const angularEslint = require('angular-eslint');

/** @type {import('eslint').Linter.FlatConfig[]} */
const config = [
  {
    ignores: ['dist/**', 'node_modules/**', '.angular/**', 'backend/sql/**'],
  },

  {
    files: ['**/*.{ts,tsx,js,cjs,mjs}'],

    languageOptions: {
      ecmaVersion: 'latest',
      sourceType: 'module',
      parser: require('@typescript-eslint/parser'),
      parserOptions: {
        ecmaFeatures: {},
      },
    },

    plugins: {
      '@angular-eslint': angularEslint.tsPlugin,
      '@typescript-eslint': require('@typescript-eslint/eslint-plugin'),
      import: require('eslint-plugin-import'),
      promise: require('eslint-plugin-promise'),
      'unused-imports': require('eslint-plugin-unused-imports'),
      n: require('eslint-plugin-n'),
    },

    rules: {
      // Your selectors
      '@angular-eslint/directive-selector': [
        'error',
        { type: 'attribute', prefix: 'app', style: 'camelCase' },
      ],
      '@angular-eslint/component-selector': [
        'error',
        { type: 'element', prefix: 'app', style: 'kebab-case' },
      ],

      // Practical TS hygiene
      '@typescript-eslint/no-unused-vars': [
        'error',
        { argsIgnorePattern: '^_', varsIgnorePattern: '^_' },
      ],
      '@typescript-eslint/consistent-type-imports': [
        'warn',
        { prefer: 'type-imports', fixStyle: 'separate-type-imports' },
      ],

      /* Base */
      'no-debugger': 'warn',
      'no-var': 'error',
      'prefer-const': ['error', { destructuring: 'all' }],

      /* TypeScript */
      'unused-imports/no-unused-imports': 'warn',
      'unused-imports/no-unused-vars': [
        'warn',
        { vars: 'all', varsIgnorePattern: '^_', args: 'after-used', argsIgnorePattern: '^_' },
      ],
      '@typescript-eslint/no-explicit-any': 'error',

      /* Imports */
      'import/first': 'error',
      'import/no-duplicates': 'error',
      'import/newline-after-import': 'warn',
      'import/no-extraneous-dependencies': [
        'error',
        {
          devDependencies: [
            '**/*.config*.{js,cjs,mjs,ts}',
            '**/scripts/**',
            '**/*.test.{ts,js}',
            '**/Testing.{ts,js}',
            '**/.eslintrc.{js,cjs}',
          ],
        },
      ],

      /* Node */
      'n/no-missing-import': 'off',
      'n/no-unsupported-features/es-syntax': 'off',

      /* Promis */
      'promise/catch-or-return': 'warn',
      'promise/always-return': 'off',

      /* „Fire-and-forget“-Promises `void` */
      'no-void': ['warn', { allowAsStatement: true }],
    },

    settings: {
      'import/resolver': {
        typescript: {
          alwaysTryTypes: true,
        },
        node: true,
      },
    },
  },

  {
    files: ['**/*.{js,cjs}'],
    languageOptions: {
      sourceType: 'script',
    },
    rules: {
      'n/global-require': 'off',
    },
  },
];

module.exports = config;