MAVIARcade

admin/includes/leaderboard_functions.php

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+<?php
+// admin/includes/leaderboard_functions.php
+
+/**
+ * Fetches leaderboard data by joining quiz_attempts and quiz_categories.
+ *
+ * @param int $limit The maximum number of records to return.
+ * @return array An array of associative arrays, each representing a leaderboard entry.
+ */
+function get_leaderboard_data($limit = 100) {
+    $db = db_connect();
+    $sql = "
+        SELECT
+            qa.player_name,
+            qc.name as category_name,
+            qa.score,
+            qa.total_questions,
+            qa.attempt_date
+        FROM
+            quiz_attempts qa
+        JOIN
+            quiz_categories qc ON qa.category_id = qc.id
+        ORDER BY
+            qa.score DESC, qa.attempt_date DESC
+        LIMIT :limit
+    ";
+    $stmt = $db->prepare($sql);
+    $stmt->bindParam(':limit', $limit, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetchAll(PDO::FETCH_ASSOC);
+}
+?>

admin/includes/missions_functions.php

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+<?php
+// admin/includes/missions_functions.php
+
+
+
+function get_all_missions() {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM missions ORDER BY id DESC");
+    $stmt->execute();
+    return $stmt->fetchAll(PDO::FETCH_ASSOC);
+}
+
+function get_mission_by_id($id) {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM missions WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetch(PDO::FETCH_ASSOC);
+}
+
+function add_mission($title, $description) {
+    $db = db_connect();
+    $stmt = $db->prepare("INSERT INTO missions (title, description) VALUES (:title, :description)");
+    $stmt->bindParam(':title', $title, PDO::PARAM_STR);
+    $stmt->bindParam(':description', $description, PDO::PARAM_STR);
+    return $stmt->execute();
+}
+
+function update_mission($id, $title, $description) {
+    $db = db_connect();
+    $stmt = $db->prepare("UPDATE missions SET title = :title, description = :description WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    $stmt->bindParam(':title', $title, PDO::PARAM_STR);
+    $stmt->bindParam(':description', $description, PDO::PARAM_STR);
+    return $stmt->execute();
+}
+
+function delete_mission($id) {
+    $db = db_connect();
+    $stmt = $db->prepare("DELETE FROM missions WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    return $stmt->execute();
+}
+

admin/includes/questions_functions.php

@@ -0,0 +1,151 @@
+<?php
+// admin/includes/questions_functions.php
+
+/**
+ * Fetches a single quiz category by its ID to get its name.
+ *
+ * @param int $id The ID of the category.
+ * @return array|false The category data or false if not found.
+ */
+function get_quiz_category_name($id) {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT name FROM quiz_categories WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetch(PDO::FETCH_ASSOC);
+}
+
+/**
+ * Fetches all questions for a given quiz ID.
+ *
+ * @param int $quiz_id The ID of the quiz category.
+ * @return array An array of questions.
+ */
+function get_questions_by_quiz_id($quiz_id) {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM questions WHERE category_id = :quiz_id ORDER BY id ASC");
+    $stmt->bindParam(':quiz_id', $quiz_id, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetchAll(PDO::FETCH_ASSOC);
+}
+
+/**
+ * Fetches all answers for a given question ID.
+ *
+ * @param int $question_id The ID of the question.
+ * @return array An array of answers.
+ */
+function get_answers_by_question_id($question_id) {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM answers WHERE question_id = :question_id ORDER BY id ASC");
+    $stmt->bindParam(':question_id', $question_id, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetchAll(PDO::FETCH_ASSOC);
+}
+
+/**
+ * Deletes a question and its associated answers.
+ *
+ * @param int $id The ID of the question to delete.
+ * @return bool True on success, false on failure.
+ */
+function delete_question($id) {
+    $db = db_connect();
+    // The database should handle answer deletion via ON DELETE CASCADE foreign key
+    $stmt = $db->prepare("DELETE FROM questions WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    return $stmt->execute();
+}
+
+/**
+ * Adds a new question and its answers to the database.
+ *
+ * @param int $quiz_id The ID of the quiz category.
+ * @param string $question_text The text of the question.
+ * @param array $answers An array of answers, where each answer is an array with 'text' and 'is_correct' keys.
+ * @return bool True on success, false on failure.
+ */
+function add_question($quiz_id, $question_text, $answers) {
+    $db = db_connect();
+    try {
+        $db->beginTransaction();
+
+        // Insert the question
+        $stmt = $db->prepare("INSERT INTO questions (category_id, question_text) VALUES (:quiz_id, :question_text)");
+        $stmt->bindParam(':quiz_id', $quiz_id, PDO::PARAM_INT);
+        $stmt->bindParam(':question_text', $question_text, PDO::PARAM_STR);
+        $stmt->execute();
+        $question_id = $db->lastInsertId();
+
+        // Insert the answers
+        $stmt = $db->prepare("INSERT INTO answers (question_id, answer_text, is_correct) VALUES (:question_id, :answer_text, :is_correct)");
+        foreach ($answers as $answer) {
+            $stmt->bindParam(':question_id', $question_id, PDO::PARAM_INT);
+            $stmt->bindParam(':answer_text', $answer['text'], PDO::PARAM_STR);
+            $stmt->bindParam(':is_correct', $answer['is_correct'], PDO::PARAM_BOOL);
+            $stmt->execute();
+        }
+
+        $db->commit();
+        return true;
+    } catch (Exception $e) {
+        $db->rollBack();
+        return false;
+    }
+}
+
+/**
+ * Fetches a single question by its ID for editing.
+ *
+ * @param int $id The ID of the question.
+ * @return array|false The question data or false if not found.
+ */
+function get_question($id) {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM questions WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetch(PDO::FETCH_ASSOC);
+}
+
+/**
+ * Updates a question and its answers.
+ *
+ * @param int $question_id The ID of the question to update.
+ * @param string $question_text The new text of the question.
+ * @param array $answers An array of answers to update/insert.
+ * @return bool
+ */
+function update_question($question_id, $question_text, $answers) {
+    $db = db_connect();
+    try {
+        $db->beginTransaction();
+
+        // Update question text
+        $stmt = $db->prepare("UPDATE questions SET question_text = :question_text WHERE id = :id");
+        $stmt->bindParam(':question_text', $question_text, PDO::PARAM_STR);
+        $stmt->bindParam(':id', $question_id, PDO::PARAM_INT);
+        $stmt->execute();
+
+        // Delete old answers
+        $stmt = $db->prepare("DELETE FROM answers WHERE question_id = :question_id");
+        $stmt->bindParam(':question_id', $question_id, PDO::PARAM_INT);
+        $stmt->execute();
+
+        // Insert new answers
+        $stmt = $db->prepare("INSERT INTO answers (question_id, answer_text, is_correct) VALUES (:question_id, :answer_text, :is_correct)");
+        foreach ($answers as $answer) {
+            $stmt->bindParam(':question_id', $question_id, PDO::PARAM_INT);
+            $stmt->bindParam(':answer_text', $answer['text'], PDO::PARAM_STR);
+            $stmt->bindParam(':is_correct', $answer['is_correct'], PDO::PARAM_BOOL);
+            $stmt->execute();
+        }
+
+        $db->commit();
+        return true;
+    } catch (Exception $e) {
+        $db->rollBack();
+        return false;
+    }
+}
+?>

