@extends('layout.main')

@push('style')
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/leaflet.draw.css" />

<style>
    #map {
        height: 600px;
        width: 100%;
        background-color: #f8f9fa;
        z-index: 1;
    }
</style>
@endpush

@section('content')
<div class="container-xxl flex-grow-1 container-p-y">
    <div class="card">
        <div class="card-header border-bottom mb-4 d-flex justify-content-between align-items-center">
            <h5 class="card-title mb-0">Edit Data Lahan</h5>
            <a href="{{ route('lahan-cpcl.index') }}" class="btn btn-sm btn-label-secondary">
                <i class="ti tabler-arrow-left me-1"></i> Kembali
            </a>
        </div>
        
        <div class="card-body">
            <form id="formLahanCPCL" action="{{ route('lahan-cpcl.update', $lahan->id) }}" method="POST">
                @csrf
                @method('PUT')
                
                <div class="row">
                    <div class="col-lg-6 mb-4">
                        <h6 class="mb-3 text-primary"><i class="ti tabler-info-circle me-1"></i> Form Info Lahan</h6>
                        
                        <div class="mb-3">
                            <label class="form-label">Nama Lahan <span class="text-danger">*</span></label>
                            <input type="text" name="nama" class="form-control" value="{{ old('nama', $lahan->nama) }}" placeholder="Masukkan nama lahan" required />
                        </div>
                        
                        <div class="mb-3">
                            <label class="form-label">Pemilik Pemilik<span class="text-danger">*</span></label>
                            <input type="text" name="nama_pemilik" class="form-control" value="{{ old('nama_pemilik', $lahan->nama_pemilik) }}" placeholder="Masukkan nama pemilik" required />
                        </div>

                        <div class="row">
                            <div class="col-md-6 mb-3">
                                <label class="form-label">Status Kepemilikan <span class="text-danger">*</span></label>
                                <select name="status_kepemilikan" id="status_kepemilikan" class="form-select" required>
                                    <option value="">Pilih Status</option>
                                    @php $status = old('status_kepemilikan', $lahan->status_kepemilikan->value); @endphp
                                    @foreach(App\Enums\StatusLahan::cases() as $lahanEnum)
                                        <option value="{{ $lahanEnum->value }}" {{ old('status_kepemilikan') == $lahanEnum->value ? 'selected' : '' }}>
                                            {{ ucfirst($lahanEnum->value) }}
                                        </option>
                                    @endforeach
                                </select>
                            </div>
                            <div class="col-md-6 mb-3">
                                <label class="form-label">Luas Lahan (Ha/m2) <span class="text-danger">*</span></label>
                                <input type="number" step="0.01" name="luas_lahan" class="form-control" value="{{ old('luas_lahan', $lahan->luas_lahan) }}" placeholder="Contoh: 1.5" required />
                            </div>
                        </div>

                        <hr class="my-4">
                        <h6 class="mb-3 text-primary"><i class="ti tabler-map-pin me-1"></i> Lokasi Wilayah</h6>

                        @php
                            $selectedDesa = $lahan->desakelurahan ?? null;
                            $selectedKec  = $selectedDesa ? $selectedDesa->kecamatan : null;
                            $selectedKab  = $selectedKec ? $selectedKec->kabupatenkota : null;
                            $selectedProv = $selectedKab ? $selectedKab->provinsi : null;
                        @endphp

                        <div class="row">
                            <div class="col-md-6 mb-3">
                                <label class="form-label">Provinsi <span class="text-danger">*</span></label>
                                <select name="provinsi_id" id="provinsi_id" class="form-select" required>
                                    <option value="" data-path="">Pilih Provinsi</option>
                                    @foreach($provinsi as $prov)
                                        <option value="{{ $prov->id }}" data-path="{{ is_string($prov->path) ? $prov->path : json_encode($prov->path) }}" {{ ($selectedProv && $selectedProv->id == $prov->id) ? 'selected' : '' }}>
                                            {{ $prov->nama }}
                                        </option>
                                    @endforeach
                                </select>
                            </div>
                            <div class="col-md-6 mb-3">
                                <label class="form-label">Kabupaten/Kota <span class="text-danger">*</span></label>
                                <select name="kabupatenkota_id" id="kabupatenkota_id" class="form-select" required>
                                    <option value="" data-path="">Pilih Kabupaten/Kota</option>
                                    @if($selectedKab)
                                        <option value="{{ $selectedKab->id }}" selected data-path="{{ is_string($selectedKab->path) ? $selectedKab->path : json_encode($selectedKab->path) }}">{{ $selectedKab->nama }}</option>
                                    @endif
                                </select>
                            </div>
                        </div>

