base: Store the room creation content

The power level depends on a bunch of stuff, if no power level event
exists the default for a room creator is 100 while for every other user
is 0, thus we need to know the room creator.

matrix_sdk_base/src/rooms/members.rs

@@ -32,6 +32,7 @@ pub struct RoomMember {
     pub(crate) presence: Arc<Option<PresenceEvent>>,
     pub(crate) power_levles: Arc<Option<SyncStateEvent<PowerLevelsEventContent>>>,
     pub(crate) max_power_level: i64,
+    pub(crate) is_room_creator: bool,
 }
 
 impl RoomMember {
@@ -74,6 +75,6 @@ impl RoomMember {
                     .map(|p| (*p).into())
                     .unwrap_or_else(|| e.content.users_default.into())
             })
-            .unwrap_or(0)
+            .unwrap_or_else(|| if self.is_room_creator { 100 } else { 0 })
     }
 }

matrix_sdk_base/src/rooms/mod.rs

@@ -2,7 +2,7 @@ mod members;
 mod normal;
 mod stripped;
 
-use matrix_sdk_common::identifiers::UserId;
+use matrix_sdk_common::{events::room::create::CreateEventContent, identifiers::UserId};
 pub use normal::{Room, RoomInfo, RoomType};
 pub use stripped::{StrippedRoom, StrippedRoomInfo};
 
@@ -125,6 +125,7 @@ pub struct BaseRoomInfo {
     pub topic: Option<String>,
     pub encryption: Option<EncryptionEventContent>,
     pub tombstone: Option<TombstoneEventContent>,
+    pub create: Option<CreateEventContent>,
     pub max_power_level: i64,
 }
 
@@ -143,6 +144,14 @@ impl BaseRoomInfo {
                 self.name = n.name().map(|n| n.to_string());
                 true
             }
+            AnyStateEventContent::RoomCreate(c) => {
+                if self.create.is_none() {
+                    self.create = Some(c.clone());
+                    true
+                } else {
+                    false
+                }
+            }
             AnyStateEventContent::RoomCanonicalAlias(a) => {
                 self.canonical_alias = a.alias.clone();
                 true
@@ -179,6 +188,7 @@ impl Default for BaseRoomInfo {
             encryption: None,
             tombstone: None,
             max_power_level: 100,
+            create: None,
         }
     }
 }

matrix_sdk_base/src/rooms/normal.rs

@@ -287,6 +287,15 @@ impl Room {
         let presence = self.store.get_presence_event(user_id).await;
         let profile = self.store.get_profile(self.room_id(), user_id).await;
         let max_power_level = self.max_power_level();
+        let is_room_creator = self
+            .inner
+            .read()
+            .unwrap()
+            .base_info
+            .create
+            .as_ref()
+            .map(|c| &c.creator == user_id)
+            .unwrap_or(false);
 
         let power = self
             .store
@@ -310,6 +319,7 @@ impl Room {
                 presence: presence.into(),
                 power_levles: power.into(),
                 max_power_level,
+                is_room_creator,
             })
     }
 }