<?php
class Qsl_model extends CI_Model {
	function getQsoWithQslList() {
		$this->load->model('logbooks_model');
		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

		$this->db->select('*');
		$this->db->from($this->config->item('table_name'));
		$this->db->join('qsl_images', 'qsl_images.qsoid = ' . $this->config->item('table_name') . '.col_primary_key');
		$this->db->where_in('station_id', $logbooks_locations_array);
		$this->db->order_by("id", "desc");

		return $this->db->get();
	}

	function getQslForQsoId($id) {
		// Clean ID
		$clean_id = $this->security->xss_clean($id);

		// be sure that QSO belongs to user
		$this->load->model('logbook_model');
		if (!$this->logbook_model->check_qso_is_accessible($clean_id)) {
			return;
		}

		$this->db->select('*');
		$this->db->from('qsl_images');
		$this->db->where('qsoid', $clean_id);

		return $this->db->get()->result();
	}

	function saveQsl($qsoid, $filename) {
		// Clean ID
		$clean_id = $this->security->xss_clean($qsoid);

		// be sure that QSO belongs to user
		$this->load->model('logbook_model');
		if (!$this->logbook_model->check_qso_is_accessible($clean_id)) {
			return;
		}

		$data = array(
			'qsoid' => $clean_id,
			'filename' => $filename
		);

		$this->db->insert('qsl_images', $data);

		return $this->db->insert_id();
	}

	function del_image_for_qso($qso_id, $user_id = null) {
		// QSO belongs to station_profile. But since we have folders for Users (and therefore an extra indirect relation) we need to lookup user for station first...
		$qsl_img=$this->db->query('SELECT e.filename, e.id, qso.station_id, s.user_id FROM qsl_images e INNER JOIN '.$this->config->item('table_name').' qso ON (e.qsoid = qso.COL_PRIMARY_KEY) inner join station_profile s on (s.station_id=qso.station_id) where qso.COL_PRIMARY_KEY=?',$qso_id);
		foreach ($qsl_img->result() as $row) {
			if (($user_id ?? '') == '') {					// Calling as User? Check if User-id matches User-id from QSO
				$user_id = $this->session->userdata('user_id');
				if ($row->user_id != $user_id) {
					return "No Image";				// Image doesn't belong to user, so return
				}
			}
			$image=$this->get_imagePath('p',$row->user_id).'/'.$row->filename;
			unlink($image);
			$this->db->delete('qsl_images', array('id' => $row->id));
		}
	}

	function deleteQsl($id) {
		// Clean ID
		$clean_id = $this->security->xss_clean($id);

		// be sure that QSO belongs to user
		$this->load->model('logbook_model');
		$this->db->select('qsoid');
		$this->db->from('qsl_images');
		$this->db->where('id', $clean_id);
		$qsoid = $this->db->get()->row()->qsoid;
		if (!$this->logbook_model->check_qso_is_accessible($qsoid)) {
			return;
		}
		// We cannot call del_image_for_qso here, since this one only deletes ONE QSL-Card (Multiple QSL-Cards can belong to one QSO)
		$path = $this->get_imagePath('p');
		$file = $this->getFilename($clean_id)->row();
		$filename = $file->filename;
		unlink($path.'/'.$filename);
		// Delete Mode
		$this->db->delete('qsl_images', array('id' => $clean_id));
	}

	function getFilename($id) {
		// Clean ID
		$clean_id = $this->security->xss_clean($id);

		// be sure that QSO belongs to user
		$this->load->model('logbook_model');
		$this->db->select('qsoid');
		$this->db->from('qsl_images');
		$this->db->where('id', $clean_id);
		$qsoid = $this->db->get()->row()->qsoid;
		if (!$this->logbook_model->check_qso_is_accessible($qsoid)) {
			return;
		}

		$this->db->select('filename');
		$this->db->from('qsl_images');
		$this->db->where('id', $clean_id);

		return $this->db->get();
	}

	function searchQsos($callsign) {
		$this->load->model('logbooks_model');
		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

		$this->db->select('*');
		$this->db->from($this->config->item('table_name'));
		$this->db->where_in('station_id', $logbooks_locations_array);
		$this->db->where('col_call', $callsign);

		return $this->db->get();
	}

	function addQsotoQsl($qsoid, $filename) {
		$clean_qsoid = $this->security->xss_clean($qsoid);
		$clean_filename = $this->security->xss_clean($filename);

		// be sure that QSO belongs to user
		$this->load->model('logbook_model');
		if (!$this->logbook_model->check_qso_is_accessible($clean_qsoid)) {
			return;
		}

		$data = array(
			'qsoid' => $clean_qsoid,
			'filename' => $clean_filename
		);

		$this->db->insert('qsl_images', $data);

		return $this->db->insert_id();
	}

	// return path of qsl file : u=url / p=real path 
	function get_imagePath($pathorurl='u', $user_id=null) {

		// test if new folder directory option is enabled
		$userdata_dir = $this->config->item('userdata');

		if (isset($userdata_dir)) {

			$qsl_dir = "qsl_card"; // make sure this is the same as in Debug_model.php function migrate_userdata()

			if (($user_id ?? '') == '') {
				$user_id = $this->session->userdata('user_id');
			}

			// check if there is a user_id in the session data and it's not empty
			if ($user_id != '') {

				// create the folder
				if (!file_exists(realpath(APPPATH.'../').'/'.$userdata_dir.'/'.$user_id.'/'.$qsl_dir)) {
					mkdir(realpath(APPPATH.'../').'/'.$userdata_dir.'/'.$user_id.'/'.$qsl_dir, 0755, true);
				}

				// and return it
				if ($pathorurl=='u') {
					return $userdata_dir.'/'.$user_id.'/'.$qsl_dir;
				} else {
					return realpath(APPPATH.'../').'/'.$userdata_dir.'/'.$user_id.'/'.$qsl_dir;
				}
			} else {
				log_message('info', 'Can not get qsl card image path because no user_id in session data');
			}
		} else {

			// if the config option is not set we just return the old path
			return 'assets/qslcard';
		}
	}
}