From 547e681a221b44dc5f8767027b7f22d3f1bb5885 Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Fri, 7 Jan 2022 08:57:20 +0100
Subject: [PATCH] Remove unused users-page scripts

---
 assets/js/backend_users.js             | 236 ---------
 assets/js/backend_users_admins.js      | 488 ------------------
 assets/js/backend_users_providers.js   | 674 -------------------------
 assets/js/backend_users_secretaries.js | 512 -------------------
 4 files changed, 1910 deletions(-)
 delete mode 100644 assets/js/backend_users.js
 delete mode 100644 assets/js/backend_users_admins.js
 delete mode 100755 assets/js/backend_users_providers.js
 delete mode 100644 assets/js/backend_users_secretaries.js

diff --git a/assets/js/backend_users.js b/assets/js/backend_users.js
deleted file mode 100644
index 798ec8b6..00000000
--- a/assets/js/backend_users.js
+++ /dev/null
@@ -1,236 +0,0 @@
-/* ----------------------------------------------------------------------------
- * Easy!Appointments - Open Source Web Scheduler
- *
- * @package     EasyAppointments
- * @author      A.Tselegidis <alextselegidis@gmail.com>
- * @copyright   Copyright (c) Alex Tselegidis
- * @license     https://opensource.org/licenses/GPL-3.0 - GPLv3
- * @link        https://easyappointments.org
- * @since       v1.0.0
- * ---------------------------------------------------------------------------- */
-
-window.BackendUsers = window.BackendUsers || {};
-
-/**
- * Backend Users
- *
- * This module handles the js functionality of the users backend page. It uses three other
- * classes (defined below) in order to handle the admin, provider and secretary record types.
- *
- * @module BackendUsers
- */
-(function (exports) {
-    'use strict';
-
-    /**
-     * Minimum Password Length
-     *
-     * @type {Number}
-     */
-    exports.MIN_PASSWORD_LENGTH = 7;
-
-    /**
-     * Contains the current tab record methods for the page.
-     *
-     * @type {AdminsHelper|ProvidersHelper|SecretariesHelper}
-     */
-    var helper = {};
-
-    /**
-     * Use this class instance for performing actions on the working plan.
-     *
-     * @type {WorkingPlan}
-     */
-    exports.wp = {};
-
-    /**
-     * Initialize the backend users page.
-     *
-     * @param {Boolean} defaultEventHandlers (OPTIONAL) Whether to bind the default event handlers.
-     */
-    exports.initialize = function (defaultEventHandlers) {
-        defaultEventHandlers = defaultEventHandlers || true;
-
-        exports.wp = new WorkingPlan();
-        exports.wp.bindEventHandlers();
-
-        // Instantiate default helper object (admin).
-        helper = new ProvidersHelper();
-        helper.resetForm();
-        helper.filter('');
-        helper.bindEventHandlers();
-
-        // Fill the services and providers list boxes.
-        GlobalVariables.services.forEach(function (service) {
-            $('<div/>', {
-                'class': 'checkbox',
-                'html': [
-                    $('<div/>', {
-                        'class': 'checkbox form-check',
-                        'html': [
-                            $('<input/>', {
-                                'class': 'form-check-input',
-                                'type': 'checkbox',
-                                'data-id': service.id,
-                                'prop': {
-                                    'disabled': true
-                                }
-                            }),
-                            $('<label/>', {
-                                'class': 'form-check-label',
-                                'text': service.name,
-                                'for': service.id
-                            })
-                        ]
-                    })
-                ]
-            }).appendTo('#provider-services');
-        });
-
-        GlobalVariables.providers.forEach(function (provider) {
-            $('<div/>', {
-                'class': 'checkbox',
-                'html': [
-                    $('<div/>', {
-                        'class': 'checkbox form-check',
-                        'html': [
-                            $('<input/>', {
-                                'class': 'form-check-input',
-                                'type': 'checkbox',
-                                'data-id': provider.id
-                            }),
-                            $('<label/>', {
-                                'class': 'form-check-label',
-                                'text': provider.first_name + ' ' + provider.last_name,
-                                'for': provider.id
-                            })
-                        ]
-                    })
-                ]
-            }).appendTo('#secretary-providers');
-        });
-
-        // Bind event handlers.
-        if (defaultEventHandlers) {
-            bindEventHandlers();
-        }
-    };
-
-    /**
-     * Binds the default backend users event handlers. Do not use this method on a different
-     * page because it needs the backend users page DOM.
-     */
-    function bindEventHandlers() {
-        /**
-         * Event: Page Tab Button "Click"
-         *
-         * Changes the displayed tab.
-         */
-        $('#users-page > .nav-pills a[data-toggle="tab"]').on('shown.bs.tab', function () {
-            if ($(this).parents('.switch-view').length) {
-                return; // Do not proceed if this was the sub navigation.
-            }
-
-            if (helper) {
-                helper.unbindEventHandlers();
-            }
-
-            if ($(this).attr('href') === '#admins') {
-                helper = new AdminsHelper();
-            } else if ($(this).attr('href') === '#providers') {
-                helper = new ProvidersHelper();
-            } else if ($(this).attr('href') === '#secretaries') {
-                helper = new SecretariesHelper();
-
-                // Update the list with the all the available providers.
-                var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_filter_providers';
-
-                var data = {
-                    csrf_token: GlobalVariables.csrfToken,
-                    key: ''
-                };
-
-                $.post(url, data).done(function (response) {
-                    GlobalVariables.providers = response;
-
-                    $('#secretary-providers').empty();
-
-                    GlobalVariables.providers.forEach(function (provider) {
-                        $('<div/>', {
-                            'class': 'checkbox',
-                            'html': [
-                                $('<div/>', {
-                                    'class': 'checkbox form-check',
-                                    'html': [
-                                        $('<input/>', {
-                                            'class': 'form-check-input',
-                                            'type': 'checkbox',
-                                            'data-id': provider.id,
-                                            'prop': {
-                                                'disabled': true
-                                            }
-                                        }),
-                                        $('<label/>', {
-                                            'class': 'form-check-label',
-                                            'text': provider.first_name + ' ' + provider.last_name,
-                                            'for': provider.id
-                                        })
-                                    ]
-                                })
-                            ]
-                        }).appendTo('#secretary-providers');
-                    });
-                });
-            }
-
-            helper.resetForm();
-            helper.filter('');
-            helper.bindEventHandlers();
-            $('.filter-key').val('');
-            Backend.placeFooterToBottom();
-        });
-
-        /**
-         * Event: Admin, Provider, Secretary Username "Focusout"
-         *
-         * When the user leaves the username input field we will need to check if the username
-         * is not taken by another record in the system. Usernames must be unique.
