<?php
/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */
namespace Piwik\Plugins\TagManager\Dao;


use Piwik\Db;
use Piwik\DbHelper;
use Piwik\Piwik;
use Exception;
use Piwik\Plugins\TagManager\Input\Name;
use Piwik\Plugins\TagManager\Model\Tag;

class TagsDao extends BaseDao implements TagManagerDao
{
    protected $table = 'tagmanager_tag';

    public function install()
    {
        DbHelper::createTable($this->table, "
                  `idtag` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
                  `idcontainerversion` BIGINT UNSIGNED NOT NULL,
                  `idsite` int(11) UNSIGNED NOT NULL,
                  `type` VARCHAR(50) NOT NULL,
                  `name` VARCHAR(" . Name::MAX_LENGTH . ") NOT NULL,
                  `status` VARCHAR(10) NOT NULL,
                  `parameters` MEDIUMTEXT NOT NULL DEFAULT '',
                  `fire_trigger_ids` TEXT NOT NULL DEFAULT '',
                  `block_trigger_ids` TEXT NOT NULL DEFAULT '',
                  `fire_limit` VARCHAR(20) NOT NULL DEFAULT '" . Tag::FIRE_LIMIT_UNLIMITED . "',
                  `priority` SMALLINT(5) UNSIGNED NOT NULL,
                  `fire_delay` MEDIUMINT UNSIGNED NOT NULL DEFAULT 0,
                  `start_date` DATETIME DEFAULT NULL,
                  `end_date` DATETIME DEFAULT NULL,
                  `created_date` DATETIME NOT NULL,
                  `updated_date` DATETIME NOT NULL,
                  `deleted_date` DATETIME NULL,
                  PRIMARY KEY(`idtag`), KEY (`idsite`, `idcontainerversion`)");
        // we cannot set a unique key on (`idsite`, `idcontainerversion`, `name`) because we soft delete tags and want to make sure names can be used again after deleting an entry
    }

    private function isNameInUse($idSite, $idContainerVersion, $name, $exceptIdTag = null)
    {
        $sql = sprintf("SELECT idtag FROM %s WHERE idsite = ? AND idcontainerversion = ? AND `name` = ? AND status = ?", $this->tablePrefixed);
        $bind = array($idSite, $idContainerVersion, $name, self::STATUS_ACTIVE);

        if (!empty($exceptIdTag)) {
            $sql .= ' AND idtag != ?';
            $bind[] = $exceptIdTag;
        }

        $idSite = Db::fetchOne($sql, $bind);
        return !empty($idSite);
    }

    public function createTag($idSite, $idContainerVersion, $type, $name, $parameters, $fireTriggerIds, $blockTriggerIds, $fireLimit, $fireDelay, $priority, $startDate, $endDate, $createdDate)
    {
        if ($this->isNameInUse($idSite, $idContainerVersion, $name)) {
            throw new Exception(Piwik::translate('TagManager_ErrorNameDuplicate'));
        }

        $values = array(
            'idsite' => $idSite,
            'idcontainerversion' => $idContainerVersion,
            'status' => self::STATUS_ACTIVE,
            'type' => $type,
            'name' => $name,
            'parameters' => $parameters,
            'fire_trigger_ids' => $fireTriggerIds,
            'block_trigger_ids' => $blockTriggerIds,
            'fire_limit' => $fireLimit,
            'fire_delay' => $fireDelay,
            'priority' => $priority,
            'start_date' => empty($startDate) ? null : $startDate,
            'end_date' => empty($endDate) ? null : $endDate,
            'created_date' => $createdDate,
            'updated_date' => $createdDate,
        );

        $values = $this->encodeFieldsWhereNeeded($values);

        return $this->insertRecord($values);
    }

    public function updateTagColumns($idSite, $idContainerVersion, $idTag, $columns)
    {
        $columns = $this->encodeFieldsWhereNeeded($columns);

        if (!empty($columns)) {
            if (isset($columns['name']) && $this->isNameInUse($idSite, $idContainerVersion, $columns['name'], $idTag)) {
                throw new Exception(Piwik::translate('TagManager_ErrorNameDuplicate'));
            }

            $this->updateEntity($columns, ['idsite' => (int)$idSite, 'idcontainerversion' => (int)$idContainerVersion, 'idtag' => (int)$idTag]);
        }
    }

    private function encodeFieldsWhereNeeded($columns)
    {
        if (!empty($columns['fire_trigger_ids'])) {
            $columns['fire_trigger_ids'] = json_encode($columns['fire_trigger_ids']);
        } elseif (isset($columns['fire_trigger_ids'])) {
            $columns['fire_trigger_ids'] = '';
        }

        if (!empty($columns['block_trigger_ids'])) {
            $columns['block_trigger_ids'] = json_encode($columns['block_trigger_ids']);
        } elseif (isset($columns['block_trigger_ids'])) {
            $columns['block_trigger_ids'] = '';
        }

        if (!empty($columns['parameters'])) {
            $columns['parameters'] = json_encode($columns['parameters']);
        } elseif (isset($columns['parameters'])) {
            $columns['parameters'] = '';
        }

        return $columns;
    }

    public function getAllTags()
    {
        $tags = Db::fetchAll('SELECT * FROM ' . $this->tablePrefixed . ' ORDER BY idtag ASC');
        return $this->enrichTags($tags);
    }

