import js from '@eslint/js';
import tseslint from '@typescript-eslint/eslint-plugin';
import tsparser from '@typescript-eslint/parser';

export default [
  // Base JavaScript configuration
  js.configs.recommended,
  
  // Configuration for TypeScript files
  {
    files: ['**/*.ts', '**/*.tsx'],
    ignores: ['**/*.test.ts', '**/*.spec.ts', 'src/tests/**/*.ts'],
    languageOptions: {
      parser: tsparser,
      parserOptions: {
        ecmaVersion: 2022,
        sourceType: 'module',
        project: './tsconfig.json',
      },
      globals: {
        console: 'readonly',
        process: 'readonly',
        Buffer: 'readonly',
        global: 'readonly',
      },
    },
    plugins: {
      '@typescript-eslint': tseslint,
    },
    rules: {
      // TypeScript recommended rules
      ...tseslint.configs.recommended.rules,
      
      // Custom rules for the project
      '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
      '@typescript-eslint/explicit-function-return-type': 'off',
      '@typescript-eslint/explicit-module-boundary-types': 'off',
      '@typescript-eslint/no-explicit-any': 'warn',
      '@typescript-eslint/no-var-requires': 'error',
      
      // General JavaScript/TypeScript rules
      'no-console': 'warn',
      'no-debugger': 'error',
      'no-duplicate-imports': 'error',
      'no-unused-expressions': 'error',
      'prefer-const': 'error',
      'no-var': 'error',
      
      // Style rules
      'indent': ['error', 2],
      'quotes': ['error', 'single'],
      'semi': ['error', 'always'],
      'comma-dangle': ['error', 'always-multiline'],
      'object-curly-spacing': ['error', 'always'],
      'array-bracket-spacing': ['error', 'never'],
    },
  },
  
  // Specific configuration for test files
  {
    files: ['**/*.test.ts', '**/*.spec.ts', 'src/tests/**/*.ts'],
    languageOptions: {
      parser: tsparser,
      parserOptions: {
        ecmaVersion: 2022,
        sourceType: 'module',
      },
      globals: {
        console: 'readonly',
        process: 'readonly',
        Buffer: 'readonly',
        global: 'writable',
        describe: 'readonly',
        it: 'readonly',
        test: 'readonly',
        expect: 'readonly',
        beforeEach: 'readonly',
        afterEach: 'readonly',
        beforeAll: 'readonly',
        afterAll: 'readonly',
        jest: 'readonly',
        require: 'readonly',
      },
    },
    plugins: {
      '@typescript-eslint': tseslint,
    },
    rules: {
      // Allow console.log in tests
      'no-console': 'off',
      // Allow any in tests for mocking
      '@typescript-eslint/no-explicit-any': 'off',
      // Allow unused vars in tests (for setup)
      '@typescript-eslint/no-unused-vars': 'off',
    },
  },
  
  // Configuration for JavaScript files (if any)
  {
    files: ['**/*.js', '**/*.mjs'],
    languageOptions: {
      ecmaVersion: 2022,
      sourceType: 'module',
    },
    rules: {
      'no-console': 'warn',
      'no-debugger': 'error',
      'prefer-const': 'error',
      'no-var': 'error',
    },
  },
  
  // Files and directories to ignore
  {
    ignores: [
      'node_modules/**',
      'build/**',
      'dist/**',
      '*.config.js',
      'coverage/**',
      '.git/**',
      '.vscode/**',
      '*.min.js',
    ],
  },
];