admin/includes/quizzes_functions.php

@@ -0,0 +1,75 @@
+<?php
+// admin/includes/quizzes_functions.php
+
+/**
+ * Fetches all quiz categories from the database.
+ *
+ * @return array An array of associative arrays, each representing a category.
+ */
+function get_all_quiz_categories() {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM quiz_categories ORDER BY name ASC");
+    $stmt->execute();
+    return $stmt->fetchAll(PDO::FETCH_ASSOC);
+}
+
+/**
+ * Fetches a single quiz category by its ID.
+ *
+ * @param int $id The ID of the category.
+ * @return array|false The category data or false if not found.
+ */
+function get_quiz_category_by_id($id) {
+    $db = db_connect();
+    $stmt = $db->prepare("SELECT * FROM quiz_categories WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    $stmt->execute();
+    return $stmt->fetch(PDO::FETCH_ASSOC);
+}
+
+/**
+ * Adds a new quiz category to the database.
+ *
+ * @param string $name The name of the category.
+ * @param string $description The description of the category.
+ * @return bool True on success, false on failure.
+ */
+function add_quiz_category($name, $description) {
+    $db = db_connect();
+    $stmt = $db->prepare("INSERT INTO quiz_categories (name, description) VALUES (:name, :description)");
+    $stmt->bindParam(':name', $name, PDO::PARAM_STR);
+    $stmt->bindParam(':description', $description, PDO::PARAM_STR);
+    return $stmt->execute();
+}
+
+/**
+ * Updates an existing quiz category.
+ *
+ * @param int $id The ID of the category to update.
+ * @param string $name The new name.
+ * @param string $description The new description.
+ * @return bool True on success, false on failure.
+ */
+function update_quiz_category($id, $name, $description) {
+    $db = db_connect();
+    $stmt = $db->prepare("UPDATE quiz_categories SET name = :name, description = :description WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    $stmt->bindParam(':name', $name, PDO::PARAM_STR);
+    $stmt->bindParam(':description', $description, PDO::PARAM_STR);
+    return $stmt->execute();
+}
+
+/**
+ * Deletes a quiz category from the database.
+ *
+ * @param int $id The ID of the category to delete.
+ * @return bool True on success, false on failure.
+ */
+function delete_quiz_category($id) {
+    $db = db_connect();
+    $stmt = $db->prepare("DELETE FROM quiz_categories WHERE id = :id");
+    $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+    return $stmt->execute();
+}
+
+?>

admin/index.php

@@ -0,0 +1,49 @@
+<?php
+// admin/index.php
+
+// --- Basic Routing ---
+$page = $_GET['page'] ?? 'missions';
+$allowed_pages = ['missions', 'quizzes', 'leaderboard', 'questions'];
+
+if (!in_array($page, $allowed_pages)) {
+    $page = 'missions'; // Default to missions if page is not allowed
+}
+
+// --- Include necessary files ---
+// General functions that are always needed
+require_once __DIR__ . '/../db/config.php'; 
+
+// Page-specific functions
+if ($page === 'missions') {
+    require_once __DIR__ . '/includes/missions_functions.php';
+} elseif ($page === 'quizzes') {
+    require_once __DIR__ . '/includes/quizzes_functions.php';
+} elseif ($page === 'leaderboard') {
+    require_once __DIR__ . '/includes/leaderboard_functions.php';
+} elseif ($page === 'questions') {
+    require_once __DIR__ . '/includes/questions_functions.php';
+}
+
+
+// --- Set Page Title ---
+$page_title = ucfirst($page) . ' Management';
+
+
+// --- Include Header ---
+include __DIR__ . '/partials/header.php';
+
+
+// --- Include Page Content ---
+$page_path = __DIR__ . '/pages/' . $page . '.php';
+if (file_exists($page_path)) {
+    include $page_path;
+} else {
+    // Fallback for missing page files
+    echo "<div class='alert alert-danger'>Content file not found for this page.</div>";
+}
+
+
+// --- Include Footer ---
+include __DIR__ . '/partials/footer.php';
+
+?>

admin/pages/leaderboard.php

@@ -0,0 +1,39 @@
+<?php
+// admin/pages/leaderboard.php
+
+$leaderboard_entries = get_leaderboard_data();
+
+?>
+
+<div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
+    <h1 class="h2">Leaderboard</h1>
+</div>
+
+<div class="table-responsive">
+    <table class="table table-striped table-sm">
+        <thead>
+            <tr>
+                <th>Giocatore</th>
+                <th>Categoria</th>
+                <th>Punteggio</th>
+                <th>Data</th>
+            </tr>
+        </thead>
+        <tbody>
+            <?php if (empty($leaderboard_entries)): ?>
+                <tr>
+                    <td colspan="4">Nessun risultato trovato.</td>
+                </tr>
+            <?php else: ?>
+                <?php foreach ($leaderboard_entries as $entry): ?>
+                    <tr>
+                        <td><?php echo htmlspecialchars($entry['player_name']); ?></td>
+                        <td><?php echo htmlspecialchars($entry['category_name']); ?></td>
+                        <td><?php echo htmlspecialchars($entry['score']); ?> / <?php echo htmlspecialchars($entry['total_questions']); ?></td>
+                        <td><?php echo htmlspecialchars(date('d/m/Y H:i', strtotime($entry['attempt_date']))); ?></td>
+                    </tr>
+                <?php endforeach; ?>
+            <?php endif; ?>
+        </tbody>
+    </table>
+</div>

