize(&mut event_buff).unwrap();
+
+        self.events.insert(event.id, event_buff.view()).unwrap();
+        {
+            // Timestamp
+            let key = format!("created_at:{}|#e:{}", event.created_at, event.id);
+            self.index.insert(key, event.id.as_bytes()).unwrap();
+        }
+
+        {
+            // Author, pubkeys #p
+            let key = format!("#author:{}|#e:{}", event.pubkey, event.id);
+            self.index.insert(key, event.id.as_bytes()).unwrap();
+            // self.index.scan_prefix(
+        }
+
+        {
+            // Kinds
+            let key = format!("#k:{}|#e:{}", event.kind, event.id);
+            self.index.insert(key, event.id.as_bytes()).unwrap();
+            // self.index.scan_prefix(
+        }
+
+        {
+            // Tags
+            event.tags.iter().for_each(|tag| {
+                if let Some(key) = match tag {
+                    // #e tag
+                    nostr::Tag::Event(event_id, _, _) => Some(format!("#e:{}", event_id)),
+                    // #p tag
+                    nostr::Tag::PubKey(pubkey, _) => Some(format!("#p:{}|#e:{}", pubkey, event.id)),
+                    // #t tag
+                    nostr::Tag::Hashtag(hashtag) => Some(format!("#t:{}|#e:{}", hashtag, event.id)),
+                    // #a tag
+                    nostr::Tag::A {
+                        kind,
+                        public_key,
+                        identifier,
+                        relay_url,
+                    } => Some(format!(
+                        "#a:kind:{}|#a:pubkey:{}#a:identifier:{}|#e:{}",
+                        kind, public_key, identifier, event.id
+                    )),
+                    _ => None,
+                } {
+                    self.index.insert(key, event.id.as_bytes()).unwrap();
+                }
+            });
+
+            // let key = format!("#t:{}|#e:{}", event.kind, event.id);
+            // self.index.insert(key, event.id.as_bytes()).unwrap();
+            // self.index.scan_prefix(
+        }
+
+        let message = format!("[\"OK\", \"{}\", true, \"\"]", event.id.to_string());
+        Ok(message)
+    }
+
+    async fn find_event(&self, subscription: Subscription) -> Result<Vec<String>, Error> {
+        todo!()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::SledDb;
+    use crate::{
+        bussy::PubSub,
+        noose::user::{User, UserRow},
+    };
+    use std::sync::Arc;
+
+    #[tokio::test]
+    async fn get_db_names() {
+        let pubsub = Arc::new(PubSub::new());
+
+        let db = SledDb::new();
+
+        let pk = "npub1p3ya99jfdafnqlk87p6wfd36d2nme5mkld769rhd9pkht6hmqlaq6mzxdu".to_string();
+        let username = "klink".to_string();
+        let user = UserRow::new(pk, username, false);
+        let result = db.insert_user(user).await;
+
+        let pubkey = "npub1p3ya99jfdafnqlk87p6wfd36d2nme5mkld769rhd9pkht6hmqlaq6mzxdu".to_string();
+        let username = "klink".to_string();
+        let user = User {
+            name: None,
+            pubkey: Some(pubkey),
+        };
+        let user = db.get_user(user).await;
+
+        db.clear_db().unwrap();
+        db.clear_index().unwrap();
+    }
+}