-         */
-        $('#admin-username, #provider-username, #secretary-username').focusout(function () {
-            var $input = $(this);
-
-            if ($input.prop('readonly') === true || $input.val() === '') {
-                return;
-            }
-
-            var userId = $input.parents().eq(2).find('.record-id').val();
-
-            if (!userId) {
-                return;
-            }
-
-            var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_validate_username';
-
-            var data = {
-                csrf_token: GlobalVariables.csrfToken,
-                username: $input.val(),
-                user_id: userId
-            };
-
-            $.post(url, data).done(function (response) {
-                if (response.is_valid === 'false') {
-                    $input.addClass('is-invalid');
-                    $input.attr('already-exists', 'true');
-                    $input.parents().eq(3).find('.form-message').text(App.Lang.username_already_exists);
-                    $input.parents().eq(3).find('.form-message').show();
-                } else {
-                    $input.removeClass('is-invalid');
-                    $input.attr('already-exists', 'false');
-                    if ($input.parents().eq(3).find('.form-message').text() === App.Lang.username_already_exists) {
-                        $input.parents().eq(3).find('.form-message').hide();
-                    }
-                }
-            });
-        });
-    }
-})(window.BackendUsers);
diff --git a/assets/js/backend_users_admins.js b/assets/js/backend_users_admins.js
deleted file mode 100644
index d0b2880a..00000000
--- a/assets/js/backend_users_admins.js
+++ /dev/null
@@ -1,488 +0,0 @@
-/* ----------------------------------------------------------------------------
- * Easy!Appointments - Open Source Web Scheduler
- *
- * @package     EasyAppointments
- * @author      A.Tselegidis <alextselegidis@gmail.com>
- * @copyright   Copyright (c) Alex Tselegidis
- * @license     https://opensource.org/licenses/GPL-3.0 - GPLv3
- * @link        https://easyappointments.org
- * @since       v1.0.0
- * ---------------------------------------------------------------------------- */
-
-(function () {
-    'use strict';
-
-    /**
-     * This class contains the Admins helper class declaration, along with the "Admins" tab
-     * event handlers. By dividing the backend/users tab functionality into separate files
-     * it is easier to maintain the code.
-     *
-     * @class AdminsHelper
-     */
-    var AdminsHelper = function () {
-        this.filterResults = []; // Store the results for later use.
-        this.filterLimit = 20;
-    };
-
-    /**
-     * Bind the event handlers for the backend/users "Admins" tab.
-     */
-    AdminsHelper.prototype.bindEventHandlers = function () {
-        /**
-         * Event: Filter Admins Form "Submit"
-         *
-         * Filter the admin records with the given key string.
-         *
-         * @param {jQuery.Event} event
-         */
-        $('#admins').on(
-            'submit',
-            '#filter-admins form',
-            function (event) {
-                event.preventDefault();
-                var key = $('#filter-admins .key').val();
-                $('#filter-admins .selected').removeClass('selected');
-                this.resetForm();
-                this.filter(key);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Clear Filter Results Button "Click"
-         */
-        $('#admins').on(
-            'click',
-            '#filter-admins .clear',
-            function () {
-                this.filter('');
-                $('#filter-admins .key').val('');
-                this.resetForm();
-            }.bind(this)
-        );
-
-        /**
-         * Event: Filter Admin Row "Click"
-         *
-         * Display the selected admin data to the user.
-         */
-        $('#admins').on(
-            'click',
-            '.admin-row',
-            function (event) {
-                if ($('#filter-admins .filter').prop('disabled')) {
-                    $('#filter-admins .results').css('color', '#AAA');
-                    return; // exit because we are currently on edit mode
-                }
-
-                var adminId = $(event.currentTarget).attr('data-id');
-
-                var admin = this.filterResults.find(function (filterResult) {
-                    return Number(filterResult.id) === Number(adminId);
-                });
-
-                this.display(admin);
-                $('#filter-admins .selected').removeClass('selected');
-                $(event.currentTarget).addClass('selected');
-                $('#edit-admin, #delete-admin').prop('disabled', false);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Add New Admin Button "Click"
-         */
-        $('#admins').on(
-            'click',
-            '#add-admin',
-            function () {
-                this.resetForm();
-                $('#admins .add-edit-delete-group').hide();
-                $('#admins .save-cancel-group').show();
-                $('#admins .record-details').find('input, textarea').prop('disabled', false);
-                $('#admins .record-details').find('select').prop('disabled', false);
-                $('#admin-password, #admin-password-confirm').addClass('required');
-                $('#filter-admins button').prop('disabled', true);
-                $('#filter-admins .results').css('color', '#AAA');
-            }.bind(this)
-        );
-
-        /**
-         * Event: Edit Admin Button "Click"
-         */
-        $('#admins').on('click', '#edit-admin', function () {
-            $('#admins .add-edit-delete-group').hide();
-            $('#admins .save-cancel-group').show();
-            $('#admins .record-details').find('input, textarea').prop('disabled', false);
-            $('#admins .record-details').find('select').prop('disabled', false);
-            $('#admin-password, #admin-password-confirm').removeClass('required');
-            $('#filter-admins button').prop('disabled', true);
-            $('#filter-admins .results').css('color', '#AAA');
-        });
-
-        /**
-         * Event: Delete Admin Button "Click"
-         */
-        $('#admins').on(
-            'click',
-            '#delete-admin',
-            function () {
-                var adminId = $('#admin-id').val();
-
-                var buttons = [
-                    {
-                        text: App.Lang.cancel,
-                        click: function () {
-                            $('#message-box').dialog('close');
-                        }
-                    },
-                    {
-                        text: App.Lang.delete,
-                        click: function () {
-                            this.delete(adminId);
-                            $('#message-box').dialog('close');
-                        }.bind(this)
-                    }
-                ];
-
-                GeneralFunctions.displayMessageBox(App.Lang.delete_admin, App.Lang.delete_record_prompt, buttons);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Save Admin Button "Click"
-         */
-        $('#admins').on(
-            'click',
-            '#save-admin',
-            function () {
-                var admin = {
-                    first_name: $('#admin-first-name').val(),
-                    last_name: $('#admin-last-name').val(),
-                    email: $('#admin-email').val(),
-                    mobile_number: $('#admin-mobile-number').val(),
-                    phone_number: $('#admin-phone-number').val(),
-                    address: $('#admin-address').val(),
-                    city: $('#admin-city').val(),
-                    state: $('#admin-state').val(),
-                    zip_code: $('#admin-zip-code').val(),
-                    notes: $('#admin-notes').val(),
-                    timezone: $('#admin-timezone').val(),
-                    settings: {
-                        username: $('#admin-username').val(),
-                        notifications: $('#admin-notifications').prop('checked'),
-                        calendar_view: $('#admin-calendar-view').val()
-                    }
-                };
-
-                // Include password if changed.
-                if ($('#admin-password').val() !== '') {
-                    admin.settings.password = $('#admin-password').val();
-                }
-
-                // Include id if changed.
-                if ($('#admin-id').val() !== '') {
-                    admin.id = $('#admin-id').val();
-                }
-
-                if (!this.validate()) {
-                    return;
-                }
-
-                this.save(admin);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Cancel Admin Button "Click"
-         *
-         * Cancel add or edit of an admin record.
-         */
-        $('#admins').on(
-            'click',
-            '#cancel-admin',
-            function () {
-                var id = $('#admin-id').val();
-                this.resetForm();
-                if (id) {
-                    this.select(id, true);
-                }
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Remove the previously registered event handlers.
-     */
-    AdminsHelper.prototype.unbindEventHandlers = function () {
-        $('#admins')
-            .off('submit', '#filter-admins form')
-            .off('click', '#filter-admins .clear')
-            .off('click', '.admin-row')
-            .off('click', '#add-admin')
-            .off('click', '#edit-admin')
-            .off('click', '#delete-admin')
-            .off('click', '#save-admin')
-            .off('click', '#cancel-admin');
-    };
-
-    /**
-     * Save admin record to database.
-     *
-     * @param {Object} admin Contains the admin record data. If an 'id' value is provided
-     * then the update operation is going to be executed.
-     */
-    AdminsHelper.prototype.save = function (admin) {
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_save_admin';
-
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            admin: JSON.stringify(admin)
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                Backend.displayNotification(App.Lang.admin_saved);
-                this.resetForm();
-                $('#filter-admins .key').val('');
-                this.filter('', response.id, true);
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Delete an admin record from database.
