<?php
require_once __DIR__ . '/auth.php';
require_login(true);

$bulan = (int) getv('bulan', date('n'));
$tahun = (int) getv('tahun', date('Y'));
$rumah_filter = getv('rumah_ibadah_id', '');
$agama_filter = getv('agama', '');
$program_filter = getv('program_id', '');
$status_filter = getv('status_penyaluran', 'semua');
$jenis_filter = getv('jenis_bantuan', '');

if ($bulan < 1 || $bulan > 12 || $tahun < 2000) json_response('err', 'Filter bulan/tahun tidak valid.');
if (!valid_enum($status_filter, ['semua','belum_diberi','sudah_diberi','belum_memenuhi_target','sesuai_target','melebihi_target'])) json_response('err', 'Status penyaluran tidak valid.');

$where = ["pb.status_pengajuan='diterima'", "COALESCE(pb.status_hapus,'normal')<>'disetujui'", "COALESCE(ri.status_hapus,'normal')<>'disetujui'", "prog.bulan=?", "prog.tahun=?", "prog.status_program<>'dibatalkan'"];
$types = 'ii';
$params = [$bulan, $tahun];

if ($program_filter !== '') {
    $where[] = 'prog.id=?';
    $types .= 'i';
    $params[] = (int)$program_filter;
}
if ($jenis_filter !== '') {
    $where[] = 'prog.jenis_bantuan=?';
    $types .= 's';
    $params[] = $jenis_filter;
}
if ($agama_filter !== '') {
    $where[] = 'ri.agama=?';
    $types .= 's';
    $params[] = $agama_filter;
}
if ($rumah_filter !== '') {
    $where[] = 'ri.id=?';
    $types .= 'i';
    $params[] = (int)$rumah_filter;
}

if ($_SESSION['role'] === 'admin_rumah_ibadah') {
    $ids = get_admin_rumah_ibadah_ids((int)$_SESSION['user_id'], true);
    if (empty($ids)) json_response('ok', 'Admin belum memiliki rumah ibadah diterima.', ['rows'=>[], 'rekap'=>[]]);
    $where[] = build_in_condition('ri.id', $ids, $types, $params);
} elseif ($_SESSION['role'] === 'penerima') {
    $where[] = 'pb.user_id=?';
    $types .= 'i';
    $params[] = (int)$_SESSION['user_id'];
}

$whereSql = implode(' AND ', $where);

$sql = "
SELECT
  pb.id AS penerima_id,
  pb.nama_penerima,
  pb.no_hp,
  pb.alamat,
  pb.jenis_bantuan AS jenis_bantuan_diminta,
  ri.id AS rumah_ibadah_id,
  ri.nama_rumah_ibadah,
  ri.agama,
  prog.id AS program_id,
  prog.nama_program,
  prog.status_program,
  prog.jenis_bantuan,
  prog.bulan,
  prog.tahun,
  prog.target_frekuensi,
  prog.nominal,
  prog.jumlah_item,
  COALESCE(cnt.jumlah_penyaluran, 0) AS jumlah_penyaluran,
  cnt.tanggal_terakhir,
  cnt.riwayat_penyaluran
FROM penerima_bantuan pb
JOIN rumah_ibadah ri ON ri.id = pb.rumah_ibadah_id
JOIN program_bantuan prog ON prog.rumah_ibadah_id = ri.id
LEFT JOIN (
  SELECT penerima_id, program_id,
         COUNT(id) AS jumlah_penyaluran,
         MAX(tanggal_penyaluran) AS tanggal_terakhir,
         GROUP_CONCAT(CONCAT(tanggal_penyaluran, ' | ', jenis_bantuan, ' | Rp', COALESCE(nominal,0), ' | Item: ', COALESCE(jumlah_item,''), ' | ke-', COALESCE(bantuan_ke,0), ' | ', COALESCE(keterangan,'')) ORDER BY tanggal_penyaluran SEPARATOR ';;') AS riwayat_penyaluran
  FROM penyaluran_bantuan
  WHERE MONTH(tanggal_penyaluran)=? AND YEAR(tanggal_penyaluran)=?
  GROUP BY penerima_id, program_id
) cnt ON cnt.penerima_id = pb.id AND cnt.program_id = prog.id
WHERE $whereSql
ORDER BY ri.nama_rumah_ibadah ASC, pb.nama_penerima ASC, prog.nama_program ASC
";

// Dua parameter pertama untuk subquery count bulan/tahun, lalu parameter where.
$bindTypes = 'ii' . $types;
$bindParams = array_merge([$bulan, $tahun], $params);
$stmt = $koneksi->prepare($sql);
if (!$stmt) json_response('err', 'Query laporan gagal disiapkan: ' . $koneksi->error);
stmt_bind($stmt, $bindTypes, $bindParams);
$stmt->execute();
$res = $stmt->get_result();

$rows = [];
$rekap = [
    'total' => 0,
    'belum_diberi' => 0,
    'sudah_diberi' => 0,
    'belum_memenuhi_target' => 0,
    'sesuai_target' => 0,
    'melebihi_target' => 0
];

while ($row = $res->fetch_assoc()) {
    $jumlah = (int)$row['jumlah_penyaluran'];
    $target = max(1, (int)$row['target_frekuensi']);
    if ($jumlah === 0) $status = 'belum_diberi';
    elseif ($jumlah > 0 && $jumlah < $target) $status = 'belum_memenuhi_target';
    elseif ($jumlah === $target) $status = 'sesuai_target';
    else $status = 'melebihi_target';

    $row['status_penyaluran'] = $status;
    $row['riwayat'] = $row['riwayat_penyaluran'] ? explode(';;', $row['riwayat_penyaluran']) : [];

    $include = false;
    if ($status_filter === 'semua') $include = true;
    elseif ($status_filter === 'sudah_diberi') $include = $jumlah > 0;
    else $include = ($status_filter === $status);

    if ($include) {
        $rows[] = $row;
        $rekap['total']++;
        if ($jumlah > 0) $rekap['sudah_diberi']++;
        else $rekap['belum_diberi']++;
        if ($status === 'belum_memenuhi_target') $rekap['belum_memenuhi_target']++;
        if ($status === 'sesuai_target') $rekap['sesuai_target']++;
        if ($status === 'melebihi_target') $rekap['melebihi_target']++;
    }
}

json_response('ok', 'Laporan penyaluran berhasil diambil.', ['rows' => $rows, 'rekap' => $rekap]);
?>