Connects, autojoins room, and responds to messages that aren't made by

itself.

Signed-off-by: Louis Hollingworth <louis@hollingworth.nl>

.gitignore

@@ -1,2 +1,3 @@
 /target
 .DS_Store
+.env

Cargo.lock

@@ -992,20 +992,6 @@ dependencies = [
  "want",
 ]
 
-[[package]]
-name = "hyper-rustls"
-version = "0.24.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec3efd23720e2049821a693cbc7e65ea87c72f1c58ff2f9522ff332b1491e590"
-dependencies = [
- "futures-util",
- "http",
- "hyper",
- "rustls",
- "tokio",
- "tokio-rustls",
-]
-
 [[package]]
 name = "hyper-tls"
 version = "0.5.0"
@@ -1872,7 +1858,6 @@ dependencies = [
  "http",
  "http-body",
  "hyper",
- "hyper-rustls",
  "hyper-tls",
  "ipnet",
  "js-sys",
@@ -1883,15 +1868,12 @@ dependencies = [
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
- "rustls",
- "rustls-pemfile",
  "serde",
  "serde_json",
  "serde_urlencoded",
  "system-configuration",
  "tokio",
  "tokio-native-tls",
- "tokio-rustls",
  "tokio-util",
  "tower-service",
  "url",
@@ -1899,24 +1881,9 @@ dependencies = [
  "wasm-bindgen-futures",
  "wasm-streams",
  "web-sys",
- "webpki-roots",
  "winreg",
 ]
 
-[[package]]
-name = "ring"
-version = "0.17.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "684d5e6e18f669ccebf64a92236bb7db9a34f07be010e3627368182027180866"
-dependencies = [
- "cc",
- "getrandom 0.2.11",
- "libc",
- "spin",
- "untrusted",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "ruma"
 version = "0.7.4"
@@ -2036,37 +2003,6 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "rustls"
-version = "0.21.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "629648aced5775d558af50b2b4c7b02983a04b312126d45eeead26e7caa498b9"
-dependencies = [
- "log",
- "ring",
- "rustls-webpki",
- "sct",
-]
-
-[[package]]
-name = "rustls-pemfile"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
-dependencies = [
- "base64 0.21.5",
-]
-
-[[package]]
-name = "rustls-webpki"
-version = "0.101.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b6275d1ee7a1cd780b64aca7726599a1dbc893b1e64144529e55c3c2f745765"
-dependencies = [
- "ring",
- "untrusted",
-]
-
 [[package]]
 name = "ryu"
 version = "1.0.15"
@@ -2088,16 +2024,6 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
-[[package]]
-name = "sct"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da046153aa2352493d6cb7da4b6e5c0c057d8a1d0a9aa8560baffdd945acd414"
-dependencies = [
- "ring",
- "untrusted",
-]
-
 [[package]]
 name = "security-framework"
 version = "2.9.2"
@@ -2272,12 +2198,6 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
-[[package]]
-name = "spin"
-version = "0.9.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
-
 [[package]]
 name = "spki"
 version = "0.5.4"
@@ -2440,16 +2360,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "tokio-rustls"
-version = "0.24.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c28327cf380ac148141087fbfb9de9d7bd4e84ab5d2c28fbc911d753de8a7081"
-dependencies = [
- "rustls",
- "tokio",
-]
-
 [[package]]
 name = "tokio-stream"
 version = "0.1.14"
@@ -2616,12 +2526,6 @@ dependencies = [
  "subtle",
 ]
 
-[[package]]
-name = "untrusted"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
-
 [[package]]
 name = "url"
 version = "2.5.0"
@@ -2822,12 +2726,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "webpki-roots"
-version = "0.25.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1778a42e8b3b90bff8d0f5032bf22250792889a5cdc752aa0020c84abe3aaf10"
-
 [[package]]
 name = "wildmatch"
 version = "2.1.1"

