Add column last_fetched_at to MyChannel & Thread tables and the migration (#6433)

* Add column last_fetched_at to MyChannel & Thread tables and the migration

* Fix schema tests

* Handle lastFetchAt, retrieve threads on init and properly observe thread unreads (#6436)

* [Gekidou] Set lastFetchAt when fetching posts for a channel (#6437)

* Set lastFetchAt when fetching posts for a channel

* When resetting _preparedState set always to null

* Revert changes in WS

* Handle and set lastFetchedAt for MyChannel in iOS push notification

* feedback review

* iOS fallback to last post createAt if no lastFetchAt set

* Handle lastFetchAt on Android push notifications

* create storePostsForChannel local action

* Fix iOS fallback to last post create_at

Co-authored-by: Daniel Espino García <larkox@gmail.com>

types/database/database.d.ts

@@ -89,7 +89,7 @@ export type HandlePostsArgs = {
 };
 
 export type HandleThreadsArgs = {
-  threads?: Thread[];
+  threads?: ThreadWithLastFetchedAt[];
   prepareRecordsOnly?: boolean;
   teamId?: string;
   loadedInGlobalThreads?: boolean;

types/database/models/servers/my_channel.d.ts

@@ -17,6 +17,9 @@ export default class MyChannelModel extends Model {
     /** last_post_at : The timestamp for any last post on this channel */
     lastPostAt: number;
 
+    /** last_fetched_at : The timestamp when we successfully last fetched post on this channel */
+    lastFetchedAt: number;
+
     /** last_viewed_at : The timestamp showing the user's last viewed post on this channel */
     lastViewedAt: number;
 
@@ -43,4 +46,6 @@ export default class MyChannelModel extends Model {
 
     /** settings: User specific settings/preferences for this channel */
     settings: Relation<MyChannelSettingsModel>;
+
+    resetPreparedState: () => void;
 }

types/database/models/servers/thread.d.ts

@@ -20,6 +20,9 @@ export default class ThreadModel extends Model {
     /** lastReplyAt : The timestamp of when user last replied to the thread. */
     lastReplyAt: number;
 
+    /** last_last_fetched_at_at : The timestamp when we successfully last fetched post on this channel */
+    lastFetchedAt: number;
+
     /** lastViewedAt : The timestamp of when user last viewed the thread. */
     lastViewedAt: number;
 

types/database/raw_values.d.ts

@@ -116,7 +116,7 @@ type RawValue =
   | TeamChannelHistory
   | TeamMembership
   | TeamSearchHistory
-  | Thread
+  | ThreadWithLastFetchedAt
   | ThreadInTeam
   | ThreadParticipant
   | UserProfile