admin/pages/missions.php

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+<?php
+// admin/pages/missions.php
+
+$action = $_GET['action'] ?? 'list';
+$id = $_GET['id'] ?? null;
+
+// Handle POST requests for add/edit
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $title = $_POST['title'] ?? '';
+    $description = $_POST['description'] ?? '';
+    $id = $_POST['id'] ?? null;
+
+    if ($action === 'add') {
+        add_mission($title, $description);
+    } elseif ($action === 'edit') {
+        update_mission($id, $title, $description);
+    }
+    
+    // Redirect to the list view after submission
+    header('Location: index.php?page=missions');
+    exit;
+}
+
+// Handle delete action
+if ($action === 'delete' && $id) {
+    delete_mission($id);
+    header('Location: index.php?page=missions');
+    exit;
+}
+
+?>
+
+<div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
+    <h1 class="h2"><?php
+        if ($action === 'add') echo 'Aggiungi Nuova Missione';
+        elseif ($action === 'edit') echo 'Modifica Missione';
+        else echo 'Gestione Missioni';
+    ?></h1>
+    <div class="btn-toolbar mb-2 mb-md-0">
+        <a href="index.php?page=missions" class="btn btn-sm btn-outline-secondary">
+            <span data-feather="arrow-left"></span>
+            Torna alla Lista
+        </a>
+    </div>
+</div>
+
+<?php if ($action === 'add' || $action === 'edit'): ?>
+    <?php
+    $mission = null;
+    if ($action === 'edit' && $id) {
+        $mission = get_mission_by_id($id);
+    }
+    ?>
+    <form method="POST" action="index.php?page=missions&action=<?php echo $action; ?>">
+        <?php if ($id): ?>
+            <input type="hidden" name="id" value="<?php echo htmlspecialchars($id); ?>">
+        <?php endif; ?>
+        <div class="mb-3">
+            <label for="title" class="form-label">Titolo Missione</label>
+            <input type="text" class="form-control" id="title" name="title" value="<?php echo htmlspecialchars($mission['title'] ?? ''); ?>" required>
+        </div>
+        <div class="mb-3">
+            <label for="description" class="form-label">Descrizione</label>
+            <textarea class="form-control" id="description" name="description" rows="3"><?php echo htmlspecialchars($mission['description'] ?? ''); ?></textarea>
+        </div>
+        <button type="submit" class="btn btn-primary">
+            <?php echo $action === 'edit' ? 'Salva Modifiche' : 'Aggiungi Missione'; ?>
+        </button>
+    </form>
+
+<?php else: // 'list' action ?>
+    <div class="d-flex justify-content-end mb-3">
+         <a href="index.php?page=missions&action=add" class="btn btn-sm btn-outline-primary">
+            <span data-feather="plus"></span>
+            Aggiungi Missione
+        </a>
+    </div>
+    <div class="table-responsive">
+        <table class="table table-striped table-sm">
+            <thead>
+                <tr>
+                    <th>ID</th>
+                    <th>Titolo</th>
+                    <th>Descrizione</th>
+                    <th>Azioni</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php $missions = get_all_missions(); ?>
+                <?php if (empty($missions)): ?>
+                    <tr>
+                        <td colspan="4">Nessuna missione trovata.</td>
+                    </tr>
+                <?php else: ?>
+                    <?php foreach ($missions as $mission): ?>
+                        <tr>
+                            <td><?php echo htmlspecialchars($mission['id']); ?></td>
+                            <td><?php echo htmlspecialchars($mission['title']); ?></td>
+                            <td><?php echo htmlspecialchars($mission['description']); ?></td>
+                            <td>
+                                <a href="index.php?page=missions&action=edit&id=<?php echo $mission['id']; ?>" class="btn btn-sm btn-outline-secondary">
+                                    <span data-feather="edit-2"></span>
+                                    Modifica
+                                </a>
+                                <a href="index.php?page=missions&action=delete&id=<?php echo $mission['id']; ?>" class="btn btn-sm btn-outline-danger" onclick="return confirm('Sei sicuro di voler eliminare questa missione?');">
+                                    <span data-feather="trash-2"></span>
+                                    Elimina
+                                </a>
+                            </td>
+                        </tr>
+                    <?php endforeach; ?>
+                <?php endif; ?>
+            </tbody>
+        </table>
+    </div>
+<?php endif; ?>

admin/pages/questions.php

@@ -0,0 +1,153 @@
+<?php
+// admin/pages/questions.php
+
+$quiz_id = $_GET['quiz_id'] ?? null;
+$action = $_GET['action'] ?? 'list';
+$id = $_GET['id'] ?? null;
+
+if (!$quiz_id) {
+    echo "<div class='alert alert-danger'>ID Quiz non specificato.</div>";
+    return;
+}
+
+$quiz_category = get_quiz_category_name($quiz_id);
+if (!$quiz_category) {
+    echo "<div class='alert alert-danger'>Categoria Quiz non trovata.</div>";
+    return;
+}
+
+// Handle POST requests for add/edit
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $question_text = $_POST['question_text'] ?? '';
+    $answers_post = $_POST['answers'] ?? [];
+    $correct_answer_index = $_POST['correct_answer'] ?? -1;
+    $id = $_POST['id'] ?? null;
+
+    $answers = [];
+    foreach ($answers_post as $index => $text) {
+        if (!empty($text)) {
+            $answers[] = [
+                'text' => $text,
+                'is_correct' => ($index == $correct_answer_index)
+            ];
+        }
+    }
+
+    if ($action === 'add') {
+        add_question($quiz_id, $question_text, $answers);
+    } elseif ($action === 'edit') {
+        update_question($id, $question_text, $answers);
+    }
+    
+    // Redirect to the list view after submission
+    header('Location: index.php?page=questions&quiz_id=' . $quiz_id);
+    exit;
+}
+
+// Handle delete action
+if ($action === 'delete' && $id) {
+    delete_question($id);
+    header('Location: index.php?page=questions&quiz_id=' . $quiz_id);
+    exit;
+}
+
+?>
+
+<div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
+    <h1 class="h2">Domande per: <?php echo htmlspecialchars($quiz_category['name']); ?></h1>
+    <div class="btn-toolbar mb-2 mb-md-0">
+        <a href="index.php?page=quizzes" class="btn btn-sm btn-outline-secondary">
+            <span data-feather="arrow-left"></span>
+            Torna alle Categorie
+        </a>
+    </div>
+</div>
+
+<?php if ($action === 'add' || $action === 'edit'): ?>
+    <?php
+    $question = null;
+    $answers = [['text'=>'', 'is_correct'=>true], ['text'=>'', 'is_correct'=>false], ['text'=>'', 'is_correct'=>false], ['text'=>'', 'is_correct'=>false]];
+    if ($action === 'edit' && $id) {
+        $question = get_question($id);
+        $db_answers = get_answers_by_question_id($id);
+        $answers = [];
+        foreach($db_answers as $ans) {
+            $answers[] = ['text' => $ans['answer_text'], 'is_correct' => $ans['is_correct']];
+        }
+        // ensure we have 4 answers to show in the form
+        while(count($answers) < 4) {
+            $answers[] = ['text' => '', 'is_correct' => false];
+        }
+    }
+    ?>
+    <form method="POST" action="index.php?page=questions&quiz_id=<?php echo $quiz_id; ?>&action=<?php echo $action; ?>">
+        <?php if ($id): ?>
+            <input type="hidden" name="id" value="<?php echo htmlspecialchars($id); ?>">
+        <?php endif; ?>
+        <div class="mb-3">
+            <label for="question_text" class="form-label">Testo della Domanda</label>
+            <textarea class="form-control" id="question_text" name="question_text" rows="3" required><?php echo htmlspecialchars($question['question_text'] ?? ''); ?></textarea>
+        </div>
+        
+        <div class="mb-3">
+            <label class="form-label">Risposte (la prima selezionata è quella corretta)</label>
+            <?php for ($i = 0; $i < 4; $i++): ?>
+            <div class="input-group mb-2">
+                <div class="input-group-text">
+                    <input class="form-check-input mt-0" type="radio" name="correct_answer" value="<?php echo $i; ?>" <?php if($answers[$i]['is_correct']) echo 'checked'; ?>>
+                </div>
+                <input type="text" class="form-control" name="answers[]" value="<?php echo htmlspecialchars($answers[$i]['text'] ?? ''); ?>" required>
+            </div>
+            <?php endfor; ?>
+        </div>
+
+        <button type="submit" class="btn btn-primary">
+            <?php echo $action === 'edit' ? 'Salva Modifiche' : 'Aggiungi Domanda'; ?>
+        </button>
+    </form>
+
+<?php else: // 'list' action ?>
+    <div class="d-flex justify-content-end mb-3">
+         <a href="index.php?page=questions&quiz_id=<?php echo $quiz_id; ?>&action=add" class="btn btn-sm btn-outline-primary">
+            <span data-feather="plus"></span>
+            Aggiungi Domanda
+        </a>
+    </div>
+    <div class="table-responsive">
+        <table class="table table-striped table-sm">
+            <thead>
+                <tr>
+                    <th>ID</th>
+                    <th>Testo della Domanda</th>
+                    <th>Azioni</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php $questions = get_questions_by_quiz_id($quiz_id); ?>
+                <?php if (empty($questions)):
+                 ?>
+                    <tr>
+                        <td colspan="3">Nessuna domanda trovata per questo quiz.</td>
+                    </tr>
+                <?php else: ?>
+                    <?php foreach ($questions as $question): ?>
+                        <tr>
+                            <td><?php echo htmlspecialchars($question['id']); ?></td>
+                            <td><?php echo htmlspecialchars($question['question_text']); ?></td>
+                            <td>
+                                <a href="index.php?page=questions&quiz_id=<?php echo $quiz_id; ?>&action=edit&id=<?php echo $question['id']; ?>" class="btn btn-sm btn-outline-secondary">
+                                    <span data-feather="edit-2"></span>
+                                    Modifica
+                                </a>
+                                <a href="index.php?page=questions&quiz_id=<?php echo $quiz_id; ?>&action=delete&id=<?php echo $question['id']; ?>" class="btn btn-sm btn-outline-danger" onclick="return confirm('Sei sicuro di voler eliminare questa domanda?');">
+                                    <span data-feather="trash-2"></span>
+                                    Elimina
+                                </a>
+                            </td>
+                        </tr>
+                    <?php endforeach; ?>
+                <?php endif; ?>
+            </tbody>
+        </table>
+    </div>
+<?php endif; ?>

