/* ----------------------------------------------------------------------------
 * Easy!Appointments - Open Source Web Scheduler
 *
 * @package     EasyAppointments
 * @author      A.Tselegidis <alextselegidis@gmail.com>
 * @copyright   Copyright (c) 2013 - 2016, Alex Tselegidis
 * @license     http://opensource.org/licenses/GPL-3.0 - GPLv3
 * @link        http://easyappointments.org
 * @since       v1.0.0
 * ---------------------------------------------------------------------------- */

(function() {

    'use strict';

    /**
     * Class WorkingPlan
     *
     * Contains the working plan functionality. The working plan DOM elements must be same
     * in every page this class is used.
     *
     * @class WorkingPlan
     */
    var WorkingPlan = function() {
        /**
         * This flag is used when trying to cancel row editing. It is
         * true only whenever the user presses the cancel button.
         *
         * @type {Boolean}
         */
        this.enableCancel = false;

        /**
         * This flag determines whether the jeditables are allowed to submit. It is
         * true only whenever the user presses the save button.
         *
         * @type {Boolean}
         */
        this.enableSubmit = false;
    };

    /**
     * Setup the dom elements of a given working plan.
     *
     * @param {Object} workingPlan Contains the working hours and breaks for each day of the week.
     */
    WorkingPlan.prototype.setup = function(workingPlan) {
        $.each(workingPlan, function(index, workingDay) {
            if (workingDay != null) {
                $('#' + index).prop('checked', true);
                $('#' + index + '-start').val(workingDay.start);
                $('#' + index + '-end').val(workingDay.end);

                // Add the day's breaks on the breaks table.
                $.each(workingDay.breaks, function(i, brk) {
                    var day = this.convertValueToDay(index);

                    var tr =
                            '<tr>' +
                                '<td class="break-day editable">' + GeneralFunctions.ucaseFirstLetter(day) + '</td>' +
                                '<td class="break-start editable">' + brk.start + '</td>' +
                                '<td class="break-end editable">' + brk.end + '</td>' +
                                '<td>' +
                                    '<button type="button" class="btn btn-default btn-sm edit-break" title="' + EALang['edit'] + '">' +
                                        '<span class="glyphicon glyphicon-pencil"></span>' +
                                    '</button>' +
                                    '<button type="button" class="btn btn-default btn-sm delete-break" title="' + EALang['delete'] + '">' +
                                        '<span class="glyphicon glyphicon-remove"></span>' +
                                    '</button>' +
                                    '<button type="button" class="btn btn-default btn-sm save-break hidden" title="' + EALang['save'] + '">' +
                                        '<span class="glyphicon glyphicon-ok"></span>' +
                                    '</button>' +
                                    '<button type="button" class="btn btn-default btn-sm cancel-break hidden" title="' + EALang['cancel'] + '">' +
                                        '<span class="glyphicon glyphicon-ban-circle"></span>' +
                                    '</button>' +
                                '</td>' +
                            '</tr>';
                    $('.breaks tbody').append(tr);
                }.bind(this));
            } else {
                $('#' + index).prop('checked', false);
                $('#' + index + '-start').prop('disabled', true);
                $('#' + index + '-end').prop('disabled', true);
            }
        }.bind(this));

        // Make break cells editable.
        this.editableBreakDay($('.breaks .break-day'));
        this.editableBreakTime($('.breaks').find('.break-start, .break-end'));
    };

    /**
     * Enable editable break day.
     *
     * This method makes editable the break day cells.
     *
     * @param {Object} $selector The jquery selector ready for use.
     */
    WorkingPlan.prototype.editableBreakDay = function($selector) {
        var weekDays = {};
        weekDays[EALang['monday']] = EALang['monday']; //'Monday';
        weekDays[EALang['tuesday']] = EALang['tuesday']; //'Tuesday';
        weekDays[EALang['wednesday']] = EALang['wednesday']; //'Wednesday';
        weekDays[EALang['thursday']] = EALang['thursday']; //'Thursday';
        weekDays[EALang['friday']] = EALang['friday']; //'Friday';
        weekDays[EALang['saturday']] = EALang['saturday']; //'Saturday';
        weekDays[EALang['sunday']] = EALang['sunday']; //'Sunday';

        $selector.editable(function(value, settings) {
            return value;
        }, {
            type: 'select',
            data: weekDays,
            event: 'edit',
            height: '30px',
            submit: '<button type="button" class="hidden submit-editable">Submit</button>',
            cancel: '<button type="button" class="hidden cancel-editable">Cancel</button>',
            onblur: 'ignore',
            onreset: function(settings, td) {
                if (!this.enableCancel) {
                    return false; // disable ESC button
                }
            }.bind(this),
            onsubmit: function(settings, td) {
                if (!this.enableSubmit) {
                    return false; // disable Enter button
                }
            }.bind(this)
        });
    };

