[fractal] event-actions: Implement Permalink creation for Events

[Marge Bot <marge-bot src gnome org>]

commit ae2f430917259b04e166acc56818567d498acc6f
Author: Kirill Schmidt <kirill schmidt teckids org>
Date:   Sat Sep 3 20:24:23 2022 +0200

    event-actions: Implement Permalink creation for Events
    
    Part-of: <https://gitlab.gnome.org/GNOME/fractal/-/merge_requests/1146>

 data/resources/ui/event-menu.ui   |  5 +++++
 src/session/room/event_actions.rs | 30 +++++++++++++++++++++++++++++-
 2 files changed, 34 insertions(+), 1 deletion(-)
---
diff --git a/data/resources/ui/event-menu.ui b/data/resources/ui/event-menu.ui
index d6dcb24ee..3a8cb63c3 100644
--- a/data/resources/ui/event-menu.ui
+++ b/data/resources/ui/event-menu.ui
@@ -98,6 +98,11 @@
         <attribute name="action">event.save-audio</attribute>
         <attribute name="hidden-when">action-missing</attribute>
       </item>
+      <item>
+        <attribute name="label" translatable="yes">_Permalink</attribute>
+        <attribute name="action">event.permalink</attribute>
+        <attribute name="hidden-when">action-missing</attribute>
+      </item>
     </section>
   </menu>
   <menu id="state_menu_model">
diff --git a/src/session/room/event_actions.rs b/src/session/room/event_actions.rs
index 046683b6d..e3169925a 100644
--- a/src/session/room/event_actions.rs
+++ b/src/session/room/event_actions.rs
@@ -10,7 +10,7 @@ use crate::{
         event_source_dialog::EventSourceDialog,
         room::{Event, RoomAction, SupportedEvent},
     },
-    spawn, toast,
+    spawn, spawn_tokio, toast,
     utils::cache_dir,
     UserFacingError, Window,
 };
@@ -90,6 +90,34 @@ where
             })
         );
 
+        // Create a permalink
+        if event.event_id().is_some() {
+            gtk_macros::action!(
+                &action_group,
+                "permalink",
+                clone!(@weak self as widget, @weak event => move |_, _| {
+                    let matrix_room = event.room().matrix_room();
+                    let event_id = event.event_id().unwrap();
+                    spawn!(clone!(@weak widget => async move {
+                            let handle = spawn_tokio!(async move {
+                                matrix_room.matrix_to_event_permalink(event_id).await
+                            });
+                            match handle.await.unwrap() {
+                                Ok(permalink) => {
+                                        widget.clipboard().set_text(&permalink.to_string());
+                                        toast!(widget, gettext("Permalink copied to clipboard"));
+                                    },
+                                Err(error) => {
+                                    error!("Could not get permalink: {}", error);
+                                    toast!(widget, gettext("Failed to copy the permalink"));
+                                }
+                            }
+                        })
+                    );
+                })
+            );
+        }
+
         if let Some(event) = event.downcast_ref::<SupportedEvent>() {
             if let Some(AnyMessageLikeEventContent::RoomMessage(message)) = event.content() {
                 let user_id = event