<?php
/**
 * stats_extended.php
 * Dashboard terintegrasi: webgis_poverty + jalan + spbu + penduduk choropleth
 */
header('Content-Type: application/json; charset=UTF-8');
require_once '../auth_helper.php';
requireLogin();

// ── Helper: buat koneksi terpisah ─────────────────────────────────────────
function makeConn($dbName) {
    $c = new mysqli("localhost", "root", "", $dbName);
    if ($c->connect_error) return null;
    $c->set_charset("utf8mb4");
    return $c;
}

// ── Koneksi ke masing-masing database ────────────────────────────────────
$connPoverty  = makeConn("webgis_poverty");   // atau "webgis" sesuai db.sql
$connJalan    = makeConn("jalan");
$connSpbu     = makeConn("spbu");

// ── 1. Data dari webgis_poverty (kemiskinan) ─────────────────────────────
$poverty = [
    'total_miskin'    => 0,
    'total_jiwa'      => 0,
    'total_ibadah'    => 0,
    'total_log'       => 0,
    'terurus'         => 0,
    'tidak_terurus'   => 0,
    'pct_terurus'     => 0,
    'distribusi'      => ['kategori' => [], 'tipe_bantuan' => [], 'per_bulan' => []],
];

if ($connPoverty) {
    // Total KK miskin & jiwa
    $r = $connPoverty->query("SELECT COUNT(*) as c, COALESCE(SUM(jumlah_jiwa),0) as j FROM penduduk_miskin");
    if ($r && $row = $r->fetch_assoc()) {
        $poverty['total_miskin'] = (int)$row['c'];
        $poverty['total_jiwa']   = (int)$row['j'];
    }

    // Total rumah ibadah
    $r = $connPoverty->query("SELECT COUNT(*) as c FROM rumah_ibadah");
    if ($r && $row = $r->fetch_assoc()) $poverty['total_ibadah'] = (int)$row['c'];

    // Total log bantuan
    $r = $connPoverty->query("SELECT COUNT(*) as c FROM log_bantuan");
    if ($r && $row = $r->fetch_assoc()) $poverty['total_log'] = (int)$row['c'];

    // Kategori bantuan
    $r = $connPoverty->query("SELECT kategori_bantuan, COUNT(*) as c FROM penduduk_miskin GROUP BY kategori_bantuan");
    if ($r) while ($row = $r->fetch_assoc()) $poverty['distribusi']['kategori'][$row['kategori_bantuan']] = (int)$row['c'];

    // Tipe bantuan dari log
    $r = $connPoverty->query("SELECT tipe_bantuan, COUNT(*) as c FROM log_bantuan GROUP BY tipe_bantuan");
    if ($r) while ($row = $r->fetch_assoc()) $poverty['distribusi']['tipe_bantuan'][$row['tipe_bantuan']] = (int)$row['c'];

    // Bantuan per bulan (6 bulan terakhir)
    $r = $connPoverty->query("
        SELECT DATE_FORMAT(tanggal,'%Y-%m') as bulan, COUNT(*) as cnt
        FROM log_bantuan
        WHERE tanggal >= DATE_SUB(CURDATE(), INTERVAL 6 MONTH)
        GROUP BY bulan ORDER BY bulan ASC
    ");
    if ($r) while ($row = $r->fetch_assoc()) $poverty['distribusi']['per_bulan'][] = $row;

    // Terurus vs tidak (radius sederhana: ada di radius salah satu ibadah)
    $ibadahRes = $connPoverty->query("SELECT lat, lng, radius FROM rumah_ibadah");
    $ibadahArr = [];
    if ($ibadahRes) while ($row = $ibadahRes->fetch_assoc()) $ibadahArr[] = $row;

    $miskinRes = $connPoverty->query("SELECT lat, lng FROM penduduk_miskin");
    if ($miskinRes) {
        while ($m = $miskinRes->fetch_assoc()) {
            $inRadius = false;
            foreach ($ibadahArr as $ib) {
                $dlat = deg2rad($ib['lat'] - $m['lat']);
                $dlng = deg2rad($ib['lng'] - $m['lng']);
                $a = sin($dlat/2)**2 + cos(deg2rad($m['lat']))*cos(deg2rad($ib['lat']))*sin($dlng/2)**2;
                $dist = 6371000 * 2 * atan2(sqrt($a), sqrt(1-$a));
                if ($dist <= (float)$ib['radius']) { $inRadius = true; break; }
            }
            if ($inRadius) $poverty['terurus']++; else $poverty['tidak_terurus']++;
        }
        $tot = $poverty['total_miskin'];
        $poverty['pct_terurus'] = $tot > 0 ? round($poverty['terurus'] / $tot * 100, 1) : 0;
    }
    $connPoverty->close();
}

