<?php

  function get_version()
  {
      $version = "v" . file_get_contents(__DIR__ . '/VERSION');
      return $version;
  }

  function get_all_users($db)
  {
      try {
          $stmt = "SELECT * FROM users";
          $sql = $db->prepare($stmt);
          $sql->execute();
          $sql->setFetchMode(PDO::FETCH_ASSOC);
          $result = $sql->fetchAll();
      } catch (PDOException $e) {
          echo("Error: " . $e->getMessage());
      }
      return $result;
  }

  function get_user_name($db, $user_uuid)
  {
      try {
          $stmt = "SELECT given_name, family_name FROM users WHERE uuid=:uuid";
          $sql = $db->prepare($stmt);
          $sql->bindParam(':uuid', $user_uuid);
          $sql->execute();
          $sql->setFetchMode(PDO::FETCH_ASSOC);
          $result = $sql->fetchAll();
          $usr = $result[0]['given_name'] . " " . $result[0]['family_name'];
      } catch (PDOException $e) {
          echo("Error: " . $e->getMessage());
      }
      return $usr;
  }

  function get_my_open_requests($db)
  {
      $ticket_stmt = "SELECT * FROM tickets WHERE created_by=:uuid AND status != 'Closed'";
      $ticket_sql = $db->prepare($ticket_stmt);
      $ticket_sql->bindParam(':uuid', $_SESSION['uuid']);
      $ticket_sql->execute();
      $ticket_sql->setFetchMode(PDO::FETCH_ASSOC);
      $ticket_result = $ticket_sql->fetchAll();
      return $ticket_result;
  }

  function get_my_closed_requests($db)
  {
      $ticket_stmt = "SELECT * FROM tickets WHERE created_by=:uuid AND status = 'Closed'";
      $ticket_sql = $db->prepare($ticket_stmt);
      $ticket_sql->bindParam(':uuid', $_SESSION['uuid']);
      $ticket_sql->execute();
      $ticket_sql->setFetchMode(PDO::FETCH_ASSOC);
      $ticket_result = $ticket_sql->fetchAll();
      return $ticket_result;
  }

  function get_subscribed_requests($db)
  {
      $requests = array();
      $sub_tickets_stmt = "SELECT ticket_uuid FROM ticket_subscribers WHERE user_uuid=:uuid";
      $sub_tickets_sql = $db->prepare($sub_tickets_stmt);
      $sub_tickets_sql->bindParam(':uuid', $_SESSION['uuid']);
      $sub_tickets_sql->execute();
      $sub_tickets_sql->setFetchMode(PDO::FETCH_ASSOC);
      $sub_tickets_result = $sub_tickets_sql->fetchAll();
      foreach ($sub_tickets_result as $tkt) {
          $stmt = "SELECT * FROM tickets WHERE uuid=:uuid";
          $sql = $db->prepare($stmt);
          $sql->bindParam(':uuid', $tkt['ticket_uuid']);
          $sql->execute();
          $sql->setFetchMode(PDO::FETCH_ASSOC);
          $result = $sql->fetchAll();
          array_push($requests, $result[0]);
      }
      return $requests;
  }

  function get_open_subscribed_requests($db)
  {
      $requests = array();
      $all_subs = get_subscribed_requests($db);
      foreach ($all_subs as $sub) {
          if ($sub['status'] != 'Closed') {
              array_push($requests, $sub);
          }
      }
      return $requests;
  }

  function get_closed_subscribed_requests($db)
  {
      $requests = array();
      $all_subs = get_subscribed_requests($db);
      foreach ($all_subs as $sub) {
          if ($sub['status'] == 'Closed') {
              array_push($requests, $sub);
          }
      }
      return $requests;
  }

  function get_request($db, $uuid)
  {
      $ticket_stmt = "SELECT * FROM tickets WHERE uuid=:uuid";
      $ticket_sql = $db->prepare($ticket_stmt);
      $ticket_sql->bindParam(':uuid', $uuid);
      $ticket_sql->execute();
      $ticket_sql->setFetchMode(PDO::FETCH_ASSOC);
      $ticket_result = $ticket_sql->fetchAll();
      $request = $ticket_result[0];
      return $request;
  }


  function get_updates($db, $request)
  {
      $updates_stmt = "SELECT * FROM ticket_updates WHERE ticket=:uuid";
      $updates_sql = $db->prepare($updates_stmt);
      $updates_sql->bindParam(':uuid', $request['uuid']);
      $updates_sql->execute();
      $updates_sql->setFetchMode(PDO::FETCH_ASSOC);
      $updates_result = $updates_sql->fetchAll();
      return $updates_result;
  }

  function get_files($db, $request)
  {
      $stmt = "SELECT * FROM ticket_uploads WHERE ticket=:uuid";
      $sql = $db->prepare($stmt);
      $sql->bindParam(':uuid', $request['uuid']);
      $sql->execute();
      $sql->setFetchMode(PDO::FETCH_ASSOC);
      $result = $sql->fetchAll();
      return $result;
  }

  function get_single_file($db, $fileid)
  {
      $stmt = "SELECT * FROM ticket_uploads WHERE id=:fileid";
      $sql = $db->prepare($stmt);
      $sql->bindParam(':fileid', $fileid);
      $sql->execute();
      $sql->setFetchMode(PDO::FETCH_ASSOC);
      $result = $sql->fetchAll();
      $file = $result[0];
      return $file;
  }

  function get_subscribers($db, $request)
  {
      $subs = array();
      $users_stmt = "SELECT user_uuid FROM ticket_subscribers WHERE ticket_uuid=:uuid";
      $users_sql = $db->prepare($users_stmt);
      $users_sql->bindParam(':uuid', $request['uuid']);
      $users_sql->execute();
      $users_sql->setFetchMode(PDO::FETCH_ASSOC);
      $users_result = $users_sql->fetchAll();
      foreach ($users_result as $u) {
          array_push($subs, $u['user_uuid']);
      }
      return $subs;
  }

  function isAuthorised($user, $authorised_users, $request)
  {
      if (in_array($user, $authorised_users) || $_SESSION['uuid'] == $request['created_by']) {
          return true;
      } else {
          return false;
      }
  }