/**
 * This script creates a test boilerplate file in the appropriate
 * directory based on the type selected.
 * @example npm run test:create
 */

import chalk from "chalk";
import inquirer from "inquirer";
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

//#region Constants

const version = "2.0.1";
// Get the directory name of the current module file
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const projectRoot = path.join(__dirname, "..", "..");
const boilerplateFilePath = path.join(__dirname, "test-boilerplate.ts");
const choices = [
  { label: "Move", dir: "moves" },
  { label: "Ability", dir: "abilities" },
  { label: "Item", dir: "items" },
  { label: "Mystery Encounter", dir: "mystery-encounter/encounters" },
  { label: "Utils", dir: "utils" },
  { label: "UI", dir: "ui" },
];

//#endregion
//#region Functions

/**
 * Get the path to a given folder in the test directory
 * @param {...string} folders the subfolders to append to the base path
 * @returns {string} the path to the requested folder
 */
function getTestFolderPath(...folders) {
  return path.join(projectRoot, "test", ...folders);
}

/**
 * Prompts the user to select a type via list.
 * @returns {Promise<{selectedOption: {label: string, dir: string}}>} the selected type
 */
async function promptTestType() {
  const typeAnswer = await inquirer.prompt([
    {
      type: "list",
      name: "selectedOption",
      message: "What type of test would you like to create?",
      choices: [...choices.map(choice => ({ name: choice.label, value: choice })), "EXIT"],
    },
  ]);

  if (typeAnswer.selectedOption === "EXIT") {
    console.log("Exiting...");
    return process.exit();
  }
  if (!choices.some(choice => choice.dir === typeAnswer.selectedOption.dir)) {
    console.error(`Please provide a valid type: (${choices.map(choice => choice.label).join(", ")})!`);
    return await promptTestType();
  }

  return typeAnswer;
}

/**
 * Prompts the user to provide a file name.
 * @param {string} selectedType
 * @returns {Promise<{userInput: string}>} the selected file name
 */
async function promptFileName(selectedType) {
  /** @type {{userInput: string}} */
  const fileNameAnswer = await inquirer.prompt([
    {
      type: "input",
      name: "userInput",
      message: `Please provide the name of the ${selectedType}:`,
    },
  ]);

  if (!fileNameAnswer.userInput || fileNameAnswer.userInput.trim().length === 0) {
    console.error("Please provide a valid file name!");
    return await promptFileName(selectedType);
  }

  return fileNameAnswer;
}

/**
 * Runs the interactive test:create "CLI"
 * @returns {Promise<void>}
 */
async function runInteractive() {
  console.group(chalk.grey(`Create Test - v${version}\n`));

  try {
    const typeAnswer = await promptTestType();
    const fileNameAnswer = await promptFileName(typeAnswer.selectedOption.label);

    const type = typeAnswer.selectedOption;
    // Convert fileName from snake_case or camelCase to kebab-case
    const fileName = fileNameAnswer.userInput
      .replace(/_+/g, "-") // Convert snake_case (underscore) to kebab-case (dashes)
      .replace(/([a-z])([A-Z])/g, "$1-$2") // Convert camelCase to kebab-case
      .replace(/\s+/g, "-") // Replace spaces with dashes
      .toLowerCase(); // Ensure all lowercase
    // Format the description for the test case

    const formattedName = fileName.replace(/-/g, " ").replace(/\b\w/g, char => char.toUpperCase());
    // Determine the directory based on the type
    const dir = getTestFolderPath(type.dir);
    const description = `${type.label} - ${formattedName}`;

    // Define the content template
    const content = fs.readFileSync(boilerplateFilePath, "utf8").replace("{{description}}", description);

    // Ensure the directory exists
    if (!fs.existsSync(dir)) {
      fs.mkdirSync(dir, { recursive: true });
    }

    // Create the file with the given name
    const filePath = path.join(dir, `${fileName}.test.ts`);

    if (fs.existsSync(filePath)) {
      console.error(chalk.red.bold(`\n✗ File "${fileName}.test.ts" already exists!\n`));
      process.exit(1);
    }

    // Write the template content to the file
    fs.writeFileSync(filePath, content, "utf8");

    console.log(chalk.green.bold(`\n✔ File created at: test/${type.dir}/${fileName}.test.ts\n`));
    console.groupEnd();
  } catch (err) {
    console.error(chalk.red("✗ Error: ", err.message));
  }
}

//#endregion
//#region Run

runInteractive();

//#endregion