//Works as of 1st of Dec, 2018
var lastmsg = "message" // Copy the ID of the newest message you want to be cleared
var youruser = "username" // Your username.
clearMessages = function(){
	const authToken = "token"
	// ^ The above is your token value, not fingerprint
	// To get it, open up your browser's dev stuff, go to Applications, and then open up local storage
	// when you refresh the page, a value for token will appear, but only for a few seconds.
	// You have to ninja a CTRL+C of that value so you can put it here.
	const channel = "channel";
	// ^ This you can get from the URL that shows up in the browser version of discord; it's the ~18-digit number in it.
/*
MAKE SURE ALL OF THE IDS ARE GIVEN A STRINGS, NOT LITERAL NUMBERS!
OTHERWISE, JAVASCRIPT WILL ROUND THEM A LITTLE, CAUSING STUPID FUCKIN 404 ERRORS
*/
   const baseURL = "https://discordapp.com/api/channels/" + channel + "/messages";
	const headers = {"Authorization": authToken };

	let clock = 0;
	let interval = 500;

	function delay(duration) {
		return new Promise((resolve, reject) => {
			setTimeout(() => resolve(), duration);
		});
	}

	fetch(baseURL + "?before=" + lastmsg, {headers, method: 'GET'})// Fetch the message data from discord
		.then(resp => resp.json()) // Make it into a json
		.then(messages => { // Call that json "messages" and do this function with it as the parameter:
			if(typeof messages == "undefined")
			{
				console.log("Yeah, you fucked one of your IDs up, son.");
				throw new Error();
			}
			return Promise.all(messages.map(
			(message) => { // Call this function for all messages we got
				lastmsg = message.id
				if(message.author.username == youruser)
				{
					return delay(clock += interval).then(() => fetch(`${baseURL}/${message.id}`, {headers, method: 'DELETE'}));
				}
				else
				{
					//console.log("Found a message written by someone else!");
					return
				}
			}));
		}).then(() => clearMessages()); // And once we've deleted all the messages we can see, ask for more!
}
clearMessages();