/* ── Pure helpers extracted from QuoteGenerator.tsx ── */

/** Recursively strip null values from service objects (Zod v4 optional() rejects null). */
export function sanitizeServices(svcs: any[]): any[] {
  return svcs.map((s) => {
    const clean: Record<string, any> = {};
    for (const [k, v] of Object.entries(s)) {
      if (v === null) continue;
      clean[k] = v;
    }
    return clean;
  });
}

export function normalizeCustomerInfo(raw: any) {
  if (!raw || typeof raw !== 'object') return null;
  const parsedNestedCustomerInfo = (() => {
    const nested = raw.customerInfo;
    if (!nested) return null;
    if (typeof nested === 'string') {
      try { return JSON.parse(nested); } catch { return null; }
    }
    return typeof nested === 'object' ? nested : null;
  })();
  const pick = (...values: any[]) => {
    for (const value of values) {
      if (typeof value === 'string' && value.trim()) return value;
      if (typeof value === 'number' && Number.isFinite(value)) return String(value);
    }
    return '';
  };
  return {
    name: pick(raw.name, parsedNestedCustomerInfo?.name, raw.customerName, parsedNestedCustomerInfo?.customerName, raw.customer, parsedNestedCustomerInfo?.customer),
    phone: pick(raw.phone, parsedNestedCustomerInfo?.phone, raw.customerPhone, parsedNestedCustomerInfo?.customerPhone, raw.customer_phone, parsedNestedCustomerInfo?.customer_phone),
    vehicleInfo: pick(raw.vehicleInfo, parsedNestedCustomerInfo?.vehicleInfo, raw.vehicle, parsedNestedCustomerInfo?.vehicle, raw.vehicle_info, parsedNestedCustomerInfo?.vehicle_info),
    vin: pick(raw.vin, parsedNestedCustomerInfo?.vin, raw.VIN, parsedNestedCustomerInfo?.VIN),
    mileage: pick(raw.mileage, parsedNestedCustomerInfo?.mileage, raw.miles, parsedNestedCustomerInfo?.miles),
    roNumber: pick(raw.roNumber, parsedNestedCustomerInfo?.roNumber, raw.repairOrderNumber, parsedNestedCustomerInfo?.repairOrderNumber, raw.RO, parsedNestedCustomerInfo?.RO, raw.ro, parsedNestedCustomerInfo?.ro, raw.ro_number, parsedNestedCustomerInfo?.ro_number),
    repairOrderId: pick(raw.repairOrderId, parsedNestedCustomerInfo?.repairOrderId),
    serviceAdvisor: pick(raw.serviceAdvisor, parsedNestedCustomerInfo?.serviceAdvisor, raw.advisorName, parsedNestedCustomerInfo?.advisorName, raw.serviceAdvisorName, parsedNestedCustomerInfo?.serviceAdvisorName, raw.advisor, parsedNestedCustomerInfo?.advisor),
  };
}

export function formatQuoteCurrency(amount: number): string {
  return new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(amount);
}

export function formatQuoteDate(iso: string | undefined | null): string {
  if (!iso) return '—';
  try {
    return new Intl.DateTimeFormat('en-US', { month: 'short', day: 'numeric', year: 'numeric' }).format(new Date(iso));
  } catch { return '—'; }
}

export function recentQuoteDate(quote: { createdAt?: string; lastUpdated?: string }): string {
  return quote.createdAt || quote.lastUpdated || '';
}

export function recentQuoteTimestamp(quote: { createdAt?: string; lastUpdated?: string }): number {
  const value = recentQuoteDate(quote);
  const parsed = value ? new Date(value).getTime() : NaN;
  return Number.isNaN(parsed) ? 0 : parsed;
}