<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Event_file_attachment_model extends CI_Model {

    var $column_order = array(null, 'attachment_type'); //set column field database for datatable orderable
    var $column_search = array('description'); //set column field database for datatable searchable just firstname , lastname , address are searchable
    var $order = array('attachment_type' => 'asc'); // default order

    public function __construct() {
        parent::__construct();
    }

    public function disableOlderFileAttachment ($event_id, $mime_type, $attachment_type) {
        $max_num_event_file_attachments = 2;

        // Eg. image
        $file_type =  explode('/', $mime_type)[0];

        $existing_file_attachments = $this->db->where([
            "event_id"  =>  $event_id,
            "attachment_type" => $attachment_type,
            "status" => '1',
        ])
        ->like('mime_type', $file_type)
        ->order_by('date_added', 'DESC')
        ->get('event_file_attachment');

        $last_active_file_attachment = $existing_file_attachments->num_rows() > 0
            ? $existing_file_attachments->row() 
            : null;

        // Exit the function if existing_file_attachments has not reached the max
        if ($existing_file_attachments->num_rows() < $max_num_event_file_attachments) return $last_active_file_attachment;

        // Get the oldest active file attachment with same event_id, attachment_type, and mime_type
        $oldest_active_file_attachment = $this->db->where([
            "event_id"  =>  $event_id,
            "attachment_type" => $attachment_type,
            "status" => '1',
        ])
        ->like('mime_type', $file_type)
        ->order_by('date_added', 'ASC')
        ->get('event_file_attachment')->row();

        // Disable status
        $this->db->set('status', '0')
            ->where(['attachment_id' => $oldest_active_file_attachment->id])
            ->update('event_file_attachment');

        return $last_active_file_attachment;
    }

    /*private function _get_datatables_query($data_source, $event_id){
        $this->db->select("
            attachment_id,
            event_id,
            description,
            file_name,
            file_size,
            mime_type,
            attachment_type")
            ->select("(CASE
                  WHEN added_by IS NULL THEN 'Unknown'
                  ELSE (SELECT CONCAT(first_name,' ',last_name) as added_by FROM user WHERE user_id = added_by)
                END) AS added_by", FALSE)
            // ->select("(SELECT CONCAT(efas.setup_id,',',efas.autoplay_vaudio,',', efas.preview_default_image) as file_setup
            //      FROM event_file_attachment_setup efas
            //     WHERE efas.attachment_id = attachment_id
            // ) AS file_setup", FALSE)
            // ->select("(SELECT
            //     GROUP_CONCAT(CONCAT('{\"setup_id\":\"',efas.setup_id,
            //     '\", \"autoplay_vaudio\":\"',efas.autoplay_vaudio,
            //     '\", \"preview_default_image\":\"',efas.preview_default_image,'\"}'
            // ) ORDER BY efas.attachment_id SEPARATOR ',') as file_setup
            //      FROM event_file_attachment_setup efas
            //     WHERE efas.attachment_id = attachment_id
            // ) AS file_setup", FALSE)
            ->select("DATE_FORMAT(date_added, '%d/%m/%Y %Hh%i') AS date_added", FALSE)
            ->from("event_file_attachment")
            ->where("event_id", $event_id)
            // ->where("status IN(1,2)");
            ->where("status", 1);

        $i = 0;
        foreach ($this->column_search as $item) {// loop column
            if ($data_source['search']['value']) {  // if datatable send POST for search
                if ($i === 0) { // first loop
                    $this->db->like($item, $data_source['search']['value']);
                } else {
                    $this->db->or_like($item, $data_source['search']['value']);
                }
            }
            $i++;
        }

        if(isset($data_source['order'])) { // here order processing
            if(isset($data_source['order']['0']['dir']) && !empty($data_source['order']['0']['dir'])) {
                $this->db->order_by($this->column_order[$data_source['order']['0']['column']], $data_source['order']['0']['dir']);
            }
        } else if(isset($this->order)) {
            $order = $this->order;
            $this->db->order_by(key($order), $order[key($order)]);
        }
    }
    public function get_datatables($data_source, $event_id){
        $this->_get_datatables_query($data_source, $event_id);
        if($data_source['length'] != -1)
            $this->db->limit($data_source['length'], $data_source['start']);
        $query = $this->db->get();
        return $query->result();
    }
    public function count_filtered($data_source, $event_id){
        $this->_get_datatables_query($data_source, $event_id);
        $query = $this->db->get();
        return $query->num_rows();
    }