-     *
-     * @param {Number} id Record id to be deleted.
-     */
-    AdminsHelper.prototype.delete = function (id) {
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_delete_admin';
-
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            admin_id: id
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                Backend.displayNotification(App.Lang.admin_deleted);
-                this.resetForm();
-                this.filter($('#filter-admins .key').val());
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Validates an admin record.
-     *
-     * @return {Boolean} Returns the validation result.
-     */
-    AdminsHelper.prototype.validate = function () {
-        $('#admins .is-invalid').removeClass('is-invalid');
-
-        try {
-            // Validate required fields.
-            var missingRequired = false;
-
-            $('#admins .required').each(function (index, requiredField) {
-                if (!$(requiredField).val()) {
-                    $(requiredField).addClass('is-invalid');
-                    missingRequired = true;
-                }
-            });
-
-            if (missingRequired) {
-                throw new Error('Fields with * are  required.');
-            }
-
-            // Validate passwords.
-            if ($('#admin-password').val() !== $('#admin-password-confirm').val()) {
-                $('#admin-password, #admin-password-confirm').addClass('is-invalid');
-                throw new Error(App.Lang.passwords_mismatch);
-            }
-
-            if (
-                $('#admin-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH &&
-                $('#admin-password').val() !== ''
-            ) {
-                $('#admin-password, #admin-password-confirm').addClass('is-invalid');
-                throw new Error(App.Lang.password_length_notice.replace('$number', BackendUsers.MIN_PASSWORD_LENGTH));
-            }
-
-            // Validate user email.
-            if (!GeneralFunctions.validateEmail($('#admin-email').val())) {
-                $('#admin-email').addClass('is-invalid');
-                throw new Error(App.Lang.invalid_email);
-            }
-
-            // Check if username exists
-            if ($('#admin-username').attr('already-exists') === 'true') {
-                $('#admin-username').addClass('is-invalid');
-                throw new Error(App.Lang.username_already_exists);
-            }
-
-            return true;
-        } catch (error) {
-            $('#admins .form-message').addClass('alert-danger').text(error.message).show();
-            return false;
-        }
-    };
-
-    /**
-     * Resets the admin form back to its initial state.
-     */
-    AdminsHelper.prototype.resetForm = function () {
-        $('#filter-admins .selected').removeClass('selected');
-        $('#filter-admins button').prop('disabled', false);
-        $('#filter-admins .results').css('color', '');
-
-        $('#admins .add-edit-delete-group').show();
-        $('#admins .save-cancel-group').hide();
-        $('#admins .record-details').find('input, select, textarea').val('').prop('disabled', true);
-        $('#admins .record-details #admin-calendar-view').val('default');
-        $('#admins .record-details #admin-timezone').val('UTC');
-        $('#edit-admin, #delete-admin').prop('disabled', true);
-
-        $('#admins .is-invalid').removeClass('is-invalid');
-        $('#admins .form-message').hide();
-    };
-
-    /**
-     * Display a admin record into the admin form.
-     *
-     * @param {Object} admin Contains the admin record data.
-     */
-    AdminsHelper.prototype.display = function (admin) {
-        $('#admin-id').val(admin.id);
-        $('#admin-first-name').val(admin.first_name);
-        $('#admin-last-name').val(admin.last_name);
-        $('#admin-email').val(admin.email);
-        $('#admin-mobile-number').val(admin.mobile_number);
-        $('#admin-phone-number').val(admin.phone_number);
-        $('#admin-address').val(admin.address);
-        $('#admin-city').val(admin.city);
-        $('#admin-state').val(admin.state);
-        $('#admin-zip-code').val(admin.zip_code);
-        $('#admin-notes').val(admin.notes);
-        $('#admin-timezone').val(admin.timezone);
-
-        $('#admin-username').val(admin.settings.username);
-        $('#admin-calendar-view').val(admin.settings.calendar_view);
-        $('#admin-notifications').prop('checked', Boolean(Number(admin.settings.notifications)));
-    };
-
-    /**
-     * Filters admin records depending a key string.
-     *
-     * @param {String} key This string is used to filter the admin records of the database.
-     * @param {Number} selectId (OPTIONAL = undefined) This record id will be selected when
-     * the filter operation is finished.
-     * @param {Boolean} display (OPTIONAL = false) If true the selected record data are going
-     * to be displayed on the details column (requires a selected record though).
-     */
-    AdminsHelper.prototype.filter = function (key, selectId, display) {
-        display = display || false;
-
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_filter_admins';
-
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            key: key,
-            limit: this.filterLimit
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                this.filterResults = response;
-
-                $('#filter-admins .results').empty();
-
-                response.forEach(
-                    function (admin) {
-                        $('#filter-admins .results').append(this.getFilterHtml(admin)).append($('<hr/>'));
-                    }.bind(this)
-                );
-
-                if (!response.length) {
-                    $('#filter-admins .results').append(
-                        $('<em/>', {
-                            'text': App.Lang.no_records_found
-                        })
-                    );
-                } else if (response.length === this.filterLimit) {
-                    $('<button/>', {
-                        'type': 'button',
-                        'class': 'btn btn-outline-secondary w-100 load-more text-center',
-                        'text': App.Lang.load_more,
-                        'click': function () {
-                            this.filterLimit += 20;
-                            this.filter(key, selectId, display);
-                        }.bind(this)
-                    }).appendTo('#filter-admins .results');
-                }
-
-                if (selectId) {
-                    this.select(selectId, display);
-                }
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Get an admin row html code that is going to be displayed on the filter results list.
-     *
-     * @param {Object} admin Contains the admin record data.
-     *
-     * @return {String} The html code that represents the record on the filter results list.
-     */
-    AdminsHelper.prototype.getFilterHtml = function (admin) {
-        var name = admin.first_name + ' ' + admin.last_name;
-
-        var info = admin.email;
-
-        info = admin.mobile_number ? info + ', ' + admin.mobile_number : info;
-
-        info = admin.phone_number ? info + ', ' + admin.phone_number : info;
-
-        return $('<div/>', {
-            'class': 'admin-row entry',
-            'data-id': admin.id,
-            'html': [
-                $('<strong/>', {
-                    'text': name
-                }),
-                $('<br/>'),
-                $('<span/>', {
-                    'text': info
-                }),
-                $('<br/>')
-            ]
-        });
-    };
-
-    /**
-     * Select a specific record from the current filter results. If the admin id does not exist
-     * in the list then no record will be selected.
-     *
-     * @param {Number} id The record id to be selected from the filter results.
-     * @param {Boolean} display Optional (false), if true then the method will display the record
-     * on the form.
-     */
-    AdminsHelper.prototype.select = function (id, display) {
-        display = display || false;
-
-        $('#filter-admins .selected').removeClass('selected');
-
-        $('#filter-admins .admin-row[data-id="' + id + '"]').addClass('selected');
-
-        if (display) {
-            var admin = this.filterResults.find(function (filterResult) {
-                return Number(filterResult.id) === Number(id);
-            });
-
-            this.display(admin);
-
-            $('#edit-admin, #delete-admin').prop('disabled', false);
-        }
-    };
-
-    window.AdminsHelper = AdminsHelper;
-})();
diff --git a/assets/js/backend_users_providers.js b/assets/js/backend_users_providers.js
deleted file mode 100755
index 4514d0fc..00000000
--- a/assets/js/backend_users_providers.js
+++ /dev/null
@@ -1,674 +0,0 @@
-/* ----------------------------------------------------------------------------
- * Easy!Appointments - Open Source Web Scheduler
- *
- * @package     EasyAppointments
- * @author      A.Tselegidis <alextselegidis@gmail.com>
- * @copyright   Copyright (c) Alex Tselegidis
- * @license     https://opensource.org/licenses/GPL-3.0 - GPLv3
- * @link        https://easyappointments.org
- * @since       v1.0.0
- * ---------------------------------------------------------------------------- */
-
-(function () {
-    'use strict';
-
-    /**
-     * Providers Helper
-     *
-     * This class contains the Providers helper class declaration, along with the "Providers" tab
-     * event handlers. By dividing the backend/users tab functionality into separate files
-     * it is easier to maintain the code.
