credit like probot

const Canvas = require('canvas')
const credits = JSON.parse(fs.readFileSync("./credits.json"));
var time = require("./time.json");
client.on("message", async message => {
  if (message.author.bot || message.channel.type === "dm") return;
  let args = message.content.split(" ");
  let author = message.author.id;
  if (!credits[author])
    credits[author] = {
      credits: 0
    };
  fs.writeFileSync("./credits.json", JSON.stringify(credits, null, 4));
if (args[0].toLowerCase() == `${prefix}credits` ||
args[0].toLowerCase() === `${prefix}credit` ||
args[0].toLowerCase() === `c`

) {
    const mention = message.mentions.users.first() || message.author;
    const mentionn = message.mentions.users.first();
    if (!args[2]) {
      message.channel.send(
        `**:bank: | ${mention.username}, Your :credit_card: balance is \`$${credits[mention.id].credits}\`**`
      );
    } else if (mentionn && args[2]) {
      if (isNaN(args[2])) return message.channel.send(`** :interrobang: | ${message.author.username}, i can't find it!**`);
      if (args[2] < 1) return message.channel.send(`** :interrobang: | ${message.author.username}, type the credit you need to transfer!**`);
      if (mention.bot) return message.channel.send(`**:thinking: | ${message.author.username}, bots do not have credits**`);
      if (mentionn.id === message.author.id)
        return message.channel.send(`**:interrobang: | ${message.author.username}, I can't find User **`);
      if (args[2] > credits[author].credits)
        return message.channel.send(
          `**:thinking: | ${message.author.username}, Your balance is not enough for that!**`
        );
      if (args[2].includes("-")) return message.channel.send(`**:interrobang: | ${message.author.username}, type the credit you need to transfer!**`);
      //let resulting = Math.floor(args[2] - args[2] * (5 / 100));
      let tax = Math.floor(args[2] * (5 / 100));
      let first = Math.floor(Math.random() * 10);
      let second = Math.floor(Math.random() * 10);
      let third = Math.floor(Math.random() * 10);
      let fourth = Math.floor(Math.random() * 10);
      let num = `${ first }${ second }${ third }${ fourth }`;
      let canvas = Canvas.createCanvas(100, 50);
      let ctx = canvas.getContext("2d");
 //let tax = message.content.split(" ")[1]
let Price = message.content.split(" ")[2];
 //tax = tax.replace(/%5/g,"");
let resulting = Math.floor(Price-(Price*(5/100)));      const background = await Canvas.loadImage(
        "https://cdn.discordapp.com/attachments/365219235288317962/656362038884565014/captcha.png"
      );
      ctx.drawImage(background, 6, 3, canvas.width, canvas.height);
      ctx.font = "25px Tahoma";
          ctx.fontSize = "7px";
          ctx.fillStyle = "Yellow";
message.delete();
     //let resulting = Math.floor(Price-(Price*(5/100)));
      message.channel.send(`**${message.author.username}, Transfer Fees \`${tax}\`, Amount :\`${resulting}\` **
   type these numbers to confirm : `
).then(m => {

          ctx.fillText(num, canvas.width / 4.8, canvas.height / 1.5);
          message.channel.sendFile(canvas.toBuffer()).then(s => {
            message.channel
              .awaitMessages(r => r.author.id === message.author.id, {
                max: 1,
                time: 20000,
                errors: ["time"]

              })

              .then(collected => {

                if (collected.first().content === num) {

                  message.channel.send(
                    `**:moneybag: | ${
                      message.author.username
                    }, has transferred \`$${resulting}\` to ${mentionn}**`
                  );           m.delete();
s.delete();
                  mention.send(
                    `**:atm: | Transfer Receipt**\`\`\`You Have Received \$${resulting}\ From User ${message.author.username}; (ID ${    message.author.id     })\`\`\``);
  m.delete();
s.delete();

                  credits[author].credits += Math.floor(
                    -resulting
                  );
                  credits[mentionn.id].credits += Math.floor(
                    +resulting
                  );
                  fs.writeFileSync(
                    "./credits.json",
                    JSON.stringify(credits, null, 4)
                  );
                } else {
                  m.delete();
                }
              });
          });
        });
    }
  }

  if (args[0].toLowerCase() === `${prefix}daily` ||
 args[0].toLowerCase() === `d`
) {
    let cooldown = 8.64e7;
    let Daily = time[message.author.id];
    if (Daily !== null && cooldown - (Date.now() - Daily) > 0) {
      let times = cooldown - (Date.now() - Daily);
      message.channel.send( `**:rolling_eyes: | ${ message.author.username }, your daily credits refreshes in \'${pretty(times, { verbose: true })}'.\**`);
      fs.writeFile("./time.json", JSON.stringify(time), function(e) {
        if (e) throw e;
      });
    } else {
      let ammount = (300, 500, 100, 200, 120, 150, 350, 320, 220, 250);
      credits[author].credits += ammount;
      time[message.author.id] = Date.now();
      message.channel.send(
        `**:moneybag: ${message.author.username}, You got :dollar: ${ammount} daily credits!**`
      );
      fs.writeFile("./credits.json", JSON.stringify(credits), function(e) {
        if (e) throw e;
      });
    }
  }
});