admin/pages/quizzes.php

@@ -0,0 +1,120 @@
+<?php
+// admin/pages/quizzes.php
+
+$action = $_GET['action'] ?? 'list';
+$id = $_GET['id'] ?? null;
+
+// Handle POST requests for add/edit
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $name = $_POST['name'] ?? '';
+    $description = $_POST['description'] ?? '';
+    $id = $_POST['id'] ?? null;
+
+    if ($action === 'add') {
+        add_quiz_category($name, $description);
+    } elseif ($action === 'edit') {
+        update_quiz_category($id, $name, $description);
+    }
+    
+    // Redirect to the list view after submission
+    header('Location: index.php?page=quizzes');
+    exit;
+}
+
+// Handle delete action
+if ($action === 'delete' && $id) {
+    delete_quiz_category($id);
+    header('Location: index.php?page=quizzes');
+    exit;
+}
+
+?>
+
+<div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
+    <h1 class="h2"><?php
+        if ($action === 'add') echo 'Aggiungi Nuova Categoria';
+        elseif ($action === 'edit') echo 'Modifica Categoria';
+        else echo 'Gestione Quiz';
+    ?></h1>
+    <div class="btn-toolbar mb-2 mb-md-0">
+        <a href="index.php?page=quizzes" class="btn btn-sm btn-outline-secondary">
+            <span data-feather="arrow-left"></span>
+            Torna alla Lista
+        </a>
+    </div>
+</div>
+
+<?php if ($action === 'add' || $action === 'edit'): ?>
+    <?php
+    $category = null;
+    if ($action === 'edit' && $id) {
+        $category = get_quiz_category_by_id($id);
+    }
+    ?>
+    <form method="POST" action="index.php?page=quizzes&action=<?php echo $action; ?>">
+        <?php if ($id): ?>
+            <input type="hidden" name="id" value="<?php echo htmlspecialchars($id); ?>">
+        <?php endif; ?>
+        <div class="mb-3">
+            <label for="name" class="form-label">Nome Categoria</label>
+            <input type="text" class="form-control" id="name" name="name" value="<?php echo htmlspecialchars($category['name'] ?? ''); ?>" required>
+        </div>
+        <div class="mb-3">
+            <label for="description" class="form-label">Descrizione</label>
+            <textarea class="form-control" id="description" name="description" rows="3"><?php echo htmlspecialchars($category['description'] ?? ''); ?></textarea>
+        </div>
+        <button type="submit" class="btn btn-primary">
+            <?php echo $action === 'edit' ? 'Salva Modifiche' : 'Aggiungi Categoria'; ?>
+        </button>
+    </form>
+
+<?php else: // 'list' action ?>
+    <div class="d-flex justify-content-end mb-3">
+         <a href="index.php?page=quizzes&action=add" class="btn btn-sm btn-outline-primary">
+            <span data-feather="plus"></span>
+            Aggiungi Categoria
+        </a>
+    </div>
+    <div class="table-responsive">
+        <table class="table table-striped table-sm">
+            <thead>
+                <tr>
+                    <th>ID</th>
+                    <th>Nome</th>
+                    <th>Descrizione</th>
+                    <th>Azioni</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php $categories = get_all_quiz_categories(); ?>
+                <?php if (empty($categories)): ?>
+                    <tr>
+                        <td colspan="4">Nessuna categoria trovata.</td>
+                    </tr>
+                <?php else: ?>
+                    <?php foreach ($categories as $category): ?>
+                        <tr>
+                            <td><?php echo htmlspecialchars($category['id']); ?></td>
+                            <td><?php echo htmlspecialchars($category['name']); ?></td>
+                            <td><?php echo htmlspecialchars($category['description']); ?></td>
+                            <td>
+                                <a href="index.php?page=questions&quiz_id=<?php echo $category['id']; ?>" class="btn btn-sm btn-outline-info">
+                                    <span data-feather="help-circle"></span>
+                                    Domande
+                                </a>
+                                <a href="index.php?page=quizzes&action=edit&id=<?php echo $category['id']; ?>" class="btn btn-sm btn-outline-secondary">
+                                    <span data-feather="edit-2"></span>
+                                    Modifica
+                                </a>
+                                <a href="index.php?page=quizzes&action=delete&id=<?php echo $category['id']; ?>" class="btn btn-sm btn-outline-danger" onclick="return confirm('Sei sicuro di voler eliminare questa categoria?');">
+                                    <span data-feather="trash-2"></span>
+                                    Elimina
+                                </a>
+                            </td>
+                        </tr>
+                    <?php endforeach; ?>
+                <?php endif; ?>
+            </tbody>
+        </table>
+    </div>
+<?php endif; ?>

admin/partials/footer.php

@@ -0,0 +1,10 @@
+<?php
+// admin/partials/footer.php
+?>
+    </div>
+</div>
+
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+
+</body>
+</html>

admin/partials/header.php

@@ -0,0 +1,45 @@
+<?php
+// admin/partials/header.php
+?>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>MAVI Admin</title>
+    <link href="../assets/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="../assets/css/custom.css">
+</head>
+<body>
+
+<div class="admin-wrapper">
+    <!-- Sidebar -->
+    <nav id="sidebar">
+        <div class="sidebar-header">
+            <h3>MAVI Admin</h3>
+        </div>
+
+        <ul class="list-unstyled components">
+            <p>Content Management</p>
+            <li class="<?php echo ($page === 'missions') ? 'active' : ''; ?>">
+                <a href="index.php?page=missions">Missions</a>
+            </li>
+            <li class="<?php echo ($page === 'quizzes') ? 'active' : ''; ?>">
+                <a href="index.php?page=quizzes">Quizzes</a>
+            </li>
+            <li class="<?php echo ($page === 'leaderboard') ? 'active' : ''; ?>">
+                <a href="index.php?page=leaderboard">Leaderboard</a>
+            </li>
+        </ul>
+        <ul class="list-unstyled ct-action">
+             <li><a href="/" class="article">Back to Public Site</a></li>
+        </ul>
+    </nav>
+
+    <!-- Page Content -->
+    <div id="content">
+        <nav class="navbar navbar-expand-lg navbar-light bg-light mb-4">
+            <div class="container-fluid">
+                <h4><?php echo $page_title ?? 'Dashboard'; ?></h4>
+            </div>
+        </nav>