    public function count_all($data_source, $event_id){
        $this->_get_datatables_query($data_source, $event_id);
        return $this->db->count_all_results();
    }
    public function delete_event_attachment($attachment_id=0){

        if($attachment_id){

            $this->db->where("attachment_id", $attachment_id);
            $this->db->update("event_file_attachment", array("status" => 3));
            return $this->db->affected_rows();

        } else {
            return false;
        }
    }
    */
    public function _reset_attachment($event_id){
        $this->db->where("status" , 2);
        $this->db->where("event_id", $event_id);
        $this->db->update("event_file_attachment", array("status" => 0));

        //set deleted image( status = 3) to 0 status
        $this->update_event_attachment_status("event_id",$event_id,"event_file_attachment",["status" => 0], "status", 3);
    }
    public function attachment_type_action($event_id){

        //update new attachments
        $this->event_file_attachment_model->update_attachment_status_by_type($event_id);

        //set deleted image( status = 3) to 0 status
        $this->update_event_attachment_status("event_id",$event_id,"event_file_attachment",["status" => 0], "status", 3);
    }
    public function _exclude_from_update($event_id,$attachment_type,$mime_type){

        $result = $this->db->query("
            SELECT attachment_id
            FROM event_file_attachment
            WHERE event_id = ?
            AND attachment_type = ?
            AND INSTR(`mime_type`, ?) > 0
            ORDER BY attachment_id DESC
            LIMIT 1
        ", array($event_id, $attachment_type, $mime_type));

        if ($result->num_rows() > 0) {
             $ret = $result->row();
             return $ret->attachment_id;
        }
    }
    public function update_attachment_status_by_type($event_id){

        //update attachment 1
        if( $this->event_file_attachment_model->get_attachment_status_by_type($event_id, 1,'image') ){
            $this->db->where("attachment_type",1);
            $this->db->where("INSTR(`mime_type`, 'image') > 0");
            $this->db->where("status" , 2);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 1));

            $this->db->where("attachment_id !=",$this->_exclude_from_update($event_id,1,'image'));
            $this->db->where("attachment_type",1);
            $this->db->where("INSTR(`mime_type`, 'image') > 0");
            $this->db->where("status" , 1);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 3));
        }

        //update attachment 2 = image
        if( $this->event_file_attachment_model->get_attachment_status_by_type($event_id, 2,'image') ){
            $this->db->where("attachment_type",2);
            $this->db->where("INSTR(`mime_type`, 'image') > 0");
            $this->db->where("status" , 2);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 1));

            $this->db->where("attachment_id !=",$this->_exclude_from_update($event_id,2,'image'));
            $this->db->where("attachment_type",2);
            $this->db->where("INSTR(`mime_type`, 'image') > 0");
            $this->db->where("status" , 1);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 3));

        }

        //update attachment 2 = audio
        if( $this->event_file_attachment_model->get_attachment_status_by_type($event_id, 2, 'audio')  ){
            $this->db->where("attachment_type",2);
            $this->db->where("INSTR(`mime_type`, 'audio') > 0");
            $this->db->where("status" , 2);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 1));

            $this->db->where("attachment_id !=",$this->_exclude_from_update($event_id,2,'audio'));
            $this->db->where("attachment_type",2);
            $this->db->where("INSTR(`mime_type`, 'audio') > 0");
            $this->db->where("status" , 1);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 3));

        }

         //update attachment 2 = video
        if( $this->event_file_attachment_model->get_attachment_status_by_type($event_id, 2, 'video')  ){
            $this->db->where("attachment_type",2);
            $this->db->where("INSTR(`mime_type`, 'video') > 0");
            $this->db->where("status" , 2);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 1));

            $this->db->where("attachment_id !=",$this->_exclude_from_update($event_id,2,'video'));
            $this->db->where("attachment_type",2);
            $this->db->where("INSTR(`mime_type`, 'video') > 0");
            $this->db->where("status" , 1);
            $this->db->where("event_id", $event_id);
            $this->db->update("event_file_attachment", array("status" => 3));

