// --- INISIALISASI PETA (Koordinat Pontianak) ---
const map = L.map('map').setView([-0.055348, 109.349512], 13);
L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', { maxZoom: 19, attribution: '© OpenStreetMap' }).addTo(map);

const popup = L.popup();
const daftarMarker = {}, daftarPolyline = {}, daftarPolygon = {};

// 1. BUAT KERTAS TRANSPARAN (LAYER GROUPS)
const layerSPBU24 = L.layerGroup().addTo(map);     // SPBU 24 Jam
const layerSPBUNon24 = L.layerGroup().addTo(map);  // SPBU Tidak 24 Jam
const layerJalan = L.layerGroup().addTo(map);      // Jaringan Jalan
const layerKavling = L.layerGroup().addTo(map);    // Area Kavling Tanah

// 2. DAFTARKAN LAYER-LAYER TERSEBUT KE DALAM CONTROL PANEL
const overlays = {
    "<i class='fa-solid fa-gas-pump' style='color:green'></i> SPBU (Buka 24 Jam)": layerSPBU24,
    "<i class='fa-solid fa-gas-pump' style='color:red'></i> SPBU (Tidak 24 Jam)": layerSPBUNon24,
    "<i class='fa-solid fa-road' style='color:blue'></i> Jaringan Jalan": layerJalan,
    "<i class='fa-solid fa-draw-polygon' style='color:darkgreen'></i> Kavling Tanah": layerKavling
};

// 3. MUNCULKAN KONTROL DI POJOK KANAN ATAS PETA
L.control.layers(null, overlays, { collapsed: false }).addTo(map);

let currentMode = 'point';
let tempLatLngs = [], tempPolyline = null;
let tempPolygonLatLngs = [], tempPolygon = null;
let targetEditJalanId = null;   // Menyimpan ID jalan yang sedang diedit
let targetEditKavlingId = null; // Menyimpan ID kavling yang sedang diedit

// Konfigurasi SweetAlert2 (Toast Pojok Kanan Atas)
const Toast = Swal.mixin({
    toast: true, position: 'top-end', showConfirmButton: false, timer: 3000, timerProgressBar: true
});

// Definisi Ikon Kustom
const ikonHijau = new L.Icon({ iconUrl: 'https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-2x-green.png', shadowUrl: 'https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.7/images/marker-shadow.png', iconSize: [25, 41], iconAnchor: [12, 41], popupAnchor: [1, -34], shadowSize: [41, 41] });
const ikonMerah = new L.Icon({ iconUrl: 'https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-2x-red.png', shadowUrl: 'https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.7/images/marker-shadow.png', iconSize: [25, 41], iconAnchor: [12, 41], popupAnchor: [1, -34], shadowSize: [41, 41] });

// --- MANAJEMEN MODE UI ---
function ubahMode(mode) {
    currentMode = mode;
    
    // Matikan mode edit Geoman global jika sedang aktif
    map.pm.disableGlobalEditMode();
    
    // Reset state edit
    if (targetEditJalanId) batalkanEditJalan();
    if (targetEditKavlingId) batalkanEditKavling();

    // Atur tampilan tombol aktif
    document.querySelectorAll('.mode-btn').forEach(btn => btn.classList.remove('active'));
    document.querySelector(`.mode-btn[data-mode="${mode}"]`).classList.add('active');

    // Munculkan menu yang sesuai di sidebar
    document.getElementById('polyline-actions').style.display = (mode === 'polyline') ? 'block' : 'none';
    document.getElementById('polygon-actions').style.display = (mode === 'polygon') ? 'block' : 'none';
    document.getElementById('edit-jalan-actions').style.display = (mode === 'edit_jalan') ? 'block' : 'none';
    document.getElementById('edit-kavling-actions').style.display = (mode === 'edit_kavling') ? 'block' : 'none';
    
    map.closePopup(); 
    if (mode !== 'polyline') batalPolyline();
    if (mode !== 'polygon') batalPolygon();
}

