var nodemailer = require("nodemailer");
var handlebars = require("handlebars");
const cron = require('node-cron');
var fs = require("fs");
let transporter = nodemailer.createTransport({
    pool: true,
    host: process.env.host,
    port: 587,
    secure: false, // use TLS
    auth: {
      user: process.env.mailuser,
      pass: process.env.mailpass,
    },
    tls: {
        ciphers:'SSLv3'
    }
  });
  
var prefix = "/opt/app/"
  
var readHTMLFile = function(path, callback) {
    fs.readFile(path, {encoding: 'utf-8'}, function (err, html) {
        if (err) {
            throw err;
            callback(err);
        }
        else {
            callback(null, html);
        }
    });
};

var mysql = require('mysql');
const { exit } = require("process");

var con = mysql.createConnection({
    host: process.env.mysqlhost,
    user: process.env.mysqluser,
    password: process.env.mysqlpass,
    database: "wednesday_db"
});

console.log("STARTED!")

con.connect(function(err) {
    if (err) throw err;
    //console.log("You are connected!");
    console.log("connected waiting for wednesday!")
    cron.schedule('0 0 * * *', function() {
        console.log('connected waiting for wednesday!');
    });
    cron.schedule('0 0 * * WED', function() {
        console.log('running a task every wed');
        check();
    });
});



var count = 0;

//console.log(mURL);

function check(){
    query = "SELECT user_email FROM users WHERE need_wed = '1'";
    con.query(query, function(error,results,fields){
        if(error) throw error;
        console.log(results);
        results.forEach(row => {
                    var htmlToSend;
                    readHTMLFile(prefix+"email.html",function(err,html){
                        //console.log(html)
                        //console.log(randURL)
                        var template = handlebars.compile(html);
                        var replacements = {
                            htmlURL: "https://tgj.services",
                        };


                        htmlToSend = template(replacements);
                        var mailOptions = {
                            from: 'wednesday@tgj.services',
                            to: row["user_email"],
                            subject: "IT'S WEDNESDAY MY DUUDES!",
                            html: htmlToSend
                        };
                        //console.log(htmlToSend)
                        console.log("Job Finished! - " + row["user_email"]);
                        SendMail(mailOptions,results);
                    });
            count += 1;
        });
    });
}

function SendMail(options,results){  
    transporter.sendMail(options, function(error, info){
        if (error) {
        console.log(error);
        } else {
        console.log('Email sent: ' + info.response);
        }
    });
    console.log(count)
}

function disconnect(){
    con.end();
}