src/noose/sqlite.rs

@@ -0,0 +1,889 @@
+use async_trait::async_trait;
+use nostr::{Event, JsonUtil};
+use sea_query::{extension::sqlite::SqliteExpr, Query};
+use sea_query_binder::SqlxBinder;
+use sqlx::sqlite::{Sqlite, SqlitePoolOptions};
+use sqlx::FromRow;
+use sqlx::{migrate::MigrateDatabase, Pool};
+use std::sync::Arc;
+
+use super::db::Noose;
+use crate::bussy::{channels, Command, Message, PubSub};
+use crate::utils::{error::Error, structs::Subscription};
+
+enum EventsTable {
+    Table,
+    EventId,
+    Kind,
+    Pubkey,
+    Content,
+    CreatedAt,
+    Tags,
+    Sig,
+}
+
+impl sea_query::Iden for EventsTable {
+    fn unquoted(&self, s: &mut dyn std::fmt::Write) {
+        write!(
+            s,
+            "{}",
+            match self {
+                Self::Table => "events",
+                Self::EventId => "id",
+                Self::Kind => "kind",
+                Self::Pubkey => "pubkey",
+                Self::Content => "content",
+                Self::CreatedAt => "created_at",
+                Self::Tags => "tags",
+                Self::Sig => "sig",
+            }
+        )
+        .unwrap()
+    }
+}
+
+enum EventsFTSTable {
+    Table,
+    EventId,
+    Content,
+}
+
+impl sea_query::Iden for EventsFTSTable {
+    fn unquoted(&self, s: &mut dyn std::fmt::Write) {
+        write!(
+            s,
+            "{}",
+            match self {
+                Self::Table => "events_fts",
+                Self::EventId => "id",
+                Self::Content => "content",
+            }
+        )
+        .unwrap()
+    }
+}
+
+enum TagsTable {
+    Table,
+    Tag,
+    Value,
+    EventId,
+}
+
+impl sea_query::Iden for TagsTable {
+    fn unquoted(&self, s: &mut dyn std::fmt::Write) {
+        write!(
+            s,
+            "{}",
+            match self {
+                Self::Table => "tags",
+                Self::Tag => "tag",
+                Self::Value => "value",
+                Self::EventId => "event_id",
+            }
+        )
+        .unwrap()
+    }
+}
+
+#[derive(FromRow, Debug)]
+struct EventsCountRow(i32);
+
+#[derive(FromRow, Debug)]
+struct EventRow {
+    id: String,
+    pubkey: String,
+    created_at: i64,
+    kind: i64,
+    tags: String,
+    sig: String,
+    content: String,
+}
+
+impl EventRow {
+    pub fn to_string(&self, subscription_id: nostr::SubscriptionId) -> String {
+        let tags: Vec<Vec<String>> = serde_json::from_str(&self.tags).unwrap();
+
+        let message = serde_json::json!([
+            "EVENT",
+            subscription_id,
+            {
+                "id": self.id,
+                "content": self.content,
+                "created_at": self.created_at,
+                "kind": self.kind,
+                "pubkey": self.pubkey,
+                "sig": self.sig,
+                "tags": tags
+            }
+        ]);
+
+        message.to_string()
+    }
+}
+
+pub struct SqliteDb {
+    pool: Pool<Sqlite>,
+}
+
+impl SqliteDb {
+    pub async fn new() -> Self {
+        let pool = SqliteDb::build_pool("noose_pool", 42).await;
+
+        Self { pool }
+    }
+
+    pub fn info(&self) {
+        dbg!(self.pool.options());
+    }
+
+    async fn migrate(pool: &Pool<Sqlite>) {
+        sqlx::migrate!("src/noose/migrations")
+            .run(pool)
+            .await
+            .unwrap()
+    }
+
+    async fn build_pool(name: &str, max_size: u32) -> Pool<Sqlite> {
+        let pool_options = SqlitePoolOptions::new()
+            .test_before_acquire(true)
+            // .idle_timeout(Some(Duration::from_secs(10)))
+            // .max_lifetime(Some(Duration::from_secs(30)))
+            .max_lifetime(None)
+            .idle_timeout(None)
+            .max_connections(max_size);
+
+        let db_url = "sqlite://sqlite.db";
+        if !Sqlite::database_exists(db_url).await.unwrap_or(false) {
+            log::info!("Creating database {}", db_url);
+            match Sqlite::create_database(db_url).await {
+                Ok(_) => log::info!("Db {} created", db_url),
+                Err(_) => panic!("Failed to create database {}", db_url),
+            }
+        }
+        if let Ok(pool) = pool_options.connect(db_url).await {
+            log::info!("Connected to sqlite pool {}", name);
+
+            pool
+        } else {
+            panic!("Connection to sqlite pool {} failed", name);
+        }
+    }
+
+    async fn add_event(&self, event: Box<Event>) -> Result<String, Error> {
+        let id = event.id.to_string();
+        let kind = event.kind.to_string();
+        let pubkey = event.pubkey.to_string();
+        let content = event.content.to_string();
+        let created_at = event.created_at.as_i64();
+        let tags = serde_json::to_string(&event.tags).unwrap();
+        let sig = event.sig.to_string();
+
+        let message = format!("[\"OK\", \"{}\", true, \"\"]", id.clone());
+
+        if event.is_ephemeral() {
+            return Ok(message);
+        }
+
+        let tx = self.pool.begin().await.unwrap();
+        {
+            if event.is_replaceable() {
+                dbg!("new event is replaceable - searching for previously stored event");
+                let (sql, values) = Query::select()
+                    .from(EventsTable::Table)
+                    .columns([EventsTable::EventId])
+                    .and_where(
+                        sea_query::Expr::col(EventsTable::Pubkey).eq(event.pubkey.to_string()),
+                    )
+                    .and_where(sea_query::Expr::col(EventsTable::Kind).eq(event.kind.as_u32()))
+                    .and_where(
+                        sea_query::Expr::col(EventsTable::CreatedAt).gte(event.created_at.as_i64()),
+                    )
+                    .limit(1)
+                    .build_sqlx(sea_query::SqliteQueryBuilder);
+
+                let repl_count = sqlx::query_with(&sql, values).fetch_one(&self.pool).await;
+
+                if repl_count.ok().is_some() {
+                    return Ok(message);
+                }
+            }
+        }
+
+        {
+            if event.is_parameterized_replaceable() {
+                dbg!(
+                    "new event is parametrized replaceable - searching for previously stored event"
+                );
+                let d_tags: Vec<String> = event
+                    .tags
+                    .iter()
+                    .filter(|tag| tag.kind() == nostr::TagKind::D)
+                    .map(|tag| tag.clone().to_vec()[1].clone())
+                    .collect();
+                let (sql, values) = Query::select()
+                    .from(EventsTable::Table)
+                    .column((EventsTable::Table, EventsTable::EventId))
+                    .left_join(
+                        TagsTable::Table,
+                        sea_query::Expr::col((TagsTable::Table, TagsTable::EventId))
+                            .equals((EventsTable::Table, EventsTable::EventId)),
+                    )
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::Pubkey))
+                            .eq(event.pubkey.to_string()),
+                    )
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::Kind))
+                            .eq(event.kind.as_u32()),
+                    )
+                    .and_where(sea_query::Expr::col((TagsTable::Table, TagsTable::Tag)).eq("d"))
+                    .and_where(
+                        sea_query::Expr::col((TagsTable::Table, TagsTable::Value))
+                            .eq(d_tags[0].to_string()),
+                    )
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::CreatedAt))
+                            .gte(event.created_at.as_i64()),
+                    )
+                    .limit(1)
+                    .build_sqlx(sea_query::SqliteQueryBuilder);
+
+                let repl_count = sqlx::query_with(&sql, values).fetch_one(&self.pool).await;
+
+                if repl_count.ok().is_some() {
+                    return Ok(message);
+                }
+            }
+        }
+
+        // Insert replaceble event
+        {
+            if event.is_replaceable() {
+                dbg!("deleting older replaceable event from events table");
+                let (sql, values) = Query::delete()
+                    .from_table(EventsTable::Table)
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::Kind))
+                            .eq(event.kind.as_u32()),
+                    )
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::Pubkey))
+                            .eq(event.pubkey.to_string()),
+                    )
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::EventId))
+                            .not_in_subquery(
+                                Query::select()
+                                    .from(EventsTable::Table)
+                                    .column(EventsTable::EventId)
+                                    .and_where(
+                                        sea_query::Expr::col(EventsTable::Kind)
+                                            .eq(event.kind.as_u32()),
+                                    )
+                                    .and_where(
+                                        sea_query::Expr::col(EventsTable::Pubkey)
+                                            .eq(event.pubkey.to_string()),
+                                    )
+                                    .order_by(EventsTable::CreatedAt, sea_query::Order::Desc)
+                                    .limit(1)
+                                    .to_owned(),
+                            ),
+                    )
+                    .build_sqlx(sea_query::SqliteQueryBuilder);
+
+                let results = sqlx::query_with(&sql, values)
+                    .execute(&self.pool)
+                    .await
+                    .unwrap();
+
+                if results.rows_affected() > 0 {
+                    log::info!(
+                        "removed {} older replaceable kind {} events for author: {:?}",
+                        results.rows_affected(),
+                        event.kind.as_u32(),
+                        event.pubkey.to_string()
+                    );
+                }
+            }
+        }
+
+        // Insert parametrized replaceble event
+        {
+            if event.is_parameterized_replaceable() {
+                dbg!("deleting older parametrized replaceable event from events table");
+                let d_tag = event.identifier();
+                let (sql, values) = Query::delete()
+                    .from_table(EventsTable::Table)
+                    .and_where(
+                        sea_query::Expr::col((EventsTable::Table, EventsTable::EventId))
+                            .in_subquery(
+                                Query::select()
+                                    .from(EventsTable::Table)
+                                    .column((EventsTable::Table, EventsTable::EventId))
+                                    .left_join(
+                                        TagsTable::Table,
+                                        sea_query::Expr::col((
+                                            TagsTable::Table,
+                                            TagsTable::EventId,
+                                        ))
+                                        .equals((EventsTable::Table, EventsTable::EventId)),
+                                    )
+                                    .and_where(
+                                        sea_query::Expr::col((
+                                            EventsTable::Table,
+                                            EventsTable::Kind,
+                                        ))
+                                        .eq(event.kind.as_u32()),
+                                    )
+                                    .and_where(
+                                        sea_query::Expr::col((
+                                            EventsTable::Table,
+                                            EventsTable::Pubkey,
+                                        ))
+                                        .eq(event.pubkey.to_string()),
+                                    )
+                                    .and_where(
+                                        sea_query::Expr::col((TagsTable::Table, TagsTable::Tag))
+                                            .eq("d"),
+                                    )
+                                    .and_where(
+                                        sea_query::Expr::col((TagsTable::Table, TagsTable::Value))
+                                            .eq(d_tag),
+                                    )
+                                    .to_owned(),
+                            ),
+                    )
+                    .build_sqlx(sea_query::SqliteQueryBuilder);
+
+                let results = sqlx::query_with(&sql, values)
+                    .execute(&self.pool)
+                    .await
+                    .unwrap();
+
+                if results.rows_affected() > 0 {
+                    log::info!("removed {} older parameterized replaceable kind {} events for author: {:?}", results.rows_affected(), event.kind, event.pubkey);
+                }
+            }
+        }
+
+        // Process deletion events
+        dbg!(event.as_json());
+        if event.kind.as_u32() == 5 {
+            dbg!("deleting event");
+            let ids: Vec<String> = event.event_ids().map(|eid| eid.to_string()).collect();
+            let (sql, values) = Query::delete()
+                .from_table(EventsTable::Table)
+                .and_where(sea_query::Expr::col(EventsTable::Kind).ne(5))
+                .and_where(sea_query::Expr::col(EventsTable::Pubkey).eq(event.pubkey.to_string()))
+                .and_where(sea_query::Expr::col(EventsTable::EventId).is_in(&ids))
+                .build_sqlx(sea_query::SqliteQueryBuilder);
+
+            let results = sqlx::query_with(&sql, values)
+                .execute(&self.pool)
+                .await
+                .unwrap();
+
+            if results.rows_affected() > 0 {
+                log::info!(
+                    "removed {} events for author {:?}",
+                    results.rows_affected(),
+                    event.pubkey
+                );
+            }
+
+            // Delete from EventsFTS
+            let (sql, values) = Query::delete()
+                .from_table(EventsFTSTable::Table)
+                .and_where(sea_query::Expr::col(EventsFTSTable::EventId).is_in(&ids))
+                .build_sqlx(sea_query::SqliteQueryBuilder);
+            let _ = sqlx::query_with(&sql, values)
+                .execute(&self.pool)
+                .await
+                .unwrap();
+        } else {
+            dbg!("inserting new event in events");
+            // Insert into Events table
+            let (sql, values) = Query::insert()
+                .into_table(EventsTable::Table)
+                .columns([
+                    EventsTable::EventId,
+                    EventsTable::Content,
+                    EventsTable::Kind,
+                    EventsTable::Pubkey,
+                    EventsTable::CreatedAt,
+                    EventsTable::Tags,
+                    EventsTable::Sig,
+                ])
+                .values_panic([
+                    id.clone().into(),
+                    content.clone().into(),
+                    kind.into(),
+                    pubkey.into(),
+                    created_at.into(),
+                    tags.into(),
+                    sig.into(),
+                ])
+                .build_sqlx(sea_query::SqliteQueryBuilder);
+
+            let results = sqlx::query_with(&sql, values)
+                .execute(&self.pool)
+                .await
+                .unwrap();
+
+            // Insert into EventsFTS table
+            dbg!("inserting new event into eventsFTS");
