1/*
2 * Copyright (C) 2022 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import {FunctionUtils} from 'common/function_utils';
18import {
19  RemoteToolDownloadStart,
20  RemoteToolFilesReceived,
21  WinscopeEvent,
22  WinscopeEventType,
23} from 'messaging/winscope_event';
24import {
25  EmitEvent,
26  WinscopeEventEmitter,
27} from 'messaging/winscope_event_emitter';
28import {WinscopeEventListener} from 'messaging/winscope_event_listener';
29import {
30  MessageType,
31  OpenBuganizerResponse,
32  OpenRequest,
33  WebCommandMessage,
34} from './messages';
35
36export class AbtChromeExtensionProtocol
37  implements WinscopeEventEmitter, WinscopeEventListener
38{
39  static readonly ABT_EXTENSION_ID = 'mbbaofdfoekifkfpgehgffcpagbbjkmj';
40
41  private emitEvent: EmitEvent = FunctionUtils.DO_NOTHING_ASYNC;
42
43  setEmitEvent(callback: EmitEvent) {
44    this.emitEvent = callback;
45  }
46
47  async onWinscopeEvent(event: WinscopeEvent) {
48    await event.visit(WinscopeEventType.APP_INITIALIZED, async () => {
49      const urlParams = new URLSearchParams(window.location.search);
50      if (urlParams.get('source') !== 'openFromExtension' || !chrome) {
51        return;
52      }
53
54      await this.emitEvent(new RemoteToolDownloadStart());
55
56      const openRequestMessage: OpenRequest = {
57        action: MessageType.OPEN_REQUEST,
58      };
59
60      chrome.runtime.sendMessage(
61        AbtChromeExtensionProtocol.ABT_EXTENSION_ID,
62        openRequestMessage,
63        async (message) => await this.onMessageReceived(message),
64      );
65    });
66  }
67
68  private async onMessageReceived(message: WebCommandMessage) {
69    if (this.isOpenFromBuganizerResponseMessage(message)) {
70      await this.onOpenFromBuganizerResponseMessageReceived(message);
71    } else {
72      console.warn(
73        'ABT chrome extension protocol received unexpected message:',
74        message,
75      );
76    }
77  }
78
79  private async onOpenFromBuganizerResponseMessageReceived(
80    message: OpenBuganizerResponse,
81  ) {
82    console.log(
83      'ABT chrome extension protocol received OpenBuganizerResponse message:',
84      message,
85    );
86
87    if (message.attachments.length === 0) {
88      console.warn('ABT chrome extension protocol received no attachments');
89    }
90
91    const filesBlobPromises = message.attachments.map(async (attachment) => {
92      const fileQueryResponse = await fetch(attachment.objectUrl);
93      const blob = await fileQueryResponse.blob();
94
95      // Note: the received blob's media type is wrong. It is always set to "image/png".
96      // Context: http://google3/javascript/closure/html/safeurl.js?g=0&l=256&rcl=273756987
97      // Cloning the blob clears the media type.
98      const file = new File([blob], attachment.name);
99
100      return file;
101    });
102
103    const files = await Promise.all(filesBlobPromises);
104    await this.emitEvent(new RemoteToolFilesReceived(files));
105  }
106
107  private isOpenFromBuganizerResponseMessage(
108    message: WebCommandMessage,
109  ): message is OpenBuganizerResponse {
110    return message.action === MessageType.OPEN_BUGANIZER_RESPONSE;
111  }
112}
113