const FIELD_LABELS: Record<string, string> = {
  title: 'عنوان',
  name: 'نام',
  firstName: 'نام',
  lastName: 'نام خانوادگی',
  fullName: 'نام',
  description: 'توضیحات',
  body: 'متن',
  mobile: 'موبایل',
  phone: 'تلفن',
  email: 'ایمیل',
  status: 'وضعیت',
  stageId: 'مرحله',
  priority: 'اولویت',
  dueAt: 'موعد',
  amount: 'مبلغ',
  subject: 'موضوع',
  type: 'نوع',
  city: 'شهر',
  address: 'آدرس',
  notes: 'یادداشت',
  contactName: 'نام مخاطب',
};

const SECRET = /password|token|secret|otp|pin/i;

function textOf(value: unknown) {
  if (typeof value === 'string') return value.trim().replace(/\s+/g, ' ');
  if (typeof value === 'number' || typeof value === 'boolean') return String(value);
  return '';
}

function labelOf(source: unknown) {
  if (!source || typeof source !== 'object' || Array.isArray(source)) return '';
  const body = source as Record<string, unknown>;
  const person = [textOf(body.firstName), textOf(body.lastName)].filter(Boolean).join(' ');
  return (
    person ||
    textOf(body.title) ||
    textOf(body.name) ||
    textOf(body.subject) ||
    textOf(body.fullName)
  ).slice(0, 120);
}

function changesOf(source: unknown) {
  if (!source || typeof source !== 'object' || Array.isArray(source)) return '';
  const bits: string[] = [];
  for (const [key, value] of Object.entries(source as Record<string, unknown>)) {
    if (SECRET.test(key)) continue;
    const name = FIELD_LABELS[key];
    if (!name) continue;
    if (key.endsWith('Id')) {
      bits.push(name);
    } else {
      const text = textOf(value).slice(0, 40);
      if (!text) continue;
      bits.push(`${name}: ${text}`);
    }
    if (bits.length >= 4) break;
  }
  return bits.join('، ');
}

export function auditStory(
  method: string,
  requestBody: unknown,
  responseBody: unknown,
) {
  const label = labelOf(responseBody) || labelOf(requestBody);
  const detail = method === 'DELETE' ? '' : changesOf(requestBody);
  const summary = [label, detail].filter(Boolean).join(' — ').slice(0, 500);
  return {
    label,
    detail: detail.slice(0, 240),
    summary,
  };
}