<?php

    /**
     * The Legend of Z
     *
     * @author      Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
     * @copyright   2014 Heinrich-Heine-Universität Düsseldorf
     * @license     http://www.gnu.org/licenses/gpl.html
     * @link        https://bitbucket.org/coderkun/the-legend-of-z
     */

    namespace hhu\z\questtypes;


    /**
     * Model of the TextinputQuesttypeAgent for inserting text.
     *
     * @author  Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
     */
    class TextinputQuesttypeModel extends \hhu\z\models\QuesttypeModel
    {


        /**
         * Copy a Quest
         *
         * @param   int $userId             ID of creating user
         * @param   int $sourceQuestId      ID of Quest to copy from
         * @param   int $targetQuestId      ID of Quest to copy to
         * @param   int $seminaryMediaIds   Mapping of SeminaryMedia-IDs from source Seminary to targetSeminary
         */
        public function copyQuest($userId, $sourceQuestId, $targetQuestId, $seminaryMediaIds)
        {
            // Copy textinput
            $this->db->query(
                'INSERT INTO questtypes_textinput '.
                '(quest_id, created_user_id, text) '.
                'SELECT ?, ?, text '.
                'FROM questtypes_textinput '.
                'WHERE quest_id = ?',
                'iii',
                $targetQuestId, $userId,
                $sourceQuestId
            );

            // Copy fields
            $this->db->query(
                'INSERT INTO questtypes_textinput_fields '.
                '(questtypes_textinput_quest_id, number, questtypes_textinput_fieldsize_id, regex) '.
                'SELECT ?, number, questtypes_textinput_fieldsize_id, regex '.
                'FROM questtypes_textinput_fields '.
                'WHERE questtypes_textinput_quest_id = ?',
                'ii',
                $targetQuestId,
                $sourceQuestId
            );
        }


        /**
         * Get textinput-text for a Quest.
         *
         * @param   int $questId    ID of Quest
         * @return  array           Textinput-text
         */
        public function getTextinputQuest($questId)
        {
            $data = $this->db->query(
                'SELECT text '.
                'FROM questtypes_textinput '.
                'WHERE quest_id = ?',
                'i',
                $questId
            );
            if(!empty($data)) {
                return $data[0];
            }


            return null;
        }


        /**
         * Get fields for a textinput-text.
         *
         * @param   int $questId    ID of Quest
         * @return  array           Fields
         */
        public function getTextinputFields($questId)
        {
            return $this->db->query(
                'SELECT fields.id, fields.number, fields.regex, fieldsizes.id AS fieldsize_id, fieldsizes.size '.
                'FROM questtypes_textinput_fields AS fields '.
                'LEFT JOIN questtypes_textinput_fieldsizes AS fieldsizes ON fieldsizes.id = fields.questtypes_textinput_fieldsize_id '.
                'WHERE fields.questtypes_textinput_quest_id = ? '.
                'ORDER BY fields.number ASC',
                'i',
                $questId
            );
        }


        /**
         * Save Character’s submitted answer for one textinput field.
         *
         * @param   int $fieldId    ID of field
         * @param   int $characterId    ID of Character
         * @param   string  $answer     Submitted answer for this field
         */
        public function setCharacterSubmission($fieldId, $characterId, $answer)
        {
            $this->db->query(
                'INSERT INTO questtypes_textinput_fields_characters '.
                '(questtypes_textinput_field_id, character_id, value) '.
                'VALUES '.
                '(?, ?, ?) '.
                'ON DUPLICATE KEY UPDATE '.
                'value = ?',
                'iiss',
                $fieldId, $characterId, $answer, $answer
            );
        }


        /**
         * Get answer of one input field submitted by Character.
         *
         * @param   int $fieldId    ID of field
         * @param   int $characterId    ID of Character
         * @return  string          Submitted answer for this field or empty string
         */
        public function getCharacterSubmission($fieldId, $characterId)
        {
            $data = $this->db->query(
                'SELECT value '.
                'FROM questtypes_textinput_fields_characters '.
                'WHERE questtypes_textinput_field_id = ? AND character_id = ? ',
                'ii',
                $fieldId, $characterId
            );
            if(!empty($data)) {
                return $data[0]['value'];
            }


            return '';
        }


        /**
         * Set the text for a Quest and correct fields count.
         *
         * @param   int $userId     ID of user setting text
         * @param   int $questId    ID of Quest to set text for
         * @param   string  $text       Text for Quest
         */
        public function setTextForQuest($userId, $questId, $text)
        {
            $this->db->setAutocommit(false);
            try {
                // Set text
                $this->db->query(
                    'INSERT INTO questtypes_textinput '.
                    '(quest_id, created_user_id, text) '.
                    'VALUES '.
                    '(?, ?, ?) '.
                    'ON DUPLICATE KEY UPDATE '.
                    'text = ?',
                    'iiss',
                    $questId,
                    $userId,
                    $text,
                    $text
                );

                // Count fields
                $fieldCount = substr_count($text, '[textinput]');

                // Remove fields
                $this->db->query(
                    'DELETE FROM questtypes_textinput_fields '.
                    'WHERE questtypes_textinput_quest_id = ? AND number > ?',
                    'ii',
                    $questId,
                    $fieldCount
                );

                // Add fields
                for($i=1; $i<=$fieldCount; $i++)
                {
                    $this->db->query(
                        'INSERT IGNORE INTO questtypes_textinput_fields '.
                        '(questtypes_textinput_quest_id, number, regex) '.
                        'VALUES '.
                        '(?, ?, ?) ',
                        'iis',
                        $questId,
                        $i,
                        ''
                    );
                }

                $this->db->commit();
            }
            catch(\Exception $e) {
                $this->db->rollback();
                $this->db->setAutocommit(true);
                throw $e;
            }

            $this->db->setAutocommit(true);
        }


        /**
         * Set values for a field of a text.
         *
         * @param   int $questId    ID of Quest to set field for
         * @param   int $number     Field number
         * @param   int $sizeId     ID of field size
         * @param   string  $regex      RegEx for field
         */
        public function setFieldForText($questId, $number, $sizeId, $regex)
        {
            $this->db->query(
                'UPDATE questtypes_textinput_fields '.
                'SET questtypes_textinput_fieldsize_id = ?, regex = ? '.
                'WHERE questtypes_textinput_quest_id = ? AND number = ?',
                'isii',
                $sizeId,
                $regex,
                $questId,
                $number
            );
        }


        /**
         * Get all registered field sizes.
         *
         * @return  List of field sizes
         */
        public function getFieldSizes()
        {
            return $this->db->query(
                'SELECT id, size '.
                'FROM questtypes_textinput_fieldsizes '.
                'ORDER BY size'
            );
        }

    }

?>