From 59034086e95800e99f44bd9b8ca1e11f7ea7ee4e Mon Sep 17 00:00:00 2001
From: Edward Shen <code@eddie.sh>
Date: Thu, 5 May 2022 22:01:27 -0700
Subject: [PATCH] initial commit

---
 .gitignore  |    3 +
 Cargo.lock  | 2830 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   18 +
 src/main.rs |  199 ++++
 4 files changed, 3050 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ffc7218
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
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\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
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index 0000000..e92fa29
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+dependencies = [
+ "lazy_static",
+ "log",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "ansi_term",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing-core",
+ "tracing-log",
+]
+
+[[package]]
+name = "try-lock"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
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+
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+ "idna",
+ "matches",
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+ "owo-colors",
+ "parking_lot 0.11.2",
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+ "cfg-if 1.0.0",
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+]
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+[[package]]
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+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2 1.0.36",
+ "quote 1.0.18",
+ "syn 1.0.92",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
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+ "wasm-bindgen",
+ "web-sys",
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+ "quote 1.0.18",
+ "syn 1.0.92",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
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+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
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+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
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+checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "zeroize"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d68d9dcec5f9b43a30d38c49f91dfedfaac384cb8f085faca366c26207dd1619"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
+dependencies = [
+ "proc-macro2 1.0.36",
+ "quote 1.0.18",
+ "syn 1.0.92",
+ "synstructure",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..7208407
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "matrix-bot"
+version = "0.1.0"
+authors = ["Edward Shen <code@eddie.sh>"]
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+matrix-sdk = "0.4"
+tokio = { version = "1", features = ["full"] }
+url = "2.1"
+tracing = "0.1"
+tracing-subscriber = "0.3"
+toml = "0.5"
+clap = { version = "3", features = ["derive"] }
+serde = { version = "1", features = ["derive"] }
+uwuify = "0.2"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..b5d90f4
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,199 @@
+#![warn(clippy::nursery, clippy::pedantic)]
+
+use std::path::PathBuf;
+use std::time::Duration;
+
+use clap::Parser;
+use matrix_sdk::room::{Joined, Room};
+use matrix_sdk::ruma::events::room::member::MemberEventContent;
+use matrix_sdk::ruma::events::room::message::{
+    MessageEventContent, MessageType, TextMessageEventContent,
+};
+use matrix_sdk::ruma::events::{StrippedStateEvent, SyncMessageEvent};
+use matrix_sdk::ruma::UserId;
+use matrix_sdk::{Client, ClientConfig, Result, Session, SyncSettings};
+use serde::{Deserialize, Serialize};
+use tracing::{error, info};
+
+#[derive(Parser)]
+struct Args {
+    #[clap(subcommand)]
+    subcommand: Command,
+}
+
+#[derive(Parser)]
+enum Command {
+    Login {
+        user_id: UserId,
+        password: String,
+    },
+    Run {
+        #[clap(default_value = "config.toml")]
+        config_path: PathBuf,
+        #[clap(default_value = "data")]
+        store_path: PathBuf,
+    },
+}
+
+#[derive(Serialize, Deserialize)]
+struct TomlConfig {
+    session: Session,
+}
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    tracing_subscriber::fmt::init();
+    let args = Args::parse();
+
+    match args.subcommand {
+        Command::Login { user_id, password } => handle_login(user_id, &password).await,
+        Command::Run {
+            config_path,
+            store_path,
+        } => handle_run(config_path, store_path).await,
+    }
+}
+
+async fn handle_login(user_id: UserId, password: &str) -> Result<()> {
+    let client = Client::new_from_user_id(user_id.clone()).await?;
+    let resp = client
+        .login(user_id.localpart(), password, None, None)
+        .await?;
+
+    info!("Config generated. Please store this somewhere (like config.toml)!");
+    println!(
+        "\n\n{}",
+        toml::to_string_pretty(&TomlConfig {
+            session: Session {
+                access_token: resp.access_token,
+                device_id: resp.device_id,
+                user_id,
+            }
+        })
+        .unwrap()
+    );
+
+    Ok(())
+}
+
+async fn handle_run(config_path: PathBuf, store_path: PathBuf) -> Result<()> {
+    let data = std::fs::read_to_string(config_path)?;
+    let config: TomlConfig = toml::from_str(&data).unwrap();
+
+    let client_config = ClientConfig::default().store_path(store_path);
+    let client =
+        Client::new_from_user_id_with_config(config.session.user_id.clone(), client_config).await?;
+    client.restore_login(config.session.clone()).await?;
+
+    info!(user = %config.session.user_id, device_id = %config.session.device_id, "Logged in");
+
+    let sync_settings = SyncSettings::default();
+
+    // Sync once before registering events to not double-send events on boot.
