Deletes all feed posts from a tumblelog

untumblr.js

// Deletes all feed posts from a tumblelog

process.mixin(GLOBAL, require("sys"));

var http = require("http"),
	query = require("querystring");

var hostname, email, password;

function fail (message) {
	puts(message);
	process.exit(1);
}

function request (method, path, headers) {
	if (!headers) headers = [];
	headers["Host"] = hostname;
	if (method === "POST") headers["Host"] = "www.tumblr.com";
	return http.createClient(
		80, "tumblr.com"
	).request(method, path, headers);
}

function requestForDelete (count) {
	if (!count) count = 0;
	request(
		"GET",
		"/api/read/json?" + query.stringify({
			"callback" : "deleteAndRequestNext"
		})
	).finish(function (res) {
		if (res.statusCode !== 200) {
			puts("Tumblr returned " + res.statusCode + " Retrying in 1 second...");
			if (count > 5) return fail("Too many tries, giving up.");
			return setTimeout(function () {
				requestForDelete(++count);
			}, 1000);
		}
		var body = "";
		res.addListener("body", function (chunk) {
			body += chunk;
		}).addListener("complete", function () {
			count = 0;
			eval(body);
		});
	});
}

function deleteAndRequestNext (tumblr) {
	var bounce = 0,
		wait = 0,
		count = 0;
	tumblr.posts.forEach(function (post) {
		if (!post["from-feed-id"]) return bounce++;
		setTimeout(function () {
			var body = query.stringify({
				"email" : email,
				"password" : password,
				"post-id" : post.id
			});
			var req = request(
				"POST",
				"/api/delete",
				{
					"Content-Type" : "application/x-www-form-urlencoded",
					"Content-Length" : body.length
				}
			);
			req.sendBody(body);
			req.finish(function (res) {
				if (
					res.statusCode !== 200
				) return puts("Unable to delete " + post.id + " because Tumblr returned " + res.statusCode);
				res.addListener("complete", function () {
					puts("Deleted " + post.id);
				});
			});
			if (++count === tumblr.posts.length) requestForDelete();
		}, wait);
		wait += 5900;
	});
	if (bounce === tumblr.posts.length) fail("Couldn't find any feed posts to delete.");
}

process.stdio.addListener("data", function (data) {
	data = data.replace(/\n/, "");
	if (!data) return puts("This is required to proceed. Ctrl-C to abort.");
	if (!hostname) {
		hostname = data;
		return puts("Tumblr email address?");
	}
	if (!email) {
		email = data;
		return puts("Tumblr password?");
	}
	if (!password) password = data;
	if (email && password && hostname) {
		process.stdio.close();
		puts("Untumbling...");
		requestForDelete(); 
	}
});

puts("This script will delete all feed posts from your Tumblr.");
puts("Tumblr hostname?");
process.stdio.open();