console.log("Hello!");
const Discord = require("discord.js");
const bot = new Discord.Client();

bot.login("Bot Token")

bot.on('ready', () => { var channel = bot.channels.get("Channel ID ").send("!cauvong <@&ROLE_ID> ");   /// < role or roleID
})

bot.on("message", (message) => {
    if (message.content == "!cauvong **@Role Name**") { < /// role name
        setTimeout(function(){
            bot.channels.get("Channel ID").send("!cauvong <@&ROLE_ID>);
       }, 900000) /// < 15min
    }
});