+            let (sql, values) = Query::insert()
+                .into_table(EventsFTSTable::Table)
+                .columns([EventsFTSTable::EventId, EventsFTSTable::Content])
+                .values_panic([id.clone().into(), content.into()])
+                .build_sqlx(sea_query::SqliteQueryBuilder);
+
+            let results = sqlx::query_with(&sql, values)
+                .execute(&self.pool)
+                .await
+                .unwrap();
+
+            // Insert into Tags table
+            dbg!("inserting new event into tags");
+            for tag in event.tags.clone() {
+                let tag = tag.to_vec();
+                if tag.len() >= 2 {
+                    let tag_name = &tag[0];
+                    let tag_value = &tag[1];
+                    if tag_name.len() == 1 {
+                        let (sql, values) = Query::insert()
+                            .into_table(TagsTable::Table)
+                            .columns([TagsTable::Tag, TagsTable::Value, TagsTable::EventId])
+                            .values_panic([tag_name.into(), tag_value.into(), id.clone().into()])
+                            .build_sqlx(sea_query::SqliteQueryBuilder);
+
+                        let results = sqlx::query_with(&sql, values)
+                            .execute(&self.pool)
+                            .await
+                            .unwrap();
+                    }
+                }
+            }
+        }
+
+        tx.commit().await.unwrap();
+
+        Ok(message)
+    }
+
+    async fn index_search(&self, event: Box<Event>) -> Result<(), Error> {
+        let id = event.id.to_string();
+        let content = event.content.to_string();
+        let (sql, values) = Query::insert()
+            .into_table(EventsFTSTable::Table)
+            .columns([EventsFTSTable::EventId, EventsFTSTable::Content])
+            .values_panic([id.into(), content.into()])
+            .build_sqlx(sea_query::SqliteQueryBuilder);
+
+        let results = sqlx::query_with(&sql, values).execute(&self.pool).await;
+        if results.is_ok() {
+            Ok(())
+        } else {
+            Err(Error::internal_with_message(
+                "Unable to write event to events_fts index",
+            ))
+        }
+    }
+
+    async fn index_tags(&self, event: Box<Event>) -> Result<(), Error> {
+        // let t: Vec<String> = Vec::new();
+        // for tag in event.tags {
+        //     tag.kind()
+        // }
+
+        Ok(())
+    }
+
+    fn get_filter_query(&self, filter: &nostr::Filter) -> sea_query::SelectStatement {
+        let mut query = Query::select()
+            .column((EventsTable::Table, EventsTable::EventId))
+            .column((EventsTable::Table, EventsTable::Content))
+            .columns([
+                EventsTable::Kind,
+                EventsTable::Pubkey,
+                EventsTable::CreatedAt,
+                EventsTable::Tags,
+                EventsTable::Sig,
+            ])
+            .from(EventsTable::Table)
+            .order_by(EventsTable::CreatedAt, sea_query::Order::Desc)
+            .to_owned();
+
+        if !filter.ids.is_empty() {
+            let ids = filter.ids.iter().map(|id| id.to_string());
+            query = query
+                .and_where(
+                    sea_query::Expr::col((EventsTable::Table, EventsTable::EventId)).is_in(ids),
+                )
+                .to_owned();
+        }
+
+        if !filter.kinds.is_empty() {
+            let kinds: Vec<u32> = filter.kinds.iter().map(|kind| kind.as_u32()).collect();
+            query = query
+                .and_where(
+                    sea_query::Expr::col((EventsTable::Table, EventsTable::Kind)).is_in(kinds),
+                )
+                .to_owned();
+        }
+
+        if !filter.authors.is_empty() {
+            let authors = filter.authors.iter().map(|author| author.to_string());
+            query = query
+                .and_where(
+                    sea_query::Expr::col((EventsTable::Table, EventsTable::Pubkey)).is_in(authors),
+                )
+                .to_owned();
+        }
+
+        if let Some(since) = filter.since {
+            query = query
+                .and_where(
+                    sea_query::Expr::col((EventsTable::Table, EventsTable::CreatedAt))
+                        .gte(since.as_u64()),
+                )
+                .to_owned();
+        }
+
+        if let Some(until) = filter.until {
+            query = query
+                .and_where(
+                    sea_query::Expr::col((EventsTable::Table, EventsTable::CreatedAt))
+                        .lte(until.as_u64()),
+                )
+                .to_owned();
+        }
+
+        if let Some(limit) = filter.limit {
+            query = query.limit(limit as u64).to_owned();
+        }
+
+        filter.generic_tags.iter().for_each(|(tag, values)| {
+            let values = values.iter().map(|val| val.to_string());
+            query = query
+                .left_join(
+                    TagsTable::Table,
+                    sea_query::Expr::col((TagsTable::Table, TagsTable::EventId))
+                        .equals((EventsTable::Table, EventsTable::EventId)),
+                )
+                .and_where(
+                    sea_query::Expr::col((TagsTable::Table, TagsTable::Tag)).eq(tag.to_string()),
+                )
+                .and_where(sea_query::Expr::col((TagsTable::Table, TagsTable::Value)).is_in(values))
+                .to_owned();
+        });
+
+        if let Some(search) = &filter.search {
+            query = query
+                .inner_join(
+                    EventsFTSTable::Table,
+                    sea_query::Expr::col((EventsTable::Table, EventsTable::EventId))
+                        .equals((EventsFTSTable::Table, EventsFTSTable::EventId)),
+                )
+                .and_where(
+                    sea_query::Expr::col((EventsFTSTable::Table, EventsFTSTable::Content))
+                        .matches(search),
+                )
+                .to_owned();
+        }
+
+        query
+    }
+
+    fn get_filters_query(&self, subscription: Subscription) -> Option<sea_query::SelectStatement> {
+        subscription
+            .filters
+            .iter()
+            .map(|filter| {
+                Query::select()
+                    .column((EventsTable::Table, EventsTable::EventId))
+                    .column((EventsTable::Table, EventsTable::Content))
+                    .columns([
+                        EventsTable::Kind,
+                        EventsTable::Pubkey,
+                        EventsTable::CreatedAt,
+                        EventsTable::Tags,
+                        EventsTable::Sig,
+                    ])
+                    .from_subquery(
+                        self.get_filter_query(filter),
+                        sea_query::Alias::new("events"),
+                    )
+                    .to_owned()
+            })
+            .reduce(|mut result, query| result.union(sea_query::UnionType::All, query).to_owned())
+    }
+
+    async fn delete_filters(&self, subscription: Subscription) -> Vec<EventRow> {
+        todo!()
+    }
+
+    async fn count_events_by_filters(&self, subscription: Subscription) -> i32 {
+        if subscription.filters.is_empty() {
+            return 0;
+        }
+
+        let (sql, values) = self
+            .get_filters_query(subscription)
+            .unwrap()
+            .clear_selects()
+            .expr_as(
+                sea_query::Func::count(sea_query::Expr::col((
+                    EventsTable::Table,
+                    EventsTable::EventId,
+                ))),
+                sea_query::Alias::new("count"),
+            )
+            .build_sqlx(sea_query::SqliteQueryBuilder);
+
+        println!("count_filters SEA_QUERY built SQL: {}", sql.clone());
+
+        let counts = sqlx::query_as_with::<_, EventsCountRow, _>(&sql, values)
+            .fetch_one(&self.pool)
+            .await
+            .unwrap();
+
+        dbg!(counts);
+
+        1
+    }
+}
+
+#[async_trait]
+impl Noose for SqliteDb {
+    async fn start(&mut self, pubsub: Arc<PubSub>) -> Result<(), Error> {
+        let mut subscriber = pubsub.subscribe(channels::MSG_NOOSE).await;
+
+        while let Ok(message) = subscriber.recv().await {
+            log::info!("[Noose] received message: {:?}", message);
+            let command = match message.content {
+                Command::DbReqWriteEvent(event) => match self.write_event(event).await {
+                    Ok(status) => Command::DbResOkWithStatus(status),
+                    Err(e) => Command::ServiceError(e),
+                },
+                Command::DbReqFindEvent(client_id, subscriptioin) => {
+                    match self.find_event(subscriptioin).await {
+                        Ok(events) => Command::DbResRelayMessage(client_id, events),
+                        Err(e) => Command::ServiceError(e),
+                    }
+                }
+                _ => Command::Noop,
+            };
+            if command != Command::Noop {
+                let channel = message.source;
+                let message = Message {
+                    source: channels::MSG_NOOSE,
+                    content: command,
+                };
+
+                log::debug!("[Noose] publishing new message: {:?}", message);
+
+                pubsub.publish(channel, message).await;
+            }
+        }
+
+        Ok(())
+    }
+
+    async fn migration_up(&self) {
+        SqliteDb::migrate(&self.pool).await;
+    }
+
+    async fn write_event(&self, event: Box<Event>) -> Result<String, Error> {
+        log::debug!("[Noose] write_event triggered");
+
+        let status = self.add_event(event).await.unwrap();
+
+        return Ok(status);
+    }
+
+    async fn find_event(&self, subscription: Subscription) -> Result<Vec<String>, Error> {
+        log::debug!("making query from filters...");
+
+        let eose_message =
+            vec![nostr::RelayMessage::EndOfStoredEvents(subscription.id.clone()).as_json()];
+
+        if let Some(sql_statement) = self.get_filters_query(subscription.clone()) {
+            let (sql, values) = sql_statement.build_sqlx(sea_query::SqliteQueryBuilder);
+            log::info!("SEA_QUERY built SQL: {}", sql.clone());
+
+            match sqlx::query_as_with::<_, EventRow, _>(&sql, values)
+                .fetch_all(&self.pool)
+                .await
+            {
+                Ok(rows) => {
+                    if rows.is_empty() {
+                        return Ok(eose_message);
+                    } else {
+                        let relay_messages: Vec<String> = rows
+                            .iter()
+                            .map(|row| row.to_string(subscription.id.clone()))
+                            .collect();
+                        return Ok(relay_messages);
+                    }
+                }
+                Err(e) => {
+                    log::error!("{}", e);
+                    return Err(Error::internal(e.into()));
+                }
+            }
+        }
+
+        return Ok(eose_message);
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::Noose;
+    use super::SqliteDb;
+    use crate::utils::structs::Subscription;
+
+    use nostr::util::JsonUtil;
+
+    #[tokio::test]
+    async fn find_event() {
+        let db = SqliteDb::new().await;
+
+        let t = std::time::Instant::now();
+        let client_id = "test_id".to_string();
+
+        let cm = nostr::ClientMessage::from_json(
+            r#"["REQ","7b9bc4b6-701c-40b6-898f-4e7c6b5b1510",{"authors":["04c915daefee38317fa734444acee390a8269fe5810b2241e5e6dd343dfbecc9"],"kinds":[0]}]"#,
+        ).unwrap();
+        let (sub_id, filters) = match cm {
+            nostr::ClientMessage::Req {
+                subscription_id,
+                filters,
+            } => (subscription_id, filters),
+            _ => panic!("sneed :("),
+        };
+        let sub = Subscription::new(sub_id, filters);
+        db.find_event(sub).await.unwrap();
+        println!(
+            "Time passed: {}",
+            (std::time::Instant::now() - t).as_millis()
+        );
+    }
+
+    #[tokio::test]
+    async fn delete_events() {
+        let db = SqliteDb::new().await;
+
+        let t = std::time::Instant::now();
+        let client_id = "test_id".to_string();
+
+        let my_keys = nostr::Keys::generate();
+
+        let eid = nostr::EventId::all_zeros();
+        let tag_event = nostr::Tag::Event {
+            event_id: eid,
+            relay_url: None,
+            marker: None,
+        };
+        let tag_url = nostr::Tag::AbsoluteURL(nostr::types::UncheckedUrl::new(
+            "http://foo.net".to_string(),
+        ));
+        let tag_hashtag = nostr::Tag::Hashtag("farm".to_string());
+
+        let event = nostr::EventBuilder::new_text_note(
+            "sneed feed and seed",
+            vec![tag_event, tag_url, tag_hashtag],
+        )
+        .to_event(&my_keys)
+        .unwrap();
+
+        dbg!(&event.as_json());
+        let resp = db.add_event(Box::new(event.clone())).await.unwrap();
+        dbg!(resp);
+
+        let delete_event = nostr::EventBuilder::delete(vec![event.id])
+            .to_event(&my_keys)
+            .unwrap();
+
+        dbg!(&delete_event);
+        let resp = db.add_event(Box::new(delete_event.clone())).await.unwrap();
+        dbg!(resp);
+
+        // let sub_id = nostr::SubscriptionId::new("test".to_string());
+        // let mut subscription = Subscription::new(sub_id, vec![]);
+
+        // if delete_event.kind == nostr::Kind::EventDeletion {
+        //     delete_event
+        //         .tags
+        //         .iter()
+        //         .filter(|tag| {
+        //             matches!(
+        //                 tag,
+        //                 nostr::Tag::Event {
+        //                     event_id,
+        //                     relay_url,
+        //                     marker,
+        //                 }
+        //             )
+        //         })
+        //         .for_each(|tag| {
+        //             if let nostr::Tag::Event {
+        //                 event_id,
+        //                 relay_url,
+        //                 marker,
+        //             } = tag
+        //             {
+        //                 let filter = nostr::Filter::new();
+        //                 let filter = &filter.event(*event_id);
+
+        //                 subscription.filters.push(filter.clone());
+        //             }
+        //         });
+
+        //     dbg!(&subscription);
+        // }
+
+        // let res = db.delete_filters(subscription).await;
+
+        // dbg!(res);
+
+        // let sub = Subscription::new(sub_id, filters);
+        // let num = db.delete_filters(sub).await.len();
+        // println!(
+        //     "Time passed: {}",
+        //     (std::time::Instant::now() - t).as_millis()
+        // );
+
+        // assert_eq!(num, 1);
+    }
+
+    #[tokio::test]
+    async fn count_events() {
+        let db = SqliteDb::new().await;
+
+        let t = std::time::Instant::now();
+        let client_id = "test_id".to_string();
+
+        let cm = nostr::ClientMessage::from_json(
+            r#"["COUNT","7b9bc4b6-701c-40b6-898f-4e7c6b5b1510",{"authors":["6be3c1446231fe6d117d72e29b60094bbb3eec029100c34f627dc4ebe8369a64"],"kinds":[1]}]"#,
+        ).unwrap();
+        let (sub_id, filters) = match cm {
+            nostr::ClientMessage::Count {
+                subscription_id,
+                filters,
+            } => (subscription_id, filters),
+            _ => panic!("sneed :("),
+        };
+
+        let sub = Subscription::new(sub_id, filters);
+        let num = db.count_events_by_filters(sub).await;
+        println!(
+            "Time passed: {}",
+            (std::time::Instant::now() - t).as_millis()
+        );
+
+        assert_eq!(num, 1);
+    }
+}

