import js from '@eslint/js'
import globals from 'globals'
import reactHooks from 'eslint-plugin-react-hooks'
import reactRefresh from 'eslint-plugin-react-refresh'
import tseslint from 'typescript-eslint'
import { defineConfig, globalIgnores } from 'eslint/config'

export default defineConfig([
  globalIgnores(['dist', 'node_modules', 'playwright-report', 'test-results']),
  {
    files: ['**/*.{js,jsx}'],
    extends: [
      js.configs.recommended,
      reactHooks.configs.flat.recommended,
      reactRefresh.configs.vite,
    ],
    languageOptions: {
      ecmaVersion: 2020,
      globals: globals.browser,
      parserOptions: {
        ecmaVersion: 'latest',
        ecmaFeatures: { jsx: true },
        sourceType: 'module',
      },
    },
    rules: {
      'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
    },
  },
  {
    files: ['**/*.{ts,tsx}'],
    extends: [
      js.configs.recommended,
      ...tseslint.configs.recommended,
      reactHooks.configs.flat.recommended,
      reactRefresh.configs.vite,
    ],
    languageOptions: {
      ecmaVersion: 2020,
      globals: globals.browser,
      parserOptions: {
        ecmaVersion: 'latest',
        ecmaFeatures: { jsx: true },
        sourceType: 'module',
      },
    },
    rules: {
      // Prefer honest CI: block unused vars that start with lowercase; allow React components / intentional _
      '@typescript-eslint/no-unused-vars': [
        'error',
        { argsIgnorePattern: '^_', varsIgnorePattern: '^[A-Z_]', caughtErrorsIgnorePattern: '^_' },
      ],
      // Existing codebase uses `any` widely — escalate in a follow-up, don't block P1
      '@typescript-eslint/no-explicit-any': 'off',
      '@typescript-eslint/no-empty-object-type': 'off',
      'no-unused-vars': 'off',
      'react-refresh/only-export-components': ['warn', { allowConstantExport: true }],
    },
  },
])