<?php

error_reporting(E_ALL);
ini_set('display_errors', 1);

include("inc/config.php");

if(isset($_POST['add_advertisement'])){
  
    $photo = $_FILES['photo']['name'];

    $photo = mysqli_real_escape_string($conn, $photo);

    // Construct the SQL query with sanitized input data
    $query = "INSERT INTO `advertisements` (`photo`) VALUES ('$photo')";
    $query_run = mysqli_query($conn, $query);

    if($query_run){
        move_uploaded_file($_FILES["photo"]["tmp_name"], "advertisement/".$_FILES["photo"]["name"]);
    
        $_SESSION['status'] = "Data Uploaded Successfully";
        header('Location: view-advertisement.php');
        exit;
    } else {
        $_SESSION['status'] = "Data Not Uploaded Successfully";
        header('Location: advertisements.php');
        exit;
    }
}



// update 
if(isset($_POST['update_advertisement'])){
    $id = $_POST['id'];
  
   
    $old_photo = $_POST['image_old'];

  
    $old_photo = mysqli_real_escape_string($conn, $old_photo);

    $update_photo_filename = $_FILES["photo"]["name"] ? $_FILES["photo"]["name"] : $old_photo;

    $allowed_image_extensions = array('gif','png','jpg','jpeg','webp','WEBP');

    $photo_file_extension = pathinfo($update_photo_filename, PATHINFO_EXTENSION);

    if(!in_array($photo_file_extension, $allowed_image_extensions)){
        $_SESSION['status'] = "The image file is not allowed. Please upload an image.";
        header("Location: edit-advertisement.php?id=$id");
        exit;
    }

    // Update the department information in the database
    $query = "UPDATE advertisements SET  photo='$update_photo_filename' WHERE id ='$id' ";

    $query_run = mysqli_query($conn, $query);

    if($query_run){
       
        if($_FILES["photo"]["name"] !='' && $_FILES["photo"]["name"] != $old_photo){
            move_uploaded_file($_FILES["photo"]["tmp_name"], "advertisement/".$_FILES["photo"]["name"]);
            unlink("advertisement/". $old_photo);    
        }

        $_SESSION['status'] = "Updated Successfully";
        header('Location: view-advertisement.php');
    } else {
        $_SESSION['status'] = "Not Updated Successfully";
        header('Location: view-advertisement.php');
    }
}

// delete

if(isset($_POST['delete_advertisement'])){
    $id = $_POST['delete_id'];
    $photo = $_POST['del_advertisement'];
   

    $query = "DELETE FROM advertisements WHERE id = '$id'";
    $query_run = mysqli_query($conn, $query);

    if($query_run){
        if(unlink("advertisement/".$photo)) {
            $_SESSION['status'] = "Deleted Successfully";
            header('Location: view-advertisement.php');
        } else {
            $_SESSION['status'] = "Error deleting files";
            header('Location: view-advertisement.php');
        }
    } else {
        $_SESSION['status'] = "Not Deleted Successfully";
        header('Location: view-advertisement.php');
    }
}
?>