<?php
/**
 * Gestione Territori
 * Territory Manager
 */

require_once 'config.php';
require_once 'functions.php';
require_once 'db.php';

requireLogin();

$page_title = 'Gestione Territori';
$db = getDB();

$action = $_GET['action'] ?? 'list';
$territory_id = $_GET['id'] ?? null;

// Gestione delle azioni POST
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_POST['action'])) {
        switch ($_POST['action']) {
            case 'add':
                $numero = sanitize($_POST['numero']);
                $zona = sanitize($_POST['zona']);
                $tipologia = sanitize($_POST['tipologia']);
                $note = sanitize($_POST['note'] ?? '');
                
                // Gestione upload immagine
                $image_path = null;
                if (isset($_FILES['image']) && $_FILES['image']['error'] === UPLOAD_ERR_OK) {
                    $file = $_FILES['image'];
                    $ext = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));
                    
                    if (in_array($ext, ALLOWED_EXTENSIONS) && $file['size'] <= MAX_FILE_SIZE) {
                        $filename = 'territory_' . time() . '_' . uniqid() . '.' . $ext;
                        $upload_dir = UPLOAD_PATH;
                        
                        if (!is_dir($upload_dir)) {
                            mkdir($upload_dir, 0755, true);
                        }
                        
                        if (move_uploaded_file($file['tmp_name'], $upload_dir . '/' . $filename)) {
                            $image_path = UPLOAD_URL . '/' . $filename;
                        }
                    }
                }
                
                $result = $db->query(
                    "INSERT INTO territories (numero, zona, tipologia, image_path, note) VALUES (?, ?, ?, ?, ?)",
                    [$numero, $zona, $tipologia, $image_path, $note]
                );
                
                if ($result) {
                    $territory_id = $db->getConnection()->lastInsertId();
                    logActivity('create', "Creato territorio $numero - $zona", 'territory', $territory_id);
                    setFlashMessage('Territorio aggiunto con successo', 'success');
                } else {
                    setFlashMessage('Errore durante l\'aggiunta del territorio', 'error');
                }
                
                header('Location: territories.php');
                exit;
                break;
                
            case 'edit':
                $id = (int)$_POST['id'];
                $numero = sanitize($_POST['numero']);
                $zona = sanitize($_POST['zona']);
                $tipologia = sanitize($_POST['tipologia']);
                $note = sanitize($_POST['note'] ?? '');
                
                // Gestione upload nuova immagine
                $image_path = $_POST['current_image'] ?? null;
                if (isset($_FILES['image']) && $_FILES['image']['error'] === UPLOAD_ERR_OK) {
                    $file = $_FILES['image'];
                    $ext = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));
                    
                    if (in_array($ext, ALLOWED_EXTENSIONS) && $file['size'] <= MAX_FILE_SIZE) {
                        // Elimina vecchia immagine
                        if ($image_path && file_exists(BASE_PATH . $image_path)) {
                            unlink(BASE_PATH . $image_path);
                        }
                        
                        $filename = 'territory_' . time() . '_' . uniqid() . '.' . $ext;
                        $upload_dir = UPLOAD_PATH;
                        
                        if (!is_dir($upload_dir)) {
                            mkdir($upload_dir, 0755, true);
                        }
                        
                        if (move_uploaded_file($file['tmp_name'], $upload_dir . '/' . $filename)) {
                            $image_path = UPLOAD_URL . '/' . $filename;
                        }
                    }
                }
                
                $result = $db->query(
                    "UPDATE territories SET numero = ?, zona = ?, tipologia = ?, image_path = ?, note = ? WHERE id = ?",
                    [$numero, $zona, $tipologia, $image_path, $note, $id]
                );
                
                if ($result) {
                    logActivity('update', "Modificato territorio $numero - $zona", 'territory', $id);
                    setFlashMessage('Territorio modificato con successo', 'success');
                } else {
                    setFlashMessage('Errore durante la modifica del territorio', 'error');
                }
                
                header('Location: territories.php');
                exit;
                break;
                
            case 'delete':
                $id = (int)$_POST['id'];
                
                // Recupera l'immagine per eliminarla
                $territory = $db->fetchOne("SELECT numero, zona, image_path FROM territories WHERE id = ?", [$id]);
                if ($territory && $territory['image_path']) {
                    $file_path = BASE_PATH . $territory['image_path'];
                    if (file_exists($file_path)) {
                        unlink($file_path);
                    }
                }
                