Cargo.toml

@@ -9,7 +9,7 @@ edition = "2021"
 anyhow = "1.0.75"
 deepl = "0.4.4"
 dotenvy = "0.15.7"
-matrix-sdk = { version = "0.6.2", features = ["anyhow", "markdown", "rustls-tls"] }
+matrix-sdk = { version = "0.6.2", features = ["anyhow", "markdown"] }
 tokio = { version = "1.34.0", features = ["macros", "rt-multi-thread", "full"] }
 tracing = "0.1.40"
 tracing-subscriber = "0.3.18"

src/main.rs

@@ -1,4 +1,98 @@
-fn main() {
+use matrix_sdk::ruma::events::room::message;
-    tracing_subscriber::fmt::init();
+
-    println!("Hello, world!");
+async fn on_room_message(event: message::OriginalSyncRoomMessageEvent, room: matrix_sdk::room::Room, client: matrix_sdk::Client) {
+    let cl = client.clone();
+    let this_uid = cl.user_id().unwrap();
+    if event.clone().sender.matrix_uri(false) == this_uid.matrix_uri(false) {
+        return;
+    }
+    let message::MessageType::Text(text_content) = event.clone().content.msgtype else {
+        return;
+    };
+
+
+    let r = client.get_joined_room(room.room_id()).unwrap();
+
+    if text_content.body.contains("!diru") {
+        if text_content.body.contains("dpl") {
+            deepl_translation(event, r, &text_content.body).await;
+        }
+    }
+}
+
+async fn autojoin_room(room_member: matrix_sdk::ruma::events::room::member::StrippedRoomMemberEvent, client: matrix_sdk::Client, room: matrix_sdk::room::Room) {
+    if room_member.state_key != client.user_id().unwrap() {
+        return;
+    }
+
+    tokio::spawn(async move {
+        let rid = room.room_id();
+        tracing::info!("Autojoining {}", rid);
+        let mut delay = 2;
+        let r = client.get_invited_room(rid).unwrap();
+        while let Err(err) = r.accept_invitation().await {
+            eprintln!("Failed to join room {} ({err:?}), retrying in {delay}s", room.room_id());
+            tokio::time::sleep(tokio::time::Duration::from_secs(delay)).await;
+            delay *= 2;
+            if delay > 3600 {
+                eprintln!("Can't join room {} ({err:?})", room.room_id());
+                break;
+            }
+        }
+    });
+}
+
+async fn deepl_translation(event: message::OriginalSyncRoomMessageEvent, room: matrix_sdk::room::Joined, content: &str) {
+    let txn_id = matrix_sdk::ruma::TransactionId::new();
+    let msg = message::RoomMessageEventContent::text_plain(format!("{}", content))
+        .make_reply_to(&event.clone().into_full_event(room.room_id().into()));
+    room.send(msg, Some(&txn_id)).await.unwrap();
+}
+
+async fn connect_to_matrix(hs: String, username: String, passwd:String) -> anyhow::Result<()> {
+    let client = matrix_sdk::Client::builder().homeserver_url(hs).build().await.unwrap();
+    let device_id = std::env::var("DEVICE_ID");
+
+    match device_id {
+        Ok(id) => {
+            client
+                .login_username(&username, &passwd)
+                .device_id(&id)
+                .send()
+                .await?;
+        },
+        Err(_) => {
+            client.login_username(&username, &passwd)
+                .initial_device_display_name("Diru Development")
+                .send()
+                .await?;
+        }
+    }
+
+    println!("Logged in as {username}");
+    let response = client.sync_once(matrix_sdk::config::SyncSettings::default()).await?;
+    client.add_event_handler(on_room_message);
+    client.add_event_handler(autojoin_room);
+    let stg = matrix_sdk::config::SyncSettings::default().token(response.next_batch);
+    client.sync(stg).await?;
+
+    Ok(())
+}
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    dotenvy::dotenv().ok();
+    tracing_subscriber::fmt::init();
+
+    let (homeserver_url, username, passwd) = match (std::env::var("HOMESERVER_URL"), std::env::var("MATRIX_BOT_NAME"), std::env::var("MATRIX_BOT_PASSWD")) {
+        (Ok(a), Ok(b), Ok(c)) => (a, b, c),
+        _ => {
+            eprintln!("Please ensure the HOMESERVER_URL, MATRIX_BOT_NAME, and MATRIX_BOT_PASSWD environment variables are set.");
+            std::process::exit(1)
+        }
+    };
+
+    connect_to_matrix(homeserver_url, username, passwd).await?;
+
+    Ok(())
 }