// Copyright 2019 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:async';

import 'package:cocoon_service/cocoon_service.dart';
import 'package:cocoon_service/src/service/flags/dynamic_config.dart';
import 'package:cocoon_service/src/service/github_service.dart';
import 'package:cocoon_service/src/service/luci_build_service/cipd_version.dart';
import 'package:github/github.dart' as gh;
import 'package:graphql/client.dart';

import 'service/fake_github_service.dart';

// ignore: must_be_immutable
// TODO(matanlurey): Make this *not* a mess. See https://github.com/flutter/flutter/issues/164646.
class FakeConfig implements Config {
  FakeConfig({
    this.githubClient,
    this.maxTaskRetriesValue,
    this.maxLuciTaskRetriesValue,
    this.maxFilesChangedForSkippingEnginePhaseValue,
    this.oauthClientIdValue,
    this.githubOAuthTokenValue,
    this.mergeConflictPullRequestMessageValue =
        'default mergeConflictPullRequestMessageValue',
    this.missingTestsPullRequestMessageValue =
        'default missingTestsPullRequestMessageValue',
    this.wrongBaseBranchPullRequestMessageValue,
    this.wrongHeadBranchPullRequestMessageValue,
    this.releaseBranchPullRequestMessageValue,
    this.webhookKeyValue,
    this.githubService,
    this.githubGraphQLClient,
    this.rollerAccountsValue,
    this.flutterBuildDescriptionValue,
    this.flutterGoldPendingValue,
    this.flutterGoldSuccessValue,
    this.flutterGoldChangesValue,
    this.flutterGoldAlertConstantValue,
    this.flutterGoldInitialAlertValue,
    this.flutterGoldFollowUpAlertValue,
    this.flutterGoldDraftChangeValue,
    this.flutterGoldStalePRValue,
    this.releaseBranchesValue,
    this.releaseCandidateBranchPathValue,
    this.postsubmitSupportedReposValue,
    this.supportedBranchesValue,
    this.supportedReposValue,
    this.batchSizeValue,
    this.backfillerTargetLimitValue,
    this.issueAndPRLimitValue,
    this.githubRequestDelayValue,
    DynamicConfig? dynamicConfig,
  }) : dynamicConfig =
           dynamicConfig ?? DynamicConfig.fromJson(<String, Object?>{});

  gh.GitHub? githubClient;
  GraphQLClient? githubGraphQLClient;
  GithubService? githubService;
  int? maxTaskRetriesValue;
  int? maxFilesChangedForSkippingEnginePhaseValue;
  int? maxLuciTaskRetriesValue;
  int? batchSizeValue;
  String? oauthClientIdValue;
  String? githubOAuthTokenValue;
  String mergeConflictPullRequestMessageValue;
  String missingTestsPullRequestMessageValue;
  String? wrongBaseBranchPullRequestMessageValue;
  String? wrongHeadBranchPullRequestMessageValue;
  String? releaseBranchPullRequestMessageValue;
  String? webhookKeyValue;
  String? flutterBuildDescriptionValue;
  List<String>? releaseBranchesValue;
  String? releaseCandidateBranchPathValue;
  Set<String>? rollerAccountsValue;
  int? backfillerTargetLimitValue;
  int? issueAndPRLimitValue;
  String? flutterGoldPendingValue;
  String? flutterGoldSuccessValue;
  String? flutterGoldChangesValue;
  String? flutterGoldAlertConstantValue;
  String? flutterGoldInitialAlertValue;
  String? flutterGoldFollowUpAlertValue;
  String? flutterGoldDraftChangeValue;
  String? flutterGoldStalePRValue;
  List<String>? supportedBranchesValue;
  Set<gh.RepositorySlug>? supportedReposValue;
  Set<gh.RepositorySlug>? postsubmitSupportedReposValue;
  Duration? githubRequestDelayValue;
  DynamicConfig dynamicConfig;

  @override
  Future<gh.GitHub> createGitHubClient({
    gh.PullRequest? pullRequest,
    gh.RepositorySlug? slug,
  }) async => githubClient!;

  @override
  gh.GitHub createGitHubClientWithToken(String token) => githubClient!;

  @override
  Future<GraphQLClient> createGitHubGraphQLClient() async =>
      githubGraphQLClient!;

  @override
  Future<GithubService> createGithubService(gh.RepositorySlug slug) async =>
      githubService ?? FakeGithubService();

  @override
  GithubService createGithubServiceWithToken(String token) => githubService!;

  @override
  Duration get githubRequestDelay => githubRequestDelayValue ?? Duration.zero;

