delete all message in a discord dm

delete-discord-dms.js

clearMessages = function(guild_id, author_id, authToken, deleted = new Set()) {
	const searchURL = `https://discordapp.com/api/v6/channels/${guild_id}/messages/search?author_id=${author_id}&include_nsfw=true`
	const headers = {
		Authorization: authToken
	}
	let clock = 0
	interval = 500

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

	function loadMessages() {
		return fetch(searchURL, {
			headers
		})
	}

	function tryDeleteMessage(message) {
		if (message.author.id == author_id && !deleted.has(message.id)) { // skip already deleted messages
			console.log(`Deleting message ${message.id} from ${message.author.username} (${message.content}...)`)
			return fetch(`https://discordapp.com/api/v6/channels/${message.channel_id}/messages/${message.id}`, {
				headers,
				method: 'DELETE'
			})
		}
	}
	let messagesStore = []

	loadMessages()
		.then(resp => resp.json())
		.then(messages => {
			messages = messages.messages
			if (messages === undefined || messages === null || messages.length == 0) {
				console.log(`Couldn't load messages. Check guild id, author id, and auth token.`)
				return
			}
			messages = messages.filter(m => m) // clean undefined
			messages = [].concat.apply([], messages); // flatten
			messages = messages.filter(m => m) // clean undefined
			if (messages.length === 0) {
				console.log(`Couldn't load messages. Check guild id, author id, and auth token.`)
				return
			}

			//filter by author
			messages = messages.filter(m => m.author.id == author_id)
			// unique by id
			messages = messages.filter((e, i) => messages.findIndex(a => a.id === e.id) === i);

			beforeId = messages[messages.length - 1].id
			messagesStore = messagesStore.concat(messages)
			return Promise.all(messagesStore.map(message => {
				return delay(clock += interval)
					.then(() => tryDeleteMessage(message))
					.then(resp => {
						if (resp) {
							if (resp.status == 429) {
								interval += 10
								console.log(`Too fast; bumping interval to ${interval}`)
							} else if (resp.status === 204) {
								deleted.add(message.id) // mark deleted
								return resp.text()
							} else if (resp.status === 403) {
								deleted.add(message.id) // in case of call messages
								return resp.text()
							}
						}
					})
			}))
		})
		.then(function() {
			if (messagesStore.length !== 0) {
				clearMessages(guild_id, author_id, authToken, deleted)
			} else {
				console.log(`We have loaded all messages in this chat.`)
			}
		})
}


/* AUTH TOKEN HERE */
/* AUTH TOKEN HERE */
/* AUTH TOKEN HERE */
var authToken = ""
/* AUTH TOKEN HERE */
/* AUTH TOKEN HERE */
/* AUTH TOKEN HERE */


if (authToken.length === 0) {
	var localToken = document.body.appendChild(document.createElement(`iframe`)).contentWindow.localStorage.token
	if (localToken === undefined) {
		console.log(`Getting the auth token from localStorage isn't supported on Chrome or the desktop client. Use Firefox or grab it from a network request's headers.`)
		console.log(`To do that go to the Network tab of your inspector and copy the Authorization header of a request. There are detailed instructions in the tutorial.`)
	} else {
		authToken = JSON.parse(localToken)
	}
}
if (authToken.length !== 0) {
	clearMessages('0000000000000000', '0000000000000000', authToken)
}