import { FlatCompat } from "@eslint/eslintrc";
import eslintPluginImport from "eslint-plugin-import";
import eslintPluginReact from "eslint-plugin-react";
import eslintPluginReactHooks from "eslint-plugin-react-hooks";
import eslintPluginSort from "eslint-plugin-simple-import-sort";
import eslintPluginUnused from "eslint-plugin-unused-imports";
import { dirname } from "path";
import { fileURLToPath } from "url";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const compat = new FlatCompat({
  baseDirectory: __dirname,
});

const eslintConfig = [
  ...compat.extends("next/core-web-vitals", "next/typescript"),
  {
    plugins: {
      import: eslintPluginImport,
      "unused-imports": eslintPluginUnused,
      "simple-import-sort": eslintPluginSort,
      react: eslintPluginReact,
      "react-hooks": eslintPluginReactHooks,
    },

    rules: {
    /* неиспользуемые переменные и импорты */
    "@typescript-eslint/no-unused-vars": [
      "warn",
      { argsIgnorePattern: "^_", varsIgnorePattern: "^_" },
    ],
    "unused-imports/no-unused-imports": "error",
    "unused-imports/no-unused-vars": [
      "warn",
      {
        vars: "all",
        varsIgnorePattern: "^_",
        args: "after-used",
        argsIgnorePattern: "^_",
      },
    ],

    /* порядок импортов: стили .module.(s)css внизу */
    "simple-import-sort/imports": [
      "error",
      {
        groups: [
          ["^\\u0000"], // side-effects
          ["^react", "^next", "^@?\\w"], // пакеты
          ["^@/"], // алиасы проекта
          ["^\\.\\.?(?:/|$)"], // относительные импорты (включая "..")
          ["^.+\\.module\\.(css|scss)$"], // модули стилей
        ],
      },
    ],
    "simple-import-sort/exports": "error",

    /* React правила */
    "react/jsx-uses-react": "off", // не нужно в React 17+
    "react/react-in-jsx-scope": "off", // не нужно в React 17+
    "react/prop-types": "off", // используем TypeScript
    "react/display-name": "warn",
    "react/jsx-key": "error",
    "react/jsx-no-duplicate-props": "error",
    "react/jsx-no-undef": "error",
    // "react/no-array-index-key": "warn",
    "react/no-danger": "warn",
    "react/no-deprecated": "error",
    "react/no-direct-mutation-state": "error",
    "react/no-find-dom-node": "error",
    "react/no-is-mounted": "error",
    "react/no-render-return-value": "error",
    "react/no-string-refs": "error",
    "react/no-unescaped-entities": "warn",
    "react/no-unknown-property": "error",
    "react/no-unsafe": "warn",
    "react/self-closing-comp": "error",

    /* React Hooks правила */
    "react-hooks/rules-of-hooks": "error",
    "react-hooks/exhaustive-deps": "warn",

    /* TypeScript правила */
    "@typescript-eslint/no-explicit-any": "warn",
    "@typescript-eslint/no-non-null-assertion": "warn",
    "@typescript-eslint/no-var-requires": "error",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/no-empty-function": "warn",
    "@typescript-eslint/no-inferrable-types": "error",

    /* Общие правила */
    "no-console": "warn",
    "no-debugger": "error",
    "no-alert": "warn",
    "no-var": "error",
    "prefer-const": "error",
    "no-unused-expressions": "error",
    "no-duplicate-imports": "error",
    "no-multiple-empty-lines": ["error", { max: 2 }],
    "eol-last": "error",
    "no-trailing-spaces": "error",

    /* Запрет SVG импортов как компонентов */
    "no-restricted-imports": [
      "error",
      {
        patterns: [
          {
            group: ["*.svg"],
            message: "❌ SVG imports as components break in production. Use inline SVG or next/image.",
          },
        ],
      },
    ],
  },
}, {
  ignores: [
    "node_modules/**",
    ".next/**",
    "out/**",
    "build/**",
    "next-env.d.ts",
    "public/metrics-scripts/**"
  ]
}];

export default eslintConfig;