        }
    }

    public function get_attachment_status_by_type($event_id,$attachment_type,$mime_type){

        $and = "";

        if($mime_type != false) $and ="AND INSTR(`mime_type`, '".$mime_type."') > 0 ";

        $result = $this->db->query("
            SELECT attachment_id,status
            FROM event_file_attachment
            WHERE event_id = ?
            AND status = 1
            AND attachment_type = ?
          $and ", array($event_id, $attachment_type));

        if ($result->num_rows() > 0)  return true;
        else return false;
    }

    public function get_status_type($event_id, $event_file_attachment,$status,$attachment_type,$mime_type){
        $and = "";
        if($mime_type != false) $and ="AND INSTR(`mime_type`, '".$mime_type."') > 0 ";
        $result = $this->db->query("
            SELECT status
            FROM $event_file_attachment
            WHERE event_id = ?
            AND status = ?
            AND attachment_type = ?
            $and ", array($event_id, $status, $attachment_type));

        return ( ($result->num_rows() > 0) ? 2 : 1 );
    }
    private function _get_datatables_query($data_source,$event_id){

        $fields = "attachment_id,
        event_id,
        description,
        display,
        file_name,
        file_size,
        mime_type,
        attachment_type,
        status,
        (CASE
            WHEN added_by IS NULL THEN 'Unknown'
            ELSE (SELECT CONCAT(first_name,' ',last_name) as added_by FROM user WHERE user_id = added_by)
        END) AS added_by,
        DATE_FORMAT(date_added, '%d/%m/%Y %Hh%i') AS date_added";

        $_query = ""; $_search = ""; $_ordey_by = ""; $data = array(); $select = "";

        $_query = "
                SELECT ".$fields."
                FROM event_file_attachment
                WHERE event_id = ".$this->db->escape($event_id)."
                AND attachment_type = 1
                AND status =". $this->db->escape($this->get_status_type($event_id, "event_file_attachment" , 2,1,false))."
            UNION
                SELECT ".$fields."
                FROM event_file_attachment
                WHERE event_id = ".$this->db->escape($event_id)."
                AND attachment_type = 2
                AND INSTR(`mime_type`, 'image') > 0
                AND status =". $this->db->escape($this->get_status_type($event_id, "event_file_attachment" , 2,2,'image'))."
            UNION
                SELECT ".$fields."
                FROM event_file_attachment
                WHERE event_id = ".$this->db->escape($event_id)."
                AND attachment_type = 2
                AND INSTR(`mime_type`, 'audio') > 0
                AND status =". $this->db->escape($this->get_status_type($event_id, "event_file_attachment" , 2,2,'audio'))."
            UNION
                SELECT ".$fields."
                FROM event_file_attachment
                WHERE event_id = ".$this->db->escape($event_id)."
                AND attachment_type = 2
                AND INSTR(`mime_type`, 'video') > 0
                AND status =". $this->db->escape($this->get_status_type($event_id, "event_file_attachment" , 2,2,'video'))."
                ";

        $_ordey_by .= " ORDER BY ".key($this->order)." ".$this->order[key($this->order)];

        return array("query"=>$_query.$_search.$_ordey_by, "data" =>$data);
    }
    public function get_datatables($data_source,$event_id){
        $_query = $this->_get_datatables_query($data_source,$event_id);
        if($data_source['length'] != -1){
            $_query["query"] .= " LIMIT ".$data_source['start'].", ".$data_source['length'];
        }
        return $this->db->query($_query["query"], $_query["data"])->result();
    }
    public function count_filtered($data_source,$event_id){
        $_query = $this->_get_datatables_query($data_source,$event_id);
        return $this->db->query($_query["query"], $_query["data"])->num_rows();
    }

    public function count_all($data_source,$event_id){
        $_query = $this->_get_datatables_query($data_source,$event_id);
        return $this->db->query($_query["query"], $_query["data"])->num_rows();
    }

