refactor(service-providers): check recording end status

packages/flat-i18n/locales/en.json

@@ -488,6 +488,7 @@
   "user-guide-button": "Check it out now",
   "start-recording": "Start recording",
   "stop-recording": "Stop recording",
+  "recording-end": "Recording ended",
   "recording": "Recording",
   "open-in-browser": "Open in Browser",
   "room-started": "Started: ",

packages/flat-i18n/locales/zh-CN.json

@@ -488,6 +488,7 @@
   "user-guide-button": "立即查看",
   "start-recording": "开始录制",
   "stop-recording": "停止录制",
+  "recording-end": "录制已停止",
   "recording": "录制",
   "open-in-browser": "请在浏览器中打开",
   "room-started": "已上课：",

packages/flat-services/src/services/recording/recording.ts

@@ -33,6 +33,9 @@ export abstract class IServiceRecording implements IService {
     /** Use with try-catch. */
     public abstract startRecording(): Promise<void>;
 
+    /** Refresh `isRecording` state. */
+    public abstract checkIsRecording(): Promise<void>;
+
     /** Use with try-catch. */
     public abstract stopRecording(): Promise<void>;
 

packages/flat-stores/src/classroom-store/index.ts

@@ -68,6 +68,9 @@ export class ClassroomStore {
     private readonly sideEffect = new SideEffectManager();
     private readonly rewardCooldown = new Map<string, number>();
 
+    // If it is `true`, the stop-recording is triggered by the user, do not show the message.
+    private recordingEndSentinel = false;
+
     public readonly roomUUID: string;
     public readonly ownerUUID: string;
     /** User uuid of the current user */
@@ -181,11 +184,12 @@ export class ClassroomStore {
             onDrop: this.onDrop,
         });
 
-        makeAutoObservable<this, "sideEffect" | "rewardCooldown">(this, {
+        makeAutoObservable<this, "sideEffect" | "rewardCooldown" | "recordingEndSentinel">(this, {
             rtc: observable.ref,
             rtm: observable.ref,
             sideEffect: false,
             rewardCooldown: false,
+            recordingEndSentinel: false,
             deviceStateStorage: false,
             classroomStorage: false,
             onStageUsersStorage: false,
@@ -206,6 +210,8 @@ export class ClassroomStore {
                 (isRecording: boolean) => {
                     if (isRecording) {
                         void message.success(FlatI18n.t("start-recording"));
+                    } else if (!this.recordingEndSentinel) {
+                        void message.info(FlatI18n.t("recording-end"));
                     }
                 },
             ),
@@ -777,6 +783,29 @@ export class ClassroomStore {
                         user.camera = false;
                     }
                 });
+                // When there's no active stream in the channel, the recording service
+                // stops automatically after `maxIdleTime`.
+                if (this.isRecording) {
+                    let hasStream = false;
+                    for (const userUUID in deviceStateStorage.state) {
+                        const deviceState = deviceStateStorage.state[userUUID];
+                        if (deviceState.camera || deviceState.mic) {
+                            hasStream = true;
+                            break;
+                        }
+                    }
+                    if (!hasStream) {
+                        this.sideEffect.setTimeout(
+                            () => {
+                                if (this.isRecording) {
+                                    this.recording.checkIsRecording().catch(console.warn);
+                                }
+                            },
+                            // Roughly 5 minutes later, see cloud-recording.ts.
+                            5 * 61 * 1000,
+                        );
+                    }
+                }
             }),
         );
 
@@ -1430,7 +1459,9 @@ export class ClassroomStore {
     }
 
     private async stopRecording(): Promise<void> {
+        this.recordingEndSentinel = true;
         await this.recording.stopRecording();
+        this.recordingEndSentinel = false;
     }
 
     private async initRTC(): Promise<void> {

service-providers/agora-cloud-recording/src/cloud-recording.ts

@@ -21,6 +21,7 @@ export type AgoraCloudRecordingRoomInfo = IServiceRecordingJoinRoomConfig;
 // TODO: We should save the recording state at the server side.
 export class AgoraCloudRecording extends IServiceRecording {
     private static readonly ReportingEndTimeKey = "reportingEndTime";
+    private static readonly LoopQueryKey = "loopQuery";
 
     private roomInfo: AgoraCloudRecordingRoomInfo | null;
     private recordingState: AgoraCloudRecordingState | null;
@@ -132,6 +133,7 @@ export class AgoraCloudRecording extends IServiceRecording {
         const { roomID } = this.roomInfo;
         const { resourceId, sid, mode } = this.recordingState;
 
+        this.sideEffect.flush(AgoraCloudRecording.LoopQueryKey);
         this.sideEffect.flush(AgoraCloudRecording.ReportingEndTimeKey);
         this.recordingState = null;
 
@@ -170,6 +172,10 @@ export class AgoraCloudRecording extends IServiceRecording {
         });
     }
 
+    public async checkIsRecording(): Promise<void> {
+        await this.queryRecordingStatus();
+    }
+
     private async queryRecordingStatus(joinRoom = false): Promise<void> {
         if (this.recordingState === null || this.roomID === null) {
             this.$Val.isRecording$.setValue(false);
@@ -212,12 +218,25 @@ export class AgoraCloudRecording extends IServiceRecording {
             10 * 1000,
             AgoraCloudRecording.ReportingEndTimeKey,
         );
+        // Loop query status in each 2 minutes.
+        // https://doc.shengwang.cn/doc/cloud-recording/restful/best-practices/integration#%E5%91%A8%E6%9C%9F%E6%80%A7%E9%A2%91%E9%81%93%E6%9F%A5%E8%AF%A2
+        this.sideEffect.setInterval(
+            () => {
+                if (this.isRecording) {
+                    this.queryRecordingStatus();
+                } else {
+                    this.sideEffect.flush(AgoraCloudRecording.LoopQueryKey);
+                }
+            },
+            120 * 1000,
+            AgoraCloudRecording.LoopQueryKey,
+        );
     }
 }
 
 /**
  * @see {@link https://docs.agora.io/en/cloud-recording/reference/rest-api/rest}
- * @see {@link https://docs.agora.io/cn/cloud-recording/cloud_recording_api_rest}
+ * @see {@link https://doc.shengwang.cn/doc/cloud-recording/restful/landing-page}
  */
 export type AgoraCloudRecordingMode = "individual" | "mix";