Send message through WebSocket fro new conversation messages

src/controllers/conversations_controller.rs

@@ -12,12 +12,17 @@ use crate::api_data::res_count_unread_conversations::ResultCountUnreadConversati
 use crate::api_data::res_create_conversation::ResCreateConversation;
 use crate::api_data::res_find_private_conversations::ResFindPrivateConversations;
 use crate::controllers::routes::RequestResult;
+use crate::controllers::user_ws_controller;
+use crate::controllers::user_ws_controller::WsConnection;
 use crate::data::base_request_handler::BaseRequestHandler;
+use crate::data::error::Res;
 use crate::data::http_request_handler::HttpRequestHandler;
 use crate::data::new_conversation::NewConversation;
 use crate::data::new_conversation_message::NewConversationMessage;
 use crate::data::user::UserID;
-use crate::helpers::{conversations_helper, user_helper};
+use crate::data::user_ws_message::UserWsMessage;
+use crate::helpers::{conversations_helper, events_helper, user_helper};
+use crate::helpers::events_helper::Event;
 use crate::utils::string_utils::remove_html_nodes;
 
 /// Create a new conversation
@@ -334,4 +339,23 @@ pub fn delete_message(r: &mut HttpRequestHandler) -> RequestResult {
     conversations_helper::delete_message_by_id(msg_id)?;
 
     r.success("The message has been successfully deleted!")
+}
+
+/// Events handler
+pub fn handle_event(e: &events_helper::Event) -> Res {
+    match e {
+        Event::NewConversationMessage(msg) => {
+            user_ws_controller::send_message_to_specific_connections(
+                |f| f.conversations.contains(&msg.conv_id),
+                |_| UserWsMessage::no_id_message("new_conv_message", ConversationMessageAPI::new(msg)),
+                Some(|conn: &WsConnection| conversations_helper::mark_user_seen(msg.conv_id, &conn.user_id)),
+            )?;
+        }
+
+        Event::UpdatedConversationMessage(msg) => {}
+        Event::DeleteConversationMessage(msg) => {}
+        _ => {}
+    }
+
+    Ok(())
 }

src/controllers/user_ws_controller.rs

@@ -483,6 +483,31 @@ pub fn send_message_to_users(msg: &UserWsMessage, users: &Vec<UserID>) -> Res {
     Ok(())
 }
 
+/// Send a message to specific users
+pub fn send_message_to_specific_connections<F, M, A>(filter: F, msg_generator: M, after_send: Option<A>) -> Res
+    where F: Fn(&WsConnection) -> bool,
+          M: Fn(&WsConnection) -> Res<UserWsMessage>,
+          A: Fn(&WsConnection) -> Res
+{
+    let connections = get_ws_connections_list()
+        .lock()
+        .unwrap()
+        .iter()
+        .filter(|f| filter(f))
+        .map(|f| f.clone())
+        .collect::<Vec<WsConnection>>();
+
+    for con in connections {
+        send_message(con.session.clone(), &msg_generator(&con)?)?;
+
+        if let Some(cb) = &after_send {
+            cb(&con)?;
+        }
+    }
+
+    Ok(())
+}
+
 /// Check out whether user is connected or not
 pub fn is_user_connected(user_id: &UserID) -> bool {
     get_ws_connections_list().lock().unwrap().iter().any(|c| &c.user_id == user_id)

src/data/user_ws_message.rs

@@ -4,9 +4,22 @@
 
 use serde::{Deserialize, Serialize};
 
