/**
 * @name		Photo Module
 * @description	Takes care of every action a photo can handle and execute.
 * @author		Tobias Reich
 * @copyright	2014 by Tobias Reich
 */

photo = {

	json: null,
	cache: null,

	getID: function() {

		var id;

		if (photo.json) id = photo.json.id;
		else id = $(".photo:hover, .photo.active").attr("data-id");

		if (id) return id;
		else return false;

	},

	load: function(photoID, albumID) {

		var params,
			checkPasswd;

		params = "getPhoto&photoID=" + photoID + "&albumID=" + albumID + "&password=" + password.value;
		lychee.api(params, function(data) {

			if (data==="Warning: Wrong password!") {
				checkPasswd = function() {
					if (password.value!=="") photo.load(photoID, albumID);
					else setTimeout(checkPasswd, 250);
				};
				checkPasswd();
				return false;
			}

			photo.json = data;
			if (!visible.photo()) view.photo.show();
			view.photo.init();

			lychee.imageview.show();
			setTimeout(function() {
				lychee.content.show();
				photo.preloadNext(photoID, albumID);
			}, 300);

		});

	},

	//preload the next photo for better response time
	preloadNext: function(photoID) {

		var nextPhoto,
			url;

		// Never preload on mobile devices with bare RAM and
		// mostly mobile internet
		if (!mobileBrowser()) return false;

		if (album.json &&
		   album.json.content &&
		   album.json.content[photoID] &&
		   album.json.content[photoID].nextPhoto!="") {

			nextPhoto	= album.json.content[photoID].nextPhoto;
			url			= album.json.content[nextPhoto].url;

			photo.cache			= new Image();
			photo.cache.src		= url;
			photo.cache.onload	= function() { photo.cache = null };

		}

	},

	parse: function() {

		if (!photo.json.title) photo.json.title = "Untitled";

	},

	previous: function(animate) {

		var delay = 0;

		if (photo.getID()!==false&&
			album.json&&
			album.json.content[photo.getID()]&&
			album.json.content[photo.getID()].previousPhoto!=="") {

				if (animate===true) {

					delay = 200;

					$("#image").css({
						WebkitTransform: 'translateX(100%)',
						MozTransform: 'translateX(100%)',
						transform: 'translateX(100%)',
						opacity: 0
					});

				}

				setTimeout(function() {
					if (photo.getID()===false) return false;
					lychee.goto(album.getID() + "/" + album.json.content[photo.getID()].previousPhoto)
				}, delay);

			}

	},

	next: function(animate) {

		var delay = 0;

		if (photo.getID()!==false&&
			album.json&&
			album.json.content[photo.getID()]&&
			album.json.content[photo.getID()].nextPhoto!=="") {

				if (animate===true) {

					delay = 200;

					$("#image").css({
						WebkitTransform: 'translateX(-100%)',
						MozTransform: 'translateX(-100%)',
						transform: 'translateX(-100%)',
						opacity: 0
					});

				}

				setTimeout(function() {
					if (photo.getID()===false) return false;
					lychee.goto(album.getID() + "/" + album.json.content[photo.getID()].nextPhoto);
				}, delay);

			}

	},

	duplicate: function(photoIDs) {

		var params;

		if (!photoIDs) return false;
		if (photoIDs instanceof Array===false) photoIDs = [photoIDs];

		albums.refresh();

		params = "duplicatePhoto&photoIDs=" + photoIDs;
		lychee.api(params, function(data) {

			if (data!==true) lychee.error(null, params, data);
			else album.load(album.getID(), false);

		});

	},

	delete: function(photoIDs) {

		var params,
			buttons,
			photoTitle;

		if (!photoIDs) return false;
		if (photoIDs instanceof Array===false) photoIDs = [photoIDs];

		if (photoIDs.length===1) {
			// Get title if only one photo is selected
			if (visible.photo()) photoTitle = photo.json.title;
			else photoTitle = album.json.content[photoIDs].title;
			if (photoTitle==="") photoTitle = "Untitled";
		}

		buttons = [
			["", function() {

				var nextPhoto,
					previousPhoto;

				photoIDs.forEach(function(id, index, array) {

					// Change reference for the next and previous photo
					if (album.json.content[id].nextPhoto!==""||album.json.content[id].previousPhoto!=="") {

						nextPhoto = album.json.content[id].nextPhoto;
						previousPhoto = album.json.content[id].previousPhoto;

						album.json.content[previousPhoto].nextPhoto = nextPhoto;
						album.json.content[nextPhoto].previousPhoto = previousPhoto;

					}

					album.json.content[id] = null;
					view.album.content.delete(id);

				});

				// Only when search is not active
				if (!visible.albums()) lychee.goto(album.getID());

				albums.refresh();

				params = "deletePhoto&photoIDs=" + photoIDs;
				lychee.api(params, function(data) {

					if (data!==true) lychee.error(null, params, data);

				});

