<?php
session_start();
include 'includes/database.php';
include 'includes/functions.php';
$conn= new Functions();

if(!empty($_FILES['new_photo']['name'])){
    $photo_name = $_FILES['new_photo']['name'];
    $photo_tmpname = $_FILES['new_photo']['tmp_name'];
    $photo_size = $_FILES['new_photo']['size'];
    $username = $_POST['username'];
  


    $photofilenameAr = explode('.', $photo_name);
    $photo_extension = end($photofilenameAr);
    $photo_ext = strtolower($photo_extension);

    //check if image was selected
    if(!empty($photo_name)) {
        if ($photo_size > 2000000) {
            echo "<p class='alert alert-danger alert-dismissible fade show' role='alert'>
                    <i class='fas fa-ban'></i>  Photo size exceeded. Max size is 2MB.
                  <button type=\"button\" class=\"close\" data-dismiss=\"alert\" aria-label=\"Close\">
                             <span aria-hidden=\"true\">×</span>
                  </button>
           </p>";
        }
        if ($photo_ext == 'png' || $photo_ext == 'jpg' || $photo_ext == 'jpeg' || $photo_ext == 'svg') {
            $new_photo_name = "photo_".time().'.'.$photo_ext;
            $link ="upload/".$new_photo_name;
            $strgPath = $link;
            if (file_exists($strgPath)) {
                echo "<p class='alert alert-danger alert-dismissible fade show' role='alert'>
                    <i class='fas fa-ban'></i>  Photo with the same name already exists.
                  <button type=\"button\" class=\"close\" data-dismiss=\"alert\" aria-label=\"Close\">
                             <span aria-hidden=\"true\">×</span>
                  </button>
           </p>";
            } else {
                $photo_upload = move_uploaded_file($photo_tmpname, $strgPath);
                if($photo_upload){
                    //update photo details in the database
                   $sql = "UPDATE teachers SET photo =:photo WHERE username =:username";
                   $conn->query($sql);
                   $conn->bind(":photo", $new_photo_name);
                    $conn->bind(":username", $username);

                    try{
                      $conn->execute();
                       echo "<p class='alert alert-success alert-dismissible fade show' role='alert'>
                          <i class='fas fa-checked-circle-o'></i> Profile photo updated successfully.
                        <button type=\"button\" class=\"close\" data-dismiss=\"alert\" aria-label=\"Close\">
                                   <span aria-hidden=\"true\">×</span>
                        </button>
                        <meta http-equiv='refresh' content='3; teacher'>
                  </p>";

                    }catch(PDOException $err){
                      echo $err->getMessage();

                    }


                }

            }
        } else {
            echo "<p class='alert alert-danger alert-dismissible fade show' role='alert'>
                    <i class='fas fa-ban'></i> Only png, jpg, jpeg or svg formats are allowed. Photo did not upload.
                  <button type=\"button\" class=\"close\" data-dismiss=\"alert\" aria-label=\"Close\">
                             <span aria-hidden=\"true\">×</span>
                  </button>
           </p>";

        }
    }

 


}else{
    echo "<p class='alert alert-danger alert-dismissible fade show text-center' role='alert'>
              <i class='fas fa-ban'></i>
               Please select a photo to upload.
                  <button type='button' class='close' data-dismiss='alert' aria-label='Close'>
                             <span aria-hidden='true'>×</span>
                  </button>
           </p>";
}