                        <div class="row">
                            <div class="col-md-6 mb-3">
                                <label class="form-label">Kecamatan <span class="text-danger">*</span></label>
                                <select name="kecamatan_id" id="kecamatan_id" class="form-select" required>
                                    <option value="" data-path="">Pilih Kecamatan</option>
                                    @if($selectedKec)
                                        <option value="{{ $selectedKec->id }}" selected data-path="{{ is_string($selectedKec->path) ? $selectedKec->path : json_encode($selectedKec->path) }}">{{ $selectedKec->nama }}</option>
                                    @endif
                                </select>
                            </div>
                            <div class="col-md-6 mb-3">
                                <label class="form-label">Desa/Kelurahan <span class="text-danger">*</span></label>
                                <select name="desa_kelurahan_id" id="desa_kelurahan_id" class="form-select" required>
                                    <option value="" data-path="">Pilih Desa/Kelurahan</option>
                                    @if($selectedDesa)
                                        <option value="{{ $selectedDesa->id }}" selected data-path="{{ is_string($selectedDesa->path) ? $selectedDesa->path : json_encode($selectedDesa->path) }}">{{ $selectedDesa->nama }}</option>
                                    @endif
                                </select>
                            </div>
                        </div>

                        <div class="mt-4">
                            <label class="form-label">Raw Data Koordinat Lahan (Auto-generated JSON) <span class="text-danger">*</span></label>
                            <textarea name="path" id="path" class="form-control bg-lighter font-monospace" rows="4" readonly required placeholder="Koordinat akan terisi otomatis setelah Anda menggambar polygon di peta...">{{ old('path', is_string($lahan->path) ? $lahan->path : json_encode($lahan->path)) }}</textarea>
                            <small class="text-muted">Gunakan tombol edit (pensil) atau hapus (tong sampah) di peta untuk mengubah bentuk lahan.</small>
                        </div>
                    </div>

                    <div class="col-lg-6 mb-4">
                        <div class="d-flex justify-content-between align-items-center mb-3">
                            <h6 class="text-primary mb-0"><i class="ti tabler-map me-1"></i> Gambar Area Lahan</h6>
                            <span class="badge bg-label-warning">Mode Edit Polygon Aktif</span>
                        </div>
                        
                        <div id="map" class="border rounded shadow-sm"></div>
                    </div>
                </div>

                <div class="row mt-3">
                    <div class="col-12 text-end">
                        <a href="{{ route('lahan.index') }}" class="btn btn-label-secondary me-2">Batal</a>
                        <button type="submit" class="btn btn-primary"><i class="ti tabler-device-floppy me-2"></i> Update Data</button>
                    </div>
                </div>

            </form>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/leaflet.draw.js"></script>
<script>
    document.addEventListener("DOMContentLoaded", function() {

        let map = L.map('map').setView([-0.789275, 113.921327], 5);

        L.tileLayer('http://{s}.google.com/vt/lyrs=s,h&x={x}&y={y}&z={z}', {
            maxZoom: 22,
            subdomains: ['mt0', 'mt1', 'mt2', 'mt3'],
            attribution: '&copy; Google Maps Satellite'
        }).addTo(map);

        let regionBoundaryLayer = L.featureGroup().addTo(map);

        function focusToRegionBoundary(selectElement, shouldZoom = true) {
            regionBoundaryLayer.clearLayers();

            let selectedOption = selectElement.options[selectElement.selectedIndex];
            if (!selectedOption || !selectedOption.hasAttribute('data-path')) return;

            let pathStr = selectedOption.getAttribute('data-path');
            if (!pathStr || pathStr === "null" || pathStr === "") return;

            try {
                let rawData = typeof pathStr === 'string' ? JSON.parse(pathStr) : pathStr;
                
                if (Array.isArray(rawData) && rawData.length > 0) {
                    function formatCoordinates(coords) {
                        if (coords.length === 2 && typeof coords[0] === 'number') {
                            return [coords[0], coords[1]];
                        }
                        return coords.map(formatCoordinates);
                    }

                    let latLngs = formatCoordinates(rawData);