                $result = $db->query("DELETE FROM territories WHERE id = ?", [$id]);
                
                if ($result) {
                    if ($territory) {
                        logActivity('delete', "Eliminato territorio {$territory['numero']} - {$territory['zona']}", 'territory', $id);
                    }
                    setFlashMessage('Territorio eliminato con successo', 'success');
                } else {
                    setFlashMessage('Errore durante l\'eliminazione del territorio', 'error');
                }
                
                header('Location: territories.php');
                exit;
                break;
        }
    }
}

// Recupera dati per modifica
$territory = null;
if ($action === 'edit' && $territory_id) {
    $territory = $db->fetchOne("SELECT * FROM territories WHERE id = ?", [$territory_id]);
    if (!$territory) {
        setFlashMessage('Territorio non trovato', 'error');
        header('Location: territories.php');
        exit;
    }
}

// Lista territori con informazioni sullo stato
if ($action === 'list') {
    $search = $_GET['search'] ?? '';
    $filter_zona = $_GET['zona'] ?? '';
    $filter_tipologia = $_GET['tipologia'] ?? '';
    
    $where = [];
    $params = [];
    
    if ($search) {
        $where[] = "(t.numero LIKE ? OR t.zona LIKE ? OR t.tipologia LIKE ?)";
        $search_term = "%$search%";
        $params[] = $search_term;
        $params[] = $search_term;
        $params[] = $search_term;
    }
    
    if ($filter_zona) {
        $where[] = "t.zona = ?";
        $params[] = $filter_zona;
    }
    
    if ($filter_tipologia) {
        $where[] = "t.tipologia = ?";
        $params[] = $filter_tipologia;
    }
    
    $where_clause = $where ? "WHERE " . implode(" AND ", $where) : "";
    
    $territories = $db->fetchAll("
        SELECT 
            t.*,
            a.id as current_assignment_id,
            a.assigned_to,
            a.assigned_date,
            DATEDIFF(CURDATE(), a.assigned_date) as days_assigned
        FROM territories t
        LEFT JOIN assignments a ON t.id = a.territory_id AND a.returned_date IS NULL
        $where_clause
        ORDER BY t.numero ASC
    ", $params);
    
    // Ottieni liste per filtri
    $zones = $db->fetchAll("SELECT DISTINCT zona FROM territories ORDER BY zona");
    $types = $db->fetchAll("SELECT DISTINCT tipologia FROM territories ORDER BY tipologia");
}

include 'header.php';
?>

<?php if ($action === 'list'): ?>
    <div class="page-header">
        <h1>Gestione Territori</h1>
        <a href="?action=add" class="btn btn-primary">+ Nuovo Territorio</a>
    </div>
    
    <!-- Filtri di ricerca -->
    <div class="card">
        <div class="card-body">
            <form method="GET" action="" class="filter-form">
                <div class="form-row">
                    <div class="form-group">
                        <input type="text" name="search" placeholder="Cerca numero, zona o tipologia..." 
                               value="<?php echo htmlspecialchars($search); ?>" class="form-control">
                    </div>
                    <div class="form-group">
                        <select name="zona" class="form-control">
                            <option value="">Tutte le zone</option>
                            <?php foreach ($zones as $z): ?>
                                <option value="<?php echo htmlspecialchars($z['zona']); ?>" 
                                        <?php echo $filter_zona === $z['zona'] ? 'selected' : ''; ?>>
                                    <?php echo htmlspecialchars($z['zona']); ?>
                                </option>
                            <?php endforeach; ?>
                        </select>
                    </div>
                    <div class="form-group">
                        <select name="tipologia" class="form-control">
                            <option value="">Tutte le tipologie</option>
                            <?php foreach ($types as $t): ?>
                                <option value="<?php echo htmlspecialchars($t['tipologia']); ?>" 
                                        <?php echo $filter_tipologia === $t['tipologia'] ? 'selected' : ''; ?>>
                                    <?php echo htmlspecialchars($t['tipologia']); ?>
                                </option>
                            <?php endforeach; ?>
                        </select>
                    </div>
                    <button type="submit" class="btn btn-primary">Filtra</button>
                    <a href="territories.php" class="btn btn-secondary">Reset</a>
                </div>
            </form>
        </div>
    </div>
    
