var username;
var postid;

function QuoteJump(event, post) {
	var button = event.button;
	var hash = "#post" + post;
	if (button == 0) {
		if ($(hash).raw() != null) {
			window.location.hash = hash;
		} else {
			window.open("forums.php?action=viewthread&postid="+post, '_self');
		}
	} else if (button == 1) {
		window.open("forums.php?action=viewthread&postid="+post, '_window');
	}
}

function Quote(post, user) {
	Quote(post, user, false)
}

function Quote(post, user, link) {
	username = user;
	postid = post;
	ajax.get("?action=get_post&post=" + postid, function(response) {
		if ($('#quickpost').raw().value !== '') {
			$('#quickpost').raw().value = $('#quickpost').raw().value + "\n\n";
		}
		$('#quickpost').raw().value = $('#quickpost').raw().value + "[quote=" + username + (link == true ? "|" + post : "") + "]" +
			//response.replace(/(img|aud)(\]|=)/ig,'url$2').replace(/\[url\=(https?:\/\/[^\s\[\]<>"\'()]+?)\]\[url\](.+?)\[\/url\]\[\/url\]/gi, "[url]$1[/url]")
			html_entity_decode(response)
		+ "[/quote]";
		resize('quickpost');
	});
}

function Edit_Form(post,key) {
	postid = post;
	//If no edit is already going underway or a previous edit was finished, make the necessary dom changes.
	if (!$('#editbox' + postid).results() || $('#editbox' + postid + '.hidden').results()) {
		$('#reply_box').ghide();
		if (location.href.match(/torrents\.php/) ||
				location.href.match(/artist\.php/)) {
			boxWidth = "50";
		} else {
			boxWidth = "80";
		}
		postuserid = $('#post' + postid + ' strong a').attr('href').split('=')[1];
		if (postuserid != userid) {
			pmbox = '<span id="pmbox' + postid + '"><label>PM user on edit? <input type="checkbox" name="pm" value="1" /></label></span>';
		} else {
			pmbox = '';
		};
		$('#bar' + postid).raw().cancel = $('#content' + postid).raw().innerHTML;
		$('#bar' + postid).raw().oldbar = $('#bar' + postid).raw().innerHTML;
		$('#content' + postid).raw().innerHTML = "<div id=\"preview" + postid + "\"></div><form id=\"form" + postid + "\" method=\"post\" action=\"\">" + pmbox + "<input type=\"hidden\" name=\"auth\" value=\"" + authkey + "\" /><input type=\"hidden\" name=\"key\" value=\"" + key + "\" /><input type=\"hidden\" name=\"post\" value=\"" + postid + "\" /><textarea id=\"editbox" + postid + "\" onkeyup=\"resize('editbox" + postid + "');\" name=\"body\" cols=\"" + boxWidth + "\" rows=\"10\"></textarea></form>";
		$('#bar' + postid).raw().innerHTML = '<input type="button" value="Preview" onclick="Preview_Edit(' + postid + ');" /><input type="button" value="Post" onclick="Save_Edit(' + postid + ')" /><input type="button" value="Cancel" onclick="Cancel_Edit(' + postid + ');" />';
	}
	/* If it's the initial edit, fetch the post content to be edited.
	 * If editing is already underway and edit is pressed again, reset the post
	 * (keeps current functionality, move into brackets to stop from happening).
	 */
	ajax.get("?action=get_post&post=" + postid, function(response) {
		$('#editbox' + postid).raw().value = html_entity_decode(response);
		resize('editbox' + postid);
	});
}

function Cancel_Edit(postid) {
	var answer = confirm("Are you sure you want to cancel?");
	if (answer) {
		$('#reply_box').gshow();
		$('#bar' + postid).raw().innerHTML = $('#bar' + postid).raw().oldbar;
		$('#content' + postid).raw().innerHTML = $('#bar' + postid).raw().cancel;
	}
}

function Preview_Edit(postid) {
	$('#bar' + postid).raw().innerHTML = "<input type=\"button\" value=\"Editor\" onclick=\"Cancel_Preview(" + postid + ");\" /><input type=\"button\" value=\"Post\" onclick=\"Save_Edit(" + postid + ")\" /><input type=\"button\" value=\"Cancel\" onclick=\"Cancel_Edit(" + postid + ");\" />";
	ajax.post("ajax.php?action=preview","form" + postid, function(response) {
		$('#preview' + postid).raw().innerHTML = response;
		$('#editbox' + postid).ghide();
	});
}