// --- FUNGSI BANTUAN ---
function hitungPanjangJalan(latlngs) { let t=0; for (let i=0; i<latlngs.length-1; i++) t += map.distance(latlngs[i], latlngs[i + 1]); return t; }
function warnaJalan(s) { return (s === 'Nasional') ? 'red' : (s === 'Provinsi') ? 'yellow' : (s === 'Kabupaten') ? 'green' : 'blue'; }
function hitungLuasArea(latlngs) {
    let area = 0, p = Array.isArray(latlngs[0]) ? latlngs[0] : latlngs;
    area = L.GeometryUtil ? L.GeometryUtil.geodesicArea(p) : 0;
    if (area === 0) {
        const R = 6378137, rad = Math.PI / 180;
        for (let i = 0; i < p.length; i++) {
            let p1 = p[i], p2 = p[(i + 1) % p.length];
            area += (p2.lng - p1.lng) * rad * (2 + Math.sin(p1.lat * rad) + Math.sin(p2.lat * rad));
        }
        area = Math.abs(area * R * R / 2);
    } return area;
}
function warnaPolygon(s) { return (s === 'SHM') ? 'red' : (s === 'HGB') ? 'blue' : (s === 'HGU') ? 'green' : (s === 'HP') ? 'yellow' : 'gray'; }

// --- LOAD DATA DARI DATABASE ---
function loadDB() {
    fetch('load_spbu.php').then(res => res.json()).then(data => {
        data.forEach(spbu => {
            let targetLayer = (spbu.buka_24jam == '1') ? layerSPBU24 : layerSPBUNon24;
            let marker = L.marker([spbu.lat, spbu.lng], { icon: (spbu.buka_24jam == '1') ? ikonHijau : ikonMerah, draggable: true }).addTo(targetLayer);
            marker.bindPopup(`<b>${spbu.nama_spbu}</b><br>WA: ${spbu.no_wa}<br>24 Jam: ${spbu.buka_24jam == '1' ? 'Ya' : 'Tidak'}<hr><button onclick="hapusSPBU(${spbu.id})" style="color: red; width: 100%; cursor:pointer;"><i class="fa-solid fa-trash"></i> Hapus</button>`);
            marker.on('dragend', function(e) { updateLokasiSPBU(spbu.id, e.target.getLatLng().lat, e.target.getLatLng().lng); });
            daftarMarker[spbu.id] = marker;
        });
    });

    fetch('load_jalan.php').then(res => res.json()).then(data => {
        data.forEach(jalan => {
            let geojsonGroup = L.geoJSON(jalan.geojson, { style: { color: warnaJalan(jalan.status), weight: 4 } }).addTo(layerJalan);
            let polylineLayer = geojsonGroup.getLayers()[0]; // Ambil layer aslinya
            
            polylineLayer.bindPopup(`<b>Jalan: ${jalan.nama_jalan}</b><br>Status: ${jalan.status}<br>Panjang: ${parseFloat(jalan.panjang_m).toFixed(2)} m<hr><button onclick="hapusPolyline(${jalan.id})" style="color: red; width: 100%; cursor:pointer;"><i class="fa-solid fa-trash"></i> Hapus</button>`);
            
            // Tambahkan event click khusus untuk mode edit
            polylineLayer.on('click', function(e) {
                if (currentMode === 'edit_jalan') {
                    aktifkanEditJalan(jalan.id, jalan.nama_jalan);
                }
            });

            daftarPolyline[jalan.id] = polylineLayer;
        });
    });

    fetch('load_area.php').then(res => res.json()).then(data => {
        data.forEach(area => {
            let geojsonGroup = L.geoJSON(area.geojson, { style: { color: warnaPolygon(area.status_kepemilikan), fillOpacity: 0.4 } }).addTo(layerKavling);
            let polygonLayer = geojsonGroup.getLayers()[0]; // Ambil layer aslinya
            
            polygonLayer.bindPopup(`<b>Kavling: ${area.nama_kavling}</b><br>Status: ${area.status_kepemilikan}<br>Luas: ${parseFloat(area.luas_m2).toFixed(2)} m²<hr><button onclick="hapusPolygon(${area.id})" style="color: red; width: 100%; cursor:pointer;"><i class="fa-solid fa-trash"></i> Hapus</button>`);
            
