// --- Fitur Import GeoJSON ---

const fileGeoJson = document.getElementById('fileGeoJson');
let geoJsonLayers = {};
let geoJsonCounter = 0;

window.toggleGeoJsonMenu = function() {
    const list = document.getElementById('geoJsonFileList');
    const icon = document.getElementById('geoJsonToggleIcon');
    if (list.style.display === 'none') {
        list.style.display = 'block';
        icon.className = 'fas fa-minus';
    } else {
        list.style.display = 'none';
        icon.className = 'fas fa-plus';
    }
};

// Cek apakah fitur GeoJSON ini terlihat seperti data penduduk miskin
function isMiskinFeature(feature) {
    if (!feature || !feature.geometry || feature.geometry.type !== 'Point') return false;
    const props = feature.properties || {};
    const keys = Object.keys(props).map(k => k.toLowerCase());
    // Dianggap data miskin jika punya properti nama (dan bukan ibadah atau spbu)
    const hasNama = keys.some(k => ['nama', 'name', 'penduduk'].includes(k));
    const isIbadah = keys.some(k => ['jenis', 'radius', 'alamat'].includes(k));
    const isSpbu = keys.some(k => ['alamat_spbu', 'is_24_jam'].includes(k));
    return hasNama && !isIbadah && !isSpbu;
}

fileGeoJson.addEventListener('change', function(e) {
    const file = e.target.files[0];
    if (!file) return;

    const reader = new FileReader();
    reader.onload = function(event) {
        try {
            const geoJsonData = JSON.parse(event.target.result);
            const fileName = file.name;

            // Pisahkan fitur menjadi dua kelompok: miskin dan non-miskin
            const features = geoJsonData.type === 'FeatureCollection'
                ? geoJsonData.features
                : [geoJsonData];

            const miskinFeatures = features.filter(f => isMiskinFeature(f));
            const otherFeatures = features.filter(f => !isMiskinFeature(f));

            // ---- Proses fitur miskin: Simpan ke DB, lalu tampilkan seperti penduduk miskin ----
            if (miskinFeatures.length > 0) {
                const bulkData = miskinFeatures.map(f => {
                    const props = f.properties || {};
                    const coords = f.geometry.coordinates;
                    return {
                        nama:              props.nama || props.name || props.penduduk || 'Data Impor',
                        kategori_bantuan:  props.kategori_bantuan || props.kategori || props.bantuan || 'Makan',
                        jumlah_jiwa:       parseInt(props.jumlah_jiwa || props.jumlah || props.jiwa || 1, 10) || 1,
                        lat:               parseFloat(coords[1]),
                        lng:               parseFloat(coords[0])
                    };
                });

                fetch('api/penduduk_miskin/bulk_create.php', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify(bulkData)
                })
                .then(res => res.json())
                .then(data => {
                    if (data.status === 'success') {
                        // Reload layer penduduk miskin agar marker tampil dengan edit/hapus/log bantuan
                        if (typeof loadPendudukMiskin === 'function') {
                            loadPendudukMiskin();
                        }
                        if (typeof window.refreshActivePanel === 'function') {
                            window.refreshActivePanel();
                        }
                        showToast(data.message || 'Data berhasil diimpor ke layer Penduduk Miskin.', 'success');
                    } else {
                        showToast(data.message || 'Gagal menyimpan data miskin.', 'error');
                    }
                })
                .catch(err => {
                    console.error(err);
                    showToast('Gagal terhubung ke server saat menyimpan data miskin.', 'error');
                });
            }

            // ---- Proses fitur non-miskin: Render sebagai layer GeoJSON biasa ----
            if (otherFeatures.length > 0) {
                const layerId = 'gj_' + (++geoJsonCounter);
                const individualLayer = L.featureGroup();

                const otherGeoJson = {
                    type: 'FeatureCollection',
                    features: otherFeatures
                };

                L.geoJSON(otherGeoJson, {
                    pointToLayer: function(feature, latlng) {
                        const props = feature.properties || {};
                        let emoji = props.emoji;

                        if (!emoji) {
                            const text = JSON.stringify(props).toLowerCase();
                            if (text.includes('spbu'))      emoji = '⛽';
                            else if (text.includes('masjid'))    emoji = '🕌';
                            else if (text.includes('gereja'))    emoji = '⛪';
                            else if (text.includes('vihara'))    emoji = '🪷';
                            else if (text.includes('pura'))      emoji = '🛕';
                            else if (text.includes('kelenteng')) emoji = '🏮';
                            else emoji = '📍';
                        }

                        let cls = 'miskin-out';
                        if (emoji === '⛽') cls = 'spbu-24';
                        else if (['🕌','⛪','🛕','🪷','🏮'].includes(emoji)) cls = 'ibadah';

                        const icon = L.divIcon({
                            className: '',
                            html: `<div class="emoji-marker"><div class="bubble ${cls}"><span>${emoji}</span></div></div>`,
                            iconSize: [38, 38],
                            iconAnchor: [19, 38],
                            popupAnchor: [0, -40]
                        });

                        return L.marker(latlng, { icon: icon });
                    },
                    onEachFeature: function(feature, layer) {
                        if (feature.properties) {
                            let popupContent = '<h4>Informasi Feature</h4><ul style="list-style:none; padding:0; font-size:12px; margin: 0;">';
                            for (let key in feature.properties) {
                                popupContent += `<li><strong>${key}:</strong> ${feature.properties[key]}</li>`;
                            }
                            popupContent += '</ul>';
                            layer.bindPopup(popupContent);
                        }
                    },
                    style: function(feature) {
                        return {
                            color: (feature.properties && feature.properties.color) || '#3388ff',
                            weight: 2,
                            fillOpacity: 0.4
                        };
                    }
                }).addTo(individualLayer);

                individualLayer.addTo(map);
                geoJsonLayers[layerId] = individualLayer;

                // Tambahkan checkbox ke UI
                const container = document.getElementById('geoJsonLayersContainer');
                const label = document.createElement('label');
                label.className = 'layer-option';
                label.innerHTML = `<input type="checkbox" id="chk_${layerId}" checked> ${fileName}`;

                label.querySelector('input').addEventListener('change', function(e) {
                    if (e.target.checked) {
                        map.addLayer(geoJsonLayers[layerId]);
                    } else {
                        map.removeLayer(geoJsonLayers[layerId]);
                    }
                });

                container.appendChild(label);

                if (miskinFeatures.length === 0) {
                    showToast('File GeoJSON berhasil dimuat!', 'success');
                }
            }

            // Reset input file agar bisa import file yang sama
            fileGeoJson.value = '';

        } catch (error) {
            showToast('Gagal memproses file GeoJSON. Pastikan format valid.', 'error');
            console.error(error);
        }
    };
    reader.readAsText(file);
});