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('multipart generation', () {
    test('按 preset 生成 Retrofit multipart 参数', () async {
      final tempDir = await Directory.systemTemp.createTemp(
        'koi_swagger_parser_multipart_',
      );
      addTearDown(() => tempDir.delete(recursive: true));

      final specFile = File(p.join(tempDir.path, 'openapi.json'));
      await specFile.writeAsString(r'''
{
  "openapi": "3.1.0",
  "info": {
    "title": "Multipart Sample",
    "version": "1.0.0"
  },
  "paths": {
    "/api/v1/uploads": {
      "post": {
        "tags": ["uploads"],
        "operationId": "create_upload_api_v1_uploads_post",
        "requestBody": {
          "required": true,
          "content": {
            "multipart/form-data": {
              "schema": {
                "type": "object",
                "required": ["file", "meta"],
                "properties": {
                  "file": {"type": "string", "format": "binary"},
                  "files": {
                    "type": "array",
                    "items": {"type": "string", "format": "binary"}
                  },
                  "meta": {"$ref": "#/components/schemas/UploadMeta"},
                  "note": {"type": "string"}
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "ok",
            "content": {
              "application/json": {
                "schema": {"$ref": "#/components/schemas/UploadResponse"}
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "UploadMeta": {
        "type": "object",
        "required": ["album_id"],
        "properties": {
          "album_id": {"type": "integer"},
          "tags": {
            "type": "array",
            "items": {"type": "string"}
          }
        }
      },
      "UploadResponse": {
        "type": "object",
        "required": ["id"],
        "properties": {
          "id": {"type": "integer"}
        }
      }
    }
  }
}
''');

      final outputDir = p.join(tempDir.path, 'lib', 'src');
      final configFile = File(p.join(tempDir.path, 'koi_swagger_parser.yaml'));
      await configFile.writeAsString('''
input:
  swagger_urls:
    - url: ${specFile.path}
      enabled: true

output:
  base_dir: $outputDir
  api_dir: ${p.join(outputDir, 'api')}
  models_dir: ${p.join(outputDir, 'api_models')}
  split_by_tags: true

generation:
  preset:
    name: koi_flutter
  api:
    enabled: true
    use_retrofit: true
    cancel_token_support: false
    client:
      class_name: SampleApiClient
      file_name: sample_api_client
    response_wrapper:
      mode: passthrough
      detect_standard_envelope: false
      success_data_field: data
  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
''');

      await const KoiSwaggerParser().generate(configPath: configFile.path);

      final apiFile = File(
        p.join(outputDir, 'api', 'v1', 'uploads_api.dart'),
      ).readAsStringSync();
      expect(apiFile, contains('@MultiPart()'));
      expect(
        apiFile,
        contains("@Part(name: 'file') required MultipartFile file"),
      );
      expect(
        apiFile,
        contains("@Part(name: 'files') List<MultipartFile>? files"),
      );
      expect(
        apiFile,
        contains(
          "@Part(name: 'meta', contentType: 'application/json') required KoiUploadMeta meta",
        ),
      );
      expect(apiFile, contains("@Part(name: 'note') String? note"));

      final metaFile = File(
        p.join(outputDir, 'api_models', 'request', 'upload_meta.dart'),
      ).readAsStringSync();
      expect(metaFile, contains('class KoiUploadMeta'));
      expect(metaFile, contains("@JsonKey(name: 'album_id',"));
    });
  });

  group('discriminator union generation', () {
    test('生成 sealed wrapper 并在结果模型中引用', () async {
      final tempDir = await Directory.systemTemp.createTemp(
        'koi_swagger_parser_union_',
      );
      addTearDown(() => tempDir.delete(recursive: true));

      final specFile = File(p.join(tempDir.path, 'openapi.json'));
      await specFile.writeAsString(r'''
{
  "openapi": "3.1.0",
  "info": {
    "title": "Union Sample",
    "version": "1.0.0"
  },
  "paths": {
    "/api/v1/pets/{pet_id}": {
      "get": {
        "tags": ["pets"],
        "operationId": "get_pet_api_v1_pets__pet_id__get",
        "parameters": [
          {
            "name": "pet_id",
            "in": "path",
            "required": true,
            "schema": {"type": "integer"}
          }
        ],
        "responses": {
          "200": {
            "description": "ok",
            "content": {
              "application/json": {
                "schema": {"$ref": "#/components/schemas/PetResponse"}
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "PetResponse": {
        "type": "object",
        "required": ["pet"],
        "properties": {
          "pet": {"$ref": "#/components/schemas/Pet"}
        }
      },
      "Pet": {
        "oneOf": [
          {"$ref": "#/components/schemas/Cat"},
          {"$ref": "#/components/schemas/Dog"}
        ],
        "discriminator": {
          "propertyName": "pet_type",
          "mapping": {
            "cat": "#/components/schemas/Cat",
            "dog": "#/components/schemas/Dog"
          }
        }
      },
      "Cat": {
        "type": "object",
        "required": ["pet_type", "lives"],
        "properties": {
          "pet_type": {"type": "string", "enum": ["cat"]},
          "lives": {"type": "integer"}
        }
      },
      "Dog": {
        "type": "object",
        "required": ["pet_type", "breed"],
        "properties": {
          "pet_type": {"type": "string", "enum": ["dog"]},
          "breed": {"type": "string"}
        }
      }
    }
  }
}
''');

      final outputDir = p.join(tempDir.path, 'lib', 'src');
      final configFile = File(p.join(tempDir.path, 'koi_swagger_parser.yaml'));
      await configFile.writeAsString('''
input:
  swagger_urls:
    - url: ${specFile.path}
      enabled: true

output:
  base_dir: $outputDir
  api_dir: ${p.join(outputDir, 'api')}
  models_dir: ${p.join(outputDir, 'api_models')}
  split_by_tags: true

generation:
  api:
    enabled: true
    use_retrofit: true
    cancel_token_support: false
    client:
      class_name: SampleApiClient
      file_name: sample_api_client
    response_wrapper:
      mode: passthrough
      detect_standard_envelope: false
      success_data_field: data
  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
''');

      await const KoiSwaggerParser().generate(configPath: configFile.path);

      final unionFile = File(
        p.join(outputDir, 'api_models', 'result', 'pet.dart'),
      ).readAsStringSync();
      expect(unionFile, contains('sealed class KoiPet'));
      expect(
        unionFile,
        contains('factory KoiPet.fromJson(Map<String, dynamic> json)'),
      );
      expect(unionFile, contains("case 'cat':"));
      expect(unionFile, contains('return KoiPetCat(KoiCat.fromJson(json));'));
      expect(unionFile, contains('final class KoiPetDog extends KoiPet'));

      final responseFile = File(
        p.join(outputDir, 'api_models', 'result', 'pet_response.dart'),
      ).readAsStringSync();
      expect(responseFile, contains('required KoiPet pet'));
    });
  });
}