    /**
     * Enable editable break time.
     *
     * This method makes editable the break time cells.
     *
     * @param {Object} $selector The jquery selector ready for use.
     */
    WorkingPlan.prototype.editableBreakTime = function($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="hidden submit-editable">Submit</button>',
            cancel: '<button type="button" class="hidden cancel-editable">Cancel</button>',
            onblur: 'ignore',
            onreset: function(settings, td) {
                if (!this.enableCancel) {
                    return false; // disable ESC button
                }
            }.bind(this),
            onsubmit: function(settings, td) {
                if (!this.enableSubmit) {
                    return false; // disable Enter button
                }
            }.bind(this)
        });
    };

    /**
     * Binds the event handlers for the working plan dom elements.
     */
    WorkingPlan.prototype.bindEventHandlers = function() {
        /**
         * Event: Day Checkbox "Click"
         *
         * Enable or disable the time selection for each day.
         */
        $('.working-plan input[type="checkbox"]').click(function() {
            var id = $(this).attr('id');

            if ($(this).prop('checked') == true) {
                $('#' + id + '-start').prop('disabled', false).val('09:00');
                $('#' + id + '-end').prop('disabled', false).val('18:00');
            } else {
                $('#' + id + '-start').prop('disabled', true).val('');
                $('#' + id + '-end').prop('disabled', true).val('');
            }
        });

        /**
         * Event: Add Break Button "Click"
         *
         * A new row is added on the table and the user can enter the new break
         * data. After that he can either press the save or cancel button.
         */
        $('.add-break').click(function() {
            var tr =
                    '<tr>' +
                        '<td class="break-day editable">' + EALang['monday'] + '</td>' +
                        '<td class="break-start editable">09:00</td>' +
                        '<td class="break-end editable">10:00</td>' +
                        '<td>' +
                            '<button type="button" class="btn btn-default btn-sm edit-break" title="' + EALang['edit'] + '">' +
                                '<span class="glyphicon glyphicon-pencil"></span>' +
                            '</button>' +
                            '<button type="button" class="btn btn-default btn-sm delete-break" title="' + EALang['delete'] + '">' +
                                '<span class="glyphicon glyphicon-remove"></span>' +
                            '</button>' +
                            '<button type="button" class="btn btn-default btn-sm save-break hidden" title="' + EALang['save'] + '">' +
                                '<span class="glyphicon glyphicon-ok"></span>' +
                            '</button>' +
                            '<button type="button" class="btn btn-default btn-sm cancel-break hidden" title="' + EALang['cancel'] + '">' +
                                '<span class="glyphicon glyphicon-ban-circle"></span>' +
                            '</button>' +
                        '</td>' +
                    '</tr>';
            $('.breaks').prepend(tr);

            // Bind editable and event handlers.
            tr = $('.breaks tr')[1];
            this.editableBreakDay($(tr).find('.break-day'));
            this.editableBreakTime($(tr).find('.break-start, .break-end'));
            $(tr).find('.edit-break').trigger('click');
            $('.add-break').prop('disabled', true);
        }.bind(this));

        /**
         * Event: Edit Break Button "Click"
         *
         * Enables the row editing for the "Breaks" table rows.
         */
        $(document).on('click', '.edit-break', function() {
            // Reset previous editable tds
            var $previousEdt = $(this).closest('table').find('.editable').get();
            $.each($previousEdt, function(index, editable) {
                if (editable.reset !== undefined) {
                    editable.reset();
                }
            });

            // Make all cells in current row editable.
            $(this).parent().parent().children().trigger('edit');
            $(this).parent().parent().find('.break-start input, .break-end input').timepicker({
                currentText: EALang['now'],
                closeText: EALang['close'],
                timeOnlyTitle: EALang['select_time'],
                timeText: EALang['time'],
                hourText: EALang['hour'],
                minuteText: EALang['minutes']
            });
            $(this).parent().parent().find('.break-day select').focus();

            // Show save - cancel buttons.
            $(this).closest('table').find('.edit-break, .delete-break').addClass('hidden');
            $(this).parent().find('.save-break, .cancel-break').removeClass('hidden');

            $('.add-break').prop('disabled', true);
        });

        /**
         * Event: Delete Break Button "Click"
         *
         * Removes the current line from the "Breaks" table.
         */
        $(document).on('click', '.delete-break', function() {
           $(this).parent().parent().remove();
        });

        /**
         * Event: Cancel Break Button "Click"
         *
         * Bring the ".breaks" table back to its initial state.
         *
         * @param {jQuery.Event} e
         */
        $(document).on('click', '.cancel-break', function(e) {
            var element = e.target;
            this.enableCancel = true;
            $(element).parent().parent().find('.cancel-editable').trigger('click');
            this.enableCancel = false;

            $(element).closest('table').find('.edit-break, .delete-break').removeClass('hidden');
            $(element).parent().find('.save-break, .cancel-break').addClass('hidden');
            $('.add-break').prop('disabled', false);
        }.bind(this));