// ── 2. Data Jalan ─────────────────────────────────────────────────────────
$jalan = [
    'total_jalan'     => 0,
    'total_panjang_m' => 0,
    'per_status'      => [],
    'total_parsil'    => 0,
    'total_luas_m2'   => 0,
    'per_kepemilikan' => [],
];

if ($connJalan) {
    $r = $connJalan->query("SELECT COUNT(*) as c, COALESCE(SUM(panjang_meter),0) as p FROM jalan");
    if ($r && $row = $r->fetch_assoc()) {
        $jalan['total_jalan']     = (int)$row['c'];
        $jalan['total_panjang_m'] = (float)$row['p'];
    }

    $r = $connJalan->query("SELECT status_jalan, COUNT(*) as c FROM jalan GROUP BY status_jalan");
    if ($r) while ($row = $r->fetch_assoc()) $jalan['per_status'][$row['status_jalan']] = (int)$row['c'];

    $r = $connJalan->query("SELECT COUNT(*) as c, COALESCE(SUM(luas_m2),0) as l FROM parsil_tanah");
    if ($r && $row = $r->fetch_assoc()) {
        $jalan['total_parsil']   = (int)$row['c'];
        $jalan['total_luas_m2']  = (float)$row['l'];
    }

    $r = $connJalan->query("SELECT status_kepemilikan, COUNT(*) as c FROM parsil_tanah GROUP BY status_kepemilikan");
    if ($r) while ($row = $r->fetch_assoc()) $jalan['per_kepemilikan'][$row['status_kepemilikan']] = (int)$row['c'];

    $connJalan->close();
}

// ── 3. Data SPBU ──────────────────────────────────────────────────────────
$spbu = [
    'total_spbu'    => 0,
    'buka_24_jam'   => 0,
    'tidak_24_jam'  => 0,
    'list'          => [],
];

if ($connSpbu) {
    $r = $connSpbu->query("SELECT COUNT(*) as c FROM spbu");
    if ($r && $row = $r->fetch_assoc()) $spbu['total_spbu'] = (int)$row['c'];

    $r = $connSpbu->query("SELECT SUM(buka_24_jam=1) as buka, SUM(buka_24_jam=0) as tidak FROM spbu");
    if ($r && $row = $r->fetch_assoc()) {
        $spbu['buka_24_jam']  = (int)$row['buka'];
        $spbu['tidak_24_jam'] = (int)$row['tidak'];
    }

    $r = $connSpbu->query("SELECT nama_spbu, nomor_wa, buka_24_jam, latitude, longitude FROM spbu ORDER BY nama_spbu");
    if ($r) while ($row = $r->fetch_assoc()) $spbu['list'][] = $row;

    $connSpbu->close();
}

// ── 4. Data Penduduk (choropleth — static dari pontianak.json) ────────────
// Data kepadatan per kecamatan sudah ada di file JS, ringkasan di sini
$penduduk = [
    'kecamatan' => [
        ['nama' => 'Pontianak Barat',    'density' => 9.331],
        ['nama' => 'Pontianak Kota',     'density' => 8.102],
        ['nama' => 'Pontianak Timur',    'density' => 9.196],
        ['nama' => 'Pontianak Selatan',  'density' => 5.673],
        ['nama' => 'Pontianak Utara',    'density' => 3.642],
        ['nama' => 'Pontianak Tenggara', 'density' => 3.103],
    ]
];
$penduduk['total_kecamatan'] = count($penduduk['kecamatan']);
$penduduk['rata_density']    = round(array_sum(array_column($penduduk['kecamatan'],'density')) / $penduduk['total_kecamatan'], 3);
$penduduk['terpadat']        = $penduduk['kecamatan'][array_search(max(array_column($penduduk['kecamatan'],'density')), array_column($penduduk['kecamatan'],'density'))]['nama'];

// ── Output ────────────────────────────────────────────────────────────────
echo json_encode([
    'status'   => 'success',
    'poverty'  => $poverty,
    'jalan'    => $jalan,
    'spbu'     => $spbu,
    'penduduk' => $penduduk,
], JSON_UNESCAPED_UNICODE);