    public function update_event_attachment_status($field_id,$id,$table,$data,$field_status,$status_where){
        $this->db->where($field_id, $id);
        $this->db->where($field_status, $status_where);
        $this->db->update($table, $data);
        return $this->db->affected_rows();
    }

    public function disable_other_attachments($event_id, $new_file_mime, $attachment_type, $action = 'add'){
        if ($action == 'add') {
            if (preg_match("[audio]", $new_file_mime)) {
                $this->db->not_like('mime_type ', "image");
            } elseif (preg_match("[image]", $new_file_mime)) {
                $this->db->not_like('mime_type ', "audio");
            }
        } else {
            if (preg_match("[audio]", $new_file_mime)) {
                $this->db->not_like('mime_type ', "image");
            } elseif (preg_match("[image]", $new_file_mime)) {
                $this->db->not_like('mime_type ', "audio");
            }
        }
        $this->db->where('event_id', $event_id);
        $this->db->where('attachment_type', $attachment_type);
        $this->db->update(
            'event_file_attachment',
            array(
                'status' => 0
            )
        );
        return $this->db->affected_rows();
    }

    public function get_events_list_export($data_source,$event_id){
        $this->_get_datatables_query($data_source, $event_id);
        $query = $this->db->get();
        $res = $query->result();
        return $res;
    }

    public function add_event_attachment($data, $audio_video=array()){

        $this->db->insert("event_file_attachment", $data);
        $attachment_id = $this->db->insert_id();

        if( $attachment_id ){
            //if there is audio or video setup, add an entry to table: event_file_attachment_setup
            if(sizeof($audio_video) > 0){
                $audio_video["attachment_id"] = $attachment_id;
                $this->db->insert("event_file_attachment_setup", $audio_video);
                return $this->db->insert_id();
            }
            return $attachment_id;
        }
        return false;
    }

    public function update_event_attachment($attachment_id=0, $data=array(), $audio_video=array()){

        if($attachment_id && sizeof($data) > 0){

            $this->db->where("attachment_id", $attachment_id);
            $this->db->update("event_file_attachment", $data);
            $updated = $this->db->affected_rows();

            //we need to update the file attachment setup
            $this->update_file_attachment_setup($attachment_id, $audio_video);

            return $updated;
        } else {
            return false;
        }
    }

    private function update_file_attachment_setup($attachment_id, $audio_video =array()){

        $this->db->select("*");
        $this->db->where("attachment_id", $attachment_id);
        $result = $this->db->get("event_file_attachment_setup");

        if($result->num_rows() > 0) {
            if( sizeof($audio_video) >0 ) {
                $this->db->where("attachment_id", $attachment_id);
                $this->db->update("event_file_attachment_setup", $audio_video);
            } else {
                //delete file attachment setup entry
                $this->db->where("attachment_id", $attachment_id);
                $this->db->delete("event_file_attachment_setup");
            }
        } else if( sizeof($audio_video) > 0 ) {
            $audio_video["attachment_id"] = $attachment_id;
            $this->db->insert("event_file_attachment_setup", $audio_video);
        }
    }
    public function delete_event_attachment($event_id,$attachment_type,$mime_type,$attachment_id){

        if($event_id && $attachment_type && $mime_type){
            $this->db->where("attachment_id", $attachment_id);
            /*$this->db->where("event_id", $event_id);
            $this->db->where("attachment_type", $attachment_type);
            $this->db->where("INSTR(`mime_type`, '".$mime_type."') > 0");*/
            $this->db->update("event_file_attachment", array("status" => 0));
            return $this->db->affected_rows();

        } else {
            return false;
        }
    }

    public function list_event_attachment($event_id=0, $attachment_type){
        if($event_id){
            return ($this->db->query("SELECT
                efa.attachment_id, efa.file_name, efa.mime_type,
                efa.description, efa.attachment_type
            FROM event_file_attachment efa
            -- LEFT JOIN event_file_attachment_setup efas ON efas.attachment_id = efa.attachment_id
            WHERE efa.event_id = ?
            AND efa.attachment_type = ?
            -- AND efa.status NOT IN(0)
            AND efa.status NOT IN(0,2)
            ORDER BY efa.mime_type ASC", array($event_id, $attachment_type)))->result();
        }
        return array();
    }

}