assets/css/custom.css

@@ -0,0 +1,72 @@
+/* assets/css/custom.css */
+@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');
+
+body {
+    font-family: 'Poppins', sans-serif;
+    background-color: #F8F9FA;
+}
+
+.admin-wrapper {
+    display: flex;
+}
+
+#sidebar {
+    min-width: 250px;
+    max-width: 250px;
+    background: #2E7D32;
+    color: #fff;
+    transition: all 0.3s;
+    min-height: 100vh;
+}
+
+#sidebar .sidebar-header {
+    padding: 20px;
+    background: #256828;
+}
+
+#sidebar ul.components {
+    padding: 20px 0;
+}
+
+#sidebar ul p {
+    color: #fff;
+    padding: 10px;
+}
+
+#sidebar ul li a {
+    padding: 10px;
+    font-size: 1.1em;
+    display: block;
+    color: #fff;
+    text-decoration: none;
+}
+
+#sidebar ul li a:hover {
+    background: #256828;
+}
+
+#sidebar ul li.active > a,
+a[aria-expanded="true"] {
+    background: #256828;
+}
+
+#content {
+    width: 100%;
+    padding: 20px;
+}
+
+.card {
+    border-radius: 0.5rem;
+    border: none;
+    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
+}
+
+.btn-primary {
+    background-color: #2E7D32;
+    border-color: #2E7D32;
+}
+
+.btn-primary:hover {
+    background-color: #256828;
+    border-color: #256828;
+}

db/config.php

@@ -1,17 +1,48 @@
 <?php
-// Generated by setup_mariadb_project.sh — edit as needed.
-define('DB_HOST', '127.0.0.1');
-define('DB_NAME', 'app_30903');
-define('DB_USER', 'app_30903');
-define('DB_PASS', '7d2d5a2d-6e5e-4580-a9b7-3f8e7288a494');
+// db/config.php
 
-function db() {
-  static $pdo;
-  if (!$pdo) {
-    $pdo = new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset=utf8mb4', DB_USER, DB_PASS, [
-      PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-      PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-    ]);
-  }
-  return $pdo;
+function db_connect() {
+    static $pdo;
+
+    if ($pdo) {
+        return $pdo;
+    }
+
+    $host = '127.0.0.1';
+    $db   = 'app';
+    $user = 'root';
+    $pass = '';
+    $charset = 'utf8mb4';
+
+    $dsn = "mysql:host=$host;dbname=$db;charset=$charset";
+    $options = [
+        PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
+        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+        PDO::ATTR_EMULATE_PREPARES   => false,
+    ];
+
+    try {
+        $pdo = new PDO($dsn, $user, $pass, $options);
+        return $pdo;
+    } catch (\PDOException $e) {
+        // In a real app, log this error and show a generic message
+        throw new \PDOException($e->getMessage(), (int)$e->getCode());
+    }
+}
+
+function run_migrations() {
+    $pdo = db_connect();
+    $migration_dir = __DIR__ . '/migrations';
+    $files = glob($migration_dir . '/*.sql');
+    sort($files);
+
+    foreach ($files as $file) {
+        try {
+            $sql = file_get_contents($file);
+            $pdo->exec($sql);
+        } catch (\PDOException $e) {
+            // Log error if needed, but continue
+            // This might happen if the table already exists, which is fine for idempotent scripts
+        }
+    }
 }

db/migrations/001_initial_schema.sql

@@ -0,0 +1,12 @@
+CREATE TABLE IF NOT EXISTS `missions` (
+  `id` INT AUTO_INCREMENT PRIMARY KEY,
+  `title` VARCHAR(255) NOT NULL,
+  `description` TEXT,
+  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Insert some dummy data for initial view
+INSERT INTO `missions` (`title`, `description`) VALUES
+('The Faces of Lacedonia', 'Explore the portraits of 1957 and learn the stories of the people.'),
+('A Journey Through Time', 'Compare the Lacedonia of the past with the town of today.'),
+('Artisans and Crafts', 'Discover the traditional crafts and tools used by the people of Irpinia.');

db/migrations/002_create_quiz_tables.sql

@@ -0,0 +1,54 @@
+-- Create categories table
+CREATE TABLE IF NOT EXISTS `categories` (
+  `id` INT AUTO_INCREMENT PRIMARY KEY,
+  `name` VARCHAR(255) NOT NULL UNIQUE
+);
+
+-- Create questions table
+CREATE TABLE IF NOT EXISTS `questions` (
+  `id` INT AUTO_INCREMENT PRIMARY KEY,
+  `category_id` INT NOT NULL,
+  `question_text` TEXT NOT NULL,
+  FOREIGN KEY (`category_id`) REFERENCES `categories`(`id`) ON DELETE CASCADE
+);
+
+-- Create answers table
+CREATE TABLE IF NOT EXISTS `answers` (
+  `id` INT AUTO_INCREMENT PRIMARY KEY,
+  `question_id` INT NOT NULL,
+  `answer_text` VARCHAR(255) NOT NULL,
+  `is_correct` BOOLEAN NOT NULL DEFAULT 0,
+  FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE CASCADE
+);
+
+-- Insert categories
+INSERT INTO `categories` (`name`) VALUES ('Cultura'), ('Tradizione')
+ON DUPLICATE KEY UPDATE `name` = `name`;
+
+-- Insert questions and answers for "Cultura"
+-- Question 1
+INSERT INTO `questions` (`category_id`, `question_text`) SELECT id, 'Quale di questi monumenti si trova a Roma?' FROM `categories` WHERE `name` = 'Cultura';
+SET @last_question_id = LAST_INSERT_ID();
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@last_question_id, 'La Torre di Pisa', 0),
+(@last_question_id, 'Il Colosseo', 1),
+(@last_question_id, 'Il Duomo di Milano', 0),
+(@last_question_id, 'Il Ponte di Rialto', 0);
+
+-- Question 2
+INSERT INTO `questions` (`category_id`, `question_text`) SELECT id, 'Chi ha scritto "La Divina Commedia"?' FROM `categories` WHERE `name` = 'Cultura';
+SET @last_question_id = LAST_INSERT_ID();
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@last_question_id, 'Alessandro Manzoni', 0),
+(@last_question_id, 'Giacomo Leopardi', 0),
+(@last_question_id, 'Dante Alighieri', 1),
+(@last_question_id, 'Giovanni Boccaccio', 0);
+
+-- Question 3
+INSERT INTO `questions` (`category_id`, `question_text`) SELECT id, 'Qual è la capitale della Francia?' FROM `categories` WHERE `name` = 'Cultura';
+SET @last_question_id = LAST_INSERT_ID();
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@last_question_id, 'Berlino', 0),
+(@last_question_id, 'Madrid', 0),
+(@last_question_id, 'Londra', 0),
+(@last_question_id, 'Parigi', 1);