			}],
			["", function() {}]
		];

		if (photoIDs.length===1) {

			buttons[0][0] = "Delete Photo";
			buttons[1][0] = "Keep Photo";

			modal.show("Delete Photo", "Are you sure you want to delete the photo '" + photoTitle + "'?<br>This action can't be undone!", buttons);

		} else {

			buttons[0][0] = "Delete Photos";
			buttons[1][0] = "Keep Photos";

			modal.show("Delete Photos", "Are you sure you want to delete all " + photoIDs.length + " selected photo?<br>This action can't be undone!", buttons);

		}

	},

	setTitle: function(photoIDs) {

		var oldTitle = "",
			newTitle,
			params,
			buttons;

		if (!photoIDs) return false;
		if (photoIDs instanceof Array===false) photoIDs = [photoIDs];

		if (photoIDs.length===1) {
			// Get old title if only one photo is selected
			if (photo.json) oldTitle = photo.json.title;
			else if (album.json) oldTitle = album.json.content[photoIDs].title;
			oldTitle = oldTitle.replace("'", "&apos;");
		}

		buttons = [
			["Set Title", function() {

				// Get input
				newTitle = $(".message input.text").val();

				// Remove html from input
				newTitle = lychee.removeHTML(newTitle);

				if (visible.photo()) {
					photo.json.title = (newTitle==="") ? "Untitled" : newTitle;
					view.photo.title();
				}

				photoIDs.forEach(function(id, index, array) {
					album.json.content[id].title = newTitle;
					view.album.content.title(id);
				});

				params = "setPhotoTitle&photoIDs=" + photoIDs + "&title=" + escape(encodeURI(newTitle));
				lychee.api(params, function(data) {

					if (data!==true) lychee.error(null, params, data);

				});

			}],
			["Cancel", function() {}]
		];

		if (photoIDs.length===1) modal.show("Set Title", "Enter a new title for this photo: <input class='text' type='text' maxlength='30' placeholder='Title' value='" + oldTitle + "'>", buttons);
		else modal.show("Set Titles", "Enter a title for all " + photoIDs.length + " selected photos: <input class='text' type='text' maxlength='30' placeholder='Title' value=''>", buttons);

	},

	setAlbum: function(photoIDs, albumID) {

		var params,
			nextPhoto,
			previousPhoto;

		if (!photoIDs) return false;
		if (visible.photo) lychee.goto(album.getID());
		if (photoIDs instanceof Array===false) photoIDs = [photoIDs];

		photoIDs.forEach(function(id, index, array) {

			// Change reference for the next and previous photo
			if (album.json.content[id].nextPhoto!==""||album.json.content[id].previousPhoto!=="") {

				nextPhoto = album.json.content[id].nextPhoto;
				previousPhoto = album.json.content[id].previousPhoto;

				album.json.content[previousPhoto].nextPhoto = nextPhoto;
				album.json.content[nextPhoto].previousPhoto = previousPhoto;

			}

			album.json.content[id] = null;
			view.album.content.delete(id);

		});

		albums.refresh();

		params = "setPhotoAlbum&photoIDs=" + photoIDs + "&albumID=" + albumID;
		lychee.api(params, function(data) {

			if (data!==true) lychee.error(null, params, data);

		});

	},

	setStar: function(photoIDs) {

		var params;

		if (!photoIDs) return false;
		if (visible.photo()) {
			photo.json.star = (photo.json.star==0) ? 1 : 0;
			view.photo.star();
		}

		photoIDs.forEach(function(id, index, array) {
			album.json.content[id].star = (album.json.content[id].star==0) ? 1 : 0;
			view.album.content.star(id);
		});

		albums.refresh();

		params = "setPhotoStar&photoIDs=" + photoIDs;
		lychee.api(params, function(data) {

			if (data!==true) lychee.error(null, params, data);

		});

	},

	setPublic: function(photoID, e) {

		var params;

		if (photo.json.public==2) {

			modal.show("Public Album", "This photo is located in a public album. To make this photo private or public, edit the visibility of the associated album.", [["Show Album", function() { lychee.goto(photo.json.original_album) }], ["Close", function() {}]]);
			return false;

		}

		if (visible.photo()) {

			photo.json.public = (photo.json.public==0) ? 1 : 0;
			view.photo.public();
			if (photo.json.public==1) contextMenu.sharePhoto(photoID, e);

		}

		album.json.content[photoID].public = (album.json.content[photoID].public==0) ? 1 : 0;
		view.album.content.public(photoID);

		albums.refresh();

		params = "setPhotoPublic&photoID=" + photoID;
		lychee.api(params, function(data) {

			if (data!==true) lychee.error(null, params, data);

		});

	},

	setDescription: function(photoID) {

		var oldDescription = photo.json.description.replace("'", "&apos;"),
			description,
			params,
			buttons;

		buttons = [
			["Set Description", function() {

				// Get input
				description = $(".message input.text").val();

