feat: make identity server store user instance/guild IDs

foxchat/src/c2s/event.rs

@@ -18,7 +18,8 @@ pub enum Payload {
     /// Hello message, sent after authentication succeeds
     Hello {
         heartbeat_interval: u64,
-        guilds: Vec<String>,
+        guilds: Vec<GuildInstance>,
+        instances: Vec<InstanceId>,
     },
     Identify {
         token: String,
@@ -34,3 +35,15 @@ pub enum Payload {
         timestamp: u64,
     }
 }
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct InstanceId {
+    pub id: String,
+    pub domain: String,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct GuildInstance {
+    pub guild_id: String,
+    pub instance_id: String,
+}

foxchat/src/error/mod.rs

@@ -1,5 +1,6 @@
 use axum::http::header::ToStrError;
 use thiserror::Error;
+use eyre::Result;
 
 #[derive(Error, Debug, Copy, Clone)]
 pub enum FoxError {
@@ -31,6 +32,8 @@ pub enum FoxError {
     ChannelNotFound,
     #[error("internal server error while proxying")]
     ProxyInternalServerError,
+    #[error("invalid RestEvent for this instance type")]
+    InvalidRestEvent,
 }
 
 impl From<ToStrError> for FoxError {
@@ -44,3 +47,16 @@ impl From<chrono::ParseError> for FoxError {
         Self::InvalidDate
     }
 }
+
+pub trait ToFoxError<T> {
+    fn to_fox_error(self) -> Result<T>;
+}
+
+impl<T> ToFoxError<T> for Option<T> {
+    fn to_fox_error(self) -> Result<T> {
+        match self {
+            Some(t) => Ok(t),
+            None => Err(FoxError::ResponseNotOk.into())
+        }
+    }
+}

foxchat/src/fed/request.rs

@@ -34,7 +34,7 @@ pub async fn get<R: DeserializeOwned>(
     host: &str,
     path: &str,
     user_id: Option<String>,
-) -> Result<R> {
+) -> Result<Option<R>> {
     let (signature, date) = build_signature(private_key, host, path, None, user_id.clone());
 
     let mut req = CLIENT
@@ -60,7 +60,7 @@ pub async fn post<T: Serialize, R: DeserializeOwned>(
     path: &str,
     user_id: Option<String>,
     body: &T,
-) -> Result<R> {
+) -> Result<Option<R>> {
     let body = serde_json::to_string(body)?;
 
     let (signature, date) =
@@ -85,7 +85,11 @@ pub async fn post<T: Serialize, R: DeserializeOwned>(
     handle_response(resp).await.wrap_err("handling response")
 }
 
-async fn handle_response<R: DeserializeOwned>(resp: Response) -> Result<R, ResponseError> {
+async fn handle_response<R: DeserializeOwned>(resp: Response) -> Result<Option<R>, ResponseError> {
+    if resp.status() == StatusCode::NO_CONTENT {
+        return Ok(None);
+    }
+
     if resp.status() != StatusCode::OK {
         let status = resp.status().as_u16();
 
@@ -105,7 +109,7 @@ async fn handle_response<R: DeserializeOwned>(resp: Response) -> Result<R, Respo
         .json::<R>()
         .await
         .map_err(|_| ResponseError::JsonError)?;
-    Ok(parsed)
+    Ok(Some(parsed))
 }
 
 #[derive(thiserror::Error, Debug, Clone)]

foxchat/src/fed/signature.rs

@@ -45,8 +45,6 @@ fn plaintext_string(
         raw_time, host, request_path, raw_content_length, raw_user_id
     );
 
-    println!("{}", s);
-
     s
 }
 

foxchat/src/http/response.rs

@@ -44,6 +44,7 @@ pub enum ErrorCode {
     MissingSignature,
     GuildNotFound,
     Unauthorized,
+    InvalidRestEvent,
 }
 
 impl From<sqlx::Error> for ApiError {
@@ -152,7 +153,12 @@ impl From<FoxError> for ApiError {
                 status: StatusCode::INTERNAL_SERVER_ERROR,
                 code: ErrorCode::InternalServerError,
                 message: "Internal server error".into(),
-            }
+            },
+            FoxError::InvalidRestEvent => ApiError {
+                status: StatusCode::BAD_REQUEST,
+                code: ErrorCode::InvalidRestEvent,
+                message: "Invalid RestEvent for this instance type".into(),
+            },
         }
     }
 }

foxchat/src/s2s/http/mod.rs

@@ -1,3 +1,5 @@
 mod hello;
+mod rest_event;
 
 pub use hello::{HelloRequest, HelloResponse, NodeResponse};
+pub use rest_event::RestEvent;

foxchat/src/s2s/http/rest_event.rs

@@ -0,0 +1,18 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(tag = "t", content = "d", rename_all = "SCREAMING_SNAKE_CASE")]
+pub enum RestEvent {
+    /// Sent when a user creates or joins a guild (chat -> identity)
+    GuildJoin { guild_id: String, user_id: String },
+    /// Sent when a user leaves or is removed from a guild (chat -> identity)
+    GuildLeave { guild_id: String, user_id: String },
+    /// Sent when a user updates their profile (identity -> chat)
+    UserUpdate {
+        user_id: String,
+        username: Option<String>,
+        avatar: Option<String>,
+    },
+    /// Sent when a user deletes their account (identity -> chat)
+    UserDelete { user_id: String },
+}