const mysql = require('mysql')

module.exports = function rewardRedemption(user_id, user_name) {
	// Create a connection to the MySQL database
	const connection = mysql.createConnection({
		host: process.env.MYSQL_HOST,
		user: process.env.MYSQL_USER,
		password: process.env.MYSQL_PASSWORD,
		database: process.env.MYSQL_DATABASE
	})

	// Connect to the database
	connection.connect(error => {
		if (error) return console.error(error)
		console.log(`Connected to MySql database as id ${connection.threadId} !`)
	})

	// Check if the user already exists in the rewards table
	connection.query('SELECT * FROM rewards WHERE user_id = ?', [user_id], (error, results) => {
		if (error) return console.error(error)

		if (results.length === 0) {
			// User doesn't exist, insert a new row
			connection.query('INSERT INTO rewards SET ?', { user_id, user_name, count: 1 }, error => {
				if (error) return console.error(error)
			})
		} else {
			// User exists, update the count
			const newRow = { count: results[0].count + 1 }
			connection.query('UPDATE rewards SET ? WHERE user_id = ?', [newRow, user_id], error => {
				if (error) return console.error(error)
			})
		}
	})

	// Terminate the connection to the database
	connection.end()
}