/** @type {import('jest').Config} */
const config = {
  preset: 'ts-jest',
  testEnvironment: 'node',

  // 测试文件匹配模式
  testMatch: [
    '**/__tests__/**/*.test.[jt]s?(x)',
    '**/?(*.)+(spec|test).[jt]s?(x)'
  ],

  // 模块名称映射
  moduleNameMapping: {
    '^@/(.*)$': '<rootDir>/src/$1',
    '^@/client/(.*)$': '<rootDir>/src/client/$1',
    '^@/server/(.*)$': '<rootDir>/src/server/$1',
    '^@/shared/(.*)$': '<rootDir>/src/shared/$1',
    '^@/test/(.*)$': '<rootDir>/test/$1'
  },

  // 覆盖率配置
  collectCoverageFrom: [
    'src/**/*.{js,jsx,ts,tsx}',
    '!src/**/*.d.ts',
    '!src/client/api.ts',
    '!src/**/__tests__/**',
    '!src/**/__mocks__/**',
    '!src/**/index.ts',
    '!src/**/types.ts'
  ],

  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
  coverageThreshold: {
    global: {
      branches: 70,
      functions: 70,
      lines: 70,
      statements: 70
    }
  },

  // 测试超时
  testTimeout: 10000,

  // 测试环境设置
  setupFilesAfterEnv: ['<rootDir>/src/test/setup.ts'],

  // 变换配置
  transform: {
    '^.+\.[tj]sx?$': ['ts-jest', {
      tsconfig: 'tsconfig.json',
      useESM: true,
    }],
  },

  // 模块文件扩展名
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],

  // 测试路径忽略模式
  testPathIgnorePatterns: [
    '/node_modules/',
    '/dist/',
    '/build/',
    '/coverage/'
  ],

  // 监听模式配置
  watchPathIgnorePatterns: [
    '/node_modules/',
    '/dist/',
    '/build/',
    '/coverage/'
  ],

  // 测试运行器显示配置
  verbose: true,
  notify: false,

  // CI环境配置
  maxWorkers: process.env.CI ? 2 : '50%',

  // 全局变量
  globals: {
    'ts-jest': {
      isolatedModules: true
    }
  }
};

// 前端测试环境特殊配置
if (process.env.TEST_ENV === 'ui') {
  config.testEnvironment = 'jsdom';
  config.setupFilesAfterEnv = [
    '<rootDir>/src/test/setup.ts',
    '@testing-library/jest-dom'
  ];
}

export default config;