const { execSync } = require("child_process");

const fs = require("fs");

const path = require("path");

const chokidar = require("chokidar");

const srcPath = path.resolve(__dirname, "../src");

const tsconfigPath = path.resolve(__dirname, "../tsconfig.json");

const [, , exercise] = process.argv;

if (!exercise) {

console.log("Please specify an exercise");

process.exit(1);

}

const allExercises = fs.readdirSync(srcPath);

let pathIndicator = ".problem.";

if (process.env.SOLUTION) {

pathIndicator = ".solution.";

}

const exercisePath = allExercises.find(

(exercisePath) =>

exercisePath.startsWith(exercise) && exercisePath.includes(pathIndicator),

);

if (!exercisePath) {

console.log(`Exercise ${exercise} not found`);

process.exit(1);

}

const exerciseFile = path.resolve(srcPath, exercisePath);

// One-liner for current directory

chokidar.watch(exerciseFile).on("all", (event, path) => {

const fileContents = fs.readFileSync(exerciseFile, "utf8");

const containsVitest = fileContents.includes("vitest");

try {

console.clear();

if (containsVitest) {

console.log("Running tests...");

execSync(`vitest run "${exerciseFile}" --passWithNoTests`, {

stdio: "inherit",

});

}

console.log("Checking types...");

execSync(`tsc "${exerciseFile}" --noEmit --strict`, {

stdio: "inherit",

});

console.log("Typecheck complete. You finished the exercise!");

} catch (e) {

console.log("Failed. Try again!");

}

});