websocket for sending chat messages.

src/chat/handlers.rs

@@ -2,12 +2,15 @@
 use axum::{
     extract::{
         FromRequest,FromRequestParts, State,
-    }, http::StatusCode, response::{sse::KeepAlive, IntoResponse}
-};
     
+    }, http::StatusCode, response::{sse::KeepAlive, IntoResponse},
+    
+};
+//use axum::extract::ws::Message;
 use chrono::NaiveDateTime;
 use rusqlite::params;
 use serde::Serialize;
+use serde_json::json;
 
 use crate::chat::extractor::{
 AddUserConversationPayload, CreateConversationPayload, GetMessagesPayload, SendMessagePayload
@@ -112,10 +115,11 @@ pub async fn send_message(
     };
 
     if !statement.exists(params![user_id, payload.conv_id])
-        .map_err(|_| (StatusCode::INTERNAL_SERVER_ERROR, "Query failed".to_string())).unwrap()
+        .map_err(|_| (StatusCode::INTERNAL_SERVER_ERROR, "Query failed".to_string()))
+        .unwrap()
     {
         // Early exit if not creator
-        return ((StatusCode::FORBIDDEN, "Not the creator".to_string()));
+        return ((StatusCode::FORBIDDEN, "Not part of the conversation".to_string()));
     }
 
     let result = conn.execute(
@@ -123,21 +127,57 @@ pub async fn send_message(
     params![&user_id, &payload.message, &payload.conv_id],
     );
 
+    match result {
+        Ok(rows) if rows > 0 => {
+            // --- send to conversation participants ---
+            let mut stmt_participants = conn
+                .prepare("SELECT user_id FROM conversation_participants WHERE conversation_id = ?1")
+                .expect("prepare participants failed");
+
+            let participant_ids: Vec<i32> = stmt_participants
+                .query_map(params![payload.conv_id], |row| row.get(0))
+                .expect("query_map failed")
+                .filter_map(Result::ok)
+                .collect();
+
+            if let Some(hotel_users) = state.ws_map.get(&hotel_id) {
+                let update_msg = serde_json::json!({
+                    "conv_id": payload.conv_id,
+                    "sender": user_id,
+                    "content": payload.message,
+                })
+                .to_string();
+
+                for uid in &participant_ids {
+                    if let Some(sender) = hotel_users.get(&uid) {
+                        let _ = sender.send(axum::extract::ws::Message::Text(update_msg.clone().into()));
+                    }
+                }
+            }
+
+            (StatusCode::OK, format!("sent message: {}, to users:{:?}", payload.message, participant_ids))
+        }
+        Ok(_) => (StatusCode::NOT_FOUND, "Conversation not found".to_string()),
+        Err(err) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Error from DB: {err}")),
+    }
+/*
     match result {
         Ok(rows) if rows > 0 => (StatusCode::OK, "added message succesfully".to_string()),
         Ok(_) => (StatusCode::NOT_FOUND, "not able to add the message, conversation may not exist".to_string() ),
         Err(err) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Error when adding the message : {err}")),
     }
+*/
+
 }
 
 
- #[derive(Debug, Serialize)]
-    struct Message {
+#[derive(Debug, Serialize)]
+struct Message {
     id: i32,
     sender_id: i32,
     content: String,
     sent_at: String,
-    }
+}
 
 
 pub async fn get_message(