            // Tambahkan event click khusus untuk mode edit
            polygonLayer.on('click', function(e) {
                if (currentMode === 'edit_kavling') {
                    aktifkanEditKavling(area.id, area.nama_kavling);
                }
            });

            daftarPolygon[area.id] = polygonLayer;
        });
    });
}
loadDB();

// --- FUNGSI UNTUK ME-REFRESH PETA SECARA OTOMATIS (SOFT REFRESH) ---
function refreshPeta() {
    // 1. Bersihkan semua layer dari peta
    layerSPBU24.clearLayers();
    layerSPBUNon24.clearLayers();
    layerJalan.clearLayers();
    layerKavling.clearLayers();

    // 2. Bersihkan memori agar ID tidak menumpuk/ganda
    for (let id in daftarMarker) delete daftarMarker[id];
    for (let id in daftarPolyline) delete daftarPolyline[id];
    for (let id in daftarPolygon) delete daftarPolygon[id];

    // 3. Panggil ulang data terbaru dari database
    loadDB();
}

// --- EVENT KLIK PETA ---
function onMapClick(e) {
    if (currentMode === 'point') {
        let formHtml = `
            <div style="width: 200px;">
                <h4 style="margin-top:0; border-bottom:1px solid #ddd; padding-bottom:5px;"><i class="fa-solid fa-gas-pump"></i> SPBU Baru</h4>
                <form onsubmit="simpanSPBU(event, ${e.latlng.lat}, ${e.latlng.lng})">
                    <input type="text" id="nama_spbu" placeholder="Nama SPBU" required style="width: 100%; margin-bottom: 8px; padding:6px; box-sizing:border-box;">
                    <input type="tel" id="no_wa" placeholder="No WhatsApp" required style="width: 100%; margin-bottom: 8px; padding:6px; box-sizing:border-box;">
                    <label style="font-size:12px; font-weight:bold;">Buka 24 Jam?</label><br>
                    <label><input type="radio" name="buka_24jam" value="1" required> Ya</label> &nbsp;
                    <label><input type="radio" name="buka_24jam" value="0"> Tidak</label><br><br>
                    <button type="submit" style="width: 100%; padding: 8px; background:#2ecc71; color:#fff; border:none; border-radius:4px; font-weight:bold; cursor:pointer;"><i class="fa-solid fa-save"></i> Simpan Data</button>
                </form>
            </div>`;
        popup.setLatLng(e.latlng).setContent(formHtml).openOn(map);
    } else if (currentMode === 'polyline') {
        tempLatLngs.push(e.latlng);
        if (!tempPolyline) tempPolyline = L.polyline(tempLatLngs, {color: '#3498db', weight: 4}).addTo(map);
        else tempPolyline.setLatLngs(tempLatLngs);
    } else if (currentMode === 'polygon') {
        tempPolygonLatLngs.push(e.latlng);
        if (!tempPolygon) tempPolygon = L.polygon(tempPolygonLatLngs, {color: '#2ecc71', fillColor: '#2ecc71', fillOpacity: 0.4}).addTo(map);
        else tempPolygon.setLatLngs(tempPolygonLatLngs);
    }
}
map.on('click', onMapClick);

// --- LOGIKA SPBU ---
function simpanSPBU(event, lat, lng) {
    event.preventDefault();
    let dataKirim = { lat: lat, lng: lng, nama_spbu: document.getElementById('nama_spbu').value, no_wa: document.getElementById('no_wa').value, buka_24jam: document.querySelector('input[name="buka_24jam"]:checked').value };
    