src/noose/user.rs

@@ -0,0 +1,43 @@
+use chrono::Utc;
+use regex::Regex;
+use serde::{Deserialize, Serialize};
+use validator::{Validate, ValidationError};
+
+lazy_static! {
+    static ref VALID_CHARACTERS: Regex = Regex::new(r"^[a-zA-Z0-9\_]+$").unwrap();
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Validate)]
+pub struct UserRow {
+    pub pubkey: String,
+    pub username: String,
+    inserted_at: i64,
+    admin: bool,
+}
+
+impl UserRow {
+    pub fn new(pubkey: String, username: String, admin: bool) -> Self {
+        Self {
+            pubkey,
+            username,
+            inserted_at: Utc::now().timestamp(),
+            admin,
+        }
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Validate)]
+pub struct User {
+    #[validate(custom = "validate_pubkey")]
+    pub pubkey: Option<String>,
+    #[validate(length(min = 1), regex = "VALID_CHARACTERS")]
+    pub name: Option<String>,
+}
+
+pub fn validate_pubkey(value: &str) -> Result<(), ValidationError> {
+    use nostr::prelude::FromPkStr;
+    match nostr::Keys::from_pk_str(value) {
+        Ok(_) => Ok(()),
+        Err(_) => Err(ValidationError::new("Unable to parse pubkey")),
+    }
+}

src/relay/handler.rs

@@ -0,0 +1,12 @@
+use crate::relay::ws;
+use crate::utils::structs::Context;
+use std::net::SocketAddr;
+use warp::{Rejection, Reply};
+
+pub async fn ws_handler(
+    ws: warp::ws::Ws,
+    context: Context,
+    client_addr: Option<SocketAddr>,
+) -> Result<impl Reply, Rejection> {
+    Ok(ws.on_upgrade(move |socket| ws::client_connection(socket, context, client_addr)))
+}

src/relay/mod.rs

@@ -0,0 +1,24 @@
+mod handler;
+mod routes;
+mod ws;
+
+use crate::utils::rejection_handler::handle_rejection;
+use crate::utils::structs::Context;
+use tokio::runtime;
+use warp::Filter;
+
+pub fn start(context: Context) {
+    let rt = runtime::Runtime::new().unwrap();
+    rt.block_on(async {
+        log::info!("Starting Relay on wss://127.0.0.1:8080");
+
+        let routes = routes::routes(context).recover(handle_rejection);
+
+        warp::serve(routes)
+            // .tls()
+            // .cert(CERT)
+            // .key(KEY)
+            .run(([127, 0, 0, 1], 8080))
+            .await;
+    });
+}

src/relay/routes.rs

@@ -0,0 +1,31 @@
+use super::handler;
+use crate::utils::filter::with_context;
+use crate::utils::structs::Context;
+use warp::{Filter, Rejection, Reply};
+
+pub fn routes(context: Context) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    let cors = warp::cors().allow_any_origin();
+
+    static_files().or(index(context)).with(cors)
+}
+
+fn index(context: Context) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    let client_addr = warp::addr::remote();
+
+    warp::path::end()
+        .and(warp::ws())
+        .and(with_context(context))
+        .and(client_addr)
+        .and_then(handler::ws_handler)
+}
+
+fn static_files() -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    let mut foo = std::env::current_exe().unwrap();
+    foo.pop();
+
+    let mut www = foo.clone();
+    www.pop();
+    www.push(std::path::Path::new("www/static"));
+
+    warp::get().and(warp::fs::dir(www))
+}