    /**
     * @param int $idSite
     * @param int $idContainerVersion
     * @return array
     */
    public function getContainerTags($idSite, $idContainerVersion)
    {
        $bind = [self::STATUS_ACTIVE, $idSite, $idContainerVersion];

        $table = $this->tablePrefixed;
        $tags = Db::fetchAll("SELECT * FROM $table WHERE status = ? AND idsite = ? and idcontainerversion = ? ORDER BY priority, created_date ASC", $bind);

        return $this->enrichTags($tags);
    }

    /**
     * @param $idSite
     * @param $idContainerVersion
     * @param $idTag
     * @return array|false
     * @throws \Exception
     */
    public function getContainerTag($idSite, $idContainerVersion, $idTag)
    {
        $table = $this->tablePrefixed;
        $bind = array(self::STATUS_ACTIVE, $idTag, $idContainerVersion, $idSite);
        $tag = Db::fetchRow("SELECT * FROM $table WHERE status = ? and idtag = ? and idcontainerversion = ? and idsite = ?", $bind);

        return $this->enrichTag($tag);
    }

    /**
     * @param int $idSite
     * @param string $deletedDate
     */
    public function deleteTagsForSite($idSite, $deletedDate)
    {
        $table = $this->tablePrefixed;

        $query = "UPDATE $table SET status = ?, deleted_date = ? WHERE idsite = ? and status != ?";
        $bind = array(self::STATUS_DELETED, $deletedDate, $idSite, self::STATUS_DELETED);

        Db::query($query, $bind);
    }

    /**
     * @param int $idSite
     * @param int $idContainerVersion
     * @param int $idTag
     * @param string $deletedDate
     */
    public function deleteContainerTag($idSite, $idContainerVersion, $idTag, $deletedDate)
    {
        $table = $this->tablePrefixed;

        $query = "UPDATE $table SET status = ?, deleted_date = ? WHERE idsite = ? and idcontainerversion = ? and idtag = ? and status != ?";
        $bind = array(self::STATUS_DELETED, $deletedDate, $idSite, $idContainerVersion, $idTag, self::STATUS_DELETED);

        Db::query($query, $bind);
    }

    private function enrichTags($tags)
    {
        if (empty($tags)) {
            return array();
        }

        foreach ($tags as $index => $tag) {
            $tags[$index] = $this->enrichTag($tag);
        }

        usort($tags, function ($tagA, $tagB) use ($tags) {
            if ($tagA['priority'] === $tagB['priority']) {
                // for php5 making sure to have same sort order as on php7
                $indexA = array_search($tagA, $tags);
                $indexB = array_search($tagB, $tags);
                return $indexA - $indexB;
            }
            return $tagA['priority'] > $tagB['priority'];
        });

        return $tags;
    }

    private function enrichTag($tag)
    {
        if (empty($tag)) {
            return $tag;
        }

        $tag['idtag'] = (int) $tag['idtag'];
        $tag['idsite'] = (int) $tag['idsite'];
        $tag['idcontainerversion'] = (int) $tag['idcontainerversion'];
        $tag['fire_delay'] = (int)$tag['fire_delay'];
        $tag['priority'] = (int)$tag['priority'];
        
        if ($tag['start_date'] === '0000-00-00 00:00:00') {
            $tag['start_date'] = null;
        }
        if ($tag['end_date'] === '0000-00-00 00:00:00') {
            $tag['end_date'] = null;
        }

        if (!empty($tag['parameters'])) {
            $tag['parameters'] = json_decode($tag['parameters'], true);
        }
        if (empty($tag['parameters'])) {
            $tag['parameters'] = [];
        }

        if (!empty($tag['fire_trigger_ids'])) {
            $tag['fire_trigger_ids'] = json_decode($tag['fire_trigger_ids'], true);
        }
        if (empty($tag['fire_trigger_ids'])) {
            $tag['fire_trigger_ids'] = [];
        } else {
            $tag['fire_trigger_ids'] = array_map('intval', $tag['fire_trigger_ids']);
        }

        if (!empty($tag['block_trigger_ids'])) {
            $tag['block_trigger_ids'] = json_decode($tag['block_trigger_ids'], true);
        }
        if (empty($tag['block_trigger_ids'])) {
            $tag['block_trigger_ids'] = [];
        } else {
            $tag['block_trigger_ids'] = array_map('intval', $tag['block_trigger_ids']);
        }

        return $tag;
    }
}