    fetch('simpan_spbu.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(dataKirim) })
    .then(res => res.json()).then(data => {
        if (data.status === 'success') {
            Toast.fire({ icon: 'success', title: 'SPBU Berhasil Disimpan!' });
            map.closePopup(); 
            refreshPeta();
            let targetLayerBaru = (dataKirim.buka_24jam === '1') ? layerSPBU24 : layerSPBUNon24;
            let markerBaru = L.marker([lat, lng], { icon: (dataKirim.buka_24jam === '1') ? ikonHijau : ikonMerah, draggable: true }).addTo(targetLayerBaru);
            markerBaru.bindPopup(`<b>${dataKirim.nama_spbu}</b><br>WA: ${dataKirim.no_wa}<br>24 Jam: ${dataKirim.buka_24jam == '1' ? 'Ya' : 'Tidak'}<hr><button onclick="hapusSPBU(${data.id})" style="color: red; width: 100%; cursor:pointer;"><i class="fa-solid fa-trash"></i> Hapus</button>`);
            markerBaru.on('dragend', function(e) { updateLokasiSPBU(data.id, e.target.getLatLng().lat, e.target.getLatLng().lng); });
            daftarMarker[data.id] = markerBaru;
        } else Toast.fire({ icon: 'error', title: 'Gagal Menyimpan SPBU!' });
    });
}
function updateLokasiSPBU(id, latBaru, lngBaru) {
    fetch('update_spbu.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ id: id, lat: latBaru, lng: lngBaru }) })
    .then(res => res.json()).then(data => { if (data.status === 'success') Toast.fire({ icon: 'info', title: 'Posisi Diperbarui' }); });
}
function hapusSPBU(id) {
    Swal.fire({ title: 'Hapus Titik SPBU?', text: "Data tidak dapat dikembalikan!", icon: 'warning', showCancelButton: true, confirmButtonColor: '#d33', cancelButtonColor: '#3085d6', confirmButtonText: 'Ya, Hapus!', cancelButtonText: 'Batal'
    }).then((result) => {
        if (result.isConfirmed) {
            fetch('hapus_spbu.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ id: id }) })
            .then(res => res.json()).then(data => {
                if (data.status === 'success') { Toast.fire({ icon: 'success', title: 'Titik SPBU Dihapus!' }); if (daftarMarker[id]) { map.removeLayer(daftarMarker[id]); delete daftarMarker[id]; } }
                else Toast.fire({ icon: 'error', title: 'Gagal Menghapus!' });
            });
        }
    });
}

// --- LOGIKA JALAN ---
function batalPolyline() { if (tempPolyline) { map.removeLayer(tempPolyline); tempPolyline = null; } tempLatLngs = []; }
function simpanPolyline() {
    if (tempLatLngs.length < 2) return Toast.fire({ icon: 'warning', title: 'Klik minimal 2 titik di peta!' });
    let nama = document.getElementById('input_nama_jalan').value, status = document.getElementById('input_status_jalan').value;
    if (!nama) return Toast.fire({ icon: 'warning', title: 'Nama Jalan harus diisi!' });

    let panjang = hitungPanjangJalan(tempLatLngs);
    let dataKirim = { nama_jalan: nama, status: status, panjang_m: panjang, geojson: tempPolyline.toGeoJSON() };

    fetch('simpan_jalan.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(dataKirim) })
    .then(res => res.json()).then(data => {
        if (data.status === 'success') {
            Toast.fire({ icon: 'success', title: `Jalan Disimpan (${panjang.toFixed(0)}m)` });
            tempPolyline.setStyle({color: warnaJalan(status)});
            tempPolyline.bindPopup(`<b>Jalan: ${nama}</b><br>Status: ${status}<br>Panjang: ${panjang.toFixed(2)} m<hr><button onclick="hapusPolyline(${data.id})" style="color: red; width: 100%; cursor:pointer;"><i class="fa-solid fa-trash"></i> Hapus</button>`).openPopup();

            layerJalan.addLayer(tempPolyline);
            map.removeLayer(tempPolyline);

            tempPolyline.on('click', function(e) {
                if (currentMode === 'edit_jalan') {
                    aktifkanEditJalan(data.id, nama);
                }
            });
            
            daftarPolyline[data.id] = tempPolyline;
            document.getElementById('input_nama_jalan').value = ''; 
            refreshPeta();
            
            // PERBAIKAN BUG: Hanya kosongkan variabel penampung sementara, jangan removeLayer dari map.
            tempPolyline = null; 
            tempLatLngs = []; 
        } else Toast.fire({ icon: 'error', title: 'Gagal Menyimpan!' });
    });
}
function hapusPolyline(id) {
    Swal.fire({ title: 'Hapus Jalan?', text: "Data permanen dihapus!", icon: 'warning', showCancelButton: true, confirmButtonColor: '#d33', cancelButtonColor: '#3085d6', confirmButtonText: 'Ya, Hapus!'
    }).then((result) => {
        if (result.isConfirmed) {
            fetch('hapus_jalan.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ id: id }) })
            .then(res => res.json()).then(data => {
                if (data.status === 'success') { Toast.fire({ icon: 'success', title: 'Jalan Dihapus!' }); if (daftarPolyline[id]) { map.removeLayer(daftarPolyline[id]); delete daftarPolyline[id]; } }
                else Toast.fire({ icon: 'error', title: 'Gagal Menghapus!' });
            });
        }
    });
}