src/relay/ws.rs

@@ -0,0 +1,264 @@
+use crate::{
+    bussy::channels,
+    utils::structs::{Client, Context, Subscription},
+};
+
+use futures_util::StreamExt;
+use nostr::{ClientMessage, Event, Filter, JsonUtil, SubscriptionId};
+use serde_json::from_str;
+use std::net::SocketAddr;
+use tokio::sync::mpsc;
+use tokio_stream::wrappers::UnboundedReceiverStream;
+use warp::ws::{Message, WebSocket};
+
+use futures_util::SinkExt;
+
+pub async fn client_connection(ws: WebSocket, context: Context, client_addr: Option<SocketAddr>) {
+    let (mut ws_sender, mut ws_receiver) = ws.split();
+    let (client_sender, client_receiver) = mpsc::unbounded_channel();
+
+    let mut client_receiver = UnboundedReceiverStream::new(client_receiver);
+
+    // Create and Add to the Context new Client and set its sender
+    let ip = client_addr.unwrap().ip().to_string();
+    let mut client = Client::new(ip);
+
+    client.client_connection = Some(client_sender);
+
+    let mut subscriber = context.pubsub.subscribe(channels::MSG_RELAY).await;
+
+    loop {
+        tokio::select! {
+            Ok(message) = subscriber.recv() => {
+                match message.content {
+                    crate::bussy::Command::PipelineResRelayMessageOk(client_id, relay_message) => {
+                        if client.client_id == client_id {
+                            if let Some(sender) = &client.client_connection {
+                                if !sender.is_closed() {
+                                    log::info!("[Relay] sending back the status of the processed event: {}", relay_message.as_json());
+                                    sender.send(Ok(Message::text(relay_message.as_json()))).unwrap();
+                                }
+
+                            }
+                        }
+                    },
+                    crate::bussy::Command::PipelineResStreamOutEvent(event) => {
+                        // if client.client_id == client_id {
+                            if let Some(sender) = &client.client_connection {
+                                if let Some(relay_message) = get_relay_message(&client, event) {
+                                    log::info!("[Relay] sending processed event to subscribed client: {}", relay_message.as_json());
+                                    if !sender.is_closed() {sender.send(Ok(Message::text(relay_message.as_json()))).unwrap()};
+                                }
+                            }
+                        // }
+                    }
+                    crate::bussy::Command::DbResRelayMessage(client_id, events) => {
+                        if client.client_id == client_id {
+                        if let Some(sender) = &client.client_connection {
+                            if !sender.is_closed() {
+                                for event in events {
+                                    sender.send(Ok(Message::text(event))).unwrap();
+                                }
+                            }
+                        }
+                        }
+                    }
+                    crate::bussy::Command::DbResOkWithStatus(status) => {
+                        if let Some(sender) = &client.client_connection {
+                            sender.send(Ok(Message::text(status))).unwrap();
+                        }
+                    },
+                    _ => ()
+                }
+
+            },
+            Some(message) = client_receiver.next() => {
+            match message {
+                Ok(message) => {
+                    // ws_sender
+                    //     .send(message)
+                    //     .unwrap_or_else(|e| {
+                    //         log::error!("websocket send error: {}", e);
+                    //     })
+                    //     .await;
+
+                    match ws_sender.send(message).await {
+                        Ok(_) => (),
+                        Err(e) => {
+                            log::error!("websocket send error: {}", e);
+                            break;
+                        }
+                    }
+                }
+                Err(e) => {
+                    log::error!("websocket send error: {}", e);
+                    break;
+                }
+            }
+        },
+            Some(result) = ws_receiver.next() => {
+                let msg = match result {
+                Ok(msg) => msg,
+                Err(e) => {
+                    log::error!(
+                        "error receiving ws message for id: {}: {}",
+                        client.client_id.clone(),
+                        e
+                    );
+                    break;
+                }
+            };
+            socket_on_message(&context, &mut client, msg).await;
+            }
+        }
+    }
+
+    // Handle proper disconnects
+    socket_on_close(&client).await;
+}
+
+/// Checking if client with id needs the event
+fn get_relay_message(client: &Client, event: Box<Event>) -> Option<nostr::RelayMessage> {
+    let mut id = &"".to_string();
+    log::info!(
+        "Checking if client with id {} needs the event",
+        client.client_id
+    );
+    if client.subscriptions.iter().any(|(sub_id, sub)| {
+        if sub.interested_in_event(&event) {
+            id = sub_id;
+            return true;
+        }
+        false
+    }) {
+        return Some(nostr::RelayMessage::Event {
+            subscription_id: nostr::SubscriptionId::new(id),
+            event,
+        });
+    }
+
+    None
+}
+
+async fn socket_on_close(client: &Client) {
+    // clients.write().await.remove(id);
+    log::info!("{} disconnected", client.client_id);
+}
+
+async fn socket_on_message(context: &Context, client: &mut Client, msg: Message) {
+    let message = match msg.to_str() {
+        Ok(raw_message) => raw_message,
+        Err(_) => return,
+    };
+
+    if message == "ping" || message == "ping\n" {
+        return;
+    }
+
+    let client_message: ClientMessage = match from_str(message) {
+        Ok(parsed_message) => parsed_message,
+        Err(e) => {
+            log::error!("error while parsing client message request: {}", e);
+
+            let response = nostr::RelayMessage::new_notice("Invalid message");
+            let message = Message::text(response.as_json());
+            send(client, message);
+
+            return;
+        }
+    };
+
+    log::info!(
+        "[client {} - {}] message: {}",
+        client.ip(),
+        client.client_id,
+        client_message.as_json()
+    );
+    handle_msg(context, client, client_message).await;
+}
+
+fn send(client: &Client, message: Message) {
+    if let Some(sender) = &client.client_connection {
+        if !sender.is_closed() {
+            sender.send(Ok(message)).unwrap();
+        }
+    }
+}
+
+async fn handle_msg(context: &Context, client: &mut Client, client_message: ClientMessage) {
+    match client_message {
+        ClientMessage::Event(event) => handle_event(context, client, event).await,
+        ClientMessage::Req {
+            subscription_id,
+            filters,
+        } => handle_req(context, client, subscription_id, filters).await,
+        ClientMessage::Count {
+            subscription_id,
+            filters,
+        } => handle_count(client, subscription_id, filters).await,
+        ClientMessage::Close(subscription_id) => handle_close(client, subscription_id).await,
+        ClientMessage::Auth(event) => handle_auth(client, event).await,
+        _ => (),
+    }
+}
+
+async fn handle_event(context: &Context, client: &Client, event: Box<Event>) {
+    log::debug!("handle_event is processing new event");
+
+    context
+        .pubsub
+        .publish(
+            channels::MSG_PIPELINE,
+            crate::bussy::Message {
+                source: channels::MSG_RELAY,
+                content: crate::bussy::Command::PipelineReqEvent(client.client_id, event),
+            },
+        )
+        .await;
+}
+
+async fn handle_req(
+    context: &Context,
+    client: &mut Client,
+    subscription_id: SubscriptionId,
+    filters: Vec<Filter>,
+) {
+    let subscription = Subscription::new(subscription_id.clone(), filters);
+    let needs_historical_events = subscription.needs_historical_events();
+
+    client.subscribe(subscription.clone()).unwrap();
+
+    if needs_historical_events {
+        context
+            .pubsub
+            .publish(
+                channels::MSG_NOOSE,
+                crate::bussy::Message {
+                    source: channels::MSG_RELAY,
+                    content: crate::bussy::Command::DbReqFindEvent(client.client_id, subscription),
+                },
+            )
+            .await
+    }
+}
+
+async fn handle_count(client: &Client, subscription_id: SubscriptionId, filters: Vec<Filter>) {
+    // context.pubsub.send(new nostr event) then handle possible errors
+    let subscription = Subscription::new(subscription_id, filters);
+
+    let message = Message::text("COUNT not implemented");
+    send(client, message);
+}
+
+async fn handle_close(client: &mut Client, subscription_id: SubscriptionId) {
+    // context.pubsub.send(new nostr event) then handle possible errors
+    client.unsubscribe(subscription_id);
+
+    // let message = Message::text("CLOSE not implemented");
+    // send(client, message);
+}
+
+async fn handle_auth(client: &Client, event: Box<Event>) {
+    let message = Message::text("AUTH not implemented");
+    send(client, message);
+}

src/usernames/accounts.rs

@@ -0,0 +1,62 @@
+use crate::noose::user::{User, UserRow};
+
+use crate::bussy::{channels, Command, Message};
+use crate::usernames::util::InvalidParameter;
+use crate::utils::error::Error;
+
+use warp::{Rejection, Reply};
+
+use super::Context;
+
+pub async fn create_account(user: User, context: Context) -> Result<impl Reply, Rejection> {
+    let mut subscriber = context.pubsub.subscribe(channels::MSG_NIP05).await;
+
+    let pubkey = match user.pubkey {
+        Some(pk) => {
+            use nostr::prelude::FromPkStr;
+            let keys = nostr::Keys::from_pk_str(&pk).unwrap();
+            keys.public_key().to_string()
+        }
+        None => {
+            return Err(warp::reject::custom(Error::bad_request(
+                "Pubkey is required",
+            )))
+        }
+    };
+
+    let name = match user.name {
+        Some(n) => n,
+        None => return Err(warp::reject::custom(Error::bad_request("Name is required"))),
+    };
+
+    let user_row = UserRow::new(pubkey, name, false);
+
+    let command = Command::DbReqInsertUser(user_row);
+    context
+        .pubsub
+        .publish(
+            channels::MSG_NOOSE,
+            Message {
+                source: channels::MSG_NIP05,
+                content: command,
+            },
+        )
+        .await;
+
+    if let Ok(result) = subscriber.recv().await {
+        match result.content {
+            Command::DbResOk => Ok(warp::reply::with_status(
+                "ACCOUNT CREATED",
+                warp::http::StatusCode::CREATED,
+            )),
+            Command::ServiceError(e) => Err(warp::reject::custom(e)),
+            // _ => Err(warp::reject::custom(InvalidParameter)),
+            _ => Ok(warp::reply::with_status(
+                "something else",
+                warp::http::StatusCode::INTERNAL_SERVER_ERROR,
+            )),
+        }
+    } else {
+        Err(warp::reject::custom(InvalidParameter))
+    }
+}

src/usernames/dto/mod.rs

@@ -0,0 +1,65 @@
+use std::collections::HashMap;
+
+use crate::usernames::validators::validate_pubkey;
+use crate::utils::error::Error;
+use nostr::prelude::*;
+use nostr::{key::XOnlyPublicKey, Keys};
+use regex::Regex;
+use serde::{Deserialize, Serialize};
+use validator::Validate;
+
+lazy_static! {
+    static ref VALID_CHARACTERS: Regex = Regex::new(r"^[a-zA-Z0-9\_]+$").unwrap();
+}
+
+#[derive(Serialize, Deserialize, Debug, Validate)]
+pub struct UserBody {
+    #[validate(length(min = 1), regex = "VALID_CHARACTERS")]
+    pub name: String,
+    #[validate(custom(function = "validate_pubkey"))]
+    pub pubkey: String,
+}
+
+impl UserBody {
+    pub fn get_pubkey(&self) -> XOnlyPublicKey {
+        let keys = Keys::from_pk_str(&self.pubkey).unwrap();
+
+        keys.public_key()
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Nip05 {
+    names: HashMap<String, String>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Validate, Clone)]
+pub struct UserQuery {
+    #[validate(length(min = 1))]
+    pub user: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, Validate)]
+pub struct Account {
+    #[validate(custom(function = "validate_pubkey"))]
+    pub pubkey: String,
+    #[validate(length(min = 1), regex = "VALID_CHARACTERS")]
+    pub name: String,
+    #[validate(length(min = 1))]
+    pub password: String,
+}
+
+impl Account {
+    pub fn get_pubkey(&self) -> Result<XOnlyPublicKey, Error> {
+        match nostr::Keys::from_pk_str(&self.pubkey) {
+            Ok(pk) => Ok(pk.public_key()),
+            Err(e) => Err(Error::invalid_param("pubkey", self.pubkey.clone())),
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, Validate)]
+pub struct AccountPubkey {
+    #[validate(custom(function = "validate_pubkey"))]
+    pub pubkey: String,
+}

