refactor(base): Rename RoomInfo::version to data_format_version.

This patch renames the `RoomInfo::version` field to
`data_format_version` to avoid all possible confusion with the
`room_version` (from `m.room.create`).

crates/matrix-sdk-base/src/rooms/normal.rs

@@ -1577,7 +1577,7 @@ mod tests {
         use crate::{rooms::BaseRoomInfo, sync::UnreadNotificationsCount};
 
         let info = RoomInfo {
-            version: 1,
+            data_format_version: 1,
             room_id: room_id!("!gda78o:server.tld").into(),
             room_state: RoomState::Invited,
             notification_counts: UnreadNotificationsCount {
@@ -3065,21 +3065,21 @@ mod tests {
         });
         let mut room_info: RoomInfo = serde_json::from_value(room_info_json).unwrap();
 
-        assert_eq!(room_info.version, 0);
+        assert_eq!(room_info.data_format_version, 0);
         assert!(room_info.base_info.notable_tags.is_empty());
         assert!(room_info.base_info.pinned_events.is_none());
 
         // Apply migrations with an empty store.
         assert!(room_info.apply_migrations(store.clone()).await);
 
-        assert_eq!(room_info.version, 1);
+        assert_eq!(room_info.data_format_version, 1);
         assert!(room_info.base_info.notable_tags.is_empty());
         assert!(room_info.base_info.pinned_events.is_none());
 
         // Applying migrations again has no effect.
         assert!(!room_info.apply_migrations(store.clone()).await);
 
-        assert_eq!(room_info.version, 1);
+        assert_eq!(room_info.data_format_version, 1);
         assert!(room_info.base_info.notable_tags.is_empty());
         assert!(room_info.base_info.pinned_events.is_none());
 
@@ -3097,16 +3097,16 @@ mod tests {
         store.save_changes(&changes).await.unwrap();
 
         // Reset to version 0 and reapply migrations.
-        room_info.version = 0;
+        room_info.data_format_version = 0;
         assert!(room_info.apply_migrations(store.clone()).await);
 
-        assert_eq!(room_info.version, 1);
+        assert_eq!(room_info.data_format_version, 1);
         assert!(room_info.base_info.notable_tags.contains(RoomNotableTags::FAVOURITE));
         assert!(room_info.base_info.pinned_events.is_some());
 
         // Creating a new room info initializes it to version 1.
         let new_room_info = RoomInfo::new(room_id!("!new_room:localhost"), RoomState::Joined);
-        assert_eq!(new_room_info.version, 1);
+        assert_eq!(new_room_info.data_format_version, 1);
     }
 
     #[async_test]

crates/matrix-sdk-base/src/rooms/room_info.rs

@@ -356,9 +356,10 @@ where
 /// Holds all the info needed to persist a room into the state store.
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct RoomInfo {
-    /// The version of the room info.
-    #[serde(default)]
-    pub(crate) version: u8,
+    /// The version of the room info type. It is used to migrate the `RoomInfo`
+    /// serialization from one version to another.
+    #[serde(default, alias = "version")]
+    pub(crate) data_format_version: u8,
 
     /// The unique room id of the room.
     pub(crate) room_id: OwnedRoomId,
@@ -429,7 +430,7 @@ impl RoomInfo {
     #[doc(hidden)] // used by store tests, otherwise it would be pub(crate)
     pub fn new(room_id: &RoomId, room_state: RoomState) -> Self {
         Self {
-            version: 1,
+            data_format_version: 1,
             room_id: room_id.into(),
             room_state,
             notification_counts: Default::default(),
@@ -948,7 +949,7 @@ impl RoomInfo {
     pub(crate) async fn apply_migrations(&mut self, store: Arc<DynStateStore>) -> bool {
         let mut migrated = false;
 
-        if self.version < 1 {
+        if self.data_format_version < 1 {
             info!("Migrating room info to version 1");
 
             // notable_tags
@@ -992,7 +993,7 @@ impl RoomInfo {
                 }
             }
 
-            self.version = 1;
+            self.data_format_version = 1;
             migrated = true;
         }
 

crates/matrix-sdk-base/src/store/migration_helpers.rs

@@ -105,7 +105,7 @@ impl RoomInfoV1 {
         } = self;
 
         RoomInfo {
-            version: 0,
+            data_format_version: 0,
             room_id,
             room_state: room_type,
             notification_counts,