  /// Size of the shards to send to buildBucket when scheduling builds.
  @override
  int get schedulingShardSize => 5;

  @override
  int get backfillerTargetLimit => backfillerTargetLimitValue ?? 50;

  @override
  int get issueAndPRLimit => issueAndPRLimitValue ?? 2;

  @override
  int get batchSize => batchSizeValue ?? 5;

  @override
  int get maxFilesChangedForSkippingEnginePhase =>
      maxFilesChangedForSkippingEnginePhaseValue!;

  @override
  int get maxLuciTaskRetries => maxLuciTaskRetriesValue!;

  @override
  String get flutterGoldPending => flutterGoldPendingValue!;

  @override
  String get flutterGoldSuccess => flutterGoldSuccessValue!;

  @override
  String get flutterGoldChanges => flutterGoldChangesValue!;

  @override
  String get flutterGoldDraftChange => flutterGoldDraftChangeValue!;

  @override
  String get flutterGoldStalePR => flutterGoldStalePRValue!;

  @override
  String flutterGoldInitialAlert(String url) => flutterGoldInitialAlertValue!;

  @override
  String flutterGoldFollowUpAlert(String url) => flutterGoldFollowUpAlertValue!;

  @override
  String flutterGoldAlertConstant(gh.RepositorySlug slug) =>
      flutterGoldAlertConstantValue!;

  @override
  String flutterGoldCommentID(gh.PullRequest pr) =>
      'PR ${pr.number}, at ${pr.head!.sha}';

  @override
  Future<String> get frobWebhookKey async => 'frob-webhook-key';

  @override
  int get commitNumber => 30;

  @override
  Future<String> get oauthClientId async => oauthClientIdValue!;

  @override
  Future<String> get githubOAuthToken async => githubOAuthTokenValue ?? 'token';

  @override
  String get mergeConflictPullRequestMessage =>
      mergeConflictPullRequestMessageValue;

  @override
  String get missingTestsPullRequestMessage =>
      missingTestsPullRequestMessageValue;

  @override
  String get wrongBaseBranchPullRequestMessage =>
      wrongBaseBranchPullRequestMessageValue!;

  @override
  String wrongHeadBranchPullRequestMessage(String branch) =>
      wrongHeadBranchPullRequestMessageValue!;

  @override
  String get releaseBranchPullRequestMessage =>
      releaseBranchPullRequestMessageValue!;

  @override
  Future<String> get webhookKey async => webhookKeyValue!;

  @override
  String get flutterTreeStatusRed =>
      flutterBuildDescriptionValue ??
      'Tree is currently broken. Please do not merge this '
          'PR unless it contains a fix for the tree.';
  @override
  String get flutterTreeStatusEmergency =>
      'The tree is currently broken; however, this PR is marked as `emergency` and will be allowed to merge.';

  @override
  Set<String> get rollerAccounts => rollerAccountsValue!;

  @override
  Future<String> generateGithubToken(gh.RepositorySlug slug) {
    throw UnimplementedError();
  }

  @override
  Future<String> get githubAppId => throw UnimplementedError();

  @override
  Future<Map<String, dynamic>> get githubAppInstallations =>
      throw UnimplementedError();

  @override
  Future<String> get githubPrivateKey => throw UnimplementedError();

  @override
  Future<String> get githubPublicKey => throw UnimplementedError();

  @override
  Future<GithubService> createDefaultGitHubService() async => githubService!;

  @override
  CipdVersion get defaultRecipeBundleRef => const CipdVersion(branch: 'main');

  @override
  List<String> get releaseBranches => releaseBranchesValue!;

  @override
  String get releaseCandidateBranchPath => releaseCandidateBranchPathValue!;

  @override
  Future<List<String>> get releaseAccounts async => <String>[
    'dart-flutter-releaser',
  ];

  @override
  Set<gh.RepositorySlug> get supportedRepos =>
      supportedReposValue ??
      <gh.RepositorySlug>{
        Config.flutterSlug,
        Config.cocoonSlug,
        Config.packagesSlug,
      };

  @override
  Set<gh.RepositorySlug> get postsubmitSupportedRepos =>
      postsubmitSupportedReposValue ?? <gh.RepositorySlug>{Config.packagesSlug};

  @override
  String get autosubmitBot => 'auto-submit[bot]';

  static const String revertOfLabel = 'revert of';

  @override
  Future<String> get discordTreeStatusWebhookUrl async =>
      'https://discord.com/api/webhooks/1234/abcd';

  @override
  // TODO: implement flags
  DynamicConfig get flags => dynamicConfig;
}