src/usernames/filter.rs

@@ -0,0 +1,27 @@
+use crate::utils::error::Error;
+use validator::Validate;
+use warp::{Filter, Rejection};
+
+pub fn with_client_ip() {}
+
+pub fn with_user_body() {}
+
+pub fn validate_body_filter<T: serde::de::DeserializeOwned + Send + Validate + 'static>(
+) -> impl Filter<Extract = (T,), Error = Rejection> + Copy {
+    warp::body::json::<T>().and_then(|query: T| async move {
+        match query.validate() {
+            Ok(_) => Ok(query),
+            Err(e) => Err(warp::reject::custom(Error::validation_error(e))),
+        }
+    })
+}
+
+pub fn validate_query_filter<T: serde::de::DeserializeOwned + Send + Validate + 'static>(
+) -> impl Filter<Extract = (T,), Error = Rejection> + Copy {
+    warp::query::query::<T>().and_then(|query: T| async move {
+        match query.validate() {
+            Ok(_) => Ok(query),
+            Err(e) => Err(warp::reject::custom(Error::validation_error(e))),
+        }
+    })
+}

src/usernames/handler.rs

@@ -0,0 +1,89 @@
+use crate::bussy::{channels, Command, Message};
+use crate::noose::user::User;
+use crate::usernames::dto::{Account, UserQuery};
+use crate::utils::error::Error;
+use crate::utils::structs::Context;
+use serde_json::json;
+use warp::{Rejection, Reply};
+
+pub async fn get_account(
+    // account: Result<AccountPubkey, Error>,
+    account: Account,
+    context: Context,
+) -> Result<impl Reply, Rejection> {
+    let mut subscriber = context.pubsub.subscribe(channels::MSG_NIP05).await;
+
+    let command = Command::DbReqGetAccount(account.pubkey);
+
+    context
+        .pubsub
+        .publish(
+            channels::MSG_NOOSE,
+            Message {
+                source: channels::MSG_NIP05,
+                content: command,
+            },
+        )
+        .await;
+
+    if let Ok(result) = subscriber.recv().await {
+        match result.content {
+            Command::DbResAccount => Ok(warp::reply::with_status(
+                "ACCOUNT CREATED",
+                warp::http::StatusCode::CREATED,
+            )),
+            Command::ServiceError(e) => Err(warp::reject::custom(e)),
+            _ => Err(warp::reject::custom(Error::internal_with_message(
+                "Unhandled message type",
+            ))),
+        }
+    } else {
+        Err(warp::reject::custom(Error::internal_with_message(
+            "Unhandeled message type",
+        )))
+    }
+}
+
+pub async fn get_user(user_query: UserQuery, context: Context) -> Result<impl Reply, Rejection> {
+    let name = user_query.user;
+    let mut subscriber = context.pubsub.subscribe(channels::MSG_NIP05).await;
+
+    let user = User {
+        name: Some(name),
+        pubkey: None,
+    };
+    let command = Command::DbReqGetUser(user);
+    context
+        .pubsub
+        .publish(
+            channels::MSG_NOOSE,
+            Message {
+                source: channels::MSG_NIP05,
+                content: command,
+            },
+        )
+        .await;
+
+    if let Ok(message) = subscriber.recv().await {
+        let mut response = json!({"names": {}, "relays": {}});
+        match message.content {
+            Command::DbResUser(user) => {
+                response = json!({
+                    "names": {
+                        user.username: user.pubkey
+                    },
+                    "relays": {}
+                });
+                Ok(warp::reply::json(&response))
+            }
+            Command::ServiceError(e) => Ok(warp::reply::json(&response)),
+            _ => Err(warp::reject::custom(Error::internal_with_message(
+                "Unhandeled message type",
+            ))),
+        }
+    } else {
+        Err(warp::reject::custom(Error::internal_with_message(
+            "Unhandeled message type",
+        )))
+    }
+}

src/usernames/mod.rs

@@ -0,0 +1,22 @@
+mod accounts;
+pub mod dto;
+mod filter;
+mod handler;
+mod routes;
+mod util;
+mod validators;
+
+use super::utils::structs::Context;
+use crate::utils::rejection_handler::handle_rejection;
+use tokio::runtime;
+use warp::Filter;
+
+pub fn start(context: Context) {
+    let rt = runtime::Runtime::new().unwrap();
+    rt.block_on(async {
+        log::info!("Starting NIP-05 on http://127.0.0.1:8085");
+        let routes = routes::routes(context).recover(handle_rejection);
+
+        warp::serve(routes).run(([127, 0, 0, 1], 8085)).await;
+    })
+}

src/usernames/routes.rs

@@ -0,0 +1,57 @@
+use crate::noose::user::User;
+
+use super::accounts::create_account;
+use super::dto::{Account, UserQuery};
+use super::filter::{validate_body_filter, validate_query_filter};
+use super::handler::{get_account, get_user};
+use crate::utils::filter::with_context;
+use crate::utils::structs::Context;
+use warp::{Filter, Rejection, Reply};
+
+pub fn routes(context: Context) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    let index = warp::path::end().map(|| warp::reply::html("<h1>SNEED!</h1>"));
+
+    index
+        .or(nip05_get(context.clone()))
+        .or(account_create(context.clone()))
+}
+
+pub fn nip05_get(context: Context) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    warp::get()
+        .and(warp::path(".well-known"))
+        .and(warp::path("nostr.json"))
+        .and(validate_query_filter::<UserQuery>())
+        .and(with_context(context))
+        .and_then(get_user)
+}
+
+pub fn account_create(
+    context: Context,
+) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    warp::path("account")
+        .and(warp::post())
+        .and(validate_body_filter::<User>())
+        .and(with_context(context))
+        .and_then(create_account)
+}
+
+pub fn account_get(
+    context: Context,
+) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+    warp::path("account")
+        .and(warp::get())
+        .and(validate_body_filter::<Account>())
+        .and(with_context(context))
+        .and_then(get_account)
+}
+
+// pub fn account_update(
+//     context: Context,
+// ) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
+//     warp::path("account")
+//         .and(warp::put())
+//         .and(warp::body::json::<Account>())
+//         .then(validate_body)
+//         .and(with_context(context))
+//         .and_then(update_account)
+// }

src/usernames/util.rs

@@ -0,0 +1,3 @@
+#[derive(Debug)]
+pub struct InvalidParameter;
+impl warp::reject::Reject for InvalidParameter {}

src/usernames/validators.rs

@@ -0,0 +1,30 @@
+use super::dto::AccountPubkey;
+use crate::utils::error::Error;
+use nostr::prelude::FromPkStr;
+use validator::{Validate, ValidationError};
+
+pub async fn validate_account_pubkey_query(
+    account_pubkey: AccountPubkey,
+) -> Result<AccountPubkey, Error>
+where
+    AccountPubkey: Validate,
+{
+    match account_pubkey.validate() {
+        Ok(_) => Ok(account_pubkey),
+        Err(e) => {
+            log::error!("AccountPubkey validation errors: {}", e);
+            Err(Error::validation_error(e))
+        }
+    }
+}
+
+pub fn validate_pubkey(value: &str) -> Result<(), ValidationError> {
+    if value.is_empty() {
+        return Err(ValidationError::new("Value is empty"));
+    }
+
+    match nostr::Keys::from_pk_str(value) {
+        Ok(_) => Ok(()),
+        Err(_) => Err(ValidationError::new("Unable to parse pk_str")),
+    }
+}

src/utils/crypto.rs

@@ -0,0 +1,52 @@
+use argon2::{
+    password_hash::{rand_core::OsRng, PasswordHash, PasswordHasher, PasswordVerifier, SaltString},
+    Argon2,
+};
+
+pub fn password_hash(password: String) -> String {
+    let password = password.as_bytes();
+    let salt = SaltString::generate(&mut OsRng);
+
+    // Argon2 with default params (Argon2id v19)
+    let argon2 = Argon2::default();
+
+    // Hash password to PHC string ($argon2id$v=19$...)
+    let password_hash = argon2.hash_password(password, &salt).unwrap().to_string();
+
+    password_hash
+}
+
+pub fn password_verify(password: String, password_hash: String) -> bool {
+    // Verify password against PHC string.
+    //
+    // NOTE: hash params from `parsed_hash` are used instead of what is configured in the
+    // `Argon2` instance.
+    let password = password.as_bytes();
+    let parsed_hash = PasswordHash::new(&password_hash).unwrap();
+    Argon2::default()
+        .verify_password(password, &parsed_hash)
+        .is_ok()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{password_hash, password_verify};
+
+    #[test]
+    fn hash() {
+        let pass = "mysecretpassword".to_string();
+        let hash = password_hash(pass);
+
+        assert_ne!(hash, "".to_string());
+    }
+
+    #[test]
+    fn verify() {
+        let pass = "mysecretpassword".to_string();
+        let hash = password_hash(pass.clone());
+
+        let verification = password_verify(pass, hash);
+
+        assert!(verification);
+    }
+}

