/**
 * Copyright (c) 2011, Robin Appelman <icewind1991@gmail.com>
 * This file is licensed under the Affero General Public License version 3 or later.
 * See the COPYING-README file.
 */

var UserList={
	useUndo:true,
	
	/**
	 * @brief Initiate user deletion process in UI
	 * @param string uid the user ID to be deleted
	 *
	 * Does not actually delete the user; it sets them for
	 * deletion when the current page is unloaded, at which point 
	 * finishDelete() completes the process. This allows for 'undo'.
	 */
	do_delete:function( uid ) {
		if (typeof UserList.deleteUid !== 'undefined') {
			//Already a user in the undo queue
			UserList.finishDelete(null);
		}
		UserList.deleteUid = uid;
		
		// Set undo flag
		UserList.deleteCanceled = false;
		
		// Provide user with option to undo
		$('#notification').html(t('settings', 'deleted')+' '+uid+'<span class="undo">'+t('settings', 'undo')+'</span>');
		$('#notification').data('deleteuser',true);
		$('#notification').fadeIn();
	},
	
	/**
	 * @brief Delete a user via ajax
	 * @param bool ready whether to use ready() upon completion
	 *
	 * Executes deletion via ajax of user identified by property deleteUid 
	 * if 'undo' has not been used.  Completes the user deletion procedure 
	 * and reflects success in UI.
	 */
	finishDelete:function( ready ){
		
		// Check deletion has not been undone
		if( !UserList.deleteCanceled && UserList.deleteUid ){
			
			// Delete user via ajax
			$.ajax({
				type: 'POST',
				url: OC.filePath('settings', 'ajax', 'removeuser.php'),
				async: false,
				data: { username: UserList.deleteUid },
				success: function(result) {
					if (result.status == 'success') {
						// Remove undo option, & remove user from table
						$('#notification').fadeOut();
						$('tr').filterAttr('data-uid', UserList.deleteUid).remove();
						UserList.deleteCanceled = true;
						if (ready) {
							ready();
						}
					} else {
						oc.dialogs.alert(result.data.message, t('settings', 'Unable to remove user'));
					}
				}
			});
 		}
	},

	add:function(username, groups, subadmin, quota, sort) {
		var tr = $('tbody tr').first().clone();
		tr.attr('data-uid', username);
		tr.find('td.name').text(username);
		var groupsSelect = $('<select multiple="multiple" class="groupsselect" data-placehoder="Groups" title="' + t('settings', 'Groups') + '"></select>').attr('data-username', username).attr('data-user-groups', groups);
		tr.find('td.groups').empty();
		if (tr.find('td.subadmins').length > 0) {
			var subadminSelect = $('<select multiple="multiple" class="subadminsselect" data-placehoder="subadmins" title="' + t('settings', 'Group Admin') + '">').attr('data-username', username).attr('data-user-groups', groups).attr('data-subadmin', subadmin);
			tr.find('td.subadmins').empty();
		}
		var allGroups = String($('#content table').attr('data-groups')).split(', ');
		$.each(allGroups, function(i, group) {
			groupsSelect.append($('<option value="'+escapeHTML(group)+'">'+escapeHTML(group)+'</option>'));
			if (typeof subadminSelect !== 'undefined' && group != 'admin') {
				subadminSelect.append($('<option value="'+escapeHTML(group)+'">'+escapeHTML(group)+'</option>'));
			}
		});
		tr.find('td.groups').append(groupsSelect);
		UserList.applyMultiplySelect(groupsSelect);
		if (tr.find('td.subadmins').length > 0) {
			tr.find('td.subadmins').append(subadminSelect);
			UserList.applyMultiplySelect(subadminSelect);
		}
		if (tr.find('td.remove img').length == 0 && OC.currentUser != username) {
			var rm_img = $('<img>', {
				class: 'svg action',
				src: OC.imagePath('core','actions/delete'),
				alt: t('settings','Delete'),
				title: t('settings','Delete')
			});
			var rm_link = $('<a>', { class: 'action delete', href: '#'}).append(rm_img);
			tr.find('td.remove').append(rm_link);
		} else if (OC.currentUser == username) {
			tr.find('td.remove a').remove();
		}
		var quotaSelect = tr.find('select.quota-user');
		if (quota == 'default') {
			quotaSelect.find('option').attr('selected', null);
			quotaSelect.find('option').first().attr('selected', 'selected');
			quotaSelect.data('previous', 'default');
		} else {
			if (quotaSelect.find('option[value="'+quota+'"]').length > 0) {
				quotaSelect.find('option[value="'+quota+'"]').attr('selected', 'selected');
			} else {
				quotaSelect.append('<option value="'+escapeHTML(quota)+'" selected="selected">'+escapeHTML(quota)+'</option>');
			}
		}
		var added = false;
		if (sort) {
			username = username.toLowerCase();
			$('tbody tr').each(function() {
				if (username < $(this).attr('data-uid').toLowerCase()) {
					$(tr).insertBefore($(this));
					added = true;
					return false;
				}
			});
		} 
		if (!added) {
			$(tr).appendTo('tbody');
		}
		return tr;
	},

