<?php
// ================================================================
// API: Statistics
// ================================================================
require_once __DIR__ . '/../config/database.php';
require_once __DIR__ . '/../includes/functions.php';

header('Content-Type: application/json; charset=utf-8');
header('Access-Control-Allow-Origin: *');

$db = getDB();

// Total counts
$totalIbadah = $db->query("SELECT COUNT(*) FROM rumah_ibadah")->fetchColumn();
$totalMiskin = $db->query("SELECT COUNT(*) FROM penduduk_miskin")->fetchColumn();
$sudahDibantu = $db->query("SELECT COUNT(*) FROM penduduk_miskin WHERE status_bantuan='sudah'")->fetchColumn();
$belumDibantu = $db->query("SELECT COUNT(*) FROM penduduk_miskin WHERE status_bantuan='belum'")->fetchColumn();
$menunggu     = $db->query("SELECT COUNT(*) FROM penduduk_miskin WHERE status_bantuan='menunggu'")->fetchColumn();
$totalNominal = $db->query("SELECT COALESCE(SUM(nominal_bantuan),0) FROM penduduk_miskin WHERE status_bantuan='sudah' AND nominal_bantuan IS NOT NULL")->fetchColumn();
$totalNominalAll = $db->query("SELECT COALESCE(SUM(nominal_bantuan),0) FROM penduduk_miskin WHERE nominal_bantuan IS NOT NULL")->fetchColumn();

// Per jenis ibadah
$jenisStats = $db->query("
    SELECT jenis, COUNT(*) as total,
           (SELECT COUNT(*) FROM penduduk_miskin pm WHERE pm.rumah_ibadah_id = ri.id) AS binaan
    FROM rumah_ibadah ri
    GROUP BY jenis ORDER BY total DESC
")->fetchAll();

// Per kecamatan (top 5)
$kecamatanStats = $db->query("
    SELECT kecamatan, COUNT(*) as total,
           SUM(CASE WHEN status_bantuan='sudah' THEN 1 ELSE 0 END) AS sudah,
           SUM(CASE WHEN status_bantuan='belum' THEN 1 ELSE 0 END) AS belum
    FROM penduduk_miskin
    WHERE kecamatan != '' AND kecamatan IS NOT NULL
    GROUP BY kecamatan ORDER BY total DESC LIMIT 5
")->fetchAll();

// Data terbaru (5 data)
$recentMiskin = $db->query("
    SELECT pm.id, pm.kk_nama, pm.status_bantuan, pm.created_at,
           ri.nama AS ibadah_nama
    FROM penduduk_miskin pm
    LEFT JOIN rumah_ibadah ri ON pm.rumah_ibadah_id = ri.id
    ORDER BY pm.created_at DESC LIMIT 5
")->fetchAll();

jsonResponse([
    'success' => true,
    'data' => [
        'total_ibadah'       => (int)$totalIbadah,
        'total_miskin'       => (int)$totalMiskin,
        'sudah_dibantu'      => (int)$sudahDibantu,
        'belum_dibantu'      => (int)$belumDibantu,
        'menunggu'           => (int)$menunggu,
        'total_nominal'      => (float)$totalNominal,
        'total_nominal_all'  => (float)$totalNominalAll,
        'jenis_stats'        => $jenisStats,
        'kecamatan_stats'    => $kecamatanStats,
        'recent_miskin'      => $recentMiskin,
    ]
]);