db/migrations/003_update_quiz_content.sql

@@ -0,0 +1,54 @@
+-- Truncate tables to ensure a clean state
+SET FOREIGN_KEY_CHECKS=0;
+TRUNCATE TABLE `answers`;
+TRUNCATE TABLE `questions`;
+TRUNCATE TABLE `categories`;
+SET FOREIGN_KEY_CHECKS=1;
+
+-- Insert the new category
+INSERT INTO `categories` (`id`, `name`, `description`) VALUES
+(1, 'MAVI e Lacedonia', 'Domande sul Museo Antropologico Visivo Irpino e sul comune di Lacedonia');
+
+-- Insert questions for the "MAVI e Lacedonia" category
+INSERT INTO `questions` (`id`, `category_id`, `question_text`) VALUES
+(1, 1, 'Dove si trova il MAVI?'),
+(2, 1, 'Cosa significa l''acronimo MAVI?'),
+(3, 1, 'In che anno è stato inaugurato il MAVI?'),
+(4, 1, 'Quale importante fotografo americano ha documentato la vita di Lacedonia nel 1957?'),
+(5, 1, 'A chi è dedicato il Museo di Lacedonia?');
+
+-- Insert answers for the questions
+-- Answers for question 1
+INSERT INTO `answers` (`id`, `question_id`, `answer_text`, `is_correct`) VALUES
+(1, 1, 'Lacedonia', 1),
+(2, 1, 'Avellino', 0),
+(3, 1, 'Napoli', 0),
+(4, 1, 'Roma', 0);
+
+-- Answers for question 2
+INSERT INTO `answers` (`id`, `question_id`, `answer_text`, `is_correct`) VALUES
+(5, 2, 'Museo Antropologico Visivo Irpino', 1),
+(6, 2, 'Museo Archeologico Virtuale Italiano', 0),
+(7, 2, 'Mostra Artistica Visiva Internazionale', 0),
+(8, 2, 'Museo d''Arte Visiva Irpino', 0);
+
+-- Answers for question 3
+INSERT INTO `answers` (`id`, `question_id`, `answer_text`, `is_correct`) VALUES
+(9, 3, '2008', 1),
+(10, 3, '1998', 0),
+(11, 3, '2018', 0),
+(12, 3, '1980', 0);
+
+-- Answers for question 4
+INSERT INTO `answers` (`id`, `question_id`, `answer_text`, `is_correct`) VALUES
+(13, 4, 'Frank Cancian', 1),
+(14, 4, 'Robert Capa', 0),
+(15, 4, 'Henri Cartier-Bresson', 0),
+(16, 4, 'Ansel Adams', 0);
+
+-- Answers for question 5
+INSERT INTO `answers` (`id`, `question_id`, `answer_text`, `is_correct`) VALUES
+(17, 5, 'A San Gerardo Maiella', 1),
+(18, 5, 'A San Francesco d''Assisi', 0),
+(19, 5, 'A Padre Pio', 0),
+(20, 5, 'A San Gennaro', 0);

db/migrations/004_add_tradizioni_questions.sql

@@ -0,0 +1,65 @@
+-- Inserimento della nuova categoria 'Tradizioni'
+INSERT INTO `categories` (`name`) VALUES ('Tradizioni');
+
+-- Inserimento delle domande per la categoria 'Tradizioni'
+SET @category_id = (SELECT `id` FROM `categories` WHERE `name` = 'Tradizioni');
+
+-- Domanda 1
+INSERT INTO `questions` (`category_id`, `question_text`) VALUES
+(@category_id, 'Come si chiamano i dolci tipici di Carnevale a Lacedonia?');
+
+SET @question_id = LAST_INSERT_ID();
+
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@question_id, 'Chiacchiere', 1),
+(@question_id, 'Struffoli', 0),
+(@question_id, 'Cauzuncielli', 0),
+(@question_id, 'Sfogliatelle', 0);
+
+-- Domanda 2
+INSERT INTO `questions` (`category_id`, `question_text`) VALUES
+(@category_id, 'In che mese si svolge la sagra "cingule ricotta e vrasciol"?');
+
+SET @question_id = LAST_INSERT_ID();
+
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@question_id, 'Agosto', 1),
+(@question_id, 'Luglio', 0),
+(@question_id, 'Settembre', 0),
+(@question_id, 'Giugno', 0);
+
+-- Domanda 3
+INSERT INTO `questions` (`category_id`, `question_text`) VALUES
+(@category_id, 'Quale evento storico viene rievocato a Lacedonia con un corteo in abiti d'epoca?');
+
+SET @question_id = LAST_INSERT_ID();
+
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@question_id, 'La Congiura dei Baroni', 1),
+(@question_id, 'La Battaglia di Lacedonia', 0),
+(@question_id, 'L'arrivo di Garibaldi', 0),
+(@question_id, 'La fondazione della città', 0);
+
+-- Domanda 4
+INSERT INTO `questions` (`category_id`, `question_text`) VALUES
+(@category_id, 'Come si chiamano i ravioli dolci farciti con castagne e cioccolata?');
+
+SET @question_id = LAST_INSERT_ID();
+
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@question_id, 'Cauzuncielli', 1),
+(@question_id, 'Sfogliatelle', 0),
+(@question_id, 'Chiacchiere', 0),
+(@question_id, 'Struffoli', 0);
+
+-- Domanda 5
+INSERT INTO `questions` (`category_id`, `question_text`) VALUES
+(@category_id, 'In onore di quale santo vengono allestiti grandi falò il 18 marzo?');
+
+SET @question_id = LAST_INSERT_ID();
+
+INSERT INTO `answers` (`question_id`, `answer_text`, `is_correct`) VALUES
+(@question_id, 'San Giuseppe', 1),
+(@question_id, 'San Gerardo', 0),
+(@question_id, 'San Nicola', 0),
+(@question_id, 'San Filippo Neri', 0);

db/migrations/005_add_description_to_categories.sql

@@ -0,0 +1,5 @@
+ALTER TABLE `categories` ADD `description` TEXT NULL AFTER `name`;
+
+UPDATE `categories` SET `description` = 'Domande sul Museo Antropologico Visivo Irpino e sul comune di Lacedonia.' WHERE `name` = 'MAVI e Lacedonia';
+UPDATE `categories` SET `description` = 'Mettiti alla prova con domande sugli usi, i costumi e le tradizioni popolari.' WHERE `name` = 'Tradizioni';
+UPDATE `categories` SET `description` = 'Domande sulla storia, l'arte e le curiosità legate al territorio di Lacedonia.' WHERE `name` = 'Cultura';

games.php

@@ -0,0 +1,72 @@
+<?php
+// games.php
+?>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Games - MAVI Project</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="assets/css/custom.css">
+</head>
+<body>
+    <div class="container py-5">
+        <div class="text-center mb-4">
+            <h1 style="font-family: 'Poppins', sans-serif;">Games Hub</h1>
+            <p class="lead">Select a game to play.</p>
+        </div>
+
+        <div class="row gy-4">
+            <!-- Game 1: Cultural Quiz -->
+            <div class="col-lg-3 col-md-6">
+                <div class="card h-100">
+                    <div class="card-body d-flex flex-column text-center">
+                        <h5 class="card-title">Quiz Culturale</h5>
+                        <p class="card-text">Metti alla prova la tua conoscenza con domande sulla storia e la cultura locale.</p>
+                        <a href="quiz.php" class="btn btn-primary mt-auto">Gioca</a>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Game 2: Memory Game -->
+            <div class="col-lg-3 col-md-6">
+                <div class="card h-100">
+                    <div class="card-body d-flex flex-column text-center">
+                        <h5 class="card-title">Memory Game</h5>
+                        <p class="card-text">Allena la tua memoria trovando le coppie di immagini a tema.</p>
+                        <a href="#" class="btn btn-secondary disabled mt-auto">Gioca</a>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Game 3: Interactive Map -->
+            <div class="col-lg-3 col-md-6">
+                <div class="card h-100">
+                    <div class="card-body d-flex flex-column text-center">
+                        <h5 class="card-title">Mappa Interattiva di Lacedonia</h5>
+                        <p class="card-text">Esplora la Lacedonia del 1957 e scopri foto storiche nascoste.</p>
+                        <a href="#" class="btn btn-secondary disabled mt-auto">Gioca</a>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Game 4: To Be Defined -->
+            <div class="col-lg-3 col-md-6">
+                <div class="card h-100">
+                    <div class="card-body d-flex flex-column text-center">
+                        <h5 class="card-title">Gioco 4 (Da definire)</h5>
+                        <p class="card-text">Un nuovo gioco in arrivo. Le idee sono benvenute!</p>
+                        <a href="#" class="btn btn-secondary disabled mt-auto">Gioca</a>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <div class="text-center mt-5">
+            <a href="/" class="btn btn-primary">Back to Home</a>
+        </div>
+    </div>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+</body>
+</html>