	update:function() {
		if (typeof UserList.offset === 'undefined') {
			UserList.offset = $('tbody tr').length;
		}
		$.get(OC.filePath('settings', 'ajax', 'userlist.php'), { offset: UserList.offset }, function(result) {
			if (result.status === 'success') {
				$.each(result.data, function(index, user) {
					var tr = UserList.add(user.name, user.groups, user.subadmin, user.quota, false);
					UserList.offset++;
					if (index == 9) {
						$(tr).bind('inview', function(event, isInView, visiblePartX, visiblePartY) {
							$(this).unbind(event);
							UserList.update();
						});
					}
				});
			}
		});
	},

	applyMultiplySelect:function(element) {
		var checked=[];
		var user=element.attr('data-username');
		if($(element).attr('class') == 'groupsselect'){
			if(element.data('userGroups')){
				checked=String(element.data('userGroups')).split(', ');
			}
			if(user){
				var checkHandeler=function(group){
					if(user==OC.currentUser && group=='admin'){
						return false;
					}
					if(!isadmin && checked.length == 1 && checked[0] == group){
						return false;
					}
					$.post(
						OC.filePath('settings','ajax','togglegroups.php'),
						{
							username:user,
							group:group
						},
						function(){}
					);
				};
			}else{
				checkHandeler=false;
			}
			var addGroup = function(group) {
				$('select[multiple]').each(function(index, element) {
					if ($(element).find('option[value="'+group +'"]').length == 0) {
						$(element).append('<option value="' + escapeHTML(group) + '">' + escapeHTML(group) + '</option>');
					}
				})
			};
			var label;
			if(isadmin){
				label = t('settings', 'add group');
			}else{
				label = null;
			}
			element.multiSelect({
				createCallback:addGroup,
				createText:label,
				checked:checked,
				oncheck:checkHandeler,
				onuncheck:checkHandeler,
				minWidth: 100,
			});
		}
		if($(element).attr('class') == 'subadminsselect'){
			if(element.data('subadmin')){
				checked=String(element.data('subadmin')).split(', ');
			}
			var checkHandeler=function(group){
				if(group=='admin'){
					return false;
				}
				$.post(
					OC.filePath('settings','ajax','togglesubadmins.php'),
					{
						username:user,
						group:group
					},
					function(){}
				);
			};
			
			var addSubAdmin = function(group) {
				$('select[multiple]').each(function(index, element) {
					if ($(element).find('option[value="'+group +'"]').length == 0) {
						$(element).append('<option value="'+escapeHTML(group)+'">'+escapeHTML(group)+'</option>');
					}
				})
			};
			element.multiSelect({
				createCallback:addSubAdmin,
				createText:null,
				checked:checked,
				oncheck:checkHandeler,
				onuncheck:checkHandeler,
				minWidth: 100,
			});
		}
	}
}

$(document).ready(function(){

	$('tbody tr:last').bind('inview', function(event, isInView, visiblePartX, visiblePartY) {
		UserList.update();
	});

	function setQuota(uid,quota,ready){
		$.post(
			OC.filePath('settings','ajax','setquota.php'),
			{username:uid,quota:quota},
			function(result){
				if(ready){
					ready(result.data.quota);
				}
			}
		);
	}
	
	
	$('select[multiple]').each(function(index,element){
		UserList.applyMultiplySelect($(element));
	});
	
