<?php
/**
 * OnlyOfficeTemplates model: list templates by module, get from S3, merge, convert.
 */

class OnlyOfficeTemplates_Model
{
    protected $db;
    protected $config;

    public function __construct()
    {
        $this->db = PearDatabase::getInstance();
        require_once dirname(__DIR__) . '/config.php';
        $this->config = OnlyOfficeTemplates_getConfig();
    }

    /**
     * List templates available for a module (and current user).
     *
     * @param string $module
     * @return array [ ['id' =>, 'name' =>, 'file_name' =>, 'module' =>], ... ]
     */
    public function getTemplatesByModule($module)
    {
        $userId = Users_Record_Model::getCurrentUserModel()->getId();
        $sql = "SELECT id, name, module, file_name, s3_key, owner, created_at 
                FROM vtiger_oot_templates 
                WHERE module = ? AND (owner = ? OR owner IN (SELECT groupid FROM vtiger_users2group WHERE userid = ?))
                ORDER BY name";
        $res = $this->db->pquery($sql, [$module, $userId, $userId]);
        $list = [];
        while ($row = $this->db->fetchByAssoc($res)) {
            $list[] = [
                'id' => (int)$row['id'],
                'name' => $row['name'],
                'module' => $row['module'],
                'file_name' => $row['file_name'],
                's3_key' => $row['s3_key'],
                'owner' => (int)$row['owner'],
                'created_at' => $row['created_at'],
            ];
        }
        return $list;
    }

    /**
     * Get one template by id (with permission check).
     *
     * @param int $templateId
     * @return array|null
     */
    public function getTemplateById($templateId)
    {
        $userId = Users_Record_Model::getCurrentUserModel()->getId();
        $res = $this->db->pquery(
            "SELECT id, name, module, s3_key, file_name, owner FROM vtiger_oot_templates WHERE id = ? AND (owner = ? OR owner IN (SELECT groupid FROM vtiger_users2group WHERE userid = ?))",
            [$templateId, $userId, $userId]
        );
        if ($this->db->num_rows($res) === 0) {
            return null;
        }
        return $this->db->fetchByAssoc($res);
    }

    /**
     * Save template metadata and S3 key (after upload).
     *
     * @param string $name
     * @param string $module
     * @param string $s3Key
     * @param string $fileName
     * @param int $owner
     * @return int new template id
     */
    public function saveTemplate($name, $module, $s3Key, $fileName, $owner = null)
    {
        if ($owner === null) {
            $owner = Users_Record_Model::getCurrentUserModel()->getId();
        }
        $this->db->pquery("INSERT INTO vtiger_oot_templates (name, module, s3_key, file_name, owner, created_at) VALUES (?,?,?,?,?,NOW())",
            [$name, $module, $s3Key, $fileName, $owner]);
        $id = $this->db->getLastInsertID();
        return $id ? (int)$id : (int)$this->db->query_result($this->db->pquery("SELECT MAX(id) AS n FROM vtiger_oot_templates", []), 0, 'n');
    }

    /**
     * Delete template record and optionally S3 object (caller can delete object).
     *
     * @param int $templateId
     * @return bool
     */
    public function deleteTemplate($templateId)
    {
        $t = $this->getTemplateById($templateId);
        if (!$t) {
            return false;
        }
        $this->db->pquery("DELETE FROM vtiger_oot_templates WHERE id = ?", [$templateId]);
        return true;
    }

    /**
     * Get config (S3 prefix, bucket, OnlyOffice URL).
     *
     * @return array
     */
    public function getConfig()
    {
        return $this->config;
    }

    /**
     * Get next id for template (for S3 path).
     *
     * @return int
     */
    public function getNextTemplateId()
    {
        $this->db->pquery("UPDATE vtiger_oot_templates_seq SET id = LAST_INSERT_ID(id + 1)", []);
        $r = $this->db->pquery("SELECT LAST_INSERT_ID() AS n", []);
        return (int)$this->db->query_result($r, 0, 'n');
    }
}