WebProject/EditReversation.php at main · sanaelsayedd/WebProject · GitHub

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<?php
session_start();

// Check if the user is logged in
$is_logged_in = isset($_SESSION['username']);
$userType = $is_logged_in ? $_SESSION['userType'] : null;
$userName = $is_logged_in ? $_SESSION['username'] : null;

if (!$is_logged_in) {
    header("Location: login.php");
    exit();
}

// Handle logout
if (isset($_GET['logout'])) {
    session_unset();
    session_destroy();
    header("Location: index.php");
    exit();
}
$passworddb = "";
$UserID = $BookID = $ReturnDate = ""; // Initialize variables

// Check if `ReversationID` is provided in the URL
if (isset($_GET['ReversationID'])) {
    $ReversationID = $_GET['ReversationID'];

    // Connect to the database
    $connection = mysqli_connect("localhost", "root", $passworddb, "library");

    if (!$connection) {
        die("Connection failed: " . mysqli_connect_error());
    }

    // Retrieve the reversation data
    $query = "SELECT * FROM `reversation` WHERE `ReversationID` = ?";
    $stmt = mysqli_prepare($connection, $query);
    mysqli_stmt_bind_param($stmt, "i", $ReversationID);
    mysqli_stmt_execute($stmt);
    $result = mysqli_stmt_get_result($stmt);

    if ($row = mysqli_fetch_assoc($result)) {
        $UserID = $row['UserID'];
        $BookID = $row['BookID'];
        $ReturnDate = $row['ReturnDate'];
    } else {
        echo "Reversation not found.";
        exit();
    }

    mysqli_stmt_close($stmt);

    // Fetch all users for the UserID dropdown
    $users_query = "SELECT `UserID`, `UserName` FROM `user`";
    $users_result = mysqli_query($connection, $users_query);

    // Fetch all books for the BookID dropdown
    $books_query = "SELECT `BookID`, `Title` FROM `book`";
    $books_result = mysqli_query($connection, $books_query);

    mysqli_close($connection);
} else {
    die("ReversationID is required.");
}

// Handle form submission to update reversation data
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $UserID = $_POST["UserID"];
    $BookID = $_POST["BookID"];
    $ReturnDate = $_POST["ReturnDate"];

    // Connect to the database
    $connection = mysqli_connect("localhost", "root", $passworddb, "library");

    if (!$connection) {
        die("Connection failed: " . mysqli_connect_error());
    }

    // Update reversation data
    $update_query = "UPDATE `reversation` SET `UserID` = ?, `BookID` = ?, `ReturnDate` = ? WHERE `ReversationID` = ?";
    $stmt = mysqli_prepare($connection, $update_query);

    if ($stmt) {
        mysqli_stmt_bind_param($stmt, "sssi", $UserID, $BookID, $ReturnDate, $ReversationID);

        if (mysqli_stmt_execute($stmt)) {
            // Redirect to the reservation page with a success message
            header("Location: reservation.php?status=success");
            exit();
        } else {
            echo "Error updating reversation: " . mysqli_stmt_error($stmt);
        }
        mysqli_stmt_close($stmt);
    } else {
        echo "Error preparing statement: " . mysqli_error($connection);
    }

    mysqli_close($connection);
}
?>


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Edit ReversationID</title>
    <link rel="stylesheet" href="css/editReversationStyle.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.1/css/all.min.css" integrity="sha512-5Hs3dF2AEPkpNAR7UiOHba+lRSJNeM2ECkwxUIxC1Q/FLycGTbNapWXB4tP889k5T5Ju8fs4b1P5z/iB4nMfSQ==" crossorigin="anonymous" referrerpolicy="no-referrer" />
</head>
<body>
<header class="header">
            <div class="logo">
                <a href="index.php"><i class="fa-solid fa-book"></i> Knowledge Nest</a>
            </div>
            <nav class="nav-bar">
                <ul class="nav__links">
                    <li><a href="index.php">Home</a></li>
                    <li><a href="#CSection">Contact</a></li>
                    <li><a href="books.php">Books</a></li>

                    <?php if ($userType === 'admin') { ?>
                        <li><a href="borrowBook.php">Borrow</a></li>
                        <li><a href="reservation.php">Reservation</a></li>
                    <?php } ?>

                    <?php if ($is_logged_in): ?>
                        <?php if ($userType === 'user'): ?>
                            <li><a href="myAccount.php">My Account</a></li>
                        <?php elseif ($userType === 'admin'): ?>
                            <li><a href="dashboard.php">Admin Dashboard</a></li>
                        <?php endif; ?>
                    <?php endif; ?>
                </ul>
            </nav>

            <div class="login">
                <?php if ($is_logged_in): ?>
                    <form method="GET" action="index.php">
                        <button type="submit" name="logout">
                            <i class="fa-solid fa-sign-out-alt"></i><b class="logout-text">Logout</b>
                        </button>
                    </form>
                <?php else: ?>
                    <a href="login.php" class="login-icon">
                        <button><i class="fa-solid fa-user"></i><b class="login-text">Login</b></button>
                    </a>
                <?php endif; ?>
            </div>
        </header>
        <main>
            <div class="dashboard-container">
            <a href="javascript:history.back()" class="back-button" >
                        <i class="fa-solid fa-arrow-left"></i> Back
                    </a>
                <div class="dashboard-content">

                    <h2>Edit Reversation</h2>

                    <form action="EditReversation.php?ReversationID=<?php echo htmlspecialchars($ReversationID); ?>" method="POST">
                <table>
                    <tr>
                        <td>UserID:</td>
                        <td>
                            <select name="UserID" required>
                                <?php
                                if (isset($users_result) && mysqli_num_rows($users_result) > 0) {
                                    while ($user = mysqli_fetch_assoc($users_result)) {
                                        $selected = ($user['UserID'] == $UserID) ? 'selected' : '';
                                        echo "<option value='" . htmlspecialchars($user['UserID']) . "' $selected>" . htmlspecialchars($user['UserName']) . "</option>";
                                    }
                                } else {
                                    echo "<option value=''>No users available</option>";
                                }
                                ?>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <td>BookID:</td>
                        <td>
                            <select name="BookID" required>
                                <?php
                                if (isset($books_result) && mysqli_num_rows($books_result) > 0) {
                                    while ($book = mysqli_fetch_assoc($books_result)) {
                                        $selected = ($book['BookID'] == $BookID) ? 'selected' : '';
                                        echo "<option value='" . htmlspecialchars($book['BookID']) . "' $selected>" . htmlspecialchars($book['Title']) . "</option>";
                                    }
                                } else {
                                    echo "<option value=''>No books available</option>";
                                }
                                ?>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <td>ReturnDate:</td>
                        <td><input type="date" name="ReturnDate" value="<?php echo htmlspecialchars($ReturnDate); ?>" required></td>
                    </tr>
                </table>
                <button type="submit">Update Reversation</button>
            </form>

                </div>
            </div>
</main>

</body>
</html>