index.php

@@ -1,131 +1,24 @@
 <?php
-declare(strict_types=1);
-@ini_set('display_errors', '1');
-@error_reporting(E_ALL);
-@date_default_timezone_set('UTC');
-
-$phpVersion = PHP_VERSION;
-$now = date('Y-m-d H:i:s');
+// index.php
 ?>
-<!doctype html>
+<!DOCTYPE html>
 <html lang="en">
 <head>
-  <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>New Style</title>
-  <link rel="preconnect" href="https://fonts.googleapis.com">
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
-  <style>
-    :root {
-      --bg-color-start: #6a11cb;
-      --bg-color-end: #2575fc;
-      --text-color: #ffffff;
-      --card-bg-color: rgba(255, 255, 255, 0.01);
-      --card-border-color: rgba(255, 255, 255, 0.1);
-    }
-    body {
-      margin: 0;
-      font-family: 'Inter', sans-serif;
-      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
-      color: var(--text-color);
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      min-height: 100vh;
-      text-align: center;
-      overflow: hidden;
-      position: relative;
-    }
-    body::before {
-      content: '';
-      position: absolute;
-      top: 0;
-      left: 0;
-      width: 100%;
-      height: 100%;
-      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
-      animation: bg-pan 20s linear infinite;
-      z-index: -1;
-    }
-    @keyframes bg-pan {
-      0% { background-position: 0% 0%; }
-      100% { background-position: 100% 100%; }
-    }
-    main {
-      padding: 2rem;
-    }
-    .card {
-      background: var(--card-bg-color);
-      border: 1px solid var(--card-border-color);
-      border-radius: 16px;
-      padding: 2rem;
-      backdrop-filter: blur(20px);
-      -webkit-backdrop-filter: blur(20px);
-      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
-    }
-    .loader {
-      margin: 1.25rem auto 1.25rem;
-      width: 48px;
-      height: 48px;
-      border: 3px solid rgba(255, 255, 255, 0.25);
-      border-top-color: #fff;
-      border-radius: 50%;
-      animation: spin 1s linear infinite;
-    }
-    @keyframes spin {
-      from { transform: rotate(0deg); }
-      to   { transform: rotate(360deg); }
-    }
-    .hint {
-      opacity: 0.9;
-    }
-    .sr-only {
-      position: absolute;
-      width: 1px; height: 1px;
-      padding: 0; margin: -1px;
-      overflow: hidden;
-      clip: rect(0, 0, 0, 0);
-      white-space: nowrap; border: 0;
-    }
-    h1 {
-      font-size: 3rem;
-      font-weight: 700;
-      margin: 0 0 1rem;
-      letter-spacing: -1px;
-    }
-    p {
-      margin: 0.5rem 0;
-      font-size: 1.1rem;
-    }
-    code {
-      background: rgba(0,0,0,0.2);
-      padding: 2px 6px;
-      border-radius: 4px;
-      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
-    }
-    footer {
-      position: absolute;
-      bottom: 1rem;
-      font-size: 0.8rem;
-      opacity: 0.7;
-    }
-  </style>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>MAVI Landing Page</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="assets/css/custom.css">
 </head>
 <body>
-  <main>
-    <div class="card">
-      <h1>Analyzing your requirements and generating your website…</h1>
-      <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
-        <span class="sr-only">Loading…</span>
-      </div>
-      <p class="hint"><?= ($_SERVER['HTTP_HOST'] ?? '') === 'appwizzy.com' ? 'AppWiZZy' : 'Flatlogic' ?> AI is collecting your requirements and applying the first changes.</p>
-      <p class="hint">This page will update automatically as the plan is implemented.</p>
-      <p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
+    <div class="container d-flex justify-content-center align-items-center vh-100">
+        <div class="text-center">
+            <h1 style="font-family: 'Poppins', sans-serif;">Welcome to the MAVI Project</h1>
+            <p class="lead">The interactive learning platform for the MAVI museum.</p>
+            <a href="/games.php" class="btn btn-success mt-3">Play Games</a>
+            <a href="/admin/" class="btn btn-primary mt-3">Go to Admin Panel</a>
+        </div>
     </div>
-  </main>
-  <footer>
-    Page updated: <?= htmlspecialchars($now) ?> (UTC)
-  </footer>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
 </body>
 </html>

quiz.php

@@ -0,0 +1,44 @@
+<?php
+require_once 'db/config.php';
+$pdo = db_connect();
+$stmt = $pdo->query("SELECT name, description FROM categories ORDER BY name");
+$categories = $stmt->fetchAll(PDO::FETCH_ASSOC);
+?>
+<!DOCTYPE html>
+<html lang="it">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Quiz MAVI - Scegli una categoria</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="assets/css/custom.css">
+</head>
+<body>
+    <div class="container mt-5">
+    <a href="games.php" class="btn btn-secondary mb-4">Torna a Giochi</a>
+    <h1 class="text-center mb-4">Scegli una categoria</h1>
+
+        <div class="row justify-content-center g-4">
+            <?php foreach ($categories as $category): ?>
+                <div class="col-md-5">
+                    <div class="card h-100 text-center">
+                        <div class="card-body d-flex flex-column">
+                            <h5 class="card-title"><?php echo htmlspecialchars($category['name']); ?></h5>
+                            <p class="card-text"><?php echo htmlspecialchars($category['description'] ?? 'Descrizione non disponibile.'); ?></p>
+                            <div class="mt-auto">
+                                <a href="quiz_play.php?category=<?php echo urlencode($category['name']); ?>&action=start" class="btn btn-primary">Inizia il Quiz</a>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            <?php endforeach; ?>
+        </div>
+
+        <div class="text-center mt-5">
+            <a href="games.php" class="btn btn-secondary">&larr; Torna alla lista dei giochi</a>
+        </div>
+    </div>
+
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+</body>
+</html>

