import { spawnSync } from "node:child_process";
import path from "node:path";
import { fileURLToPath } from "node:url";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const rootDir = path.resolve(__dirname, "..");
const tscPath = path.join(rootDir, "node_modules", "typescript", "bin", "tsc");

const lessonFiles = [
  "01-js-vs-ts/starter.ts",
  "01-js-vs-ts/answer.ts",
  "02-basic-type-annotations/starter.ts",
  "02-basic-type-annotations/answer.ts",
  "03-array-and-function-types/starter.ts",
  "03-array-and-function-types/answer.ts",
  "04-interface-object-shape/starter.ts",
  "04-interface-object-shape/answer.ts",
  "05-generic-functions/starter.ts",
  "05-generic-functions/answer.ts",
  "06-union-and-optional-props/starter.ts",
  "06-union-and-optional-props/answer.ts",
  "07-type-safe-renderer/starter.ts",
  "07-type-safe-renderer/answer.ts",
  "08-final-mini-app/starter.ts",
  "08-final-mini-app/answer.ts",
];

const sharedArgs = [
  "--noEmit",
  "--pretty",
  "false",
  "--target",
  "ES2020",
  "--module",
  "ESNext",
  "--moduleResolution",
  "Bundler",
  "--strict",
  "--skipLibCheck",
];

for (const lessonFile of lessonFiles) {
  const filePath = path.join(rootDir, lessonFile);

  console.log(`Checking ${lessonFile}`);

  const result = spawnSync(process.execPath, [tscPath, ...sharedArgs, filePath], {
    cwd: rootDir,
    stdio: "inherit",
  });

  if (result.status !== 0) {
    process.exit(result.status ?? 1);
  }
}

console.log("All lesson files passed TypeScript checks.");