<?php
include("inc/config.php");

if (isset($_POST['upload'])) {
    $builty_id = $_POST['builty_id'];

    // File Upload
    $target_dir = "buimg/";
    $target_file = $target_dir . basename($_FILES["verify_image"]["name"]);
    $uploadOk = 1;

    // Check if file is an image
    $check = getimagesize($_FILES["verify_image"]["tmp_name"]);
    if ($check === false) {
        echo "<script>
                alert('File is not a valid image.');
                window.location.href='view-assign_builty.php';
              </script>";
        exit();
    }

    // Upload if valid
    if (move_uploaded_file($_FILES["verify_image"]["tmp_name"], $target_file)) {
        // Update `builties` table
        $filename = basename($_FILES["verify_image"]["name"]);
        $query = "UPDATE builties SET verify_image='$filename' WHERE id='$builty_id'";
        if (mysqli_query($conn, $query)) {
            echo "<script>
                    alert('Image uploaded successfully.');
                    window.location.href='view-assign_builty.php';
                  </script>";
        } else {
            echo "<script>
                    alert('Database update failed.');
                    window.location.href='view-assign_builty.php';
                  </script>";
        }
    } else {
        echo "<script>
                alert('Error uploading image.');
                window.location.href='view-assign_builty.php';
              </script>";
    }
}
?>