/**
   * 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.
   */
  
  function setQuota (uid, quota, ready) {
  	$.post(
  		OC.filePath('settings', 'ajax', 'setquota.php'),
  		{username: uid, quota: quota},
  		function (result) {
  			if (ready) {
  				ready(result.data.quota);
  			}
  		}
  	);
  }
  
  var UserList = {
  	useUndo: true,
  	availableGroups: [],
  	offset: 30, //The first 30 users are there. No prob, if less in total.
  				//hardcoded in settings/users.php
  
  	usersToLoad: 10, //So many users will be loaded when user scrolls down
  
  	/**
  	 * @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').data('deleteuser', true);

  		OC.Notification.showHtml(t('settings', 'deleted') + ' ' + escapeHTML(uid) + '<span class="undo">' + t('settings', 'undo') + '</span>');

  	},
  
  	/**
  	 * @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
  						OC.Notification.hide();
  						$('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, displayname, groups, subadmin, quota, sort) {
  		var tr = $('tbody tr').first().clone();

  		var subadminsEl;
  		var subadminSelect;
  		var groupsSelect;
  		if (tr.find('div.avatardiv').length){

  			$('div.avatardiv', tr).avatar(username, 32);
  		}

  		tr.attr('data-uid', username);
  		tr.attr('data-displayName', displayname);
  		tr.find('td.name').text(username);
  		tr.find('td.displayName > span').text(displayname);

  
  		// make them look like the multiselect buttons
  		// until they get time to really get initialized
  		groupsSelect = $('<select multiple="multiple" class="groupsselect multiselect button" data-placehoder="Groups" title="' + t('settings', 'Groups') + '"></select>')

  			.attr('data-username', username)
  			.data('user-groups', groups);

  		if (tr.find('td.subadmins').length > 0) {

  			subadminSelect = $('<select multiple="multiple" class="subadminsselect multiselect button" data-placehoder="subadmins" title="' + t('settings', 'Group Admin') + '">')

  				.attr('data-username', username)
  				.data('user-groups', groups)
  				.data('subadmin', subadmin);
  			tr.find('td.subadmins').empty();
  		}
  		$.each(this.availableGroups, function (i, group) {
  			groupsSelect.append($('<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').empty().append(groupsSelect);
  		subadminsEl = tr.find('td.subadmins');
  		if (subadminsEl.length > 0) {
  			subadminsEl.append(subadminSelect);

  		}

  		if (tr.find('td.remove img').length === 0 && OC.currentUser !== username) {

  			var rm_img = $('<img class="svg action">').attr({
  				src: OC.imagePath('core', 'actions/delete')
  			});
  			var rm_link = $('<a class="action delete">')
  				.attr({ href: '#', 'original-title': t('settings', 'Delete')})
  				.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>');
  			}
  		}
  		$(tr).appendTo('tbody');

  		if (sort) {
  			UserList.doSort();
  		}

  		quotaSelect.on('change', function () {
  			var uid = $(this).parent().parent().attr('data-uid');
  			var quota = $(this).val();

  			setQuota(uid, quota, function(returnedQuota){
  				if (quota !== returnedQuota) {
  					$(quotaSelect).find(':selected').text(returnedQuota);
  				}
  			});

  		});

  
  		// defer init so the user first sees the list appear more quickly
  		window.setTimeout(function(){
  			quotaSelect.singleSelect();
  			UserList.applyMultiplySelect(groupsSelect);
  			if (subadminSelect) {
  				UserList.applyMultiplySelect(subadminSelect);
  			}
  		}, 0);
  		return tr;

  	},
  	// From http://my.opera.com/GreyWyvern/blog/show.dml/1671288
  	alphanum: function(a, b) {
  		function chunkify(t) {
  			var tz = [], x = 0, y = -1, n = 0, i, j;
  
  			while (i = (j = t.charAt(x++)).charCodeAt(0)) {

  			var m = (i === 46 || (i >=48 && i <= 57));

  			if (m !== n) {
  				tz[++y] = "";
  				n = m;
  			}
  			tz[y] += j;
  			}
  			return tz;
  		}
  
  		var aa = chunkify(a.toLowerCase());
  		var bb = chunkify(b.toLowerCase());
  
  		for (x = 0; aa[x] && bb[x]; x++) {
  			if (aa[x] !== bb[x]) {
  			var c = Number(aa[x]), d = Number(bb[x]);

  			if (c === aa[x] && d === bb[x]) {

  				return c - d;

