<?php
// api/maps.php
require_once dirname(__DIR__) . '/config/config.php';
require_once dirname(__DIR__) . '/models/HospitalMap.php';

header('Content-Type: application/json');

if (!isset($_SESSION['user_id'])) {
    echo json_encode(['status' => 'error', 'message' => 'Unauthorized']);
    exit;
}

$action = $_REQUEST['action'] ?? '';
$mapModel = new HospitalMap();

if ($action === 'list') {
    $status = $_GET['status'] ?? null;
    $maps = $mapModel->getAll($status);
    echo json_encode(['status' => 'success', 'data' => $maps]);
    
} elseif ($action === 'upload') {
    if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
        echo json_encode(['status' => 'error', 'message' => 'Invalid method']);
        exit;
    }

    $name = $_POST['name'] ?? '';
    $building = $_POST['building'] ?? '';
    $floor = $_POST['floor'] ?? '';
    $location = $_POST['transport_center_location'] ?? '';
    $status = $_POST['status'] ?? 'active';

    if (empty($name) || empty($building) || empty($floor)) {
        echo json_encode(['status' => 'error', 'message' => 'กรุณากรอกข้อมูลให้ครบถ้วน']);
        exit;
    }

    if (!isset($_FILES['map_image']) || $_FILES['map_image']['error'] !== UPLOAD_ERR_OK) {
        echo json_encode(['status' => 'error', 'message' => 'กรุณาอัปโหลดไฟล์รูปภาพแผนผัง']);
        exit;
    }

    // Process file upload
    $file = $_FILES['map_image'];
    $allowed_types = ['image/jpeg', 'image/png', 'image/webp'];
    
    if (!in_array($file['type'], $allowed_types)) {
        echo json_encode(['status' => 'error', 'message' => 'รองรับเฉพาะไฟล์รูปภาพ (JPG, PNG, WEBP) เท่านั้น']);
        exit;
    }

    $upload_dir = dirname(__DIR__) . '/public/assets/img/maps/';
    if (!is_dir($upload_dir)) {
        mkdir($upload_dir, 0755, true);
    }

    $ext = pathinfo($file['name'], PATHINFO_EXTENSION);
    $filename = 'map_' . time() . '_' . rand(1000, 9999) . '.' . $ext;
    $target_path = $upload_dir . $filename;
    
    if (move_uploaded_file($file['tmp_name'], $target_path)) {
        $db_path = 'public/assets/img/maps/' . $filename;
        
        $data = [
            'name' => $name,
            'building' => $building,
            'floor' => $floor,
            'image_path' => $db_path,
            'transport_center_location' => $location,
            'status' => $status
        ];
        
        if ($mapModel->create($data)) {
            echo json_encode(['status' => 'success', 'message' => 'อัปโหลดแผนผังเรียบร้อยแล้ว']);
        } else {
            // Delete file if DB insert fails
            unlink($target_path);
            echo json_encode(['status' => 'error', 'message' => 'เกิดข้อผิดพลาดในการบันทึกข้อมูล']);
        }
    } else {
        echo json_encode(['status' => 'error', 'message' => 'ไม่สามารถอัปโหลดไฟล์ได้']);
    }

} elseif ($action === 'delete') {
    if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
        echo json_encode(['status' => 'error', 'message' => 'Invalid method']);
        exit;
    }

    $id = $_POST['id'] ?? '';
    if (empty($id)) {
        echo json_encode(['status' => 'error', 'message' => 'ID is required']);
        exit;
    }

    if ($mapModel->delete($id)) {
        echo json_encode(['status' => 'success', 'message' => 'ลบแผนผังเรียบร้อยแล้ว']);
    } else {
        echo json_encode(['status' => 'error', 'message' => 'ไม่สามารถลบแผนผังได้']);
    }

} else {
    echo json_encode(['status' => 'error', 'message' => 'Invalid action']);
}