import js from "@eslint/js";
import prettier from "eslint-config-prettier";
import globals from "globals";
import tseslint from "typescript-eslint";

// packages/sim and packages/content must stay pure: time and randomness are
// always passed in as arguments (implementation plan rule 0.1.4).
const impureMessage = "Not allowed in pure packages; pass time and seeds in as arguments.";

export default tseslint.config(
  {
    ignores: [
      "**/node_modules/**",
      "**/dist/**",
      "**/dist-*/**",
      "**/coverage/**",
      ".pnpm-store/**",
    ],
  },
  js.configs.recommended,
  ...tseslint.configs.recommended,
  {
    languageOptions: {
      globals: { ...globals.node },
    },
    rules: {
      // Allow deliberately unused names such as placeholder parameters (_url).
      "@typescript-eslint/no-unused-vars": [
        "error",
        { argsIgnorePattern: "^_", varsIgnorePattern: "^_" },
      ],
    },
  },
  {
    files: ["apps/web/**/*.{ts,tsx}"],
    languageOptions: {
      globals: { ...globals.browser },
    },
  },
  {
    files: ["packages/sim/**/*.ts", "packages/content/**/*.ts"],
    rules: {
      "no-restricted-properties": [
        "error",
        { object: "Math", property: "random", message: impureMessage },
        { object: "Date", property: "now", message: impureMessage },
      ],
      "no-restricted-syntax": [
        "error",
        {
          selector: "NewExpression[callee.name='Date'][arguments.length=0]",
          message: impureMessage,
        },
      ],
    },
  },
  prettier,
);