quiz_play.php

@@ -0,0 +1,218 @@
+<?php
+require_once 'db/config.php';
+
+// --- Configuration ---
+$num_questions_per_quiz = 5;
+
+// --- Helper Functions ---
+
+/**
+ * Fetches a single question and its answers from the database.
+ * @param int $question_id
+ * @return array|null
+ */
+function get_question(int $question_id): ?array {
+    try {
+        $stmt = db()->prepare("SELECT id, question_text FROM questions WHERE id = :id");
+        $stmt->execute(['id' => $question_id]);
+        $question = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$question) {
+            return null;
+        }
+
+        $stmt = db()->prepare("SELECT id, answer_text FROM answers WHERE question_id = :id ORDER BY RAND()");
+        $stmt->execute(['id' => $question_id]);
+        $question['answers'] = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+        return $question;
+    } catch (PDOException $e) {
+        error_log("Error in get_question: " . $e->getMessage());
+        return null;
+    }
+}
+
+/**
+ * Fetches a set of random question IDs for a given category.
+ * @param string $category_name
+ * @param int $limit
+ * @return array
+ */
+function get_random_question_ids(string $category_name, int $limit): array {
+    try {
+        // First, get the category ID from the name
+        $cat_stmt = db()->prepare("SELECT id FROM categories WHERE name = :name");
+        $cat_stmt->execute(['name' => $category_name]);
+        $category = $cat_stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$category) {
+            return [];
+        }
+        $category_id = $category['id'];
+
+        // Now, fetch the questions
+        $stmt = db()->prepare("SELECT id FROM questions WHERE category_id = :category_id ORDER BY RAND() LIMIT :limit");
+        $stmt->bindParam('category_id', $category_id, PDO::PARAM_INT);
+        $stmt->bindParam('limit', $limit, PDO::PARAM_INT);
+        $stmt->execute();
+        return $stmt->fetchAll(PDO::FETCH_COLUMN);
+    } catch (PDOException $e) {
+        error_log("Error in get_random_question_ids: " . $e->getMessage());
+        return [];
+    }
+}
+
+
+/**
+ * Checks if the provided answer is correct.
+ * @param int $answer_id
+ * @return bool
+ */
+function is_answer_correct(int $answer_id): bool {
+    try {
+        $stmt = db()->prepare("SELECT is_correct FROM answers WHERE id = :id");
+        $stmt->execute(['id' => $answer_id]);
+        $result = $stmt->fetch(PDO::FETCH_ASSOC);
+        return $result && $result['is_correct'];
+    } catch (PDOException $e) {
+        error_log("Error in is_answer_correct: " . $e->getMessage());
+        return false;
+    }
+}
+
+// --- State Initialization ---
+$question_ids_str = '';
+$current_index = 0;
+$score = 0;
+$category_name = '';
+$is_quiz_finished = false;
+
+// --- Logic ---
+
+// Is this a POST request (user answered a question)?
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    // Retrieve state from the form
+    $question_ids_str = $_POST['question_ids'] ?? '';
+    $current_index = isset($_POST['current_index']) ? (int)$_POST['current_index'] : 0;
+    $score = isset($_POST['score']) ? (int)$_POST['score'] : 0;
+    $submitted_answer_id = isset($_POST['answer_id']) ? (int)$_POST['answer_id'] : 0;
+
+    // Check if the answer was correct
+    if ($submitted_answer_id > 0 && is_answer_correct($submitted_answer_id)) {
+        $score++;
+    }
+
+    // Move to the next question
+    $current_index++;
+
+} 
+// Or is this a GET request (start of the quiz)?
+else if (isset($_GET['action']) && $_GET['action'] === 'start') {
+    $category_name = $_GET['category'] ?? '';
+    
+    if (!empty($category_name)) {
+        $question_ids = get_random_question_ids($category_name, $num_questions_per_quiz);
+        if (count($question_ids) < $num_questions_per_quiz) {
+            $error_message = "Non ci sono abbastanza domande (ne servono {$num_questions_per_quiz}) in questa categoria per iniziare il quiz.";
+            $is_quiz_finished = true; // Stop the quiz
+        } else {
+            $question_ids_str = implode(',', $question_ids);
+        }
+    } else {
+        $error_message = "Nome della categoria non valido.";
+        $is_quiz_finished = true; // Stop the quiz
+    }
+}
+
+$question_ids = !empty($question_ids_str) ? explode(',', $question_ids_str) : [];
+$total_questions = count($question_ids);
+
+// Check if the quiz is over
+if ($current_index >= $total_questions && $total_questions > 0) {
+    $is_quiz_finished = true;
+}
+
+?>
+<!DOCTYPE html>
+<html lang="it">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Quiz in Corso - MAVI</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="assets/css/custom.css">
+</head>
+<body>
+    <div class="container mt-5">
+        <a href="quiz.php" class="btn btn-secondary mb-4">&larr; Torna alle Categorie</a>
+
+        <?php if ($is_quiz_finished): ?>
+            <div class="card text-center">
+                <div class="card-body">
+                    <h1 class="card-title">Quiz Terminato!</h1>
+                    <?php if (isset($error_message)): ?>
+                        <div class="alert alert-warning"><?php echo $error_message; ?></div>
+                    <?php else: ?>
+                        <p class="card-text fs-4">Il tuo punteggio finale è:</p>
+                        <p class="display-3"><strong><?php echo $score; ?> su <?php echo $total_questions; ?></strong></p>
+                    <?php endif; ?>
+                    <a href="quiz.php" class="btn btn-primary mt-3">Gioca Ancora</a>
+                </div>
+            </div>
+
+        <?php elseif (!empty($question_ids)): ?>
+            <?php
+            $question_id = (int)$question_ids[$current_index];
+            $question = get_question($question_id);
+            ?>
+            <?php if ($question): ?>
+                <div class="card">
+                    <div class="card-body">
+                        <h5 class="card-title">Domanda <?php echo ($current_index + 1); ?> di <?php echo $total_questions; ?></h5>
+                        <p class="card-text fs-4"><?php echo htmlspecialchars($question['question_text']); ?></p>
+                        
+                        <form method="POST" action="quiz_play.php">
+                            <?php foreach ($question['answers'] as $answer): ?>
+                                <div class="form-check">
+                                    <input class="form-check-input" type="radio" name="answer_id" value="<?php echo $answer['id']; ?>" id="answer_<?php echo $answer['id']; ?>" required>
+                                    <label class="form-check-label" for="answer_<?php echo $answer['id']; ?>">
+                                        <?php echo htmlspecialchars($answer['answer_text']); ?>
+                                    </label>
+                                </div>
+                            <?php endforeach; ?>
+                            
+                            <input type="hidden" name="question_ids" value="<?php echo htmlspecialchars($question_ids_str); ?>">
+                            <input type="hidden" name="current_index" value="<?php echo $current_index; ?>">
+                            <input type="hidden" name="score" value="<?php echo $score; ?>">
+                            
+                            <button type="submit" class="btn btn-primary mt-4">Rispondi</button>
+                        </form>
+                    </div>
+                </div>
+
+                <!-- VISIBLE DEBUG INFO -->
+                <div class="card bg-light mt-4">
+                    <div class="card-body">
+                        <h6 class="card-title">Informazioni di Debug</h6>
+                        <pre class="small"><?php echo htmlspecialchars(print_r([
+                            'Question IDs' => $question_ids_str,
+                            'Current Index' => $current_index,
+                            'Score' => $score,
+                            'Total Questions' => $total_questions
+                        ], true)); ?></pre>
+                    </div>
+                </div>
+
+            <?php else: ?>
+                <div class="alert alert-danger">Errore: Impossibile caricare la domanda.</div>
+            <?php endif; ?>
+
+        <?php elseif ($_SERVER['REQUEST_METHOD'] !== 'POST'): ?>
+            <div class="alert alert-info">Seleziona una categoria dalla <a href="quiz.php">pagina dei quiz</a> per iniziare.</div>
+        <?php endif; ?>
+
+    </div>
+
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+</body>
+</html>