+    client.sync_once(sync_settings.clone()).await?;
+
+    client
+        .register_event_handler(auto_join)
+        .await
+        .register_event_handler(on_room_message)
+        .await;
+
+    // Syncing is important to synchronize the client state with the server.
+    // This method will never return.
+    client.sync(sync_settings).await;
+
+    Ok(())
+}
+
+async fn auto_join(
+    room_member: StrippedStateEvent<MemberEventContent>,
+    client: Client,
+    room: Room,
+) -> Result<()> {
+    if room_member.state_key != client.user_id().await.unwrap() {
+        return Ok(());
+    }
+
+    if let Room::Invited(room) = room {
+        info!("Autojoining room {}", room.room_id());
+        let mut delay = 2;
+
+        while let Err(err) = room.accept_invitation().await {
+            // retry autojoin due to synapse sending invites, before the
+            // invited user can join for more information see
+            // https://github.com/matrix-org/synapse/issues/4345
+            error!(
+                room_id = ?room.room_id(),
+                ?err,
+                "Failed to join room, retrying in {delay}s",
+            );
+
+            tokio::time::sleep(Duration::from_secs(delay)).await;
+            delay *= 2;
+
+            if delay > 3600 {
+                error!(
+                    room_id = ?room.room_id(),
+                    ?err,
+                    "Failed to join room. Giving up.",
+                );
+                break;
+            }
+        }
+
+        info!(room_id = ?room.room_id(), "Successfully joined room.");
+    }
+
+    Ok(())
+}
+
+async fn on_room_message(event: SyncMessageEvent<MessageEventContent>, room: Room) -> Result<()> {
+    if let Room::Joined(room) = room {
+        parse_message(event, room).await?;
+    }
+
+    Ok(())
+}
+
+async fn parse_message(event: SyncMessageEvent<MessageEventContent>, room: Joined) -> Result<()> {
+    let message = match &event.content.msgtype {
+        MessageType::Text(TextMessageEventContent { body, .. }) => body.clone(),
+        _ => return Ok(()),
+    };
+
+    if let Some(message) = message.strip_prefix("!") {
+        if let Some((command, args)) = message.split_once(" ") {
+            match command {
+                "source" => source(room).await?,
+                "uwu" => uwuify(room, args).await?,
+                _ => unsupported_command(event, room, command).await?,
+            }
+        }
+    }
+
+    Ok(())
+}
+
+async fn source(room: Joined) -> Result<()> {
+    let content = MessageEventContent::text_plain("https://git.eddie.sh/edward/matrix-bot");
+    room.send(content, None).await?;
+    Ok(())
+}
+
+async fn uwuify(room: Joined, message: &str) -> Result<()> {
+    let content = MessageEventContent::text_plain(uwuifier::uwuify_str_sse(message));
+    room.send(content, None).await?;
+    Ok(())
+}
+
+async fn unsupported_command(
+    original_event: SyncMessageEvent<MessageEventContent>,
+    room: Joined,
+    command: &str,
+) -> Result<()> {
+    let resp = original_event.into_full_event(room.room_id().to_owned());
+    let content =
+        MessageEventContent::notice_reply_plain(format!("Unknown command `{command}`"), &resp);
+    room.send(content, None).await?;
+    Ok(())
+}