        /**
         * Event: Save Break Button "Click"
         *
         * Save the editable values and restore the table to its initial state.
         *
         * @param {jQuery.Event} e
         *
         * @todo: Prevent from adding interrelated breaks
         */
        $(document).on('click', '.save-break', function(e) {
            // Break's start time must always be prior to break's end.
            var element = e.target,
                $editedTr = $(element).closest('tr'),
                start = Date.parse($editedTr.find('.break-start input').val()),
                end = Date.parse($editedTr.find('.break-end input').val());

            if (start > end) {
                $editedTr.find('.break-end input').val(start.addHours(1).toString('HH:mm'));
            }

            this.enableSubmit = true;
            $editedTr.find('.editable .submit-editable').trigger('click');
            this.enableSubmit = false;

            $editedTr.find('.save-break, .cancel-break').addClass('hidden');
            $(element).closest('table').find('.edit-break, .delete-break').removeClass('hidden');
            $('.add-break').prop('disabled', false);
        }.bind(this));
    };

    /**
     * Get the working plan settings.
     *
     * @return {Object} Returns the working plan settings object.
     *
     * @todo: Add sorting by range within day breaks
     */
    WorkingPlan.prototype.get = function() {
        var workingPlan = {};
        $('.working-plan input[type="checkbox"]').each(function(index, checkbox) {
            var id = $(checkbox).attr('id');
            if ($(checkbox).prop('checked') == true) {
                workingPlan[id] = {};
                workingPlan[id].start = $('#' + id + '-start').val();
                workingPlan[id].end = $('#' + id + '-end').val();
                workingPlan[id].breaks = [];

                $('.breaks tr').each(function(index, tr) {
                    var day = this.convertDayToValue($(tr).find('.break-day').text());
                    if (day == id) {
                        var start = $(tr).find('.break-start').text(),
                            end = $(tr).find('.break-end').text();

                        workingPlan[id].breaks.push({
                            'start': start,
                            'end': end
                        });
                    }

                    workingPlan[id].breaks.sort(function(break1, break2) {
                        // We can do a direct string comparison since we have time based on 24 hours clock
                        return break1.start - break2.start;
                    });
                }.bind(this));
            } else {
                workingPlan[id] = null;
            }
        }.bind(this));

        return workingPlan;
    };

    /**
     * Enables or disables the timepicker functionality from the working plan input text fields.
     *
     * @param {Boolean} disabled (OPTIONAL = false) If true then the timepickers will be disabled.
     */
    WorkingPlan.prototype.timepickers = function(disabled) {
        disabled = disabled || false;

        if (disabled == false) {
            // Set timepickers where needed.
            $('.working-plan input[type="text"]').timepicker({
                timeFormat: 'HH:mm',

                currentText: EALang['now'],
                closeText: EALang['close'],
                timeOnlyTitle: EALang['select_time'],
                timeText: EALang['time'],
                hourText: EALang['hour'],
                minuteText: EALang['minutes'],

                onSelect: function(datetime, inst) {
                    // Start time must be earlier than end time.
                    var start = Date.parse($(this).parent().parent().find('.work-start').val()),
                        end = Date.parse($(this).parent().parent().find('.work-end').val());

                    if (start > end) {
                        $(this).parent().parent().find('.work-end').val(start.addHours(1).toString('HH:mm'));
                    }
                }
            });
        } else {
            $('.working-plan input').timepicker('destroy');
        }
    };

    /**
     * Reset the current plan back to the company's default working plan.
     */
    WorkingPlan.prototype.reset = function() {

    };

    /**
     * This is necessary for translated days.
     *
     * @param {String} value Day value could be like "monday", "tuesday" etc.
     */
    WorkingPlan.prototype.convertValueToDay = function(value) {
        switch (value) {
            case 'monday':
                return EALang['monday'];
                break;
            case 'tuesday':
                return EALang['tuesday'];
                break;
            case 'wednesday':
                return EALang['wednesday'];
                break;
            case 'thursday':
                return EALang['thursday'];
                break;
            case 'friday':
                return EALang['friday'];
                break;
            case 'saturday':
                return EALang['saturday'];
                break;
            case 'sunday':
                return EALang['sunday'];
                break;
        }
    };

    /**
     * This is necessary for translated days.
     *
     * @param {String} value Day value could be like "Monday", "Tuesday" etc.
     */
    WorkingPlan.prototype.convertDayToValue = function(day) {
        switch (day) {
            case EALang['monday']:
                return 'monday';
                break;
            case EALang['tuesday']:
                return 'tuesday';
                break;
            case EALang['wednesday']:
                return 'wednesday';
                break;
            case EALang['thursday']:
                return 'thursday';
                break;
            case EALang['friday']:
                return 'friday';
                break;
            case EALang['saturday']:
                return 'saturday';
                break;
            case EALang['sunday']:
                return 'sunday';
                break;
        }
    };

    window.WorkingPlan = WorkingPlan;

})();