// tumblrBadge by Robert Nyman, http://www.robertnyman.com/, http://code.google.com/p/tumblrbadge/
// edited by bcardoso [http://verbeatblogs.org/navalha/2008/10/random-post-tumblr-widget.html] to show ONLY image posts; follow the links above for the original version.

(function () {
	// User settings
	var settings = {
		userName : "dirty-boots", // Your Tumblr user name
		itemsToShow : 6, // Number of Tumblr photos to retrieve
		itemToAddBadgeTo : "tumblr-photos", // Id of HTML element to put badge code into
		imageSize : 75, // Values can be 75, 100, 250, 400 or 500
		shortPublishDate : true, // Whether the publishing date should be cut shorter
		timeToWait : 6660 // Milliseconds, 1000 = 1 second
	};
	
	// Badge functionality
	var head = document.getElementsByTagName("head")[0];
	var badgeContainer = document.getElementById(settings.itemToAddBadgeTo);
	if (head && badgeContainer) {
		var badgeJSON = document.createElement("script");
		badgeJSON.type = "text/javascript";
		badgeJSON.src = "http://" + settings.userName + ".tumblr.com/api/read/json?num=" + settings.itemsToShow + "&type=photo";
		head.appendChild(badgeJSON);
		
		var wait = setTimeout(function () {
			badgeJSON.onload = null;
			badgeJSON.parentNode.removeChild(badgeJSON);
			badgeJSON = null;
		}, settings.timeToWait);
		
		badgeJSON.onload = function () {
			var posts = tumblr_api_read.posts;
			var list = document.createElement("ul"), 
				listItem, 
				link, 
				img, 
				postLink;
			list.className = "tumblr";
			for (var i=0, il=posts.length; i<il; i=i+1) {
				post = posts[i];

				// Only get content for photo
				if (/photo/.test(post.type)) {
					listItem = document.createElement("li");
					if (post.type === "photo") {
						link = document.createElement("a");
						link.href = post.url;
						img = document.createElement("img");
						// To avoid a creeping page
						img.width = settings.imageSize;
						img.src = post["photo-url-" + settings.imageSize];
						link.appendChild(img);
						listItem.appendChild(link);
					}

					// Create a link to Tumblr post
					postLink = document.createElement("a");
					postLink.href = post.url;

					// Apply list item to list
					list.appendChild(listItem);
				}
			}
			
			// Apply list to container element
			badgeContainer.innerHTML = "";
			badgeContainer.appendChild(list);
		}
	}
}());