src/utils/error.rs

@@ -0,0 +1,132 @@
+use serde::{Deserialize, Serialize};
+use serde_json;
+use std::{
+    convert::From,
+    fmt::{self, Display},
+};
+use validator::ValidationErrors;
+use warp::{http::StatusCode, reject::Reject};
+
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
+pub struct Error {
+    pub code: u16,
+    pub message: String,
+    /// Sneedstr version.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub sneedstr_version: Option<u16>,
+}
+
+impl Error {
+    pub fn new(code: StatusCode, message: String) -> Self {
+        Self {
+            code: code.as_u16(),
+            message,
+            sneedstr_version: None,
+        }
+    }
+
+    pub fn from_anyhow_error(code: StatusCode, err: anyhow::Error) -> Self {
+        Self::new(code, err.to_string())
+    }
+
+    pub fn bad_request<S: Display>(msg: S) -> Self {
+        Self::new(StatusCode::BAD_REQUEST, msg.to_string())
+    }
+
+    pub fn internal_with_message<S: Display>(msg: S) -> Self {
+        Self::new(StatusCode::INTERNAL_SERVER_ERROR, msg.to_string())
+    }
+
+    pub fn validation_error(msg: ValidationErrors) -> Self {
+        let message =
+            serde_json::to_string(&msg.field_errors()).unwrap_or("Validation Error".to_string());
+        Self::new(StatusCode::BAD_REQUEST, message)
+    }
+
+    pub fn not_found<S: Display>(resource: &str, identifier: S, service_version: u16) -> Self {
+        Self::new(
+            StatusCode::NOT_FOUND,
+            format!("{} not found by {}", resource, identifier),
+        )
+        .sneedstr_version(service_version)
+    }
+
+    pub fn invalid_param<S: Display>(name: &str, value: S) -> Self {
+        Self::bad_request(format!("invalid parameter {}: {}", name, value))
+    }
+
+    pub fn invalid_request_body<S: Display>(msg: S) -> Self {
+        Self::bad_request(format!("invalid request body: {}", msg))
+    }
+
+    pub fn internal(err: anyhow::Error) -> Self {
+        Self::from_anyhow_error(StatusCode::INTERNAL_SERVER_ERROR, err)
+    }
+
+    pub fn status_code(&self) -> StatusCode {
+        StatusCode::from_u16(self.code).unwrap_or(StatusCode::INTERNAL_SERVER_ERROR)
+    }
+
+    pub fn sneedstr_version(mut self, service_version: u16) -> Self {
+        self.sneedstr_version = Some(service_version);
+        self
+    }
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}: {}", self.status_code(), &self.message)?;
+        if let Some(val) = &self.sneedstr_version {
+            write!(f, "\ndiem ledger version: {}", val)?;
+        }
+        Ok(())
+    }
+}
+
+impl Reject for Error {}
+
+impl From<anyhow::Error> for Error {
+    fn from(e: anyhow::Error) -> Self {
+        Self::internal(e)
+    }
+}
+
+impl From<serde_json::error::Error> for Error {
+    fn from(err: serde_json::error::Error) -> Self {
+        Self::internal(err.into())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::Error;
+    use warp::http::StatusCode;
+
+    #[test]
+    fn test_to_string() {
+        let err = Error::new(StatusCode::BAD_REQUEST, "invalid address".to_owned());
+        assert_eq!(err.to_string(), "400 Bad Request: invalid address")
+    }
+
+    #[test]
+    fn test_from_anyhow_error_as_internal_error() {
+        let err = Error::from(anyhow::format_err!("hello"));
+        assert_eq!(err.to_string(), "500 Internal Server Error: hello")
+    }
+
+    #[test]
+    fn test_to_string_with_sneedstr_version() {
+        let err =
+            Error::new(StatusCode::BAD_REQUEST, "invalid address".to_owned()).sneedstr_version(123);
+        assert_eq!(
+            err.to_string(),
+            "400 Bad Request: invalid address\ndiem ledger version: 123"
+        )
+    }
+
+    #[test]
+    fn test_internal_error() {
+        let err = Error::internal(anyhow::format_err!("hello"));
+        assert_eq!(err.to_string(), "500 Internal Server Error: hello")
+    }
+}

src/utils/filter.rs

@@ -0,0 +1,8 @@
+use super::structs::Context;
+use warp::Filter;
+
+pub fn with_context(
+    context: Context,
+) -> impl Filter<Extract = (Context,), Error = std::convert::Infallible> + Clone {
+    warp::any().map(move || context.clone())
+}

src/utils/mod.rs

@@ -0,0 +1,7 @@
+pub mod crypto;
+pub mod error;
+pub mod filter;
+// mod nostr_filter_helpers;
+pub mod rejection_handler;
+pub mod response;
+pub mod structs;

src/utils/nostr_filter_helpers.rs

@@ -0,0 +1,156 @@
+use nostr::{Event, Filter, Kind, Tag};
+
+fn ids_match(filter: &Filter, event: &Event) -> bool {
+    if filter.ids.is_empty() {
+        println!("[FILTER][IDS] skipped");
+        return true;
+    }
+
+    println!(
+        "[FILTER][IDS] matched: {:?}",
+        filter.ids.iter().any(|id| id == &event.id.to_string())
+    );
+
+    filter.ids.iter().any(|id| id == &event.id.to_string())
+}
+
+fn kind_match(filter: &Filter, kind: Kind) -> bool {
+    if filter.kinds.is_empty() {
+        println!("[FILTER][KINDS] skipped");
+        return true;
+    }
+
+    println!(
+        "[FILTER][KIND] matched: {:?}",
+        filter.kinds.iter().any(|k| k == &kind)
+    );
+
+    filter.kinds.iter().any(|k| k == &kind)
+}
+
+fn pubkeys_match(filter: &Filter, event: &Event) -> bool {
+    if filter.pubkeys.is_empty() {
+        println!("[FILTER][PUBKEYS] skipped");
+        return true;
+    }
+
+    println!(
+        "[FILTER][PUBKEYS] matched: {:?}",
+        filter.pubkeys.iter().any(|pk| pk == &event.pubkey)
+    );
+    filter.pubkeys.iter().any(|pk| pk == &event.pubkey)
+}
+
+fn authors_match(filter: &Filter, event: &Event) -> bool {
+    dbg!(filter);
+    if filter.authors.is_empty() {
+        println!("[FILTER][AUTHORS] skipped");
+        return true;
+    }
+
+    println!(
+        "[FILTER][AUTHORS] matched: {:?}",
+        filter
+            .authors
+            .iter()
+            .any(|author| author == &event.pubkey.to_string())
+    );
+    filter
+        .authors
+        .iter()
+        .any(|author| author == &event.pubkey.to_string())
+}
+
+fn delegated_authors_match(filter: &Filter, event: &Event) -> bool {
+    // Optional implementation
+
+    // let delegated_authors_match = filter.authors.iter().any(|author| {
+    //     event.tags.iter().any(|tag| match tag {
+    //         Tag::Delegation {
+    //             delegator_pk,
+    //             conditions,
+    //             sig,
+    //         } => filter
+    //             .authors
+    //             .iter()
+    //             .any(|author| author == &delegator_pk.to_string()),
+    //         _ => false,
+    //     })
+    // });
+    println!(
+        "[FILTER][DELEGATED_AUTHORS] matched: {:?}",
+        event.tags.iter().any(|tag| match tag {
+            Tag::Delegation {
+                delegator_pk,
+                conditions,
+                sig,
+            } => filter
+                .authors
+                .iter()
+                .any(|author| author == &delegator_pk.to_string()),
+            _ => false,
+        })
+    );
+
+    event.tags.iter().any(|tag| match tag {
+        Tag::Delegation {
+            delegator_pk,
+            conditions,
+            sig,
+        } => filter
+            .authors
+            .iter()
+            .any(|author| author == &delegator_pk.to_string()),
+        _ => true,
+    })
+}
+
+fn tag_match(filter: &Filter, event: &Event) -> bool {
+    println!(
+        "[FILTER][TAG] matched: {:?}",
+        filter.generic_tags.iter().any(|(key, value)| {
+            event.tags.iter().any(|tag| {
+                let kv = tag.as_vec();
+                key.to_string() == kv[0] && value.iter().any(|vv| vv == &kv[1])
+            })
+        })
+    );
+
+    filter.generic_tags.iter().any(|(key, value)| {
+        event.tags.iter().any(|tag| {
+            let kv = tag.as_vec();
+            key.to_string() == kv[0] && value.iter().any(|vv| vv == &kv[1])
+        })
+    });
+
+    true // TODO: Fix delegated authors check
+}
+
+pub fn interested_in_event(filter: &Filter, event: &Event) -> bool {
+    ids_match(filter, event)
+        && filter.since.map_or(
+            {
+                println!("[FILTER][SINCE][default] matched: {:?}", true);
+                true
+            },
+            |t| {
+                println!("[FILTER][SINCE] matched: {:?}", event.created_at >= t);
+                event.created_at >= t
+            },
+        )
+        && filter.until.map_or(
+            {
+                println!("[FILTER][UNTIL][default] matched: {:?}", true);
+                true
+            },
+            |t| {
+                println!("[FILTER][UNTIL] matched: {:?}", event.created_at <= t);
+                event.created_at <= t
+            },
+        )
+        && kind_match(filter, event.kind)
+        && (pubkeys_match(filter, event)
+            || authors_match(filter, event)
+            || delegated_authors_match(filter, event))
+        && tag_match(filter, event)
+}

