<?php
header('Content-Type: application/json');
require_once __DIR__ . '/../db/config.php';

try {
    $pdo = db();

    $outlet_id = isset($_GET['outlet_id']) ? intval($_GET['outlet_id']) : 1;

    // Fetch all tables with their area names, filtered by outlet_id
    $sql = "
        SELECT t.id, t.name, t.capacity, a.name AS area_name
        FROM tables t
        LEFT JOIN areas a ON t.area_id = a.id
        WHERE a.outlet_id = :outlet_id
        ORDER BY a.name ASC, t.name ASC
    ";
    $stmt = $pdo->prepare($sql);
    $stmt->execute(['outlet_id' => $outlet_id]);
    $tables = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // Fetch currently occupied table IDs
    // Orders that are NOT completed and NOT cancelled are considered active
    $occupiedSql = "
        SELECT DISTINCT table_id 
        FROM orders 
        WHERE status NOT IN ('completed', 'cancelled') 
        AND table_id IS NOT NULL
        AND outlet_id = :outlet_id
    ";
    $occupiedStmt = $pdo->prepare($occupiedSql);
    $occupiedStmt->execute(['outlet_id' => $outlet_id]);
    $occupiedTableIds = $occupiedStmt->fetchAll(PDO::FETCH_COLUMN);

    // Mark tables as occupied
    foreach ($tables as &$table) {
        $table['is_occupied'] = in_array($table['id'], $occupiedTableIds);
    }

    echo json_encode(['success' => true, 'tables' => $tables]);

} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['success' => false, 'error' => $e->getMessage()]);
}