    <!-- Tabella territori -->
    <div class="card">
        <div class="card-body">
            <?php if (count($territories) > 0): ?>
                <table class="table">
                    <thead>
                        <tr>
                            <th>Numero</th>
                            <th>Zona</th>
                            <th>Tipologia</th>
                            <th>Stato</th>
                            <th>Assegnato a</th>
                            <th>Giorni</th>
                            <th>Azioni</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php foreach ($territories as $t): ?>
                            <tr>
                                <td><strong><?php echo htmlspecialchars($t['numero']); ?></strong></td>
                                <td><?php echo htmlspecialchars($t['zona']); ?></td>
                                <td><?php echo htmlspecialchars($t['tipologia']); ?></td>
                                <td>
                                    <?php if ($t['current_assignment_id']): ?>
                                        <span class="badge badge-info">Assegnato</span>
                                    <?php else: ?>
                                        <span class="badge badge-success">Disponibile</span>
                                    <?php endif; ?>
                                </td>
                                <td><?php echo $t['assigned_to'] ? htmlspecialchars($t['assigned_to']) : '-'; ?></td>
                                <td><?php echo $t['days_assigned'] ?? '-'; ?></td>
                                <td class="actions">
                                    <a href="?action=view&id=<?php echo $t['id']; ?>" class="btn btn-sm btn-secondary">Dettagli</a>
                                    <a href="?action=edit&id=<?php echo $t['id']; ?>" class="btn btn-sm btn-primary">Modifica</a>
                                    <?php if (!$t['current_assignment_id']): ?>
                                        <form method="POST" style="display:inline;" onsubmit="return confirm('Sei sicuro di voler eliminare questo territorio?');">
                                            <input type="hidden" name="action" value="delete">
                                            <input type="hidden" name="id" value="<?php echo $t['id']; ?>">
                                            <button type="submit" class="btn btn-sm btn-danger">Elimina</button>
                                        </form>
                                    <?php endif; ?>
                                </td>
                            </tr>
                        <?php endforeach; ?>
                    </tbody>
                </table>
            <?php else: ?>
                <p class="empty-state">Nessun territorio trovato</p>
            <?php endif; ?>
        </div>
    </div>

<?php elseif ($action === 'add' || $action === 'edit'): ?>
    <div class="page-header">
        <h1><?php echo $action === 'add' ? 'Nuovo Territorio' : 'Modifica Territorio'; ?></h1>
    </div>
    
    <div class="card">
        <div class="card-body">
            <form method="POST" enctype="multipart/form-data">
                <input type="hidden" name="action" value="<?php echo $action; ?>">
                <?php if ($action === 'edit'): ?>
                    <input type="hidden" name="id" value="<?php echo $territory['id']; ?>">
                    <input type="hidden" name="current_image" value="<?php echo htmlspecialchars($territory['image_path'] ?? ''); ?>">
                <?php endif; ?>
                
                <div class="form-group">
                    <label for="numero">Numero Territorio *</label>
                    <input type="text" id="numero" name="numero" required 
                           value="<?php echo $territory ? htmlspecialchars($territory['numero']) : ''; ?>" class="form-control">
                </div>
                
                <div class="form-group">
                    <label for="zona">Zona *</label>
                    <input type="text" id="zona" name="zona" required 
                           value="<?php echo $territory ? htmlspecialchars($territory['zona']) : ''; ?>" class="form-control">
                </div>
                
                <div class="form-group">
                    <label for="tipologia">Tipologia *</label>
                    <input type="text" id="tipologia" name="tipologia" required 
                           value="<?php echo $territory ? htmlspecialchars($territory['tipologia']) : ''; ?>" class="form-control">
                    <small class="form-help">Es: Residenziale, Commerciale, Rurale, ecc.</small>
                </div>
                
                <div class="form-group">
                    <label for="image">Piantina Territorio</label>
                    <?php if ($territory && $territory['image_path']): ?>
                        <div class="current-image">
                            <img src="<?php echo htmlspecialchars($territory['image_path']); ?>" alt="Piantina" style="max-width: 300px; margin-bottom: 10px;">
                        </div>
                    <?php endif; ?>
                    <input type="file" id="image" name="image" accept="image/*,.pdf" class="form-control">
                    <small class="form-help">Formati supportati: JPG, PNG, GIF, PDF. Dimensione massima: 5 MB</small>
                </div>
                
