import { base } from '../../eslint.config.mjs';
import boundaries from 'eslint-plugin-boundaries';
import reactHooks from 'eslint-plugin-react-hooks';
import globals from 'globals';

// Strict Feature-Sliced Design: a layer may import only from itself and the
// layers below it. Upward imports (e.g. shared → features) are build errors.
const FSD_LAYERS = ['app', 'pages', 'widgets', 'features', 'entities', 'shared'];

const fsdPolicies = FSD_LAYERS.map((layer, index) => ({
  from: { element: { types: layer } },
  allow: { to: { element: { types: { anyOf: FSD_LAYERS.slice(index) } } } },
}));

export default [
  { ignores: ['dist/**'] },
  ...base,
  {
    files: ['src/**/*.{ts,tsx}'],
    languageOptions: {
      globals: { ...globals.browser },
    },
    plugins: {
      boundaries,
      'react-hooks': reactHooks,
    },
    settings: {
      'boundaries/include': ['src/**/*'],
      'boundaries/elements': [
        { type: 'app', pattern: 'src/app/*' },
        { type: 'pages', pattern: 'src/pages/*' },
        { type: 'widgets', pattern: 'src/widgets/*' },
        { type: 'features', pattern: 'src/features/*' },
        { type: 'entities', pattern: 'src/entities/*' },
        { type: 'shared', pattern: 'src/shared/*' },
      ],
    },
    rules: {
      'react-hooks/rules-of-hooks': 'error',
      'react-hooks/exhaustive-deps': 'warn',
      'boundaries/dependencies': ['error', { default: 'disallow', policies: fsdPolicies }],
    },
  },
];