<?php
require_once __DIR__ . '/../config.php';
requireLogin();
$db = getDB();

// KPI Utama
$totalPenduduk = (int)$db->query("SELECT COUNT(*) FROM penduduk WHERE status_hidup='hidup'")->fetchColumn();
$totalKeluarga = (int)$db->query("SELECT COUNT(*) FROM keluarga")->fetchColumn();
$totalMiskin   = (int)$db->query("SELECT COUNT(*) FROM penduduk WHERE status_ekonomi='miskin' AND status_hidup='hidup'")->fetchColumn();
$totalRentan   = (int)$db->query("SELECT COUNT(*) FROM penduduk WHERE status_ekonomi='rentan' AND status_hidup='hidup'")->fetchColumn();
$totalMampu    = (int)$db->query("SELECT COUNT(*) FROM penduduk WHERE status_ekonomi='mampu' AND status_hidup='hidup'")->fetchColumn();
$totalLaporan  = (int)$db->query("SELECT COUNT(*) FROM laporan WHERE status != 'selesai'")->fetchColumn();
$laporanDarurat= (int)$db->query("SELECT COUNT(*) FROM laporan WHERE urgensi='darurat' AND status NOT IN ('selesai')")->fetchColumn();
$totalBantuan  = (int)$db->query("SELECT COUNT(*) FROM histori_bantuan WHERE status='disalurkan'")->fetchColumn();
$belumBantuan  = (int)$db->query("SELECT COUNT(*) FROM penduduk WHERE status_ekonomi IN ('miskin','rentan') AND status_hidup='hidup' AND id NOT IN (SELECT DISTINCT penduduk_id FROM histori_bantuan WHERE status='disalurkan')")->fetchColumn();
$unreadChat    = (int)$db->query("SELECT COUNT(*) FROM chat WHERE dibaca=0")->fetchColumn();

// Distribusi ekonomi per kelurahan
$byKelurahan = $db->query("SELECT k.kelurahan,
    SUM(CASE WHEN k.status_ekonomi='miskin' THEN 1 ELSE 0 END) as miskin,
    SUM(CASE WHEN k.status_ekonomi='rentan' THEN 1 ELSE 0 END) as rentan,
    SUM(CASE WHEN k.status_ekonomi='mampu'  THEN 1 ELSE 0 END) as mampu,
    COUNT(*) as total
    FROM keluarga k GROUP BY k.kelurahan ORDER BY miskin DESC LIMIT 10")->fetchAll();

// Distribusi bantuan per jenis
$byBantuan = $db->query("SELECT b.nama, b.jenis, COUNT(hb.id) as total_disalurkan
    FROM bantuan b LEFT JOIN histori_bantuan hb ON hb.bantuan_id=b.id AND hb.status='disalurkan'
    GROUP BY b.id ORDER BY total_disalurkan DESC")->fetchAll();

// Distribusi per rumah ibadah
$byRI = $db->query("SELECT ri.nama, ri.jenis, ri.lat, ri.lng,
    COUNT(DISTINCT k.id) as jumlah_kk,
    SUM(CASE WHEN k.status_ekonomi='miskin' THEN 1 ELSE 0 END) as kk_miskin,
    (SELECT COUNT(*) FROM v_penduduk p JOIN keluarga k2 ON k2.id=p.keluarga_id WHERE k2.rumah_ibadah_id=ri.id AND p.status_hidup='hidup') as jumlah_jiwa
    FROM rumah_ibadah ri LEFT JOIN keluarga k ON k.rumah_ibadah_id=ri.id
    GROUP BY ri.id ORDER BY kk_miskin DESC")->fetchAll();

// Profil umur
$byUmur = $db->query("SELECT profil_umur, COUNT(*) as jumlah
    FROM v_penduduk WHERE status_hidup='hidup' GROUP BY profil_umur")->fetchAll();

// Laporan per status
$byLaporan = $db->query("SELECT status, urgensi, COUNT(*) as jumlah
    FROM laporan GROUP BY status, urgensi ORDER BY FIELD(urgensi,'darurat','tinggi','sedang','rendah')")->fetchAll();

// GeoJSON penduduk untuk peta
$geoRows = $db->query("SELECT p.id, p.nik, p.nama, p.umur, p.profil_umur, p.status_ekonomi,
    p.kondisi_kesehatan, p.penghasilan, k.kelurahan, k.lat, k.lng, k.no_kk,
    (SELECT COUNT(*) FROM histori_bantuan hb WHERE hb.penduduk_id=p.id AND hb.status='disalurkan') as total_bantuan
    FROM v_penduduk p JOIN keluarga k ON k.id=p.keluarga_id
    WHERE p.status_hidup='hidup' AND k.lat IS NOT NULL AND k.lng IS NOT NULL
    LIMIT 1000")->fetchAll();

$features = [];
foreach ($geoRows as $r) {
    $features[] = [
        'type' => 'Feature',
        'geometry' => ['type'=>'Point','coordinates'=>[(float)$r['lng'],(float)$r['lat']]],
        'properties' => $r
    ];
}

// GeoJSON laporan untuk peta
$laporanRows = $db->query("SELECT id,deskripsi,lat,lng,urgensi,status,created_at,foto FROM laporan WHERE lat IS NOT NULL AND lng IS NOT NULL")->fetchAll();
$laporanFeatures = [];
foreach ($laporanRows as $r) {
    $laporanFeatures[] = [
        'type' => 'Feature',
        'geometry' => ['type'=>'Point','coordinates'=>[(float)$r['lng'],(float)$r['lat']]],
        'properties' => $r
    ];
}

jsonOk([
    'kpi' => [
        'total_penduduk'  => $totalPenduduk,
        'total_keluarga'  => $totalKeluarga,
        'total_miskin'    => $totalMiskin,
        'total_rentan'    => $totalRentan,
        'total_mampu'     => $totalMampu,
        'total_laporan_aktif' => $totalLaporan,
        'laporan_darurat' => $laporanDarurat,
        'total_bantuan_disalurkan' => $totalBantuan,
        'belum_dapat_bantuan' => $belumBantuan,
        'unread_chat'     => $unreadChat,
        'pct_miskin'      => $totalPenduduk ? round($totalMiskin/$totalPenduduk*100,1) : 0,
    ],
    'by_kelurahan' => $byKelurahan,
    'by_bantuan'   => $byBantuan,
    'by_ri'        => $byRI,
    'by_umur'      => $byUmur,
    'by_laporan'   => $byLaporan,
    'geojson_penduduk' => ['type'=>'FeatureCollection','features'=>$features],
    'geojson_laporan'  => ['type'=>'FeatureCollection','features'=>$laporanFeatures],
]);