<?php
header("Content-Type: application/json; charset=UTF-8");
require_once '../auth_helper.php';
requireAdminOrPengelola();
include_once '../db_connect.php';

$id = 0;
$nama = '';
$kategori = 'Makan';
$jumlah_jiwa = 1;
$lat = 0.0;
$lng = 0.0;

if (!empty($_POST)) {
    $id          = (int)($_POST['id'] ?? 0);
    $nama        = $conn->real_escape_string($_POST['nama'] ?? '');
    $kategori    = $conn->real_escape_string($_POST['kategori_bantuan'] ?? 'Makan');
    $jumlah_jiwa = (int)($_POST['jumlah_jiwa'] ?? 1);
    $lat         = (float)($_POST['lat'] ?? 0);
    $lng         = (float)($_POST['lng'] ?? 0);
} else {
    $data = json_decode(file_get_contents("php://input"));
    if ($data) {
        $id          = (int)($data->id ?? 0);
        $nama        = $conn->real_escape_string($data->nama ?? '');
        $kategori    = $conn->real_escape_string($data->kategori_bantuan ?? 'Makan');
        $jumlah_jiwa = (int)($data->jumlah_jiwa ?? 1);
        $lat         = (float)($data->lat ?? 0);
        $lng         = (float)($data->lng ?? 0);
    }
}

if ($id > 0) {
    // Get current files to delete them if updated
    $old_foto_rumah = null;
    $old_foto_kk = null;
    $res = $conn->query("SELECT foto_rumah, foto_kk FROM penduduk_miskin WHERE id=$id");
    if ($res && $row = $res->fetch_assoc()) {
        $old_foto_rumah = $row['foto_rumah'];
        $old_foto_kk = $row['foto_kk'];
    }

    $upload_dir = "../../uploads/";
    if (!file_exists($upload_dir)) {
        mkdir($upload_dir, 0777, true);
    }

    $foto_rumah = null;
    $foto_kk = null;

    function uploadFile($fileKey, $upload_dir) {
        if (isset($_FILES[$fileKey]) && $_FILES[$fileKey]['error'] === UPLOAD_ERR_OK) {
            $fileTmpPath = $_FILES[$fileKey]['tmp_name'];
            $fileName = $_FILES[$fileKey]['name'];
            
            $fileNameCmps = explode(".", $fileName);
            $fileExtension = strtolower(end($fileNameCmps));
            
            $allowedfileExtensions = array('jpg', 'jpeg', 'png', 'gif');
            if (in_array($fileExtension, $allowedfileExtensions)) {
                $newFileName = uniqid() . '_' . preg_replace('/[^a-zA-Z0-9\._-]/', '_', $fileName);
                $dest_path = $upload_dir . $newFileName;
                
                if (move_uploaded_file($fileTmpPath, $dest_path)) {
                    return $newFileName;
                }
            }
        }
        return null;
    }

    $foto_rumah = uploadFile('foto_rumah', $upload_dir);
    $foto_kk = uploadFile('foto_kk', $upload_dir);

    // Build update fields
    $update_fields = [
        "nama='$nama'",
        "kategori_bantuan='$kategori'",
        "jumlah_jiwa=$jumlah_jiwa",
        "lat=$lat",
        "lng=$lng"
    ];

    if ($foto_rumah !== null) {
        $update_fields[] = "foto_rumah='$foto_rumah'";
        if ($old_foto_rumah && file_exists($upload_dir . $old_foto_rumah)) {
            unlink($upload_dir . $old_foto_rumah);
        }
    }
    if ($foto_kk !== null) {
        $update_fields[] = "foto_kk='$foto_kk'";
        if ($old_foto_kk && file_exists($upload_dir . $old_foto_kk)) {
            unlink($upload_dir . $old_foto_kk);
        }
    }

    $query = "UPDATE penduduk_miskin SET " . implode(", ", $update_fields) . " WHERE id=$id";

    if ($conn->query($query)) {
        echo json_encode(["status" => "success", "message" => "Update berhasil."]);
    } else {
        echo json_encode(["status" => "error", "message" => "Gagal update: " . $conn->error]);
    }
} else {
    echo json_encode(["status" => "error", "message" => "ID tidak diberikan."]);
}
?>