'use strict';

const Promise = require("bluebird");
const functionRateLimit = require("function-rate-limit");

const validatorAdd = require("../validators/disk-images/add");

module.exports = function({db, imageStore}) {
	const dbDiskImages = require("../db/disk-images")({db});

	let router = require("express-promise-router")();

	router.get("/", (req, res) => {
		return Promise.try(() => {
			return dbDiskImages.getAll();
		}).then((results) => {
			res.render("disk-images/list", {
				images: results
			});
		});
	});

	router.get("/add", (req, res) => {
		res.render("disk-images/add");
	});

	router.post("/add", (req, res) => {
		return Promise.try(() => {
			return validatorAdd.validate(req.body);
		}).then((result) => {
			/* FIXME: Only allow 'local' for administrators! */
			if (req.body.source === "http") {
				return Promise.try(() => {
					return imageStore.addFromUrl(req.body.url);
				}).then((downloadTracker) => {
					downloadTracker.on("progress", functionRateLimit(1, 200, (progress, description) => {
						/* FIXME: This is getting debounced to a point of pointlessness as it will only fire when the download is completed. Needs to be replaced by SSE events anyway, and rate-limited instead of debounced. */
						console.log("Download progress:", (Math.round(progress * 10000) / 100), "%");
					}));

					return downloadTracker.await();
				});
			} else if (req.body.source === "local") {
				return imageStore.addFromPath(req.body.path);
			}
		}).then((imageId) => {
			let source;

			if (req.body.source === "http") {
				source = req.body.url;
			} else if (req.body.source === "local") {
				source = req.body.path;
			}

			return dbDiskImages.addInstallISO({
				userId: 0,
				fileId: imageId,
				name: req.body.name,
				description: req.body.description,
				sourceType: req.body.source,
				source: source,
				isPublic: true
			});
		}).then(() => {
			res.redirect("/disk-images");
		});
	});

	return router;
}