  			} else {
  				return (aa[x] > bb[x]) ? 1 : -1;
  			}

  			}
  		}
  		return aa.length - bb.length;
  	},
  	doSort: function() {
  		var self = this;
  		var rows = $('tbody tr').get();
  
  		rows.sort(function(a, b) {
  			return UserList.alphanum($(a).find('td.name').text(), $(b).find('td.name').text());
  		});
  
  		var items = [];
  		$.each(rows, function(index, row) {
  			items.push(row);
  			if(items.length === 100) {
  				$('tbody').append(items);
  				items = [];
  			}
  		});
  		if(items.length > 0) {
  			$('tbody').append(items);
  		}
  	},
  	update: function () {
  		if (UserList.updating) {
  			return;
  		}

  		$('table+.loading').css('visibility', 'visible');

  		UserList.updating = true;
  		$.get(OC.Router.generate('settings_ajax_userlist', { offset: UserList.offset, limit: UserList.usersToLoad }), function (result) {

  			var loadedUsers = 0;
  			var trs = [];

  			if (result.status === 'success') {
  				//The offset does not mirror the amount of users available,
  				//because it is backend-dependent. For correct retrieval,
  				//always the limit(requested amount of users) needs to be added.

  				$.each(result.data, function (index, user) {
  					if($('tr[data-uid="' + user.name + '"]').length > 0) {
  						return true;
  					}
  					var tr = UserList.add(user.name, user.displayname, user.groups, user.subadmin, user.quota, false);

  					tr.addClass('appear transparent');
  					trs.push(tr);
  					loadedUsers++;

  				});
  				if (result.data.length > 0) {
  					UserList.doSort();

  					$('table+.loading').css('visibility', 'hidden');

  				}

  				else {
  					UserList.noMoreEntries = true;
  					$('table+.loading').remove();
  				}
  				UserList.offset += loadedUsers;
  				// animate
  				setTimeout(function() {
  					for (var i = 0; i < trs.length; i++) {
  						trs[i].removeClass('transparent');
  					}
  				}, 0);

  			}
  			UserList.updating = false;
  		});
  	},
  
  	applyMultiplySelect: function (element) {
  		var checked = [];
  		var user = element.attr('data-username');

  		if ($(element).hasClass('groupsselect')) {

  			if (element.data('userGroups')) {
  				checked = element.data('userGroups');
  			}
  			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 (response) {
  							if(response.status === 'success'
  									&& UserList.availableGroups.indexOf(response.data.groupname) === -1
  									&& response.data.action === 'add') {
  								UserList.availableGroups.push(response.data.groupname);
  							}
  							if(response.data.message) {
  								OC.Notification.show(response.data.message);
  							}
  						}
  					);
  				};
  			} else {
  				checkHandeler = false;
  			}
  			var addGroup = function (select, group) {
  				$('select[multiple]').each(function (index, element) {
  					if ($(element).find('option[value="' + group + '"]').length === 0 && select.data('msid') !== $(element).data('msid')) {
  						$(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,
  				selectedFirst: true,
  				checked: checked,
  				oncheck: checkHandeler,
  				onuncheck: checkHandeler,
  				minWidth: 100
  			});
  		}

  		if ($(element).hasClass('subadminsselect')) {

  			if (element.data('subadmin')) {
  				checked = element.data('subadmin');
  			}
  			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
  			});
  		}

  	},
  
  	_onScroll: function(e) {
  		if (!!UserList.noMoreEntries) {
  			return;
  		}
  		if ($(window).scrollTop() + $(window).height() > $(document).height() - 500) {
  			UserList.update(true);
  		}
  	},

  };
  
  $(document).ready(function () {
  
  	UserList.doSort();
  	UserList.availableGroups = $('#content table').data('groups');

  	OC.Router.registerLoadedCallback(function() {
  		$(window).scroll(function(e) {UserList._onScroll(e);});

