import { TestBed } from '@angular/core/testing';
import { provideHttpClient } from '@angular/common/http';
import { provideHttpClientTesting, HttpTestingController } from '@angular/common/http/testing';
import { ConfigMetaService } from './config-meta.service';
import { ConfigService } from 'base-core';

// Mock ConfigService
class MockConfigService {
  apiBaseUrl = 'http://localhost:8080';
  useMockData = true; // 使用模拟数据以便测试
}

describe('ConfigMetaService', () => {
  let service: ConfigMetaService;
  let httpTestingController: HttpTestingController;
  let mockConfigService: MockConfigService;

  beforeEach(() => {
    mockConfigService = new MockConfigService();
    
    TestBed.configureTestingModule({
      providers: [
        provideHttpClient(),
        provideHttpClientTesting(),
        ConfigMetaService,
        { provide: ConfigService, useValue: mockConfigService }
      ]
    });
    
    service = TestBed.inject(ConfigMetaService);
    httpTestingController = TestBed.inject(HttpTestingController);
  });

  afterEach(() => {
    httpTestingController.verify();
  });

  it('should be created', () => {
    expect(service).toBeTruthy();
  });

  describe('getListUrl', () => {
    it('should return correct URL when useMockData is true', () => {
      mockConfigService.useMockData = true;
      expect(service.getListUrl()).toBe('http://localhost:8080/tabulator/config/meta/list');
    });

    it('should return correct URL when useMockData is false', () => {
      mockConfigService.useMockData = false;
      expect(service.getListUrl()).toBe('http://localhost:8080/tabulator/config/meta/list');
    });
  });

  describe('listConfigMeta', () => {
    it('should return mock data when useMockData is true', (done) => {
      mockConfigService.useMockData = true;
      
      service.listConfigMeta().subscribe({
        next: (data) => {
          expect(data).toBeTruthy();
          expect(Array.isArray(data)).toBeTrue();
          // 模拟数据应该包含一些记录
          expect(data.length).toBeGreaterThan(0);
          done();
        },
        error: done.fail
      });
    });

    it('should make HTTP request when useMockData is false', () => {
      mockConfigService.useMockData = false;
      const mockResponse = {
        success: true,
        data: [
          { 
            id: '1', 
            configName: 'test', 
            fieldName: 'testField', 
            fieldType: 'string', 
            yamlName: 'testYaml',
            fieldDesc: 'test description',
            creator: 'admin',
            createdAt: '2024-01-01T00:00:00Z'
          }
        ]
      };

      service.listConfigMeta().subscribe(response => {
        expect(response).toEqual(mockResponse.data);
      });

      const req = httpTestingController.expectOne('http://localhost:8080/tabulator/config/meta/list');
      expect(req.request.method).toBe('POST');
      req.flush(mockResponse);
    });
  });

  describe('listForTabulator', () => {
    it('should convert Tabulator params and return expected format', (done) => {
      mockConfigService.useMockData = true;
      const tabulatorParams = {
        page: 1,
        size: 20,
        sort: [{ field: 'configName', dir: 'asc' }],
        filter: [{ field: 'fieldType', type: '=', value: 'string' }]
      };

      service.listForTabulator(tabulatorParams).subscribe({
        next: (response) => {
          expect(response).toBeTruthy();
          expect(response.last_page).toBeDefined();
          expect(response.data).toBeDefined();
          expect(Array.isArray(response.data)).toBeTrue();
          done();
        },
        error: done.fail
      });
    });

    it('should handle empty params', (done) => {
      mockConfigService.useMockData = true;
      const emptyParams = {};

      service.listForTabulator(emptyParams).subscribe({
        next: (response) => {
          expect(response).toBeTruthy();
          expect(response.last_page).toBeDefined();
          expect(response.data).toBeDefined();
          expect(Array.isArray(response.data)).toBeTrue();
          done();
        },
        error: done.fail
      });
    });
  });

  describe('initConfigMeta', () => {
    it('should return mock success when useMockData is true', (done) => {
      mockConfigService.useMockData = true;
      
      service.initConfigMeta().subscribe({
        next: (result) => {
          expect(result).toBeTruthy();
          expect(result.success).toBeTrue();
          expect(result.data).toBe('模拟初始化成功');
          done();
        },
        error: done.fail
      });
    });

    it('should make HTTP POST request when useMockData is false', () => {
      mockConfigService.useMockData = false;
      const mockResponse = { success: true, data: '初始化成功' };

      service.initConfigMeta().subscribe(response => {
        expect(response).toEqual(mockResponse);
      });

      const req = httpTestingController.expectOne('http://localhost:8080/init/config/meta');
      expect(req.request.method).toBe('POST');
      req.flush(mockResponse);
    });
  });
});