                <div class="form-group">
                    <label for="note">Note</label>
                    <textarea id="note" name="note" rows="4" class="form-control"><?php echo $territory ? htmlspecialchars($territory['note']) : ''; ?></textarea>
                </div>
                
                <div class="form-actions">
                    <button type="submit" class="btn btn-primary">
                        <?php echo $action === 'add' ? 'Aggiungi Territorio' : 'Salva Modifiche'; ?>
                    </button>
                    <a href="territories.php" class="btn btn-secondary">Annulla</a>
                </div>
            </form>
        </div>
    </div>

<?php elseif ($action === 'view' && $territory_id): ?>
    <?php
    $territory = $db->fetchOne("SELECT * FROM territories WHERE id = ?", [$territory_id]);
    if (!$territory) {
        setFlashMessage('Territorio non trovato', 'error');
        header('Location: territories.php');
        exit;
    }
    
    // Storico assegnazioni
    $history = $db->fetchAll("
        SELECT 
            assigned_to,
            assigned_date,
            returned_date,
            DATEDIFF(COALESCE(returned_date, CURDATE()), assigned_date) as days_duration,
            is_priority,
            note
        FROM assignments
        WHERE territory_id = ?
        ORDER BY assigned_date DESC
    ", [$territory_id]);
    ?>
    
    <div class="page-header">
        <h1>Dettagli Territorio: <?php echo htmlspecialchars($territory['numero']); ?></h1>
        <div>
            <a href="?action=edit&id=<?php echo $territory['id']; ?>" class="btn btn-primary">Modifica</a>
            <a href="territories.php" class="btn btn-secondary">Torna alla Lista</a>
        </div>
    </div>
    
    <div class="card">
        <div class="card-body">
            <div class="detail-grid">
                <div class="detail-item">
                    <strong>Numero:</strong> <?php echo htmlspecialchars($territory['numero']); ?>
                </div>
                <div class="detail-item">
                    <strong>Zona:</strong> <?php echo htmlspecialchars($territory['zona']); ?>
                </div>
                <div class="detail-item">
                    <strong>Tipologia:</strong> <?php echo htmlspecialchars($territory['tipologia']); ?>
                </div>
            </div>
            
            <?php if ($territory['note']): ?>
                <div class="detail-item">
                    <strong>Note:</strong>
                    <p><?php echo nl2br(htmlspecialchars($territory['note'])); ?></p>
                </div>
            <?php endif; ?>
            
            <?php if ($territory['image_path']): ?>
                <div class="detail-item">
                    <strong>Piantina:</strong><br>
                    <a href="<?php echo htmlspecialchars($territory['image_path']); ?>" target="_blank">
                        <img src="<?php echo htmlspecialchars($territory['image_path']); ?>" 
                             alt="Piantina" style="max-width: 500px; margin-top: 10px; border: 1px solid #ddd;">
                    </a>
                </div>
            <?php endif; ?>
        </div>
    </div>
    
    <div class="card">
        <div class="card-header">
            <h2>Storico Assegnazioni</h2>
        </div>
        <div class="card-body">
            <?php if (count($history) > 0): ?>
                <table class="table">
                    <thead>
                        <tr>
                            <th>Assegnato a</th>
                            <th>Data Assegnazione</th>
                            <th>Data Restituzione</th>
                            <th>Durata</th>
                            <th>Priorità</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php foreach ($history as $h): ?>
                            <tr>
                                <td><?php echo htmlspecialchars($h['assigned_to']); ?></td>
                                <td><?php echo formatDate($h['assigned_date']); ?></td>
                                <td>
                                    <?php 
                                    if ($h['returned_date']) {
                                        echo formatDate($h['returned_date']);
                                    } else {
                                        echo '<span class="badge badge-info">In corso</span>';
                                    }
                                    ?>
                                </td>
                                <td><?php echo $h['days_duration']; ?> giorni</td>
                                <td>
                                    <?php if ($h['is_priority']): ?>
                                        <span class="badge badge-danger">Priorità</span>
                                    <?php else: ?>
                                        -
                                    <?php endif; ?>
                                </td>
                            </tr>
                        <?php endforeach; ?>
                    </tbody>
                </table>
            <?php else: ?>
                <p class="empty-state">Nessuna assegnazione storica</p>
            <?php endif; ?>
        </div>
    </div>
<?php endif; ?>

<?php include 'footer.php'; ?>