From 5388aa805469f9782d18555a3ec991c888e38bfb Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Fri, 12 Feb 2021 13:32:36 +0100
Subject: [PATCH] Can request call offer

---
 src/controllers/calls_controller.rs     | 21 ++++++++++++++++++++-
 src/controllers/rtc_relay_controller.rs | 16 ++++++++++++++++
 src/controllers/user_ws_routes.rs       |  1 +
 src/data/call_signal.rs                 |  6 ++++++
 src/helpers/events_helper.rs            |  5 ++++-
 5 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/src/controllers/calls_controller.rs b/src/controllers/calls_controller.rs
index 2fe19bc..155e117 100644
--- a/src/controllers/calls_controller.rs
+++ b/src/controllers/calls_controller.rs
@@ -15,7 +15,7 @@ use crate::api_data::user_calls_config::UserCallsConfig;
 use crate::controllers::routes::RequestResult;
 use crate::controllers::user_ws_controller;
 use crate::data::base_request_handler::BaseRequestHandler;
-use crate::data::call_signal::{CallSignal, IceCandidate, NewUserCallSignal, SdpType};
+use crate::data::call_signal::{CallSignal, IceCandidate, NewUserCallSignal, SdpType, UserCallOfferRequest};
 use crate::data::config::conf;
 use crate::data::conversation::ConvID;
 use crate::data::error::{ExecError, Res};
@@ -290,6 +290,25 @@ pub fn mark_user_ready(r: &mut UserWsRequestHandler) -> Res {
     r.success("Information propagated.")
 }
 
+/// Request an offer from the server
+pub fn request_offer(r: &mut UserWsRequestHandler) -> Res {
+    let call_id = r.post_call_id("callID")?;
+
+    // The ID of the user we stream the audio / video from
+    let peer_id = r.post_call_peer_id(&call_id, "peerID")?;
+
+    if !peer_id.is_valid() || peer_id == r.user_id_ref()? {
+        r.forbidden("You can not request an offer for yourself!".to_string())?;
+    }
+
+    events_helper::propagate_event(&Event::UserRequestedCallOffer(&UserCallOfferRequest {
+        call_hash: gen_call_hash(&call_id, &peer_id),
+        user_id: r.user_id()?,
+    }))?;
+
+    r.success("Request sent")
+}
+
 
 /// Make the user leave the call
 pub fn make_user_leave_call(conv_id: &ConvID, connection: &UserWsConnection) -> Res {
diff --git a/src/controllers/rtc_relay_controller.rs b/src/controllers/rtc_relay_controller.rs
index 5d26b69..05edaef 100644
--- a/src/controllers/rtc_relay_controller.rs
+++ b/src/controllers/rtc_relay_controller.rs
@@ -60,6 +60,14 @@ struct CallUserSignal {
     data: CallUserSignalData,
 }
 
+#[allow(non_snake_case)]
+#[derive(Serialize)]
+struct OfferRequest {
+    title: String,
+    callHash: String,
+    peerId: String,
+}
+
 /// Current WebSocket connection
 static mut ACTIVE_RTC_CONNECTION: Option<Addr<RtcRelayActor>> = None;
 
@@ -277,6 +285,14 @@ pub fn handle_event(e: &events_helper::Event) -> Res {
             })?;
         }
 
+        Event::UserRequestedCallOffer(request) => {
+            send_message_to_relay(OfferRequest {
+                title: "request_offer".to_string(),
+                callHash: request.call_hash.to_string(),
+                peerId: request.user_id.id().to_string(),
+            })?;
+        }
+
         _ => {}
     }
 
diff --git a/src/controllers/user_ws_routes.rs b/src/controllers/user_ws_routes.rs
index ef2064b..39f33f6 100644
--- a/src/controllers/user_ws_routes.rs
+++ b/src/controllers/user_ws_routes.rs
@@ -44,6 +44,7 @@ pub fn get_user_ws_routes() -> Vec<UserWsRoute> {
         UserWsRoute::new("calls/members", calls_controller::get_members_list),
         UserWsRoute::new("calls/signal", calls_controller::on_client_signal),
         UserWsRoute::new("calls/mark_ready", calls_controller::mark_user_ready),
+        UserWsRoute::new("calls/request_offer", calls_controller::request_offer),
     ]
 }
 
diff --git a/src/data/call_signal.rs b/src/data/call_signal.rs
index 3490dc4..9d90ac7 100644
--- a/src/data/call_signal.rs
+++ b/src/data/call_signal.rs
@@ -42,6 +42,12 @@ pub struct NewRtcRelayMessage {
     pub data: String,
 }
 
+/// Request of a user for a call
+pub struct UserCallOfferRequest {
+    pub call_hash: String,
+    pub user_id: UserID,
+}
+
 impl SdpType {
     pub fn from_str(val: &str) -> Res<SdpType> {
         match val {
diff --git a/src/helpers/events_helper.rs b/src/helpers/events_helper.rs
index e773361..f09418c 100644
--- a/src/helpers/events_helper.rs
+++ b/src/helpers/events_helper.rs
@@ -6,7 +6,7 @@
 
 use crate::controllers::{calls_controller, comments_controller, conversations_controller, notifications_controller, rtc_relay_controller, user_ws_controller};
 use crate::data::api_client::APIClient;
-use crate::data::call_signal::{NewRtcRelayMessage, NewUserCallSignal};
+use crate::data::call_signal::{NewRtcRelayMessage, NewUserCallSignal, UserCallOfferRequest};
 use crate::data::comment::Comment;
 use crate::data::conversation::ConvID;
 use crate::data::conversation_message::ConversationMessage;
@@ -62,6 +62,9 @@ pub enum Event<'a> {
     /// Got a new RTC relay message
     NewRTCRelayMessage(&'a NewRtcRelayMessage),
 
+    /// User requested an offer for a call
+    UserRequestedCallOffer(&'a UserCallOfferRequest),
+
     /// No event
     None,
 }