  	});

  	$('table').after($('<div class="loading" style="height: 200px; visibility: hidden;"></div>'));

  
  	$('select[multiple]').each(function (index, element) {
  		UserList.applyMultiplySelect($(element));
  	});
  
  	$('table').on('click', 'td.remove>a', 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);
  	});
  
  	$('table').on('click', 'td.password>img', 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) {
  					var recoveryPasswordVal = $('input:password[id="recoveryPassword"]').val();
  					$.post(

  						OC.Router.generate('settings_users_changepassword'),

  						{username: uid, password: $(this).val(), recoveryPassword: recoveryPasswordVal},
  						function (result) {
  							if (result.status != 'success') {
  								OC.Notification.show(t('admin', result.data.message));
  							}
  						}
  					);
  					input.blur();
  				} else {
  					input.blur();
  				}
  			}
  		});
  		input.blur(function () {
  			$(this).replaceWith($('<span>●●●●●●●</span>'));
  			img.css('display', '');
  		});
  	});
  	$('input:password[id="recoveryPassword"]').keyup(function(event) {
  		OC.Notification.hide();
  	});

  	$('table').on('click', 'td.password', function (event) {
  		$(this).children('img').click();
  	});
  
  	$('table').on('click', 'td.displayName>img', function (event) {
  		event.stopPropagation();
  		var img = $(this);
  		var uid = img.parent().parent().attr('data-uid');
  		var displayName = escapeHTML(img.parent().parent().attr('data-displayName'));
  		var input = $('<input type="text" value="' + displayName + '">');
  		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', 'changedisplayname.php'),
  						{username: uid, displayName: $(this).val()},
  						function (result) {

  							if (result && result.status==='success'){
  								img.parent().parent().find('div.avatardiv').avatar(result.data.username, 32);
  							}

  						}
  					);
  					input.blur();
  				} else {
  					input.blur();
  				}
  			}
  		});
  		input.blur(function () {

  			$(this).replaceWith(escapeHTML($(this).val()));

  			img.css('display', '');
  		});
  	});
  	$('table').on('click', 'td.displayName', function (event) {
  		$(this).children('img').click();
  	});
  
  	$('select.quota, select.quota-user').singleSelect().on('change', function () {

  		var select = $(this);

  		var uid = $(this).parent().parent().attr('data-uid');
  		var quota = $(this).val();

  		setQuota(uid, quota, function(returnedQuota){
  			if (quota !== returnedQuota) {
  				select.find(':selected').text(returnedQuota);
  			}
  		});

  	});
  
  	$('#newuser').submit(function (event) {
  		event.preventDefault();
  		var username = $('#newusername').val();
  		var password = $('#newuserpassword').val();

  		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,
  						t('settings', 'Error creating user'));
  				} else {
  					if (result.data.groups) {
  						var addedGroups = result.data.groups;
  						UserList.availableGroups = $.unique($.merge(UserList.availableGroups, addedGroups));
  					}

  					if (result.data.homeExists){
  						OC.Notification.hide();
  						OC.Notification.show(t('settings', 'Warning: Home directory for user "{user}" already exists', {user: result.data.username}));
  						if (UserList.notificationTimeout){
  							window.clearTimeout(UserList.notificationTimeout);
  						}
  						UserList.notificationTimeout = window.setTimeout(
  							function(){
  								OC.Notification.hide();
  								UserList.notificationTimeout = null;
  							}, 10000);
  					}

  					if($('tr[data-uid="' + username + '"]').length === 0) {
  						UserList.add(username, username, result.data.groups, null, 'default', true);
  					}
  				}
  			}
  		);
  	});
  	// Handle undo notifications
  	OC.Notification.hide();
  	$('#notification').on('click', '.undo', function () {
  		if ($('#notification').data('deleteuser')) {
  			$('tbody tr').filterAttr('data-uid', UserList.deleteUid).show();
  			UserList.deleteCanceled = true;
  		}
  		OC.Notification.hide();
  	});

  	UserList.useUndo = ('onbeforeunload' in window);

  	$(window).bind('beforeunload', function () {
  		UserList.finishDelete(null);
  	});
  });