// --- LOGIKA KAVLING ---
function batalPolygon() { if (tempPolygon) { map.removeLayer(tempPolygon); tempPolygon = null; } tempPolygonLatLngs = []; }
function simpanPolygon() {
    if (tempPolygonLatLngs.length < 3) return Toast.fire({ icon: 'warning', title: 'Minimal 3 titik untuk area!' });
    let nama = document.getElementById('input_nama_kavling').value, status = document.getElementById('input_status_tanah').value;
    if (!nama) return Toast.fire({ icon: 'warning', title: 'Nama kavling harus diisi!' });

    let luas = hitungLuasArea(tempPolygonLatLngs);
    let dataKirim = { nama_kavling: nama, status: status, luas_m2: luas, geojson: tempPolygon.toGeoJSON() };

    fetch('simpan_area.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(dataKirim) })
    .then(res => res.json()).then(data => {
        if (data.status === 'success') {
            Toast.fire({ icon: 'success', title: `Area Disimpan (${luas.toFixed(0)}m²)` });
            tempPolygon.setStyle({color: warnaPolygon(status), fillOpacity: 0.5});
            tempPolygon.bindPopup(`<b>Kavling: ${nama}</b><br>Status: ${status}<br>Luas: ${luas.toFixed(2)} m²<hr><button onclick="hapusPolygon(${data.id})" style="color:red; width: 100%; cursor:pointer;"><i class="fa-solid fa-trash"></i> Hapus</button>`).openPopup();

            layerKavling.addLayer(tempPolygon);
            map.removeLayer(tempPolygon);

            tempPolygon.on('click', function(e) {
                if (currentMode === 'edit_kavling') {
                    aktifkanEditKavling(data.id, nama);
                }
            });
            
            daftarPolygon[data.id] = tempPolygon;
            document.getElementById('input_nama_kavling').value = ''; 
            refreshPeta();
            
            // PERBAIKAN BUG: Sama seperti Polyline
            tempPolygon = null; 
            tempPolygonLatLngs = [];
        } else Toast.fire({ icon: 'error', title: 'Gagal Menyimpan!' });
    });
}
function hapusPolygon(id) {
    Swal.fire({ title: 'Hapus Kavling?', text: "Area ini akan dihapus permanen!", icon: 'warning', showCancelButton: true, confirmButtonColor: '#d33', cancelButtonColor: '#3085d6', confirmButtonText: 'Ya, Hapus!'
    }).then((result) => {
        if (result.isConfirmed) {
            fetch('hapus_area.php', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ id: id }) })
            .then(res => res.json()).then(data => {
                if (data.status === 'success') { Toast.fire({ icon: 'success', title: 'Kavling Dihapus!' }); if (daftarPolygon[id]) { map.removeLayer(daftarPolygon[id]); delete daftarPolygon[id]; } }
                else Toast.fire({ icon: 'error', title: 'Gagal Menghapus!' });
            });
        }
    });
}

// ==========================================
// --- LOGIKA MODE EDIT POLYLINE (JALAN) ---
// ==========================================

function aktifkanEditJalan(id, namaJalan) {
    let layer = daftarPolyline[id];
    if (!layer) return;

    // Jika sedang edit jalan lain, batalkan dulu
    if (targetEditJalanId && targetEditJalanId !== id) {
        batalkanEditJalan();
    }

    targetEditJalanId = id;
    map.closePopup(); // Tutup popup info

    // Tampilkan panel info dan tombol simpan di sidebar
    document.getElementById('info-edit-jalan').style.display = 'block';
    document.getElementById('nama-jalan-edit').innerText = "Edit: " + namaJalan;
    document.getElementById('btn-simpan-edit-jalan').style.display = 'block';

