// ==UserScript==
// @name			Andrew's Tagged Photos Downloader
// @include			https://www.facebook.com/*/allactivity?privacy_source=activity_log&log_filter=cluster_200
// @require			http://code.jquery.com/jquery-1.7.1.min.js
// @grant			none
// @version			1.0
// @description		Download all photos that you are tagged in.
// @namespace https://greasyfork.org/users/36399
// @downloadURL none
// ==/UserScript==

/*
 * For jQuery Conflicts.
 */
this.$ = this.jQuery = jQuery.noConflict(true);

// Variables
var fbname = document.title;
var inited = false;
var firstrun = false;
var retry = 0;
var retries = 10;
var activityheight = 0;

// Inject buttons into page
$(document).ready(function() {
    $('#pagelet_main_column_personal div [class="_2o3t fixed_elem"] div[class="clearfix uiHeaderTop"]').append('<input type="button" id="andrewfbdl" value="Download Photos">');
    $('#andrewfbdl').click(triggerdl);
});
jQuery.fn.simulateClick = function() {
    return this.each(function() {
        if('createEvent' in document) {
            var doc = this.ownerDocument,
                evt = doc.createEvent('MouseEvents');
            evt.initMouseEvent('click', true, true, doc.defaultView, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
            this.dispatchEvent(evt);
        } else {
            this.click();
        }
    });
};
function triggerdl() {
	if (confirm('Are you sure you wish to continue? Chrome may tell you that this page is attempting to download multiple files: please click on Allow.')) {
		inited = false;
		firstrun = false;
		retry = 0;
		andrewhandler();
	}
}

// Behold: the master function.
function andrewhandler() {
    if (!inited) {
		activityheight = 0;
        console.log('> Activate all years and months...');
		// Tickle all the years and months to make sure all activity data are loaded
        $("div#rightColContent ul.fbTimelineLogScrubber li a").each(function() {
           $(this).simulateClick('click');
        });
        inited = true;
        var checkFinish = setInterval(function() {
			// Kind of primitive, but check the height of the activity log box every 5 seconds. If it remains the same after 5 seconds, we assume all data has finished loading.
			if ($("#fbTimelineLogBody").height() != activityheight) {
				activityheight = $("#fbTimelineLogBody").height();
			} else {
				console.log('> Finished loading all data! Proceeding to download photos...');
				clearInterval(checkFinish);
				andrewhandler();
			}
		}, 5000);
    } else {
        if (!firstrun) {
            scrollTo(0, 0);
            firstrun = true;
        }
		if (retry < retries) {
			if (!$("#fbTimelineLogBody div._5shk:not(.fbprocessed)").length) {
				if ($("#fbTimelineLogBody a.uiMorePagerPrimary").length) {
					$("#fbTimelineLogBody a.uiMorePagerPrimary").each(function() {
					   $(this).simulateClick('click');
					});
					retry = 0;
					console.log($("#fbTimelineLogBody a.uiMorePagerPrimary").length+" More Activity Links Exist");
					setTimeout(function() { andrewhandler(); }, 500);
					return;
				}
				setTimeout(function() { andrewhandler(); }, 500);
				retry++;
				console.log('Seems to be done. '+retry+'/'+retries);
			} else {
				retry = 0;
				contents = $("#fbTimelineLogBody div._5shk:not(.fbprocessed):first div._42ef").text();
				if (contents.indexOf(fbname+' was tagged in') != -1 && contents.indexOf(' photo.') != -1) {
					dlphoto();
				} else {
					//console.log('> Not a relevant activity, skipping.');
					$("#fbTimelineLogBody div._5shk:not(.fbprocessed):first").addClass('fbprocessed');
					andrewhandler();
				}
			}
		} else {
			alert('Done!');
		}
    }
}

function dlphoto() {
    code = $("#fbTimelineLogBody div._5shk:not(.fbprocessed):first td._5ep6 a").attr('href');
	regexp = /\?fbid=([0-9]+)&/g;
	match = regexp.exec(code);
	if (match[1]) $("body").append("<iframe src='https://www.facebook.com/photo/download/?fbid="+match[1]+"'></iframe>");
    $("#fbTimelineLogBody div._5shk:not(.fbprocessed):first").addClass('fbprocessed');
    setTimeout(andrewhandler, 1500);
}