<?php
require_once 'db_pdo.php';
require_once 'haversine_helper.php';
require_once 'penduduk_feature_helper.php';
require_once 'auth.php';
require_admin_login(true);
header('Content-Type: application/json');

$input = readPendudukInput();

if (!$input || empty($input['id'])) {
    echo json_encode(['success' => false, 'message' => 'Input tidak valid']);
    exit;
}

try {
    ensurePendudukDistanceColumns($pdo);
    ensurePendudukFeatureSchema($pdo);

    $input_lat = floatval($input['lat']);
    $input_lng = floatval($input['lng']);
    $coverage = calculatePendudukCoverage($pdo, $input_lat, $input_lng);
    $buktiFile = saveUploadedEvidence('bukti_file');

    if ($buktiFile === null && !empty($input['existing_bukti_file'])) {
        $buktiFile = $input['existing_bukti_file'];
    }

    $stmt = $pdo->prepare("
        UPDATE penduduk_miskin 
        SET kk_nama=?, kk_nik=?, alamat=?, lat=?, lng=?, status_bantuan=?, kategori_kebutuhan=?, deskripsi_kebutuhan=?, tindak_lanjut=?, kondisi_rumah=?, penghasilan=?, catatan_survei=?, bukti_file=?, jenis_bantuan=?, tanggal_bantuan=?, ibadah_id=?, jarak_m=?, jarak_rute_m=?, is_blank_spot=?
        WHERE id=?
    ");
    $stmt->execute([
        $input['kk_nama'],
        $input['kk_nik'] ?? null,
        $input['alamat'],
        $input['lat'],
        $input['lng'],
        $input['status_bantuan'] ?? 'Belum dibantu',
        $input['kategori_kebutuhan'] ?? null,
        $input['deskripsi_kebutuhan'] ?? null,
        $input['tindak_lanjut'] ?? 'Belum disurvei',
        $input['kondisi_rumah'] ?? null,
        normalizeNonNegativeIntOrNull($input['penghasilan'] ?? '', 'Penghasilan'),
        $input['catatan_survei'] ?? null,
        $buktiFile,
        $input['jenis_bantuan'] ?? null,
        normalizeDateOrNull($input['tanggal_bantuan'] ?? null),
        $coverage['ibadah_id'],
        $coverage['jarak_m'],
        $coverage['jarak_rute_m'],
        $coverage['is_blank_spot'],
        $input['id']
    ]);

    // 4. Delete old anggota and insert new ones
    $pdo->prepare("DELETE FROM anggota_keluarga WHERE penduduk_id=?")->execute([$input['id']]);
    
    if (!empty($input['anggota']) && is_array($input['anggota'])) {
        $stmtAnggota = $pdo->prepare("INSERT INTO anggota_keluarga (penduduk_id, nama, hubungan, umur, pekerjaan) VALUES (?, ?, ?, ?, ?)");
        foreach ($input['anggota'] as $anggota) {
            $stmtAnggota->execute([
                $input['id'],
                $anggota['nama'],
                $anggota['hubungan'],
                $anggota['umur'] ?? null,
                $anggota['pekerjaan'] ?? null
            ]);
        }
    }

    updatePendudukPriority($pdo, (int)$input['id']);

    echo json_encode([
        'success' => true,
        'ibadah_id' => $coverage['ibadah_id'],
        'jarak_m' => $coverage['jarak_m'],
        'jarak_rute_m' => $coverage['jarak_rute_m'],
        'is_blank_spot' => $coverage['is_blank_spot']
    ]);
} catch (Exception $e) {
    echo json_encode(['success' => false, 'message' => $e->getMessage()]);
}