-     *
-     * @class ProvidersHelper
-     */
-    var ProvidersHelper = function () {
-        this.filterResults = {}; // Store the results for later use.
-        this.filterLimit = 20;
-    };
-
-    /**
-     * Bind the event handlers for the backend/users "Providers" tab.
-     */
-    ProvidersHelper.prototype.bindEventHandlers = function () {
-        /**
-         * Event: Filter Providers Form "Submit"
-         *
-         * Filter the provider records with the given key string.
-         *
-         * @param {jQuery.Event} event
-         */
-        $('#providers').on(
-            'submit',
-            '#filter-providers form',
-            function (event) {
-                event.preventDefault();
-                var key = $('#filter-providers .key').val();
-                $('.selected').removeClass('selected');
-                this.resetForm();
-                this.filter(key);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Clear Filter Button "Click"
-         */
-        $('#providers').on(
-            'click',
-            '#filter-providers .clear',
-            function () {
-                this.filter('');
-                $('#filter-providers .key').val('');
-                this.resetForm();
-            }.bind(this)
-        );
-
-        /**
-         * Event: Filter Provider Row "Click"
-         *
-         * Display the selected provider data to the user.
-         */
-        $('#providers').on(
-            'click',
-            '.provider-row',
-            function (event) {
-                if ($('#filter-providers .filter').prop('disabled')) {
-                    $('#filter-providers .results').css('color', '#AAA');
-                    return; // Exit because we are currently on edit mode.
-                }
-
-                var providerId = $(event.currentTarget).attr('data-id');
-                var provider = this.filterResults.find(function (filterResult) {
-                    return Number(filterResult.id) === Number(providerId);
-                });
-
-                this.display(provider);
-                $('#filter-providers .selected').removeClass('selected');
-                $(event.currentTarget).addClass('selected');
-                $('#edit-provider, #delete-provider').prop('disabled', false);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Add New Provider Button "Click"
-         */
-        $('#providers').on(
-            'click',
-            '#add-provider',
-            function () {
-                this.resetForm();
-                $('#filter-providers button').prop('disabled', true);
-                $('#filter-providers .results').css('color', '#AAA');
-                $('#providers .add-edit-delete-group').hide();
-                $('#providers .save-cancel-group').show();
-                $('#providers .record-details').find('input, select, textarea').prop('disabled', false);
-                $('#provider-password, #provider-password-confirm').addClass('required');
-                $('#providers')
-                    .find(
-                        '.add-break, .edit-break, .delete-break, .add-working-plan-exception, .edit-working-plan-exception, .delete-working-plan-exception, #reset-working-plan'
-                    )
-                    .prop('disabled', false);
-                $('#provider-services input:checkbox').prop('disabled', false);
-
-                // Apply default working plan
-                BackendUsers.wp.setup(GlobalVariables.workingPlan);
-                BackendUsers.wp.timepickers(false);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Edit Provider Button "Click"
-         */
-        $('#providers').on('click', '#edit-provider', function () {
-            $('#providers .add-edit-delete-group').hide();
-            $('#providers .save-cancel-group').show();
-            $('#filter-providers button').prop('disabled', true);
-            $('#filter-providers .results').css('color', '#AAA');
-            $('#providers .record-details').find('input, select, textarea').prop('disabled', false);
-            $('#provider-password, #provider-password-confirm').removeClass('required');
-            $('#provider-services input:checkbox').prop('disabled', false);
-            $('#providers')
-                .find(
-                    '.add-break, .edit-break, .delete-break, .add-working-plan-exception, .edit-working-plan-exception, .delete-working-plan-exception, #reset-working-plan'
-                )
-                .prop('disabled', false);
-            $('#providers input:checkbox').prop('disabled', false);
-            BackendUsers.wp.timepickers(false);
-        });
-
-        /**
-         * Event: Delete Provider Button "Click"
-         */
-        $('#providers').on(
-            'click',
-            '#delete-provider',
-            function () {
-                var providerId = $('#provider-id').val();
-
-                var buttons = [
-                    {
-                        text: App.Lang.cancel,
-                        click: function () {
-                            $('#message-box').dialog('close');
-                        }
-                    },
-                    {
-                        text: App.Lang.delete,
-                        click: function () {
-                            this.delete(providerId);
-                            $('#message-box').dialog('close');
-                        }.bind(this)
-                    }
-                ];
-
-                GeneralFunctions.displayMessageBox(App.Lang.delete_provider, App.Lang.delete_record_prompt, buttons);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Save Provider Button "Click"
-         */
-        $('#providers').on(
-            'click',
-            '#save-provider',
-            function () {
-                var provider = {
-                    first_name: $('#provider-first-name').val(),
-                    last_name: $('#provider-last-name').val(),
-                    email: $('#provider-email').val(),
-                    mobile_number: $('#provider-mobile-number').val(),
-                    phone_number: $('#provider-phone-number').val(),
-                    address: $('#provider-address').val(),
-                    city: $('#provider-city').val(),
-                    state: $('#provider-state').val(),
-                    zip_code: $('#provider-zip-code').val(),
-                    notes: $('#provider-notes').val(),
-                    timezone: $('#provider-timezone').val(),
-                    settings: {
-                        username: $('#provider-username').val(),
-                        working_plan: JSON.stringify(BackendUsers.wp.get()),
-                        working_plan_exceptions: JSON.stringify(BackendUsers.wp.getWorkingPlanExceptions()),
-                        notifications: $('#provider-notifications').prop('checked'),
-                        calendar_view: $('#provider-calendar-view').val()
-                    }
-                };
-
-                // Include provider services.
-                provider.services = [];
-                $('#provider-services input:checkbox').each(function (index, checkbox) {
-                    if ($(checkbox).prop('checked')) {
-                        provider.services.push($(checkbox).attr('data-id'));
-                    }
-                });
-
-                // Include password if changed.
-                if ($('#provider-password').val() !== '') {
-                    provider.settings.password = $('#provider-password').val();
-                }
-
-                // Include id if changed.
-                if ($('#provider-id').val() !== '') {
-                    provider.id = $('#provider-id').val();
-                }
-
-                if (!this.validate()) {
-                    return;
-                }
-
-                this.save(provider);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Cancel Provider Button "Click"
-         *
-         * Cancel add or edit of an provider record.
-         */
-        $('#providers').on(
-            'click',
-            '#cancel-provider',
-            function () {
-                var id = $('#filter-providers .selected').attr('data-id');
-                this.resetForm();
-                if (id) {
-                    this.select(id, true);
-                }
-            }.bind(this)
-        );
-
-        /**
-         * Event: Display Provider Details "Click"
-         */
-        $('#providers').on('shown.bs.tab', 'a[data-toggle="tab"]', function () {
-            Backend.placeFooterToBottom();
-        });
-
-        /**
-         * Event: Reset Working Plan Button "Click".
