Code_Progress_Hub/dashboard.php at main · harshitahegde/Code_Progress_Hub · GitHub

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<?php
session_start();
include 'db_connect.php';

if (!isset($_SESSION['username'])) {
    header("Location: login.php");
    exit();
}

$username = $_SESSION['username'];

$sql_user = "SELECT user_id FROM users WHERE username = ?";
$stmt_user = $conn->prepare($sql_user);
$stmt_user->bind_param("s", $username);
$stmt_user->execute();
$result_user = $stmt_user->get_result();

if ($result_user->num_rows === 0) {
    echo "User not found.";
    exit();
}

$user = $result_user->fetch_assoc();
$user_id = $user['user_id'];

$sql1 = "SELECT COUNT(*) as total_submissions FROM submissions WHERE user_id = ?";
$stmt1 = $conn->prepare($sql1);
$stmt1->bind_param("i", $user_id);
$stmt1->execute();
$result1 = $stmt1->get_result()->fetch_assoc();
$total_submissions = $result1['total_submissions'];

$sql2 = "SELECT COUNT(*) as total_solved FROM submissions WHERE user_id = ? AND status = 'solved'";
$stmt2 = $conn->prepare($sql2);
$stmt2->bind_param("i", $user_id);
$stmt2->execute();
$result2 = $stmt2->get_result()->fetch_assoc();
$total_solved = $result2['total_solved'];

$sql3 = "SELECT s.*, p.title FROM submissions s
         JOIN problems p ON s.problem_id = p.problem_id
         WHERE s.user_id = ? ORDER BY s.date_solved DESC LIMIT 5";
$stmt3 = $conn->prepare($sql3);
$stmt3->bind_param("i", $user_id);
$stmt3->execute();
$recent = $stmt3->get_result();
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>DSA Tracker - Dashboard</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css">
    <style>
        body {
            background: linear-gradient(135deg, #e0c3fc, #8ec5fc);
            font-family: 'Segoe UI', sans-serif;
        }

        .header {
            background-color: rgba(21, 101, 192, 0.9);
            color: white;
            padding: 15px;
            text-align: center;
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 1px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .dashboard {
            margin-top: 40px;
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }

        .btn-custom {
            min-width: 160px;
        }
    </style>
</head>
<body>

<div class="header">Welcome, <?php echo htmlspecialchars($username); ?>!</div>

<div class="container dashboard mt-4">
    <div class="d-flex justify-content-center gap-3 flex-wrap mb-4">
        <a href="problems.php" class="btn btn-outline-primary btn-custom">📘 All Problems</a>
        <a href="add_problems.php" class="btn btn-outline-success btn-custom">➕ Add Problem</a>
        <a href="my_submissions.php" class="btn btn-outline-secondary btn-custom">📄 My Submissions</a>
    </div>

    <div class="row mb-4">
        <div class="col-md-6">
            <div class="card text-white bg-success">
                <div class="card-body">
                    <h5 class="card-title">Total Problems Solved</h5>
                    <p class="card-text fs-4"><?php echo $total_solved; ?></p>
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card text-white bg-primary">
                <div class="card-body">
                    <h5 class="card-title">Total Submissions</h5>
                    <p class="card-text fs-4"><?php echo $total_submissions; ?></p>
                </div>
            </div>
        </div>
    </div>

    <div class="d-flex justify-content-between align-items-center">
        <h4>Recent Activity</h4>
        <a href="analytics.php" class="btn btn-outline-info">📊 View Analytics</a>
    </div>

    <table class="table table-striped mt-2">
        <thead>
            <tr>
                <th>Problem</th>
                <th>Status</th>
                <th>Time Taken</th>
                <th>Date Solved</th>
            </tr>
        </thead>
        <tbody>
            <?php while ($row = $recent->fetch_assoc()): ?>
                <tr>
                    <td><?php echo htmlspecialchars($row['title']); ?></td>
                    <td><?php echo ucfirst($row['status']); ?></td>
                    <td><?php echo htmlspecialchars($row['time_taken']); ?> mins</td>
                    <td><?php echo htmlspecialchars($row['date_solved']); ?></td>
                </tr>
            <?php endwhile; ?>
        </tbody>
    </table>

    <div class="text-center">
        <a href="logout.php" class="btn btn-danger mt-3">🚪 Logout</a>
    </div>
</div>

</body>
</html>