import js from "@eslint/js";
import globals from "globals";
import tseslint from "typescript-eslint";
import reactHooks from "eslint-plugin-react-hooks";

export default tseslint.config(
  {
    ignores: ["node_modules/", "dist/", "src-tauri/", "public/", "docs/", "playwright-report/", "test-results/"],
  },
  js.configs.recommended,
  tseslint.configs.recommended,
  reactHooks.configs.flat.recommended,
  {
    rules: {
      // Leading underscore marks an intentionally unused binding (omitting a key via rest, unused
      // override parameters).
      "@typescript-eslint/no-unused-vars": [
        "error",
        { argsIgnorePattern: "^_", varsIgnorePattern: "^_", caughtErrorsIgnorePattern: "^_", ignoreRestSiblings: true },
      ],
      // The BOM and NBSP are written literally on purpose in the CSV exporters and the text sanitiser.
      "no-irregular-whitespace": ["error", { skipStrings: true, skipTemplates: true, skipRegExps: true }],
    },
  },
  {
    // The React Compiler rules shipped in eslint-plugin-react-hooks 7 flag long-standing patterns
    // here (load data on mount, "latest value" refs written during render). They are legitimate
    // design feedback but not bugs, and rewriting them blind risks behaviour changes in an
    // effect-heavy app, so they stay visible as warnings until each site is reworked.
    files: ["src/**/*.{ts,tsx}"],
    rules: {
      "react-hooks/set-state-in-effect": "warn",
      "react-hooks/refs": "warn",
      "react-hooks/immutability": "warn",
    },
  },
  {
    // Test helper that reads react-pdf's untyped internal layout data.
    files: ["src/pdf/testing/**/*.ts"],
    rules: { "@typescript-eslint/no-explicit-any": "warn" },
  },
  {
    files: ["src/**/*.{ts,tsx}"],
    languageOptions: { globals: globals.browser },
  },
  {
    files: ["scripts/**/*.{js,mjs}", "e2e/**/*.ts", "*.config.{js,ts}"],
    languageOptions: { globals: globals.node },
  },
);