Backup Server APIs

Co-authored-by: Fedor Indutny <79877362+indutny-signal@users.noreply.github.com>

ts/services/backups/api.ts

@@ -0,0 +1,72 @@
+// Copyright 2024 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { strictAssert } from '../../util/assert';
+import type {
+  WebAPIType,
+  GetBackupInfoResponseType,
+  GetBackupUploadFormResponseType,
+  BackupMediaItemType,
+  BackupMediaBatchResponseType,
+  BackupListMediaResponseType,
+} from '../../textsecure/WebAPI';
+import type { BackupCredentials } from './credentials';
+
+export class BackupAPI {
+  constructor(private credentials: BackupCredentials) {}
+
+  public async refresh(): Promise<void> {
+    // TODO: DESKTOP-6979
+    await this.server.refreshBackup(
+      await this.credentials.getHeadersForToday()
+    );
+  }
+
+  public async getInfo(): Promise<GetBackupInfoResponseType> {
+    return this.server.getBackupInfo(
+      await this.credentials.getHeadersForToday()
+    );
+  }
+
+  public async getUploadForm(): Promise<GetBackupUploadFormResponseType> {
+    return this.server.getBackupUploadForm(
+      await this.credentials.getHeadersForToday()
+    );
+  }
+
+  public async getMediaUploadForm(): Promise<GetBackupUploadFormResponseType> {
+    return this.server.getBackupMediaUploadForm(
+      await this.credentials.getHeadersForToday()
+    );
+  }
+
+  public async backupMediaBatch(
+    items: ReadonlyArray<BackupMediaItemType>
+  ): Promise<BackupMediaBatchResponseType> {
+    return this.server.backupMediaBatch({
+      headers: await this.credentials.getHeadersForToday(),
+      items,
+    });
+  }
+
+  public async listMedia({
+    cursor,
+    limit,
+  }: {
+    cursor?: string;
+    limit: number;
+  }): Promise<BackupListMediaResponseType> {
+    return this.server.backupListMedia({
+      headers: await this.credentials.getHeadersForToday(),
+      cursor,
+      limit,
+    });
+  }
+
+  private get server(): WebAPIType {
+    const { server } = window.textsecure;
+    strictAssert(server, 'server not available');
+
+    return server;
+  }
+}