+use crate::data::error::Res;
+
 #[derive(Clone, Serialize, Deserialize)]
 pub struct UserWsMessage {
     pub id: Option<String>,
     pub title: String,
     pub data: serde_json::Value,
+}
+
+impl UserWsMessage {
+    /// Construct a new WebSocket message with no ID
+    pub fn no_id_message<T: Serialize>(title: &str, data: T) -> Res<Self> {
+        Ok(UserWsMessage {
+            id: None,
+            title: title.to_string(),
+            data: serde_json::to_value(data)?,
+        })
+    }
 }

src/helpers/conversations_helper.rs

@@ -10,8 +10,9 @@ use crate::data::new_conversation::NewConversation;
 use crate::data::new_conversation_message::NewConversationMessage;
 use crate::data::unread_conversation::UnreadConversation;
 use crate::data::user::UserID;
-use crate::helpers::database;
+use crate::helpers::{database, events_helper};
 use crate::helpers::database::InsertQuery;
+use crate::helpers::events_helper::Event;
 use crate::utils::date_utils::time;
 use crate::utils::user_data_utils::user_data_path;
 
@@ -297,13 +298,13 @@ pub fn send_message(msg: &NewConversationMessage) -> ResultBoxError<()> {
     let t = time();
 
     // Insert the message in the database
-    database::InsertQuery::new(CONV_MESSAGES_TABLE)
+    let msg_id = database::InsertQuery::new(CONV_MESSAGES_TABLE)
         .add_u64("conv_id", msg.conv_id)
         .add_user_id("user_id", &msg.user_id)
         .add_u64("time_insert", t)
         .add_str("message", msg.message.as_str())
         .add_opt_str("image_path", msg.image_path.as_ref())
-        .insert()?;
+        .insert_expect_result()?;
 
     // Update the last activity of the conversation
     database::UpdateInfo::new(CONV_LIST_TABLE)
@@ -323,7 +324,9 @@ pub fn send_message(msg: &NewConversationMessage) -> ResultBoxError<()> {
         .exec()?;
 
     // TODO : send an event (updated_number_unread_conversations)
-    // TODO : send an event (sent_conversation_message)
+
+    // Send an event (sent_conversation_message)
+    events_helper::propagate_event(&Event::NewConversationMessage(&get_single_message(msg_id)?))?;
 
     Ok(())
 }
@@ -335,7 +338,8 @@ pub fn update_message_content(msg_id: u64, new_content: &str) -> ResultBoxError<
         .set_str("message", new_content)
         .exec()?;
 
-    // TODO : send an event (conv_message_updated)
+    // Send an event (conv_message_updated)
+    events_helper::propagate_event(&Event::UpdatedConversationMessage(&get_single_message(msg_id)?))?;
 
     Ok(())
 }
@@ -355,7 +359,8 @@ pub fn delete_message(msg: &ConversationMessage) -> ResultBoxError<()> {
         .cond_u64("ID", msg.id)
         .exec()?;
 
-    // TODO : send en event (conv_message_deleted)
+    // Send en event (conv_message_deleted)
+    events_helper::propagate_event(&Event::DeleteConversationMessage(msg))?;
 
     Ok(())
 }

src/helpers/events_helper.rs

@@ -0,0 +1,30 @@
+//! # Events helper
+//!
+//! @author Pierre Hubert
+
+
+
+use crate::data::error::Res;
+use crate::data::conversation_message::ConversationMessage;
+use crate::controllers::conversations_controller;
+
+pub enum Event<'a> {
+
+    /// Created a new conversation message
+    NewConversationMessage(&'a ConversationMessage),
+
+    /// Updated conversation message
+    UpdatedConversationMessage(&'a ConversationMessage),
+
+    /// Deleted a conversation message
+    DeleteConversationMessage(&'a ConversationMessage),
+
+    /// No event
+    None,
+}
+
+/// Propagate an event through the different components of the application
+pub fn propagate_event(e: &Event) -> Res {
+    conversations_controller::handle_event(e)?;
+    Ok(())
+}

src/helpers/mod.rs

@@ -16,4 +16,5 @@ pub mod survey_helper;
 pub mod comments_helper;
 pub mod notifications_helper;
 pub mod webapp_helper;
-pub mod requests_limit_helper;
+pub mod requests_limit_helper;
+pub mod events_helper;