apps.json移动到服务端

app/apps.service.ts

@@ -57,7 +57,7 @@ export class AppsService {
                 private downloadService: DownloadService, private ngZone: NgZone) {
     }
 
-    get lastVisted(): App|undefined {
+    get lastVisited(): App|undefined {
         let id = localStorage.getItem("last_visited");
         if (id) {
             return this.apps.get(id);
@@ -65,16 +65,26 @@ export class AppsService {
         return undefined;
     }
 
-    set lastVisted(app: App|undefined) {
+    set lastVisited(app: App|undefined) {
         if (app) {
             localStorage.setItem("last_visited", app.id);
         }
     }
 
     async loadApps() {
-        let data = await
-            this.http.get('./apps.json').map((response) => response.json()).toPromise();
+        let appsURL = 'https://wudizhanche.mycard.moe/downloads/apps.json';
+        try {
+            let data = await this.http.get(appsURL).map((response) => response.json()).toPromise();
+            localStorage.setItem("apps_json", appsURL);
+            this.apps = this.loadAppsList(data);
+        } catch (e) {
+            let data = localStorage.getItem("apps_json");
+            if (data) {
                 this.apps = this.loadAppsList(data);
+            } else {
+                this.apps = new Map();
+            }
+        }
         return this.apps;
     }
 

app/lobby.component.ts

@@ -30,10 +30,8 @@ export class LobbyComponent implements OnInit {
 
     async ngOnInit() {
         this.apps = await this.appsService.loadApps();
-        for (let app of this.apps.values()) {
-            this.appsService.update(app);
-        }
-        this.chooseApp(this.appsService.lastVisted || this.apps.get("ygopro")!);
+        if (this.apps.size > 0) {
+            this.chooseApp(this.appsService.lastVisited || this.apps.get("ygopro")!);
 
             // 初始化聊天室
             let url = new URL('candy/index.html', location.href);
@@ -53,11 +51,21 @@ export class LobbyComponent implements OnInit {
             }
             this.candy_url = url;
             await this.appsService.migrate();
+            for (let app of this.apps.values()) {
+                await  this.appsService.update(app);
+            }
+        } else {
+            if (confirm("获取程序列表失败,是否重试?")) {
+                location.reload();
+            } else {
+                window.close();
+            }
+        }
     }
 
     chooseApp(app: App) {
         this.currentApp = app;
-        this.appsService.lastVisted = app;
+        this.appsService.lastVisited = app;
         if (this.candy && this.currentApp.conference) {
             (<WebViewElement>this.candy.nativeElement).send('join', this.currentApp.conference + '@conference.mycard.moe');
         }