                    let polygon = L.polygon(latLngs, {
                        color: '#ffc107', 
                        fillColor: '#ffc107',
                        fillOpacity: 0.15,
                        weight: 3,
                        dashArray: '8, 6',
                        interactive: false
                    });

                    regionBoundaryLayer.addLayer(polygon);
                    if (shouldZoom) map.fitBounds(polygon.getBounds(), { padding: [20, 20] });
                }
            } catch (error) {
                console.error("Format JSON path wilayah tidak valid:", error);
            }
        }

        let drawnItems = new L.FeatureGroup();
        map.addLayer(drawnItems);

        let drawControl = new L.Control.Draw({
            draw: {
                polygon: {
                    allowIntersection: false, 
                    showArea: true, 
                    shapeOptions: { color: '#28c76f', fillColor: '#28c76f', fillOpacity: 0.4, weight: 3 }
                },
                polyline: false, circle: false, rectangle: false, marker: false, circlemarker: false
            },
            edit: {
                featureGroup: drawnItems,
                remove: true
            }
        });
        map.addControl(drawControl);

        let rawLahanPath = document.getElementById('path').value;
        if (rawLahanPath) {
            try {
                let parsedPath = JSON.parse(rawLahanPath);
                if (Array.isArray(parsedPath) && parsedPath.length > 0) {
                    let existingLatLngs = parsedPath.map(function(coord) {
                        return [coord[1], coord[0]]; 
                    });

                    let existingPolygon = L.polygon(existingLatLngs, {
                        color: '#28c76f', fillColor: '#28c76f', fillOpacity: 0.4, weight: 3
                    });

                    drawnItems.addLayer(existingPolygon);
                    
                    setTimeout(() => { map.fitBounds(existingPolygon.getBounds(), { padding: [30, 30] }); }, 500);
                }
            } catch (e) {
                console.error("Gagal merender polygon lahan eksisting: ", e);
            }
        }

        map.on(L.Draw.Event.CREATED, function (e) {
            let layer = e.layer;
            drawnItems.clearLayers(); 
            drawnItems.addLayer(layer);
            updatePathTextarea(layer);
        });

        map.on(L.Draw.Event.EDITED, function (e) {
            e.layers.eachLayer(function (layer) {
                updatePathTextarea(layer);
            });
        });

        map.on(L.Draw.Event.DELETED, function () {
            document.getElementById('path').value = '';
            
            let luasInput = document.querySelector('input[name="luas_lahan"]');
            if (luasInput) luasInput.value = '';
        });

        function updatePathTextarea(layer) {
            let latlngs = layer.getLatLngs()[0];
            
            let pathData = latlngs.map(function(latlng) {
                return [latlng.lng, latlng.lat]; 
            });
            document.getElementById('path').value = JSON.stringify(pathData);

            let areaSquareMeters = L.GeometryUtil.geodesicArea(latlngs);
            let areaHectares = areaSquareMeters / 10000;

            let luasInput = document.querySelector('input[name="luas_lahan"]');
            if (luasInput) {
                luasInput.value = areaHectares.toFixed(2);
                luasInput.style.transition = "background-color 0.5s ease";
                luasInput.style.backgroundColor = "#e8fdf0"; 
                
                setTimeout(() => {
                    luasInput.style.backgroundColor = ""; 
                }, 1500);
            }
        }

        const provSelect = document.getElementById('provinsi_id');
        const kabSelect = document.getElementById('kabupatenkota_id');
        const kecSelect = document.getElementById('kecamatan_id');
        const desaSelect = document.getElementById('desa_kelurahan_id');

        if (desaSelect.value) focusToRegionBoundary(desaSelect, false);
        else if (provSelect.value) focusToRegionBoundary(provSelect, false);

        function resetDropdown(element, defaultText) {
            element.innerHTML = `<option value="" data-path="">${defaultText}</option>`;
            element.disabled = true;
        }

        provSelect.addEventListener('change', function() {
            let provId = this.value;
            focusToRegionBoundary(this);

            resetDropdown(kabSelect, 'Pilih Kabupaten/Kota');
            resetDropdown(kecSelect, 'Pilih Kecamatan');
            resetDropdown(desaSelect, 'Pilih Desa/Kelurahan');

