const bcrypt = require('bcrypt');

// Helper Functions

const generateRandomString = function() {

let randomString = Math.random().toString(36).substring(2, 8);

return randomString;

};

// Verify email

const verifyEmail = function(userDatabase, email) {

for (let user in userDatabase) {

if (userDatabase[user].email === email) {

return userDatabase[user];

}

}

return false;

};

// Verify password

const verifyPassword = function(userDatabase, email, password) {

const userFound = verifyEmail(userDatabase, email);

if (userFound && bcrypt.compareSync(password, userFound.password)) {

return userFound;

}

return false;

};

// Returns URL, where the userID = the logged-in user

const urlsForUser = (userDatabase, users) => {

const results = {};

for (let key in userDatabase) {

const urlObj = userDatabase[key];

if (urlObj.userID === users) {

results[key] = urlObj;

}

}

return results;

};

module.exports = { generateRandomString, verifyEmail, verifyPassword, urlsForUser };