/**
 * 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('users', 'deleted') + ' ' + uid + '<span class="undo">' + t('users', '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="' + group + '">' + group + '</option>'));
            if (typeof subadminSelect !== 'undefined' && group != 'admin') {
                subadminSelect.append($('<option value="' + group + '">' + 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')
            });
            var rm_link = $('<a>', { class:'action delete', 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="' + quota + '" selected="selected">' + 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.Router.generate('settings_ajax_userlist', { 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) {
                        $(element).append('<option value="' + group + '">' + group + '</option>');
                    }
                })
            };
            var label;
            if (isadmin) {
                label = t('settings', 'add group');
            } else {
                label = null;
            }
            element.multiSelect({
                createCallback:addGroup,
                createText:label,
                checked:checked,
                oncheck:checkHandeler,
                onuncheck:checkHandeler,
                minWidth:100,
            });
        }
        if ($(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="' + group + '">' + 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,
                        t('settings', '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);
    });
});