import 'dart:io';

import 'package:koi_swagger_parser/koi_swagger_parser.dart';
import 'package:path/path.dart' as p;
import 'package:test/test.dart';

void main() {
  group('KoiSwaggerConfigLoader', () {
    test('兼容旧版 generator_config.yaml 字段', () async {
      final tempDir = await Directory.systemTemp.createTemp(
        'koi_swagger_parser_config_',
      );
      addTearDown(() => tempDir.delete(recursive: true));

      final configFile = File(p.join(tempDir.path, 'generator_config.yaml'));
      await configFile.writeAsString('''
input:
  swagger_urls:
    - url: ./openapi.json
      enabled: true

output:
  base_dir: ./lib/src
  api_dir: ./lib/src/api
  models_dir: ./lib/src/api_models
  included_tags:
    - stores

generation:
  api:
    enabled: true
    use_retrofit: true
    cancel_token_support: true
    base_result_import: package:dba_network/dba_network.dart
    client:
      class_name: DbaApiClient
      file_name: dba_api_client
  models:
    enabled: true
    class_prefix: Koi
    default_non_nullable_list_to_empty: true
    json_serializable:
      checked: true
      explicit_to_json: true
      include_if_null: false
formatting:
  run_dart_format: false
''');

      final config = await KoiSwaggerConfig.load(
        workingDirectory: tempDir.path,
      );

      expect(config.input.swaggerUrls, <String>[
        p.join(tempDir.path, 'openapi.json'),
      ]);
      expect(config.output.includedTags, <String>['stores']);
      expect(
        config.generation.api.responseWrapper.mode,
        ResponseWrapperMode.externalGeneric,
      );
      expect(
        config.generation.api.responseWrapper.externalImport,
        'package:dba_network/dba_network.dart',
      );
      expect(
        config.generation.api.responseWrapper.externalClassName,
        'BaseResult',
      );
      expect(config.generation.api.cancelTokenSupport, isTrue);
      expect(config.generation.preset.name, 'koi_flutter');
      expect(config.generation.models.classPrefix, 'Koi');
      expect(config.generation.formatting.runDartFormat, isFalse);
    });

    test('解析生命周期、过滤与 build_runner 配置', () async {
      final tempDir = await Directory.systemTemp.createTemp(
        'koi_swagger_parser_config_lifecycle_',
      );
      addTearDown(() => tempDir.delete(recursive: true));
      await File(p.join(tempDir.path, 'koi_swagger_parser.yaml')).writeAsString(
        '''
input:
  swagger_urls:
    - ./openapi.json
output:
  included_paths:
    - /api/**
  excluded_operations:
    - regex:^DELETE\\s
  included_models:
    - '*Response'
  clean_stale_files: false
  skip_if_unchanged: false
  manifest_path: ./.generated/koi.json
generation:
  api:
    enabled: true
  models:
    enabled: true
formatting:
  run_dart_format: false
  run_build_runner: true
  build_runner_mode: watch
  delete_conflicting_outputs: false
''',
      );

      final config = await KoiSwaggerConfig.load(
        workingDirectory: tempDir.path,
      );

      expect(config.output.includedPaths, <String>['/api/**']);
      expect(config.output.excludedOperations, <String>[r'regex:^DELETE\s']);
      expect(config.output.includedModels, <String>['*Response']);
      expect(config.output.cleanStaleFiles, isFalse);
      expect(config.output.skipIfUnchanged, isFalse);
      expect(
        config.output.manifestPath,
        p.join(tempDir.path, '.generated', 'koi.json'),
      );
      expect(config.generation.formatting.runBuildRunner, isTrue);
      expect(
        config.generation.formatting.buildRunnerMode,
        BuildRunnerMode.watch,
      );
      expect(config.generation.formatting.deleteConflictingOutputs, isFalse);
    });

    test('错误标量类型和无效 regex 产生结构化诊断', () async {
      final tempDir = await Directory.systemTemp.createTemp(
        'koi_swagger_parser_config_invalid_',
      );
      addTearDown(() => tempDir.delete(recursive: true));
      final configFile = File(p.join(tempDir.path, 'koi_swagger_parser.yaml'));
      await configFile.writeAsString('''
input:
  swagger_urls:
    - url: ./openapi.json
      enabled: yes
output:
  split_by_tags: wrong
  included_paths:
    - regex:[
generation:
  api:
    enabled: true
  models:
    enabled: true
''');

      await expectLater(
        KoiSwaggerConfig.load(workingDirectory: tempDir.path),
        throwsA(
          isA<KoiDiagnosticException>().having(
            (error) => error.diagnostics.map((item) => item.code),
            'diagnostic codes',
            containsAll(<String>[
              'config.invalid_boolean',
              'config.invalid_filter_regex',
            ]),
          ),
        ),
      );
    });

    test('API enabled 时明确拒绝未实现的非 Retrofit renderer', () async {
      final tempDir = await Directory.systemTemp.createTemp(
        'koi_swagger_parser_config_renderer_',
      );
      addTearDown(() => tempDir.delete(recursive: true));
      await File(p.join(tempDir.path, 'koi_swagger_parser.yaml')).writeAsString(
        '''
input:
  swagger_urls:
    - ./openapi.json
generation:
  api:
    enabled: true
    use_retrofit: false
  models:
    enabled: true
''',
      );

      await expectLater(
        KoiSwaggerConfig.load(workingDirectory: tempDir.path),
        throwsA(
          isA<KoiDiagnosticException>().having(
            (error) => error.diagnostics.map((item) => item.code),
            'diagnostic codes',
            contains('config.unsupported_api_renderer'),
          ),
        ),
      );
    });
  });
}