password manager

const { Mintblue } = require('mintblue');

// show the user how to use the app
if(process.argv.length < 4 || !['get', 'add'].includes(process.argv[2])) {
    console.log('Usage:');
    console.log('Add/Update password: node pwmanage.js add [name] [password]');
    console.log('Retrieve password: node pwmanage.js get [name]');
    process.exit();
}

const command = process.argv[2];
const name = process.argv[3];
let pw = process.argv[4];

(async () => {
	let client = await Mintblue.create({token: '[YOUR_SDK_KEY]'});
	let project = '[YOUR_PROJECT_ID]';

	if(command === 'add') {
        // store key value object with name and password encrypted on blockchain
	    const { txid } = await client.createTransaction({
			project_id: project, 
			outputs: [{
				type: 'data', 
				value: { name, pw },
				encrypt: true
			}]
		});
        // show result to user
		console.log(`Password stored encrypted in transaction with id ${txid}`);
	} else if (command === 'get') {
        // get all of this project's transactions
		const txs = await client.listTransactions(project);
        // find record for requested name and decrypt it
		for(let i = 0; i < txs.length; i++) {
			const payload = await client.getTransaction(txs[i].txid);
			if(payload[0].value.name === name) {
                // Show decrypted password to user
				console.log(`Password for ${name} is ${payload[0].value.pw}`);
				process.exit();
			}
		}
		console.log(`Password not found for ${name}`);
	}

})();