// 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:appengine/appengine.dart';
import 'package:cocoon_service/src/model/appengine/branch.dart';
import 'package:cocoon_service/src/model/appengine/key_helper.dart';
import 'package:cocoon_service/src/model/appengine/service_account_info.dart';
import 'package:cocoon_service/src/service/bigquery.dart';
import 'package:cocoon_service/src/service/config.dart';
import 'package:cocoon_service/src/service/github_service.dart';
import 'package:github/github.dart' as gh;
import 'package:googleapis/bigquery/v2.dart';
import 'package:graphql/client.dart';

import '../request_handling/fake_authentication.dart';
import 'fake_datastore.dart';

// ignore: must_be_immutable
class FakeConfig implements Config {
  FakeConfig({
    this.githubClient,
    this.deviceLabServiceAccountValue,
    this.maxTaskRetriesValue,
    this.maxLuciTaskRetriesValue,
    this.keyHelperValue,
    this.oauthClientIdValue,
    this.githubOAuthTokenValue,
    this.mergeConflictPullRequestMessageValue = 'default mergeConflictPullRequestMessageValue',
    this.missingTestsPullRequestMessageValue = 'default missingTestsPullRequestMessageValue',
    this.wrongBaseBranchPullRequestMessageValue,
    this.wrongHeadBranchPullRequestMessageValue,
    this.releaseBranchPullRequestMessageValue,
    this.webhookKeyValue,
    this.loggingServiceValue,
    this.tabledataResource,
    this.githubService,
    this.bigqueryService,
    this.githubGraphQLClient,
    this.cirrusGraphQLClient,
    this.rollerAccountsValue,
    this.flutterBuildValue,
    this.flutterBuildDescriptionValue,
    this.maxRecordsValue,
    this.flutterGoldPendingValue,
    this.flutterGoldSuccessValue,
    this.flutterGoldChangesValue,
    this.flutterGoldAlertConstantValue,
    this.flutterGoldInitialAlertValue,
    this.flutterGoldFollowUpAlertValue,
    this.flutterGoldDraftChangeValue,
    this.flutterGoldStalePRValue,
    this.postsubmitSupportedReposValue,
    this.supportedBranchesValue,
    this.supportedReposValue,
    this.batchSizeValue,
    this.githubRequestDelayValue,
    FakeDatastoreDB? dbValue,
  }) : dbValue = dbValue ?? FakeDatastoreDB();

  gh.GitHub? githubClient;
  GraphQLClient? githubGraphQLClient;
  GraphQLClient? cirrusGraphQLClient;
  TabledataResource? tabledataResource;
  BigqueryService? bigqueryService;
  GithubService? githubService;
  FakeDatastoreDB dbValue;
  ServiceAccountInfo? deviceLabServiceAccountValue;
  int? maxTaskRetriesValue;
  int? maxLuciTaskRetriesValue;
  int? batchSizeValue;
  FakeKeyHelper? keyHelperValue;
  String? oauthClientIdValue;
  String? githubOAuthTokenValue;
  String mergeConflictPullRequestMessageValue;
  String missingTestsPullRequestMessageValue;
  String? wrongBaseBranchPullRequestMessageValue;
  String? wrongHeadBranchPullRequestMessageValue;
  String? releaseBranchPullRequestMessageValue;
  String? webhookKeyValue;
  String? flutterBuildValue;
  String? flutterBuildDescriptionValue;
  Logging? loggingServiceValue;
  String? waitingForTreeToGoGreenLabelNameValue;
  Set<String>? rollerAccountsValue;
  int? maxRecordsValue;
  String? flutterGoldPendingValue;
  String? flutterGoldSuccessValue;
  String? flutterGoldChangesValue;
  String? flutterGoldAlertConstantValue;
  String? flutterGoldInitialAlertValue;
  String? flutterGoldFollowUpAlertValue;
  String? flutterGoldDraftChangeValue;
  String? flutterGoldStalePRValue;
  List<String>? supportedBranchesValue;
  String? overrideTreeStatusLabelValue;
  Set<gh.RepositorySlug>? supportedReposValue;
  Set<gh.RepositorySlug>? postsubmitSupportedReposValue;
  Duration? githubRequestDelayValue;

  @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<GraphQLClient> createCirrusGraphQLClient() async => cirrusGraphQLClient!;

  @override
  Future<TabledataResource> createTabledataResourceApi() async => tabledataResource!;

  @override
  Future<BigqueryService> createBigQueryService() async => bigqueryService!;

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

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

  @override
  FakeDatastoreDB get db => dbValue;

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

  @override
  int get maxTaskRetries => maxTaskRetriesValue!;

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

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

  @override
  int get maxLuciTaskRetries => maxLuciTaskRetriesValue!;

  @override
  int get maxRecords => maxRecordsValue!;

  @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
  int get commitNumber => 30;

  @override
  KeyHelper get keyHelper => keyHelperValue!;

  @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 flutterBuild => flutterBuildValue!;

  @override
  String get flutterBuildDescription =>
      flutterBuildDescriptionValue ??
      'Tree is currently broken. Please do not merge this '
          'PR unless it contains a fix for the tree.';

  @override
  Logging get loggingService => loggingServiceValue!;

  @override
  String get waitingForTreeToGoGreenLabelName => waitingForTreeToGoGreenLabelNameValue!;

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

  @override
  bool githubPresubmitSupportedRepo(gh.RepositorySlug slug) {
    return <gh.RepositorySlug>[
      Config.flutterSlug,
      Config.engineSlug,
      Config.cocoonSlug,
      Config.packagesSlug,
      Config.pluginsSlug,
    ].contains(slug);
  }

  @override
  bool githubPostsubmitSupportedRepo(gh.RepositorySlug slug) {
    return postsubmitSupportedRepos.contains(slug);
  }

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

  @override
  Future<String> generateJsonWebToken() {
    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
  Future<String> get overrideTreeStatusLabel async => overrideTreeStatusLabelValue!;

  @override
  String get defaultRecipeBundleRef => 'refs/heads/main';

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

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

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

  @override
  Future<Iterable<Branch>> getBranches(gh.RepositorySlug slug) async {
    if (supportedBranchesValue == null) {
      throw Exception('Test must set suportedBranchesValue to be able to use Config.getBranches');
    }
    return supportedBranchesValue!.map(
      (String branch) => Branch(
        key: db.emptyKey.append<String>(
          Branch,
          id: '${slug.fullName}/$branch',
        ),
      ),
    );
  }
}