				// Remove html from input
				description = lychee.removeHTML(description);

				if (visible.photo()) {
					photo.json.description = description;
					view.photo.description();
				}

				params = "setPhotoDescription&photoID=" + photoID + "&description=" + escape(encodeURI(description));
				lychee.api(params, function(data) {

					if (data!==true) lychee.error(null, params, data);

				});

			}],
			["Cancel", function() {}]
		];

		modal.show("Set Description", "Enter a description for this photo: <input class='text' type='text' maxlength='800' placeholder='Description' value='" + oldDescription + "'>", buttons);

	},

	editTags: function(photoIDs) {

		var oldTags = "",
			tags = "",
			buttons;

		if (!photoIDs) return false;
		if (photoIDs instanceof Array===false) photoIDs = [photoIDs];

		// Get tags
		if (visible.photo()) oldTags = photo.json.tags;
		if (visible.album()&&photoIDs.length===1) oldTags = album.json.content[photoIDs].tags;
		if (visible.album()&&photoIDs.length>1) {
			var same = true;
			photoIDs.forEach(function(id, index, array) {
				if(album.json.content[id].tags===album.json.content[photoIDs[0]].tags&&same===true) same = true;
				else same = false;
			});
			if (same) oldTags = album.json.content[photoIDs[0]].tags;
		}

		// Improve tags
		oldTags = oldTags.replace(/,/g, ', ');

		buttons = [
			["Set Tags", function() {

				tags = $(".message input.text").val();

				photo.setTags(photoIDs, tags);

			}],
			["Cancel", function() {}]
		];

		if (photoIDs.length===1) modal.show("Set Tags", "Enter your tags for this photo. You can add multiple tags by separating them with a comma: <input class='text' type='text' maxlength='800' placeholder='Tags' value='" + oldTags + "'>", buttons);
		else modal.show("Set Tags", "Enter your tags for all " + photoIDs.length + " selected photos. Existing tags will be overwritten. You can add multiple tags by separating them with a comma: <input class='text' type='text' maxlength='800' placeholder='Tags' value='" + oldTags + "'>", buttons);

	},

	setTags: function(photoIDs, tags) {

		var params;

		if (!photoIDs) return false;
		if (photoIDs instanceof Array===false) photoIDs = [photoIDs];

		// Parse tags
		tags = tags.replace(/(\ ,\ )|(\ ,)|(,\ )|(,{1,}\ {0,})|(,$|^,)/g, ',');
		tags = tags.replace(/,$|^,|(\ ){0,}$/g, '');

		// Remove html from input
		tags = lychee.removeHTML(tags);

		if (visible.photo()) {
			photo.json.tags = tags;
			view.photo.tags();
		}

		photoIDs.forEach(function(id, index, array) {
			album.json.content[id].tags = tags;
		});

		params = "setPhotoTags&photoIDs=" + photoIDs + "&tags=" + tags;
		lychee.api(params, function(data) {

			if (data!==true) lychee.error(null, params, data);

		});

	},

	deleteTag: function(photoID, index) {

		var tags;

		// Remove
		tags = photo.json.tags.split(',');
		tags.splice(index, 1);

		// Save
		photo.json.tags = tags.toString();
		photo.setTags([photoID], photo.json.tags);

	},

	share: function(photoID, service) {

		var link = "",
			url = photo.getViewLink(photoID),
			filename = "unknown";

		switch (service) {
			case 0:
				link = "https://twitter.com/share?url=" + encodeURI(url);
				break;
			case 1:
				link = "http://www.facebook.com/sharer.php?u=" + encodeURI(url) + "&t=" + encodeURI(photo.json.title);
				break;
			case 2:
				link = "mailto:?subject=" + encodeURI(photo.json.title) + "&body=" + encodeURI(url);
				break;
			case 3:
				lychee.loadDropbox(function() {
					filename = photo.json.title + "." + photo.getDirectLink().split('.').pop();
					Dropbox.save(photo.getDirectLink(), filename);
				});
				break;
			default:
				link = "";
				break;
		}

		if (link.length>5) location.href = link;

	},

	isSmall: function() {

		var size = {
			width: false,
			height: false
		};

		if (photo.json.width<$(window).width()-60) size.width = true;
		if (photo.json.height<$(window).height()-100) size.height = true;

		if (size.width&&size.height) return true;
		else return false;

	},

	getArchive: function(photoID) {

		var link,
			url = "php/api.php?function=getPhotoArchive&photoID=" + photoID;

		if (location.href.indexOf("index.html")>0) link = location.href.replace(location.hash, "").replace("index.html", url);
		else link = location.href.replace(location.hash, "") + url;

		if (lychee.publicMode) link += "&password=" + password.value;

		location.href = link;

	},

	getDirectLink: function() {

		return $("#imageview #image").css("background-image").replace(/"/g,"").replace(/url\(|\)$/ig, "");

	},

	getViewLink: function(photoID) {

		var url = "view.php?p=" + photoID;

		if (location.href.indexOf("index.html")>0) return location.href.replace("index.html" + location.hash, url);
		else return location.href.replace(location.hash, url);

	}

};