src/utils/rejection_handler.rs

@@ -0,0 +1,45 @@
+use super::error::Error;
+
+use std::convert::Infallible;
+use warp::{
+    body::BodyDeserializeError,
+    cors::CorsForbidden,
+    http::StatusCode,
+    reject::{LengthRequired, MethodNotAllowed, PayloadTooLarge, UnsupportedMediaType},
+    reply, Rejection, Reply,
+};
+
+pub async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
+    let code;
+    let body;
+
+    if err.is_not_found() {
+        code = StatusCode::NOT_FOUND;
+        body = reply::json(&Error::new(code, "Not Found".to_owned()));
+    } else if let Some(error) = err.find::<Error>() {
+        code = error.status_code();
+        body = reply::json(error);
+    } else if let Some(cause) = err.find::<CorsForbidden>() {
+        code = StatusCode::FORBIDDEN;
+        body = reply::json(&Error::new(code, cause.to_string()));
+    } else if let Some(cause) = err.find::<BodyDeserializeError>() {
+        code = StatusCode::BAD_REQUEST;
+        body = reply::json(&Error::new(code, cause.to_string()));
+    } else if let Some(cause) = err.find::<LengthRequired>() {
+        code = StatusCode::LENGTH_REQUIRED;
+        body = reply::json(&Error::new(code, cause.to_string()));
+    } else if let Some(cause) = err.find::<PayloadTooLarge>() {
+        code = StatusCode::PAYLOAD_TOO_LARGE;
+        body = reply::json(&Error::new(code, cause.to_string()));
+    } else if let Some(cause) = err.find::<UnsupportedMediaType>() {
+        code = StatusCode::UNSUPPORTED_MEDIA_TYPE;
+        body = reply::json(&Error::new(code, cause.to_string()));
+    } else if let Some(cause) = err.find::<MethodNotAllowed>() {
+        code = StatusCode::METHOD_NOT_ALLOWED;
+        body = reply::json(&Error::new(code, cause.to_string()));
+    } else {
+        code = StatusCode::INTERNAL_SERVER_ERROR;
+        body = reply::json(&Error::new(code, format!("unexpected error: {:?}", err)));
+    }
+    Ok(reply::with_status(body, code))
+}

src/utils/response.rs

@@ -0,0 +1,28 @@
+use super::error::Error;
+
+use anyhow::Result;
+use serde::Serialize;
+use warp::http::header::{HeaderValue, CONTENT_TYPE};
+
+pub struct Response {
+    pub body: Vec<u8>,
+}
+
+impl Response {
+    pub fn new<T: Serialize>(body: &T) -> Result<Self, Error> {
+        Ok(Self {
+            body: serde_json::to_vec(body)?,
+        })
+    }
+}
+
+impl warp::Reply for Response {
+    fn into_response(self) -> warp::reply::Response {
+        let mut res = warp::reply::Response::new(self.body.into());
+        let headers = res.headers_mut();
+
+        headers.insert(CONTENT_TYPE, HeaderValue::from_static("application/json"));
+
+        res
+    }
+}

src/utils/structs.rs

@@ -0,0 +1,135 @@
+use super::error::Error;
+// use super::nostr_filter_helpers;
+use crate::PubSub;
+use nostr::{Event, Filter, SubscriptionId};
+use std::collections::HashMap;
+use std::sync::Arc;
+use tokio::sync::mpsc;
+use uuid::Uuid;
+use warp::ws::Message;
+
+const MAX_SUBSCRIPTIONS: usize = 256;
+const MAX_SUBSCRIPTION_ID_LEN: usize = 256;
+
+#[derive(serde::Serialize, PartialEq, Eq, Debug, Clone)]
+pub struct Subscription {
+    pub id: SubscriptionId,
+    pub filters: Vec<Filter>,
+}
+
+impl Subscription {
+    pub fn new(id: SubscriptionId, filters: Vec<Filter>) -> Self {
+        Self { id, filters }
+    }
+
+    pub fn get_id(&self) -> String {
+        self.id.to_string()
+    }
+
+    pub fn needs_historical_events(&self) -> bool {
+        self.filters.iter().any(|f| f.limit != Some(0))
+    }
+
+    pub fn interested_in_event(&self, event: &Event) -> bool {
+        log::info!("[Subscription] Checking if client is interested in the new event");
+        for filter in &self.filters {
+            if filter.match_event(event) {
+                log::info!("[Subscription] found filter that matches the event");
+                return true;
+            }
+        }
+        false
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Client {
+    client_ip_addr: String,
+    pub client_id: Uuid,
+    pub client_connection: Option<mpsc::UnboundedSender<Result<Message, Error>>>,
+    pub subscriptions: HashMap<String, Subscription>,
+    max_subs: usize,
+}
+
+impl Client {
+    pub fn new(client_ip_addr: String) -> Self {
+        Self {
+            client_ip_addr,
+            client_id: Uuid::new_v4(),
+            client_connection: None,
+            subscriptions: HashMap::new(),
+            max_subs: MAX_SUBSCRIPTIONS,
+        }
+    }
+
+    pub fn ip(&self) -> &str {
+        &self.client_ip_addr
+    }
+
+    pub fn subscribe(&mut self, subscription: Subscription) -> Result<(), Error> {
+        let k = subscription.get_id();
+        let sub_id_len = k.len();
+        if sub_id_len > MAX_SUBSCRIPTION_ID_LEN {
+            log::debug!(
+                "Ignoring sub request with excessive length: ({})",
+                sub_id_len
+            );
+
+            return Err(Error::bad_request("sub request is too long"));
+        }
+
+        if self.subscriptions.contains_key(&k) {
+            self.subscriptions.remove(&k);
+            self.subscriptions.insert(k, subscription.clone());
+
+            log::debug!(
+                "replaced existing subscription (cid: {}, sub: {:?})",
+                self.client_id,
+                subscription.get_id()
+            );
+
+            return Ok(());
+        }
+
+        if self.subscriptions.len() >= self.max_subs {
+            return Err(Error::bad_request("max subs exceeded"));
+        }
+
+        // Insert subscription
+        self.subscriptions.insert(k, subscription);
+        log::debug!(
+            "registered new subscription, currently have {} active subs (cid: {})",
+            self.subscriptions.len(),
+            self.client_id
+        );
+        Ok(())
+    }
+
+    pub fn unsubscribe(&mut self, subscription_id: SubscriptionId) {
+        self.subscriptions.remove(&subscription_id.to_string());
+        log::debug!(
+            "removed subscription, currently have {} active subs (cid: {})",
+            self.subscriptions.len(),
+            self.client_id
+        );
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Context {
+    pub pubsub: Arc<PubSub>,
+}
+
+impl Default for Context {
+    fn default() -> Self {
+        panic!("Use Context::new() to initialize Contexr");
+    }
+}
+
+impl Context {
+    pub fn new() -> Self {
+        let pubsub = Arc::new(PubSub::new());
+
+        Self { pubsub }
+    }
+}

templates/index.html

@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Registration</title>
+    </head>
+  <body>
+    <div id="app">
+      <h1>Create new user</h1>
+        <form action="/register" method="post" id="signup">
+          <h1>Sign Up</h1>
+	  <div class="field">
+	    <label for="name">Name:</label>
+	    <input type="text" id="name" name="name" placeholder="Enter your profile name" />
+	    <small></small>
+	  </div>
+	  <div class="field">
+	    <label for="email">PubKey:</label>
+	    <input type="text" id="pubkey" name="pubkey" placeholder="Enter your pubkey" />
+	    <small></small>
+	  </div>
+	  <button type="submit">Register</button>
+        </form> 
+    </div>
+  </body>
+  <script>
+    const form = document.getElementById('signup');
+
+    form.addEventListener('submit', async (event) => {
+      // stop form submission
+	event.preventDefault();
+
+	const name = form.elements['name'];
+	const pubkey = form.elements['pubkey'];
+
+	// getting the element's value
+	let userName = name.value;
+	let pubKey = pubkey.value;
+
+	console.log(`${userName}:${pubKey}`);
+	const data = { name: userName, pubkey: pubKey};
+
+	// Send user data
+	await postJSON(data);
+    });
+
+    async function postJSON(data) {
+	try {
+	    const response = await fetch("http://localhost:8085/register", {
+		method: "POST",
+		headers: {
+		    "Content-Type": "application/json",
+		},
+		body: JSON.stringify(data),
+	    });
+
+	    const result = await response.json();
+	    console.log("Success:", result);
+	} catch (error) {
+	    console.error("Error:", error);
+	}
+    }
+  </script>
+</html>

templates/index.stpl

@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
+    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
+    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
+    <link rel="manifest" href="/site.webmanifest">
+    <title>Registration</title>
+    </head>
+  <body>
+    <div id="app">
+      <h1>Create new user</h1>
+        <form action="/register" method="post" id="signup">
+          <h1>Sign Up</h1>
+	  <div class="field">
+	    <label for="name">Name:</label>
+	    <input type="text" id="name" name="name" placeholder="Enter your profile name" />
+	    <small></small>
+	  </div>
+	  <div class="field">
+	    <label for="email">PubKey:</label>
+	    <input type="text" id="pubkey" name="pubkey" placeholder="Enter your pubkey" />
+	    <small></small>
+	  </div>
+	  <button type="submit">Register</button>
+        </form> 
+    </div>
+  </body>
+  <script>
+    const form = document.getElementById('signup');
+
+    form.addEventListener('submit', async (event) => {
+      // stop form submission
+	event.preventDefault();
+
+	const name = form.elements['name'];
+	const pubkey = form.elements['pubkey'];
+
+	// getting the element's value
+	let userName = name.value;
+	let pubKey = pubkey.value;
+
+	console.log(`${userName}:${pubKey}`);
+	const data = { name: userName, pubkey: pubKey};
+
+	// Send user data
+	await postJSON(data);
+    });
+
+    async function postJSON(data) {
+	try {
+	    const response = await fetch("http://localhost:8085/register", {
+		method: "POST",
+		headers: {
+		    "Content-Type": "application/json",
+		},
+		body: JSON.stringify(data),
+	    });
+
+	    const result = await response.json();
+	    console.log("Success:", result);
+	} catch (error) {
+	    console.error("Error:", error);
+	}
+    }
+  </script>
+</html>

templates/static/site.webmanifest

@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}

www/static/site.webmanifest

@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}