const nextJest = require('next/jest');

const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load next.config.js and .env files
  dir: './',
});

// Add any custom config to be passed to Jest
const customJestConfig = {
  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  testEnvironment: 'jsdom',
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
    '^@/components/(.*)$': '<rootDir>/src/components/$1',
    '^@/lib/(.*)$': '<rootDir>/src/lib/$1',
    '^@/utils/(.*)$': '<rootDir>/src/utils/$1',
    '^@/hooks/(.*)$': '<rootDir>/src/hooks/$1',
    '^@/types/(.*)$': '<rootDir>/src/types/$1',
  },
  collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}', '!src/**/*.d.ts', '!src/**/index.ts'],
  coverageThreshold: {
    global: {
      branches: 70,
      functions: 70,
      lines: 70,
      statements: 70,
    },
  },
  testMatch: ['**/__tests__/**/*.(js|jsx|ts|tsx)', '**/*.(test|spec).(js|jsx|ts|tsx)'],
  testPathIgnorePatterns: ['<rootDir>/.next/', '<rootDir>/node_modules/', '<rootDir>/e2e/'],
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': ['babel-jest', { presets: ['next/babel'] }],
  },
  transformIgnorePatterns: ['/node_modules/', '^.+\\.module\\.(css|sass|scss)$'],
  // Performance optimizations
  maxWorkers: '50%',
  cache: true,
  cacheDirectory: '.jest-cache',
  clearMocks: true,
  collectCoverage: false, // Only collect coverage when explicitly requested
  coverageReporters: ['text', 'lcov'],
  errorOnDeprecated: true,
  // Reduce memory usage
  logHeapUsage: true,
  // Faster test discovery
  testLocationInResults: true,
  // Skip coverage for faster runs in watch mode
  watchPathIgnorePatterns: ['<rootDir>/coverage/', '<rootDir>/.next/'],
};

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
module.exports = createJestConfig(customJestConfig);