function Cancel_Preview(postid) {
	$('#bar' + postid).raw().innerHTML = "<input type=\"button\" value=\"Preview\" onclick=\"Preview_Edit(" + postid + ");\" /><input type=\"button\" value=\"Post\" onclick=\"Save_Edit(" + postid + ")\" /><input type=\"button\" value=\"Cancel\" onclick=\"Cancel_Edit(" + postid + ");\" />";
	$('#preview' + postid).raw().innerHTML = "";
	$('#editbox' + postid).gshow();
}

function Save_Edit(postid) {
	$('#reply_box').gshow();
	if (location.href.match(/forums\.php/)) {
		ajax.post("forums.php?action=takeedit","form" + postid, function (response) {
			$('#bar' + postid).raw().innerHTML = "<a href=\"reports.php?action=report&amp;type=post&amp;id="+postid+"\" class=\"brackets\">Report</a>&nbsp;<a href=\"#\">&uarr;</a>";
			$('#preview' + postid).raw().innerHTML = response;
			$('#editbox' + postid).ghide();
			$('#pmbox' + postid).ghide();
		});
	} else if (location.href.match(/collages?\.php/)) {
		ajax.post("collages.php?action=takeedit_comment","form" + postid, function (response) {
			$('#bar' + postid).raw().innerHTML = "";
			$('#preview' + postid).raw().innerHTML = response;
			$('#editbox' + postid).ghide();
		});
	} else if (location.href.match(/requests\.php/)) {
		ajax.post("requests.php?action=takeedit_comment","form" + postid, function (response) {
			$('#bar' + postid).raw().innerHTML = "";
			$('#preview' + postid).raw().innerHTML = response;
			$('#editbox' + postid).ghide();
		});
	} else if (location.href.match(/artist\.php/)) {
		ajax.post("artist.php?action=takeedit_post","form" + postid, function (response) {
			$('#bar' + postid).raw().innerHTML = "";
			$('#preview' + postid).raw().innerHTML = response;
			$('#editbox' + postid).ghide();
		});
	} else {
		ajax.post("torrents.php?action=takeedit_post","form" + postid, function (response) {
			$('#bar' + postid).raw().innerHTML = "";
			$('#preview' + postid).raw().innerHTML = response;
			$('#editbox' + postid).ghide();
		});
	}
}

function Delete(post) {
	postid = post;
	if (confirm('Are you sure you wish to delete this post?') == true) {
		if (location.href.match(/forums\.php/)) {
			ajax.get("forums.php?action=delete&auth=" + authkey + "&postid=" + postid, function () {
				$('#post' + postid).ghide();
			});
		} else if (location.href.match(/collages?\.php/)) {
			ajax.get("collages.php?action=delete_comment&auth=" + authkey + "&postid=" + postid, function () {
				$('#post' + postid).ghide();
			});
		} else if (location.href.match(/requests\.php/)) {
			ajax.get("requests.php?action=delete_comment&auth=" + authkey + "&postid=" + postid, function () {
				$('#post' + postid).ghide();
			});
		} else if (location.href.match(/artist\.php/)) {
			ajax.get("artist.php?action=delete_comment&auth="+authkey+ "&postid=" + postid, function () {
				$('#post' + postid).ghide();
			});
		} else {
			ajax.get("torrents.php?action=delete_post&auth=" + authkey + "&postid=" + postid, function () {
				$('#post' + postid).ghide();
			});
		}
	}
}

function Quick_Preview() {
	var quickreplybuttons;
	$('#post_preview').raw().value = "Make changes";
	$('#post_preview').raw().preview = true;
	ajax.post("ajax.php?action=preview", "quickpostform", function(response) {
		$('#quickreplypreview').gshow();
		$('#contentpreview').raw().innerHTML = response;
		$('#quickreplytext').ghide();
	});
}

function Quick_Edit() {
	var quickreplybuttons;
	$('#post_preview').raw().value = "Preview";
	$('#post_preview').raw().preview = false;
	$('#quickreplypreview').ghide();
	$('#quickreplytext').gshow();
}