	$('td.remove>a').live('click',function(event){
		var row = $(this).parent().parent();
		var uid = $(row).attr('data-uid');
		$(row).hide();
		// Call function for handling delete/undo
		UserList.do_delete(uid);
	});
	
	$('td.password>img').live('click',function(event){
		event.stopPropagation();
		var img=$(this);
		var uid=img.parent().parent().attr('data-uid');
		var input=$('<input type="password">');
		img.css('display','none');
		img.parent().children('span').replaceWith(input);
		input.focus();
		input.keypress(function(event) {
			if(event.keyCode == 13) {
				if($(this).val().length>0){
					$.post(
						OC.filePath('settings','ajax','changepassword.php'),
						{username:uid,password:$(this).val()},
						function(result){}
					);
					input.blur();
				}else{
					input.blur();
				}
			}
		});
		input.blur(function(){
			$(this).replaceWith($('<span>●●●●●●●</span>'));
			img.css('display','');
		});
	});
	$('td.password').live('click',function(event){
		$(this).children('img').click();
	});
	
	$('select.quota, select.quota-user').live('change',function(){
		var select=$(this);
		var uid=$(this).parent().parent().parent().attr('data-uid');
		var quota=$(this).val();
		var other=$(this).next();
		if(quota!='other'){
			other.hide();
			select.data('previous',quota);
			setQuota(uid,quota);
		}else{
			other.show();
			select.addClass('active');
			other.focus();
		}
	});
	$('select.quota, select.quota-user').each(function(i,select){
		$(select).data('previous',$(select).val());
	})
	
	$('input.quota-other').live('change',function(){
		var uid=$(this).parent().parent().parent().attr('data-uid');
		var quota=$(this).val();
		var select=$(this).prev();
		var other=$(this);
		if(quota){
			setQuota(uid,quota,function(quota){
				select.children().attr('selected',null);
				var existingOption=select.children().filter(function(i,option){
					return ($(option).val()==quota);
				});
				if(existingOption.length){
					existingOption.attr('selected','selected');
				}else{
					var option=$('<option/>');
					option.attr('selected','selected').attr('value',quota).text(quota);
					select.children().last().before(option);
				}
				select.val(quota);
				select.removeClass('active');
				other.val(null);
				other.hide();
			});
		}else{
			var previous=select.data('previous');
			select.children().attr('selected',null);
			select.children().each(function(i,option){
				if($(option).val()==previous){
					$(option).attr('selected','selected');
				}
			});
			select.removeClass('active');
			other.hide();
		}
	});
	
	$('input.quota-other').live('blur',function(){
		$(this).change();
	})
	
	$('#newuser').submit(function(event){
		event.preventDefault();
		var username=$('#newusername').val();
		var password=$('#newuserpassword').val();
		if($('#content table tbody tr').filterAttr('data-uid',username).length>0){
			OC.dialogs.alert(
                t('settings', 'The username is already being used'),
                t('settings', 'Error creating user'));
			return;
		}
		if($.trim(username) == '') {
			OC.dialogs.alert(
                t('settings', 'A valid username must be provided'),
                t('settings', 'Error creating user'));
			return false;
		}
		if($.trim(password) == '') {
			OC.dialogs.alert(
                t('settings', 'A valid password must be provided'),
                t('settings', 'Error creating user'));
			return false;
		}
		var groups=$('#newusergroups').prev().children('div').data('settings').checked;
		$('#newuser').get(0).reset();
		$.post(
			OC.filePath('settings','ajax','createuser.php'),
			{
				username:username,
				password:password,
				groups:groups,
			},
			function(result){
				if(result.status!='success'){
					OC.dialogs.alert(result.data.message, 'Error creating user');
				} else {
					UserList.add(username, result.data.groups, null, 'default', true);
				}
			}
		);
	});
	// Handle undo notifications
	$('#notification').hide();
	$('#notification .undo').live('click', function() {
		if($('#notification').data('deleteuser')) {
			$('tbody tr').filterAttr('data-uid', UserList.deleteUid).show();
			UserList.deleteCanceled=true;
		}
		$('#notification').fadeOut();
	});
	UserList.useUndo=('onbeforeunload' in window)
	$(window).bind('beforeunload', function (){
		UserList.finishDelete(null);
	});
});
