<?php

class fieldDate extends cmsFormField {

    public $title       = LANG_PARSER_DATE;
    public $sql         = 'timestamp NULL DEFAULT NULL';
    public $filter_type = 'date';
    public $filter_hint = LANG_PARSER_DATE_FILTER_HINT;
    public $var_type    = 'string';

    public function getOptions() {
        return [
            new fieldCheckbox('show_time', [
                'title'           => LANG_PARSER_DATE_SHOW_TIME,
                'default'         => false,
                'extended_option' => true
            ]),
            new fieldCheckbox('filter_range', [
                'title'   => LANG_PARSER_NUMBER_FILTER_RANGE,
                'default' => true
            ])
        ];
    }

    public function getRules() {

        if ($this->context === 'filter' && $this->getOption('filter_range')) {
            $this->rules[] = ['date_range'];
        } else {
            $this->rules[] = ['date'];
        }

        return $this->rules;
    }

    public function parse($value) {
        return $value ? html_date($value, $this->getOption('show_time')) : '';
    }

    public function getStringValue($value) {

        if (!$value) { return ''; }

        if (is_array($value)) {

            $result_string = '';

            if (!empty($value['from'])) {
                $result_string .= LANG_FROM . ' ' . $this->getStringValue($value['from']) . ' ';
            }

            if (!empty($value['to'])) {
                $result_string .= LANG_TO . ' ' . $this->getStringValue($value['to']);
            }

            return $result_string;
        }

        return date(cmsConfig::get('date_format'), strtotime($value));
    }

    public function getFilterInput($value) {

        if ($this->getOption('filter_range')) {

            $from = !empty($value['from']) ? date('d.m.Y', strtotime($value['from'])) : false;
            $to   = !empty($value['to']) ? date('d.m.Y', strtotime($value['to'])) : false;

            if (!$this->show_filter_input_title) {
                $this->title = false;
            }

            return cmsTemplate::getInstance()->renderFormField($this->class . '_range', [
                'field' => $this,
                'from'  => $from,
                'to'    => $to
            ]);
        } else {
            return parent::getFilterInput($value);
        }
    }

    public function applyFilter($model, $value) {

        if (!is_array($value) || !empty($value['date'])) {

            if (!empty($value['date'])) {
                $value = sprintf('%s %02d:%02d', $value['date'], $value['hours'], $value['mins']);
            }

            $date_start = date('Y-m-d', strtotime($value));
            $date_final = date('Y-m-d', strtotime($value) + 60 * 60 * 24);

            return $model->filterBetween($this->name, $date_start, $date_final);

        } elseif (!empty($value['from']) || !empty($value['to'])) {

            if (!empty($value['from'])) {
                $model->filterGtEqual($this->name, date('Y-m-d', strtotime($value['from'])));
            }
            if (!empty($value['to'])) {
                $model->filterLtEqual($this->name, date('Y-m-d', strtotime($value['to']) + 60 * 60 * 24));
            }

            return $model;
        }

        return parent::applyFilter($model, $value);
    }

    public function getDefaultVarType($is_filter = false) {

        if ($this->context === 'filter') {
            $is_filter = true;
        }

        if (($is_filter && $this->getOption('filter_range')) || $this->getOption('show_time')) {
            $this->var_type = 'array';
        }

        return parent::getDefaultVarType($is_filter);
    }

    public function store($value, $is_submitted, $old_value = null) {

        // Если ячейка в БД начинается на date_, то cmsDatabase в prepareValue
        // null будет CURRENT_TIMESTAMP
        $default_null = strpos($this->name, 'date_') === 0 ? 0 : null;

        if (!$value) { return $default_null; }

        if (!is_array($value) || !empty($value['date'])) {

            if (is_array($value)) {
                if (!empty($value['date'])) {
                    $value = sprintf('%s %02d:%02d', $value['date'], $value['hours'], $value['mins']);
                    return date('Y-m-d H:i:s', strtotime($value));
                }
            } else {
                return date('Y-m-d', strtotime($value));
            }
        } elseif (!empty($value['from']) || !empty($value['to'])) {

            if (!empty($value['from'])) {
                $value['from'] = $this->store($value['from'], $is_submitted, $old_value);
            }
            if (!empty($value['to'])) {
                $value['to'] = $this->store($value['to'], $is_submitted, $old_value);
            }

            return $value;
        }

        return $default_null;
    }

    public function storeFilter($value) {
        return $this->store($value, false);
    }

    public function getInput($value) {

        if ($value) {
            if (is_array($value)) {
                if (!empty($value['date'])) {
                    $value = sprintf('%s %02d:%02d', $value['date'], $value['hours'], $value['mins']);
                } else {
                    $value = null;
                }
            }
        }

        $this->data['show_time'] = $this->getOption('show_time');

        $this->data['date'] = $value ? date('d.m.Y', strtotime($value)) : '';

        if ($this->data['show_time']) {
            if (!$value) {
                $this->data['hours'] = 0;
                $this->data['mins']  = 0;
            } else {
                list($this->data['hours'], $this->data['mins']) = explode(':', date('H:i', strtotime($value)));
            }
            $this->data['fname_date']  = $this->element_name . '[date]';
            $this->data['fname_hours'] = $this->element_name . '[hours]';
            $this->data['fname_mins']  = $this->element_name . '[mins]';
        } else {
            $this->data['fname_date'] = $this->element_name;
        }

        return parent::getInput($value);
    }

}