Automatic session reset

ts/models/conversations.ts

@@ -2277,6 +2277,35 @@ export class ConversationModel extends window.Backbone.Model<
     return this.setVerified();
   }
 
+  async addChatSessionRefreshed(receivedAt: number): Promise<void> {
+    window.log.info(
+      `addChatSessionRefreshed: adding for ${this.idForLogging()}`
+    );
+
+    const message = ({
+      conversationId: this.id,
+      type: 'chat-session-refreshed',
+      sent_at: receivedAt,
+      received_at: receivedAt,
+      unread: 1,
+      // TODO: DESKTOP-722
+      // this type does not fully implement the interface it is expected to
+    } as unknown) as typeof window.Whisper.MessageAttributesType;
+
+    const id = await window.Signal.Data.saveMessage(message, {
+      Message: window.Whisper.Message,
+    });
+    const model = window.MessageController.register(
+      id,
+      new window.Whisper.Message({
+        ...message,
+        id,
+      })
+    );
+
+    this.trigger('newmessage', model);
+  }
+
   async addKeyChange(keyChangedId: string): Promise<void> {
     window.log.info(
       'adding key change advisory for',

ts/models/messages.ts

@@ -201,6 +201,7 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
   isNormalBubble(): boolean {
     return (
       !this.isCallHistory() &&
+      !this.isChatSessionRefreshed() &&
       !this.isEndSession() &&
       !this.isExpirationTimerUpdate() &&
       !this.isGroupUpdate() &&
@@ -282,6 +283,12 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
         data: this.getPropsForProfileChange(),
       };
     }
+    if (this.isChatSessionRefreshed()) {
+      return {
+        type: 'chatSessionRefreshed',
+        data: null,
+      };
+    }
 
     return {
       type: 'message',
@@ -461,6 +468,10 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
     return this.get('type') === 'call-history';
   }
 
+  isChatSessionRefreshed(): boolean {
+    return this.get('type') === 'chat-session-refreshed';
+  }
+
   isProfileChange(): boolean {
     return this.get('type') === 'profile-change';
   }
@@ -1178,6 +1189,13 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
   }
 
   getNotificationData(): { emoji?: string; text: string } {
+    if (this.isChatSessionRefreshed()) {
+      return {
+        emoji: '🔁',
+        text: window.i18n('ChatRefresh--notification'),
+      };
+    }
+
     if (this.isUnsupportedMessage()) {
       return {
         text: window.i18n('message--getDescription--unsupported-message'),
@@ -1695,6 +1713,7 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
 
     // Rendered sync messages
     const isCallHistory = this.isCallHistory();
+    const isChatSessionRefreshed = this.isChatSessionRefreshed();
     const isGroupUpdate = this.isGroupUpdate();
     const isGroupV2Change = this.isGroupV2Change();
     const isEndSession = this.isEndSession();
@@ -1723,6 +1742,7 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
       isSticker ||
       // Rendered sync messages
       isCallHistory ||
+      isChatSessionRefreshed ||
       isGroupUpdate ||
       isGroupV2Change ||
       isEndSession ||