// Import needed libraries
import bcrypt from 'bcryptjs';

// Function to generate hash
const generateHash = async (password) => {
    try {
        const salt = await bcrypt.genSalt(12);
        const hash = await bcrypt.hash(password, salt);
        console.log(`PASSWORD_HASH='${hash}'`);
    } catch (error) {
        throw new Error(`Failed to generate hash : ${error}`);
    }
}

// Function to compare password with hash
const comparePassword = async (password, hash) => {
    try {
        const match = await bcrypt.compare(password, hash);
        if (match) {
            console.log('Password matches the hash !');
        } else {
            console.log('Password does not match the hash.');
        }
    } catch (error) {
        throw new Error(`Failed to compare password and hash : ${error}`);
    }
}

(async () => {
    try {
        // Retrieve command line arguments
        const args = process.argv.slice(2); // Ignore the first two arguments
        if (args.length > 2) {
            throw new Error('Usage : wgpw YOUR_PASSWORD [HASH]');
        }

        const [password, hash] = args;
        if (password && hash) {
            await comparePassword(password, hash);
        } else if (password) {
            await generateHash(password);
        }

        process.exit(0);
    } catch (error) {
        console.error(error);
        process.exit(1);
    }
})();