import 'dart:io';

import 'package:swagger_generator_flutter/core/template_renderer.dart';
import 'package:test/test.dart';

void main() {
  group('TemplateRenderer', () {
    late TemplateRenderer renderer;

    setUp(() {
      renderer = TemplateRenderer();
    });

    test('renders file header template', () {
      final result = renderer.render('common/file_header', {
        'description': 'Test API',
        'apiUrl': 'https://api.example.com',
      });

      expect(result, contains('Test API'));
      expect(result, contains('https://api.example.com'));
      expect(result, contains('xy_swagger_generator'));
    });

    test('renders imports template', () {
      final result = renderer.render('common/imports', {
        'imports': [
          'package:dio/dio.dart',
          'package:retrofit/retrofit.dart',
        ],
      });

      expect(result, contains("import 'package:dio/dio.dart';"));
      expect(result, contains("import 'package:retrofit/retrofit.dart';"));
    });

    test('renders API class template', () {
      final result = renderer.render('api/api_class', {
        'description': 'User API',
        'imports': ['package:dio/dio.dart'],
        'className': 'UserApi',
        'hasRestApi': true,
        'baseUrl': 'https://api.example.com',
        'hasRetrofit': true,
        'docLines': ['User API 接口', '管理用户相关操作'],
        'methods': [
          {
            'methodName': 'getUser',
            'returnType': 'BaseResult<User>',
            'docLines': ['获取用户信息'],
            'annotations': ["@GET('/users/{id}')"],
            'params': [
              {'annotation': "@Path('id')", 'type': 'String', 'name': 'id'},
            ],
          },
        ],
      });

      expect(result, contains('abstract class UserApi'));
      expect(result, contains('@RestApi'));
      expect(result, contains('factory UserApi'));
      expect(result, contains('Future<BaseResult<User>> getUser'));
      expect(result, contains("@GET('/users/{id}')"));
    });

    test('renders freezed model template', () {
      final result = renderer.render('models/freezed_model', {
        'description': 'User Model',
        'className': 'User',
        'partFile': 'user',
        'docLines': ['用户模型'],
        'properties': [
          {
            'name': 'id',
            'type': 'String',
            'required': true,
          },
          {
            'name': 'name',
            'type': 'String',
            'required': true,
          },
          {
            'name': 'email',
            'type': 'String',
            'nullable': true,
          },
        ],
      });

      expect(result, contains('class User'));
      expect(result, contains('@freezed'));
      expect(result, contains('required String id'));
      expect(result, contains('required String name'));
      expect(result, contains('String? email'));
    });

    test('renders enum model template', () {
      final result = renderer.render('models/enum_model', {
        'description': 'User Status',
        'className': 'UserStatus',
        'docLines': ['用户状态枚举'],
        'valueType': 'String',
        'values': [
          {'name': 'active', 'value': "'active'"},
          {'name': 'inactive', 'value': "'inactive'"},
        ],
      });

      expect(result, contains('enum UserStatus'));
      expect(result, contains('@JsonEnum()'));
      expect(result, contains('active'));
      expect(result, contains('inactive'));
    });

    test('prefers file template over embedded templates', () async {
      final tempDir = await Directory.systemTemp.createTemp('tmpl_test');
      final customHeader = File(
        '${tempDir.path}/common/file_header.mustache',
      );
      await customHeader.create(recursive: true);
      await customHeader.writeAsString('// from file {{description}}');

      final fileRenderer = TemplateRenderer(templateRoot: tempDir.path);
      final result = fileRenderer.render('common/file_header', {
        'description': 'Custom',
        'apiUrl': 'https://api.example.com',
      });

      expect(result, contains('from file Custom'));

      await tempDir.delete(recursive: true);
    });
  });
}