-         */
-        $('#providers').on('click', '#reset-working-plan', function () {
-            $('.breaks tbody').empty();
-            $('.working-plan-exceptions tbody').empty();
-            $('.work-start, .work-end').val('');
-            BackendUsers.wp.setup(GlobalVariables.workingPlan);
-            BackendUsers.wp.timepickers(false);
-        });
-    };
-
-    /**
-     * Remove the previously registered event handlers.
-     */
-    ProvidersHelper.prototype.unbindEventHandlers = function () {
-        $('#providers')
-            .off('submit', '#filter-providers form')
-            .off('click', '#filter-providers .clear')
-            .off('click', '.provider-row')
-            .off('click', '#add-provider')
-            .off('click', '#edit-provider')
-            .off('click', '#delete-provider')
-            .off('click', '#save-provider')
-            .off('click', '#cancel-provider')
-            .off('shown.bs.tab', 'a[data-toggle="tab"]')
-            .off('click', '#reset-working-plan');
-    };
-
-    /**
-     * Save provider record to database.
-     *
-     * @param {Object} provider Contains the admin record data. If an 'id' value is provided
-     * then the update operation is going to be executed.
-     */
-    ProvidersHelper.prototype.save = function (provider) {
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_save_provider';
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            provider: JSON.stringify(provider)
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                Backend.displayNotification(App.Lang.provider_saved);
-                this.resetForm();
-                $('#filter-providers .key').val('');
-                this.filter('', response.id, true);
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Delete a provider record from database.
-     *
-     * @param {Number} id Record id to be deleted.
-     */
-    ProvidersHelper.prototype.delete = function (id) {
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_delete_provider';
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            provider_id: id
-        };
-
-        $.post(url, data).done(
-            function () {
-                Backend.displayNotification(App.Lang.provider_deleted);
-                this.resetForm();
-                this.filter($('#filter-providers .key').val());
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Validates a provider record.
-     *
-     * @return {Boolean} Returns the validation result.
-     */
-    ProvidersHelper.prototype.validate = function () {
-        $('#providers .is-invalid').removeClass('is-invalid');
-        $('#providers .form-message').removeClass('alert-danger').hide();
-
-        try {
-            // Validate required fields.
-            var missingRequired = false;
-            $('#providers .required').each(function (index, requiredField) {
-                if (!$(requiredField).val()) {
-                    $(requiredField).addClass('is-invalid');
-                    missingRequired = true;
-                }
-            });
-            if (missingRequired) {
-                throw new Error(App.Lang.fields_are_required);
-            }
-
-            // Validate passwords.
-            if ($('#provider-password').val() !== $('#provider-password-confirm').val()) {
-                $('#provider-password, #provider-password-confirm').addClass('is-invalid');
-                throw new Error(App.Lang.passwords_mismatch);
-            }
-
-            if (
-                $('#provider-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH &&
-                $('#provider-password').val() !== ''
-            ) {
-                $('#provider-password, #provider-password-confirm').addClass('is-invalid');
-                throw new Error(App.Lang.password_length_notice.replace('$number', BackendUsers.MIN_PASSWORD_LENGTH));
-            }
-
-            // Validate user email.
-            if (!GeneralFunctions.validateEmail($('#provider-email').val())) {
-                $('#provider-email').addClass('is-invalid');
-                throw new Error(App.Lang.invalid_email);
-            }
-
-            // Check if username exists
-            if ($('#provider-username').attr('already-exists') === 'true') {
-                $('#provider-username').addClass('is-invalid');
-                throw new Error(App.Lang.username_already_exists);
-            }
-
-            return true;
-        } catch (error) {
-            $('#providers .form-message').addClass('alert-danger').text(error.message).show();
-            return false;
-        }
-    };
-
-    /**
-     * Resets the admin tab form back to its initial state.
-     */
-    ProvidersHelper.prototype.resetForm = function () {
-        $('#filter-providers .selected').removeClass('selected');
-        $('#filter-providers button').prop('disabled', false);
-        $('#filter-providers .results').css('color', '');
-
-        $('#providers .add-edit-delete-group').show();
-        $('#providers .save-cancel-group').hide();
-        $('#providers .record-details h3 a').remove();
-        $('#providers .record-details').find('input, select, textarea').val('').prop('disabled', true);
-        $('#providers .record-details #provider-calendar-view').val('default');
-        $('#providers .record-details #provider-timezone').val('UTC');
-        $('#providers .add-break, .add-working-plan-exception, #reset-working-plan').prop('disabled', true);
-        BackendUsers.wp.timepickers(true);
-        $('#providers .working-plan input:text').timepicker('destroy');
-        $('#providers .working-plan input:checkbox').prop('disabled', true);
-        $('.breaks').find('.edit-break, .delete-break').prop('disabled', true);
-        $('.working-plan-exceptions')
-            .find('.edit-working-plan-exception, .delete-working-plan-exception')
-            .prop('disabled', true);
-
-        $('#providers .record-details .is-invalid').removeClass('is-invalid');
-        $('#providers .record-details .form-message').hide();
-
-        $('#edit-provider, #delete-provider').prop('disabled', true);
-        $('#provider-services input:checkbox').prop('disabled', true).prop('checked', false);
-        $('#provider-services a').remove();
-        $('#providers .working-plan tbody').empty();
-        $('#providers .breaks tbody').empty();
-        $('#providers .working-plan-exceptions tbody').empty();
-    };
-
-    /**
-     * Display a provider record into the admin form.
-     *
-     * @param {Object} provider Contains the provider record data.
-     */
-    ProvidersHelper.prototype.display = function (provider) {
-        $('#provider-id').val(provider.id);
-        $('#provider-first-name').val(provider.first_name);
-        $('#provider-last-name').val(provider.last_name);
-        $('#provider-email').val(provider.email);
-        $('#provider-mobile-number').val(provider.mobile_number);
-        $('#provider-phone-number').val(provider.phone_number);
-        $('#provider-address').val(provider.address);
-        $('#provider-city').val(provider.city);
-        $('#provider-state').val(provider.state);
-        $('#provider-zip-code').val(provider.zip_code);
-        $('#provider-notes').val(provider.notes);
-        $('#provider-timezone').val(provider.timezone);
-
-        $('#provider-username').val(provider.settings.username);
-        $('#provider-calendar-view').val(provider.settings.calendar_view);
-        $('#provider-notifications').prop('checked', Boolean(Number(provider.settings.notifications)));
-
-        // Add dedicated provider link.
-        var dedicatedUrl = GlobalVariables.baseUrl + '/index.php?provider=' + encodeURIComponent(provider.id);
-        var $link = $('<a/>', {
-            'href': dedicatedUrl,
-            'html': [
-                $('<span/>', {
-                    'class': 'fas fa-link'
-                })
-            ]
-        });
-
-        $('#providers .details-view h3').find('a').remove().end().append($link);
-
-        $('#provider-services a').remove();
-        $('#provider-services input:checkbox').prop('checked', false);
-
-        provider.services.forEach(function (providerServiceId) {
-            var $checkbox = $('#provider-services input[data-id="' + providerServiceId + '"]');
-
-            if (!$checkbox.length) {
-                return;
-            }
-
-            $checkbox.prop('checked', true);
-
-            // Add dedicated service-provider link.