    // Aktifkan Leaflet.Geoman khusus pada layer ini
    layer.pm.enable({
        allowSelfIntersection: false,
    });
}

function batalkanEditJalan() {
    if (targetEditJalanId && daftarPolyline[targetEditJalanId]) {
        daftarPolyline[targetEditJalanId].pm.disable();
    }
    targetEditJalanId = null;
    document.getElementById('info-edit-jalan').style.display = 'none';
    document.getElementById('btn-simpan-edit-jalan').style.display = 'none';
}

function simpanEditPolyline() {
    if (!targetEditJalanId) return;
    
    let layer = daftarPolyline[targetEditJalanId];
    if (!layer) return;

    // 1. Matikan mode edit
    layer.pm.disable();

    // 2. Kalkulasi ulang panjang
    let latlngsBaru = layer.getLatLngs();
    let panjangBaru = hitungPanjangJalan(latlngsBaru);

    // 3. Konversi ke GeoJSON
    let geojsonBaru = layer.toGeoJSON();

    let dataKirim = {
        id: targetEditJalanId,
        panjang_m: panjangBaru,
        geojson: geojsonBaru
    };

    fetch('update_jalan.php', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(dataKirim)
    })
    .then(res => res.json())
    .then(data => {
        if (data.status === 'success') {
            Toast.fire({ icon: 'success', title: `Bentuk Jalan Diperbarui!\nPanjang: ${panjangBaru.toFixed(0)}m` });
            batalkanEditJalan();
            
            // Reload halaman secara otomatis setelah 1.5 detik agar data popup ikut ter-refresh
            setTimeout(() => { window.location.reload(); }, 1500);
        } else {
            Toast.fire({ icon: 'error', title: 'Gagal memperbarui jalan: ' + data.message });
            batalkanEditJalan();
        }
    }).catch(error => console.error('Error:', error));
}


// ===========================================
// --- LOGIKA MODE EDIT POLYGON (KAVLING) ---
// ===========================================

function aktifkanEditKavling(id, namaKavling) {
    let layer = daftarPolygon[id];
    if (!layer) return;

    // Jika sedang edit kavling lain, batalkan dulu
    if (targetEditKavlingId && targetEditKavlingId !== id) {
        batalkanEditKavling();
    }

    targetEditKavlingId = id;
    map.closePopup();

    // Tampilkan panel info dan tombol simpan di sidebar
    document.getElementById('info-edit-kavling').style.display = 'block';
    document.getElementById('nama-kavling-edit').innerText = "Edit: " + namaKavling;
    document.getElementById('btn-simpan-edit-kavling').style.display = 'block';

    // Aktifkan Leaflet.Geoman khusus pada layer ini
    layer.pm.enable({
        allowSelfIntersection: false,
    });
}

function batalkanEditKavling() {
    if (targetEditKavlingId && daftarPolygon[targetEditKavlingId]) {
        daftarPolygon[targetEditKavlingId].pm.disable();
    }
    targetEditKavlingId = null;
    document.getElementById('info-edit-kavling').style.display = 'none';
    document.getElementById('btn-simpan-edit-kavling').style.display = 'none';
}

function simpanEditPolygon() {
    if (!targetEditKavlingId) return;
    
    let layer = daftarPolygon[targetEditKavlingId];
    if (!layer) return;

    layer.pm.disable();

    let latlngsBaru = layer.getLatLngs();
    let luasBaru = hitungLuasArea(latlngsBaru);
    let geojsonBaru = layer.toGeoJSON();

    let dataKirim = {
        id: targetEditKavlingId,
        luas_m2: luasBaru,
        geojson: geojsonBaru
    };

    fetch('update_area.php', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(dataKirim)
    })
    .then(res => res.json())
    .then(data => {
        if (data.status === 'success') {
            Toast.fire({ icon: 'success', title: `Bentuk Kavling Diperbarui!\nLuas: ${luasBaru.toFixed(0)}m²` });
            batalkanEditKavling();
            
            setTimeout(() => { window.location.reload(); }, 1500);
        } else {
            Toast.fire({ icon: 'error', title: 'Gagal memperbarui kavling: ' + data.message });
            batalkanEditKavling();
        }
    }).catch(error => console.error('Error:', error));
}