function Newthread_Preview(mode) {
	$('#newthreadpreviewbutton').gtoggle();
	$('#newthreadeditbutton').gtoggle();
	if (mode) { // Preview
		ajax.post("ajax.php?action=preview", "newthreadform", function(response) {
			$('#contentpreview').raw().innerHTML = response;
		});
		$('#newthreadtitle').raw().innerHTML = $('#title').raw().value;
		var pollanswers = $('#answer_block').raw();
		if (pollanswers && pollanswers.children.length > 4) {
			pollanswers = pollanswers.children;
			$('#pollquestion').raw().innerHTML = $('#pollquestionfield').raw().value;
			for (var i = 0; i < pollanswers.length; i += 2) {
				if (!pollanswers[i].value) {
					continue;
				}
				var el = document.createElement('input');
				el.id = 'answer_' + (i + 1);
				el.type = 'radio';
				el.name = 'vote';
				$('#pollanswers').raw().appendChild(el);
				$('#pollanswers').raw().appendChild(document.createTextNode(' '));
				el = document.createElement('label');
				el.htmlFor = 'answer_' + (i + 1);
				el.innerHTML = pollanswers[i].value;
				$('#pollanswers').raw().appendChild(el);
				$('#pollanswers').raw().appendChild(document.createElement('br'));
			}
			if ($('#pollanswers').raw().children.length > 4) {
				$('#pollpreview').gshow();
			}
		}
	} else { // Back to editor
		$('#pollpreview').ghide();
		$('#newthreadtitle').raw().innerHTML = 'New Topic';
		var pollanswers = $('#pollanswers').raw();
		if (pollanswers) {
			var el = document.createElement('div');
			el.id = 'pollanswers';
			pollanswers.parentNode.replaceChild(el, pollanswers);
		}
	}
	$('#newthreadtext').gtoggle();
	$('#newthreadpreview').gtoggle();
	$('#subscribediv').gtoggle();
}

function LoadEdit(type, post, depth) {
	ajax.get("forums.php?action=ajax_get_edit&postid=" + post + "&depth=" + depth + "&type=" + type, function(response) {
			$('#content' + post).raw().innerHTML = response;
		}
	);
}

function AddPollOption(id) {
	var list = $('#poll_options').raw();
	var item = document.createElement("li");
		var form = document.createElement("form");
		form.method = "POST";
			var auth = document.createElement("input");
			auth.type = "hidden";
			auth.name = "auth";
			auth.value = authkey;
			form.appendChild(auth);

			var action = document.createElement("input");
			action.type = "hidden";
			action.name = "action";
			action.value = "add_poll_option";
			form.appendChild(action);

			var threadid = document.createElement("input");
			threadid.type = "hidden";
			threadid.name = "threadid";
			threadid.value = id;
			form.appendChild(threadid);

			var input = document.createElement("input");
			input.type = "text";
			input.name = "new_option";
			input.size = "50";
			form.appendChild(input);

			var submit = document.createElement("input");
			submit.type = "submit";
			submit.id = "new_submit";
			submit.value = "Add";
			form.appendChild(submit);
		item.appendChild(form);
	list.appendChild(item);
}

/**
 * HTML5-compatible storage system
 * Tries to use 'oninput' event to detect text changes and sessionStorage to save it.
 *
 * new StoreText('some_textarea_id', 'some_form_id', 'some_topic_id')
 * The form is required to remove the stored text once it is submitted.
 *
 * Topic ID is required to retrieve the right text on the right topic
 **/
function StoreText (field, form, topic) {
	this.field = document.getElementById(field);
	this.form = document.getElementById(form);
	this.key = 'auto_save_temp';
	this.keyID = 'auto_save_temp_id';
	this.topic = +topic;
	this.load();
}
StoreText.prototype = {
	constructor : StoreText,
	load : function () {
		if (this.enabled() && this.valid()) {
			this.retrieve();
			this.autosave();
			this.clearForm();
		}
	},
	valid : function () {
		return this.field && this.form && !isNaN(this.topic);
	},
	enabled : function () {
		return window.sessionStorage && typeof window.sessionStorage === 'object';
	},
	retrieve : function () {
		var r = sessionStorage.getItem(this.key);
		if (this.topic === +sessionStorage.getItem(this.keyID) && r) {
			this.field.value = r;
		}
	},
	remove : function () {
		sessionStorage.removeItem(this.keyID);
		sessionStorage.removeItem(this.key);
	},
	save : function () {
		sessionStorage.setItem(this.keyID, this.topic);
		sessionStorage.setItem(this.key, this.field.value);
	},
	autosave : function () {
		$(this.field).on(this.getInputEvent(), $.proxy(this.save, this));
	},
	getInputEvent : function () {
		var e;
		if ('oninput' in this.field) {
			e = 'input';
		} else if (document.body.addEventListener) {
			e = 'change keyup paste cut';
		} else {
			e = 'propertychange';
		}
		return e;
	},
	clearForm : function () {
		$(this.form).submit($.proxy(this.remove, this));
	}
};