-            dedicatedUrl =
-                GlobalVariables.baseUrl +
-                '/index.php?provider=' +
-                encodeURIComponent(provider.id) +
-                '&service=' +
-                encodeURIComponent(providerServiceId);
-
-            $link = $('<a/>', {
-                'href': dedicatedUrl,
-                'html': [
-                    $('<span/>', {
-                        'class': 'fas fa-link'
-                    })
-                ]
-            });
-
-            $checkbox.parent().append($link);
-        });
-
-        // Display working plan
-        var workingPlan = $.parseJSON(provider.settings.working_plan);
-        BackendUsers.wp.setup(workingPlan);
-        $('.working-plan').find('input').prop('disabled', true);
-        $('.breaks').find('.edit-break, .delete-break').prop('disabled', true);
-        $('#providers .working-plan-exceptions tbody').empty();
-        var workingPlanExceptions = $.parseJSON(provider.settings.working_plan_exceptions);
-        BackendUsers.wp.setupWorkingPlanExceptions(workingPlanExceptions);
-        $('.working-plan-exceptions')
-            .find('.edit-working-plan-exception, .delete-working-plan-exception')
-            .prop('disabled', true);
-        $('#providers .working-plan input:checkbox').prop('disabled', true);
-        Backend.placeFooterToBottom();
-    };
-
-    /**
-     * Filters provider records depending a string key.
-     *
-     * @param {string} key This is used to filter the provider records of the database.
-     * @param {numeric} selectId Optional, if set, when the function is complete a result row can be set as selected.
-     * @param {bool} display Optional (false), if true the selected record will be also displayed.
-     */
-    ProvidersHelper.prototype.filter = function (key, selectId, display) {
-        display = display || false;
-
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_filter_providers';
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            key: key,
-            limit: this.filterLimit
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                this.filterResults = response;
-
-                $('#filter-providers .results').empty();
-                response.forEach(
-                    function (provider) {
-                        $('#filter-providers .results').append(this.getFilterHtml(provider)).append($('<hr/>'));
-                    }.bind(this)
-                );
-
-                if (!response.length) {
-                    $('#filter-providers .results').append(
-                        $('<em/>', {
-                            'text': App.Lang.no_records_found
-                        })
-                    );
-                } else if (response.length === this.filterLimit) {
-                    $('<button/>', {
-                        'type': 'button',
-                        'class': 'btn btn-outline-secondary w-100 load-more text-center',
-                        'text': App.Lang.load_more,
-                        'click': function () {
-                            this.filterLimit += 20;
-                            this.filter(key, selectId, display);
-                        }.bind(this)
-                    }).appendTo('#filter-providers .results');
-                }
-
-                if (selectId) {
-                    this.select(selectId, display);
-                }
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Get an provider row html code that is going to be displayed on the filter results list.
-     *
-     * @param {Object} provider Contains the provider record data.
-     *
-     * @return {String} The html code that represents the record on the filter results list.
-     */
-    ProvidersHelper.prototype.getFilterHtml = function (provider) {
-        var name = provider.first_name + ' ' + provider.last_name;
-
-        var info = provider.email;
-
-        info = provider.mobile_number ? info + ', ' + provider.mobile_number : info;
-
-        info = provider.phone_number ? info + ', ' + provider.phone_number : info;
-
-        return $('<div/>', {
-            'class': 'provider-row entry',
-            'data-id': provider.id,
-            'html': [
-                $('<strong/>', {
-                    'text': name
-                }),
-                $('<br/>'),
-                $('<span/>', {
-                    'text': info
-                }),
-                $('<br/>')
-            ]
-        });
-    };
-
-    /**
-     * Initialize the editable functionality to the break day table cells.
-     *
-     * @param {Object} $selector The cells to be initialized.
-     */
-    ProvidersHelper.prototype.editableDayCell = function ($selector) {
-        var weekDays = {};
-        weekDays[App.Lang.monday] = 'Monday';
-        weekDays[App.Lang.tuesday] = 'Tuesday';
-        weekDays[App.Lang.wednesday] = 'Wednesday';
-        weekDays[App.Lang.thursday] = 'Thursday';
-        weekDays[App.Lang.friday] = 'Friday';
-        weekDays[App.Lang.saturday] = 'Saturday';
-        weekDays[App.Lang.sunday] = 'Sunday';
-
-        $selector.editable(
-            function (value, settings) {
-                return value;
-            },
-            {
-                type: 'select',
-                data: weekDays,
-                event: 'edit',
-                height: '30px',
-                submit: '<button type="button" class="d-none submit-editable">Submit</button>',
-                cancel: '<button type="button" class="d-none cancel-editable">Cancel</button>',
-                onblur: 'ignore',
-                onreset: function (settings, td) {
-                    if (!BackendUsers.enableCancel) {
-                        return false; // disable ESC button
-                    }
-                },
-                onsubmit: function (settings, td) {
-                    if (!BackendUsers.enableSubmit) {
-                        return false; // disable Enter button
-                    }
-                }
-            }
-        );
-    };
-
-    /**
-     * Initialize the editable functionality to the break time table cells.
-     *
-     * @param {jQuery} $selector The cells to be initialized.
-     */
-    ProvidersHelper.prototype.editableTimeCell = function ($selector) {
-        $selector.editable(
-            function (value, settings) {
-                // Do not return the value because the user needs to press the "Save" button.
-                return value;
-            },
-            {
-                event: 'edit',
-                height: '25px',
-                submit: '<button type="button" class="d-none submit-editable">Submit</button>',
-                cancel: '<button type="button" class="d-none cancel-editable">Cancel</button>',
-                onblur: 'ignore',
-                onreset: function (settings, td) {
-                    if (!BackendUsers.enableCancel) {
-                        return false; // disable ESC button
-                    }
-                },
-                onsubmit: function (settings, td) {
-                    if (!BackendUsers.enableSubmit) {
-                        return false; // disable Enter button
-                    }
-                }
-            }
-        );
-    };
-
-    /**
-     * Select and display a providers filter result on the form.
-     *
-     * @param {Number} id Record id to be selected.
-     * @param {Boolean} display Optional (false), if true the record will be displayed on the form.
-     */
-    ProvidersHelper.prototype.select = function (id, display) {
-        display = display || false;
-
-        // Select record in filter results.
-        $('#filter-providers .provider-row[data-id="' + id + '"]').addClass('selected');
-
-        // Display record in form (if display = true).
-        if (display) {
-            var provider = this.filterResults.find(
-                function (filterResult) {
-                    return Number(filterResult.id) === Number(id);
-                }.bind(this)
-            );
-
-            this.display(provider);
-
-            $('#edit-provider, #delete-provider').prop('disabled', false);
-        }
-    };
-
-    window.ProvidersHelper = ProvidersHelper;
-})();
diff --git a/assets/js/backend_users_secretaries.js b/assets/js/backend_users_secretaries.js
deleted file mode 100644
index 5c6176fb..00000000
--- a/assets/js/backend_users_secretaries.js
+++ /dev/null
@@ -1,512 +0,0 @@
-/* ----------------------------------------------------------------------------
- * Easy!Appointments - Open Source Web Scheduler
- *
- * @package     EasyAppointments
- * @author      A.Tselegidis <alextselegidis@gmail.com>
- * @copyright   Copyright (c) Alex Tselegidis
- * @license     https://opensource.org/licenses/GPL-3.0 - GPLv3
- * @link        https://easyappointments.org
- * @since       v1.0.0
- * ---------------------------------------------------------------------------- */
-
-(function () {
-    'use strict';
-
-    /**
-     * Secretaries Helper
-     *
-     * This class contains the Secretaries helper class declaration, along with the "Secretaries"
-     * tab event handlers. By dividing the backend/users tab functionality into separate files
-     * it is easier to maintain the code.
-     *
-     * @class SecretariesHelper
-     */
-    var SecretariesHelper = function () {
-        this.filterResults = {}; // Store the results for later use.
-        this.filterLimit = 20;
-    };
-
-    /**
-     * Bind the event handlers for the backend/users "Secretaries" tab.
