import globals from 'globals';
import tseslint from 'typescript-eslint';
import pluginReact from 'eslint-plugin-react';
import pluginReactHooks from 'eslint-plugin-react-hooks';
import pluginReactRefresh from 'eslint-plugin-react-refresh';
import eslintConfigPrettier from 'eslint-config-prettier';

export default tseslint.config(
  {
    // Global ignores
    ignores: ['dist', '.gitea', 'node_modules', '*.cjs'],
  },
  {
    // All files
    files: ['**/*.{js,mjs,cjs,ts,jsx,tsx}'],
    plugins: {
      react: pluginReact,
      'react-hooks': pluginReactHooks,
      'react-refresh': pluginReactRefresh,
    },
    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.es2020,
      },
    },
    rules: {
      'react-refresh/only-export-components': ['warn', { allowConstantExport: true }],
    },
  },
  // TypeScript files
  ...tseslint.configs.recommended,
  // Allow underscore-prefixed variables to be unused (common convention for intentionally unused params)
  {
    files: ['**/*.{ts,tsx}'],
    rules: {
      '@typescript-eslint/no-unused-vars': [
        'error',
        {
          argsIgnorePattern: '^_',
          varsIgnorePattern: '^_',
        },
      ],
    },
  },
  // Relaxed rules for test files and test setup - see ADR-021 for rationale
  {
    files: [
      '**/*.test.ts',
      '**/*.test.tsx',
      '**/*.spec.ts',
      '**/*.spec.tsx',
      '**/tests/setup/**/*.ts',
    ],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-unsafe-function-type': 'off',
    },
  },
  // Relaxed rules for type definition files - 'any' is often necessary for third-party library types
  {
    files: ['**/*.d.ts'],
    rules: {
      '@typescript-eslint/no-explicit-any': 'off',
    },
  },
  // Prettier compatibility - must be last to override other formatting rules
  eslintConfigPrettier,
);