            if (provId) {
                kabSelect.innerHTML = '<option value="" data-path="">Memuat...</option>';
                fetch(`{{ url('kabupatenkotabyprovinsi') }}/${provId}`)
                    .then(response => response.json())
                    .then(data => {
                        resetDropdown(kabSelect, 'Pilih Kabupaten/Kota');
                        kabSelect.disabled = false;
                        data.forEach(item => {
                            let option = new Option(item.nama, item.id);
                            if(item.path) {
                                option.setAttribute('data-path', typeof item.path === 'string' ? item.path : JSON.stringify(item.path));
                            }
                            kabSelect.add(option);
                        });
                    })
                    .catch(error => console.error('Error fetching Kabupaten:', error));
            }
        });

        kabSelect.addEventListener('change', function() {
            let kabId = this.value;
            focusToRegionBoundary(this);

            resetDropdown(kecSelect, 'Pilih Kecamatan');
            resetDropdown(desaSelect, 'Pilih Desa/Kelurahan');

            if (kabId) {
                kecSelect.innerHTML = '<option value="" data-path="">Memuat...</option>';
                fetch(`{{ url('kecamatanbykabupatenkota') }}/${kabId}`)
                    .then(response => response.json())
                    .then(data => {
                        resetDropdown(kecSelect, 'Pilih Kecamatan');
                        kecSelect.disabled = false;
                        data.forEach(item => {
                            let option = new Option(item.nama, item.id);
                            if(item.path) {
                                option.setAttribute('data-path', typeof item.path === 'string' ? item.path : JSON.stringify(item.path));
                            }
                            kecSelect.add(option);
                        });
                    })
                    .catch(error => console.error('Error fetching Kecamatan:', error));
            }
        });

        kecSelect.addEventListener('change', function() {
            let kecId = this.value;
            focusToRegionBoundary(this);

            resetDropdown(desaSelect, 'Pilih Desa/Kelurahan');

            if (kecId) {
                desaSelect.innerHTML = '<option value="" data-path="">Memuat...</option>';
                fetch(`{{ url('desakelurahanbykecamatan') }}/${kecId}`)
                    .then(response => response.json())
                    .then(data => {
                        resetDropdown(desaSelect, 'Pilih Desa/Kelurahan');
                        desaSelect.disabled = false;
                        data.forEach(item => {
                            let option = new Option(item.nama, item.id);
                            if(item.path) {
                                option.setAttribute('data-path', typeof item.path === 'string' ? item.path : JSON.stringify(item.path));
                            }
                            desaSelect.add(option);
                        });
                    })
                    .catch(error => console.error('Error fetching Desa:', error));
            }
        });

        desaSelect.addEventListener('change', function() {
            focusToRegionBoundary(this);
        });

        const formLahanCPCL = document.getElementById('formLahanCPCL');
            
        if(formLahanCPCL) {
            formLahanCPCL.addEventListener('submit', function(e) {
                e.preventDefault();

                let form = this;
                let formData = new FormData(form);
                let submitBtn = form.querySelector('button[type="submit"]');
                let originalBtnText = submitBtn.innerHTML;

                submitBtn.disabled = true;
                submitBtn.innerHTML = 'Menyimpan...';

                fetch(form.action, {
                    method: 'POST', 
                    body: formData,
                    headers: {
                        'X-Requested-With': 'XMLHttpRequest',
                        'Accept': 'application/json'
                    }
                })
                .then(response => response.json())
                .then(data => {
                    submitBtn.disabled = false;
                    submitBtn.innerHTML = originalBtnText;

                    if (data.status === 'success') {
                        Swal.fire({
                            icon: 'success',
                            title: 'Berhasil!',
                            text: data.message,
                            showConfirmButton: false,
                            timer: 2000 
                        }).then(() => {
                            window.location.href = "{{ route('lahan-cpcl.index') }}";
                        });
                    } else {
                        let errorMsg = data.message || 'Terjadi kesalahan saat menyimpan data.';
                        if (data.errors) {
                            errorMsg = Object.values(data.errors).map(err => err.join(', ')).join('<br>');
                        }
                        
                        Swal.fire({
                            icon: 'error',
                            title: 'Gagal Menyimpan!',
                            html: errorMsg
                        });
                    }
                })
                .catch(error => {
                    submitBtn.disabled = false;
                    submitBtn.innerHTML = originalBtnText;
                    
                    Swal.fire({
                        icon: 'error',
                        title: 'Error Sistem',
                        text: 'Terjadi kesalahan pada server atau koneksi internet.'
                    });
                    console.error('Error:', error);
                });
            });
        }
    });
</script>
@endpush