-     */
-    SecretariesHelper.prototype.bindEventHandlers = function () {
-        /**
-         * Event: Filter Secretaries Form "Submit"
-         *
-         * Filter the secretary records with the given key string.
-         *
-         * @param {jQuery.Event} event
-         */
-        $('#secretaries').on(
-            'submit',
-            '#filter-secretaries form',
-            function (event) {
-                event.preventDefault();
-                var key = $('#filter-secretaries .key').val();
-                $('#filter-secretaries .selected').removeClass('selected');
-                this.resetForm();
-                this.filter(key);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Clear Filter Results Button "Click"
-         */
-        $('#secretaries').on(
-            'click',
-            '#filter-secretaries .clear',
-            function () {
-                this.filter('');
-                $('#filter-secretaries .key').val('');
-                this.resetForm();
-            }.bind(this)
-        );
-
-        /**
-         * Event: Filter Secretary Row "Click"
-         *
-         * Display the selected secretary data to the user.
-         */
-        $('#secretaries').on(
-            'click',
-            '.secretary-row',
-            function (event) {
-                if ($('#filter-secretaries .filter').prop('disabled')) {
-                    $('#filter-secretaries .results').css('color', '#AAA');
-                    return; // exit because we are currently on edit mode
-                }
-
-                var secretaryId = $(event.currentTarget).attr('data-id');
-
-                var secretary = this.filterResults.find(function (filterResult) {
-                    return Number(filterResult.id) === Number(secretaryId);
-                });
-
-                this.display(secretary);
-
-                $('#filter-secretaries .selected').removeClass('selected');
-                $(event.currentTarget).addClass('selected');
-                $('#edit-secretary, #delete-secretary').prop('disabled', false);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Add New Secretary Button "Click"
-         */
-        $('#secretaries').on(
-            'click',
-            '#add-secretary',
-            function () {
-                this.resetForm();
-                $('#filter-secretaries button').prop('disabled', true);
-                $('#filter-secretaries .results').css('color', '#AAA');
-
-                $('#secretaries .add-edit-delete-group').hide();
-                $('#secretaries .save-cancel-group').show();
-                $('#secretaries .record-details').find('input, textarea').prop('disabled', false);
-                $('#secretaries .record-details').find('select').prop('disabled', false);
-                $('#secretary-password, #secretary-password-confirm').addClass('required');
-                $('#secretary-providers input:checkbox').prop('disabled', false);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Edit Secretary Button "Click"
-         */
-        $('#secretaries').on('click', '#edit-secretary', function () {
-            $('#filter-secretaries button').prop('disabled', true);
-            $('#filter-secretaries .results').css('color', '#AAA');
-            $('#secretaries .add-edit-delete-group').hide();
-            $('#secretaries .save-cancel-group').show();
-            $('#secretaries .record-details').find('input, textarea').prop('disabled', false);
-            $('#secretaries .record-details').find('select').prop('disabled', false);
-            $('#secretary-password, #secretary-password-confirm').removeClass('required');
-            $('#secretary-providers input:checkbox').prop('disabled', false);
-        });
-
-        /**
-         * Event: Delete Secretary Button "Click"
-         */
-        $('#secretaries').on(
-            'click',
-            '#delete-secretary',
-            function () {
-                var secretaryId = $('#secretary-id').val();
-                var buttons = [
-                    {
-                        text: App.Lang.cancel,
-                        click: function () {
-                            $('#message-box').dialog('close');
-                        }
-                    },
-                    {
-                        text: App.Lang.delete,
-                        click: function () {
-                            this.delete(secretaryId);
-                            $('#message-box').dialog('close');
-                        }.bind(this)
-                    }
-                ];
-
-                GeneralFunctions.displayMessageBox(App.Lang.delete_secretary, App.Lang.delete_record_prompt, buttons);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Save Secretary Button "Click"
-         */
-        $('#secretaries').on(
-            'click',
-            '#save-secretary',
-            function () {
-                var secretary = {
-                    first_name: $('#secretary-first-name').val(),
-                    last_name: $('#secretary-last-name').val(),
-                    email: $('#secretary-email').val(),
-                    mobile_number: $('#secretary-mobile-number').val(),
-                    phone_number: $('#secretary-phone-number').val(),
-                    address: $('#secretary-address').val(),
-                    city: $('#secretary-city').val(),
-                    state: $('#secretary-state').val(),
-                    zip_code: $('#secretary-zip-code').val(),
-                    notes: $('#secretary-notes').val(),
-                    timezone: $('#secretary-timezone').val(),
-                    settings: {
-                        username: $('#secretary-username').val(),
-                        notifications: $('#secretary-notifications').prop('checked'),
-                        calendar_view: $('#secretary-calendar-view').val()
-                    }
-                };
-
-                // Include secretary services.
-                secretary.providers = [];
-                $('#secretary-providers input:checkbox').each(function (index, checkbox) {
-                    if ($(checkbox).prop('checked')) {
-                        secretary.providers.push($(checkbox).attr('data-id'));
-                    }
-                });
-
-                // Include password if changed.
-                if ($('#secretary-password').val() !== '') {
-                    secretary.settings.password = $('#secretary-password').val();
-                }
-
-                // Include ID if changed.
-                if ($('#secretary-id').val() !== '') {
-                    secretary.id = $('#secretary-id').val();
-                }
-
-                if (!this.validate()) {
-                    return;
-                }
-
-                this.save(secretary);
-            }.bind(this)
-        );
-
-        /**
-         * Event: Cancel Secretary Button "Click"
-         *
-         * Cancel add or edit of an secretary record.
-         */
-        $('#secretaries').on(
-            'click',
-            '#cancel-secretary',
-            function () {
-                var id = $('#secretary-id').val();
-                this.resetForm();
-                if (id) {
-                    this.select(id, true);
-                }
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Remove the previously registered event handlers.
-     */
-    SecretariesHelper.prototype.unbindEventHandlers = function () {
-        $('#secretaries')
-            .off('submit', '#filter-secretaries form')
-            .off('click', '#filter-secretaries .clear')
-            .off('click', '.secretary-row')
-            .off('click', '#add-secretary')
-            .off('click', '#edit-secretary')
-            .off('click', '#delete-secretary')
-            .off('click', '#save-secretary')
-            .off('click', '#cancel-secretary');
-    };
-
-    /**
-     * Save secretary record to database.
-     *
-     * @param {Object} secretary Contains the secretary record data. If an 'id' value is provided
-     * then the update operation is going to be executed.
-     */
-    SecretariesHelper.prototype.save = function (secretary) {
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_save_secretary';
-
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            secretary: JSON.stringify(secretary)
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                Backend.displayNotification(App.Lang.secretary_saved);
-                this.resetForm();
-                $('#filter-secretaries .key').val('');
-                this.filter('', response.id, true);
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Delete a secretary record from database.
-     *
-     * @param {Number} id Record id to be deleted.
-     */
-    SecretariesHelper.prototype.delete = function (id) {
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_delete_secretary';
-
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            secretary_id: id
-        };
-
-        $.post(url, data).done(
-            function () {
-                Backend.displayNotification(App.Lang.secretary_deleted);
-                this.resetForm();
-                this.filter($('#filter-secretaries .key').val());
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Validates a secretary record.
-     *
-     * @return {Boolean} Returns the validation result.
-     */
-    SecretariesHelper.prototype.validate = function () {
-        $('#secretaries .is-invalid').removeClass('is-invalid');
-        $('#secretaries .form-message').removeClass('alert-danger');
-
-        try {
-            // Validate required fields.
