const path = require('path');
const src = path.resolve(__dirname, 'src');

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    sourceType: 'module',
    ecmaFeatures: { jsx: true },
  },
  plugins: ['@typescript-eslint/eslint-plugin', 'react', 'react-hooks', 'import'],
  extends: [
    'plugin:@typescript-eslint/recommended',
    'plugin:react/recommended',
    'plugin:react-hooks/recommended',
  ],
  root: true,
  env: {
    browser: true,
    es2020: true,
  },
  settings: {
    react: { version: 'detect' },
    'import/resolver': {
      typescript: {
        alwaysTryTypes: true,
        project: './tsconfig.json',
      },
    },
  },
  ignorePatterns: ['.eslintrc.cjs', 'vite.config.ts', 'vitest.config.ts', 'dist/'],
  rules: {
    '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
    '@typescript-eslint/no-explicit-any': 'off',
    'react/react-in-jsx-scope': 'off',

    // FSD layer boundaries
    // NOTE: `from` = what's being imported, `target` = the file doing the import
    'import/no-restricted-paths': [
      'error',
      {
        zones: [
          // shared/ cannot import from entities/, features/, widgets/, pages/, app/
          { from: `${src}/entities`, target: `${src}/shared` },
          { from: `${src}/features`, target: `${src}/shared` },
          { from: `${src}/widgets`, target: `${src}/shared` },
          { from: `${src}/pages`, target: `${src}/shared` },
          { from: `${src}/app`, target: `${src}/shared` },
          // entities/ cannot import from features/, widgets/, pages/, app/
          { from: `${src}/features`, target: `${src}/entities` },
          { from: `${src}/widgets`, target: `${src}/entities` },
          { from: `${src}/pages`, target: `${src}/entities` },
          { from: `${src}/app`, target: `${src}/entities` },
          // features/ cannot import from widgets/, pages/, app/
          { from: `${src}/widgets`, target: `${src}/features` },
          { from: `${src}/pages`, target: `${src}/features` },
          { from: `${src}/app`, target: `${src}/features` },
          // widgets/ cannot import from pages/, app/
          { from: `${src}/pages`, target: `${src}/widgets` },
          { from: `${src}/app`, target: `${src}/widgets` },
          // pages/ cannot import from app/
          { from: `${src}/app`, target: `${src}/pages` },

        ],
      },
    ],
  },
};