let assert = require('assert');
let urllib = require('url');
let querystring = require('querystring');

let mediaLib = require('../../lib/media.js');

let client = {
	mxcUrlToHttp: function(url, w, h, method, allowDirectLinks) {
		let hs = "https://chat.privacytools.io";
		let mxc = url.slice(6);
		if (w) {
			return `${hs}/_matrix/media/v1/thumbnail/${mxc}?w=${w}&h=${h}&method=${method}`;
		} else {
			return `${hs}/_matrix/media/v1/download/${mxc}`;
		}
	}
};

let mockEventTemplate = {
	type: "m.room.message",
	sender: "@f0x:privacytools.io",
	content: {
		body: "image.png",
		info: {
			size: 16692,
			mimetype: "image/png",
			thumbnail_info: {
				w: 268,
				h: 141,
				mimetype: "image/png",
				size: 16896
			},
			w: 268,
			h: 141,
			thumbnail_url: "mxc://privacytools.io/zBSerdKMhaXSIxfjzCmOnhXH"
		},
		msgtype: "m.image",
		url: "mxc://privacytools.io/khPaFfeRyNdzlSttZraeAUre"
	},
	event_id: "$aaa:matrix.org",
	origin_server_ts: 1558470168199,
	unsigned: {
		age: 143237861
	},
	room_id: "!aaa:matrix.org"
};

describe('media', function() {
	describe('#parseEvent()', function() {
		it('event without info', function() {
			let mockEvent = JSON.parse(JSON.stringify(mockEventTemplate));
			mockEvent.content.info = null;

			checkParsedEvent(mockEvent, {
				w: 1000,
				h: 1000,
				method: 'scale'
			});
		}),
		it('event without thumbnail', function() {
			let mockEvent = JSON.parse(JSON.stringify(mockEventTemplate));
			mockEvent.content.info.thumbnail_url = null;
			mockEvent.content.info.thumbnail_info = null;
			checkParsedEvent(mockEvent, {
				w: 268,
				h: 141,
				method: 'scale'
			});
		});
		it('event without thumbnail_info', function() {
			let mockEvent = JSON.parse(JSON.stringify(mockEventTemplate));
			mockEvent.content.info.thumbnail_url = null;
			checkParsedEvent(mockEvent, {
				w: 268,
				h: 141,
				method: 'scale'
			});
		});
	});
});

function checkParsedEvent(mockEvent, expected) {
	let media = mediaLib.parseEvent(client, mockEvent, 1000, 1000);
	let params = querystring.decode(urllib.parse(media.thumb).query);

	Object.keys(params).forEach((key) => {
		assert.equal(expected[key], params[key]);
	});
}