-            var missingRequired = false;
-            $('#secretaries .required').each(function (index, requiredField) {
-                if (!$(requiredField).val()) {
-                    $(requiredField).addClass('is-invalid');
-                    missingRequired = true;
-                }
-            });
-            if (missingRequired) {
-                throw new Error('Fields with * are  required.');
-            }
-
-            // Validate passwords.
-            if ($('#secretary-password').val() !== $('#secretary-password-confirm').val()) {
-                $('#secretary-password, #secretary-password-confirm').addClass('is-invalid');
-                throw new Error('Passwords mismatch!');
-            }
-
-            if (
-                $('#secretary-password').val().length < BackendUsers.MIN_PASSWORD_LENGTH &&
-                $('#secretary-password').val() !== ''
-            ) {
-                $('#secretary-password, #secretary-password-confirm').addClass('is-invalid');
-                throw new Error('Password must be at least ' + BackendUsers.MIN_PASSWORD_LENGTH + ' characters long.');
-            }
-
-            // Validate user email.
-            if (!GeneralFunctions.validateEmail($('#secretary-email').val())) {
-                $('#secretary-email').addClass('is-invalid');
-                throw new Error('Invalid email address!');
-            }
-
-            // Check if username exists
-            if ($('#secretary-username').attr('already-exists') === 'true') {
-                $('#secretary-username').addClass('is-invalid');
-                throw new Error('Username already exists.');
-            }
-
-            return true;
-        } catch (error) {
-            $('#secretaries .form-message').addClass('alert-danger').text(error.message).show();
-            return false;
-        }
-    };
-
-    /**
-     * Resets the secretary tab form back to its initial state.
-     */
-    SecretariesHelper.prototype.resetForm = function () {
-        $('#filter-secretaries .selected').removeClass('selected');
-        $('#filter-secretaries button').prop('disabled', false);
-        $('#filter-secretaries .results').css('color', '');
-
-        $('#secretaries .record-details').find('input, select, textarea').val('').prop('disabled', true);
-        $('#secretaries .record-details #secretary-calendar-view').val('default');
-        $('#secretaries .record-details #secretary-timezone').val('UTC');
-        $('#secretaries .add-edit-delete-group').show();
-        $('#secretaries .save-cancel-group').hide();
-        $('#edit-secretary, #delete-secretary').prop('disabled', true);
-        $('#secretaries .form-message').hide();
-        $('#secretary-providers input:checkbox').prop('checked', false);
-        $('#secretaries .is-invalid').removeClass('is-invalid');
-    };
-
-    /**
-     * Display a secretary record into the secretary form.
-     *
-     * @param {Object} secretary Contains the secretary record data.
-     */
-    SecretariesHelper.prototype.display = function (secretary) {
-        $('#secretary-id').val(secretary.id);
-        $('#secretary-first-name').val(secretary.first_name);
-        $('#secretary-last-name').val(secretary.last_name);
-        $('#secretary-email').val(secretary.email);
-        $('#secretary-mobile-number').val(secretary.mobile_number);
-        $('#secretary-phone-number').val(secretary.phone_number);
-        $('#secretary-address').val(secretary.address);
-        $('#secretary-city').val(secretary.city);
-        $('#secretary-state').val(secretary.state);
-        $('#secretary-zip-code').val(secretary.zip_code);
-        $('#secretary-notes').val(secretary.notes);
-        $('#secretary-timezone').val(secretary.timezone);
-
-        $('#secretary-username').val(secretary.settings.username);
-        $('#secretary-calendar-view').val(secretary.settings.calendar_view);
-        $('#secretary-notifications').prop('checked', Boolean(Number(secretary.settings.notifications)));
-
-        $('#secretary-providers input:checkbox').prop('checked', false);
-
-        secretary.providers.forEach(function (secretaryProviderId) {
-            var $checkbox = $('#secretary-providers input[data-id="' + secretaryProviderId + '"]');
-
-            if (!$checkbox.length) {
-                return;
-            }
-
-            $checkbox.prop('checked', true);
-        });
-    };
-
-    /**
-     * Filters secretary records depending a string key.
-     *
-     * @param {String} key This is used to filter the secretary records of the database.
-     * @param {Numeric} selectId Optional, if provided the given ID will be selected in the filter results
-     * (only selected, not displayed).
-     * @param {Bool} display Optional (false).
-     */
-    SecretariesHelper.prototype.filter = function (key, selectId, display) {
-        display = display || false;
-
-        var url = GlobalVariables.baseUrl + '/index.php/backend_api/ajax_filter_secretaries';
-
-        var data = {
-            csrf_token: GlobalVariables.csrfToken,
-            key: key,
-            limit: this.filterLimit
-        };
-
-        $.post(url, data).done(
-            function (response) {
-                this.filterResults = response;
-
-                $('#filter-secretaries .results').empty();
-
-                response.forEach(
-                    function (secretary) {
-                        $('#filter-secretaries .results').append(this.getFilterHtml(secretary)).append($('<hr/>'));
-                    }.bind(this)
-                );
-
-                if (!response.length) {
-                    $('#filter-secretaries .results').append(
-                        $('<em/>', {
-                            'text': App.Lang.no_records_found
-                        })
-                    );
-                } else if (response.length === this.filterLimit) {
-                    $('<button/>', {
-                        'type': 'button',
-                        'class': 'btn btn-outline-secondary w-100 load-more text-center',
-                        'text': App.Lang.load_more,
-                        'click': function () {
-                            this.filterLimit += 20;
-                            this.filter(key, selectId, display);
-                        }.bind(this)
-                    }).appendTo('#filter-secretaries .results');
-                }
-
-                if (selectId) {
-                    this.select(selectId, display);
-                }
-            }.bind(this)
-        );
-    };
-
-    /**
-     * Get an secretary row html code that is going to be displayed on the filter results list.
-     *
-     * @param {Object} secretary Contains the secretary record data.
-     *
-     * @return {String} The html code that represents the record on the filter results list.
-     */
-    SecretariesHelper.prototype.getFilterHtml = function (secretary) {
-        var name = secretary.first_name + ' ' + secretary.last_name;
-
-        var info = secretary.email;
-
-        info = secretary.mobile_number ? info + ', ' + secretary.mobile_number : info;
-
-        info = secretary.phone_number ? info + ', ' + secretary.phone_number : info;
-
-        return $('<div/>', {
-            'class': 'secretary-row entry',
-            'data-id': secretary.id,
-            'html': [
-                $('<strong/>', {
-                    'text': name
-                }),
-                $('<br/>'),
-                $('<span/>', {
-                    'text': info
-                }),
-                $('<br/>')
-            ]
-        });
-    };
-
-    /**
-     * Select a specific record from the current filter results. If the secretary id does not exist
-     * in the list then no record will be selected.
-     *
-     * @param {Number} id The record id to be selected from the filter results.
-     * @param {Boolean} display Optional (false), if true the method will display the record in the form.
-     */
-    SecretariesHelper.prototype.select = function (id, display) {
-        display = display || false;
-
-        $('#filter-secretaries .selected').removeClass('selected');
-
-        $('#filter-secretaries .secretary-row[data-id="' + id + '"]').addClass('selected');
-
-        if (display) {
-            var secretary = this.filterResults.find(
-                function (filterResult) {
-                    return Number(filterResult.id) === Number(id);
-                }.bind(this)
-            );
-
-            this.display(secretary);
-
-            $('#edit-secretary, #delete-secretary').prop('disabled', false);
-        }
-    };
-
-    window.SecretariesHelper = SecretariesHelper;
-})();