/**
 * Client-side utility functions for member display.
 */

export function computeAge(dateOfBirth: string | null | undefined): number | null {
  if (!dateOfBirth) return null;
  const birth = new Date(dateOfBirth);
  const today = new Date();
  let age = today.getFullYear() - birth.getFullYear();
  const m = today.getMonth() - birth.getMonth();
  if (m < 0 || (m === 0 && today.getDate() < birth.getDate())) age--;
  return age;
}

export function computeMembershipYears(entryDate: string | null | undefined): number {
  if (!entryDate) return 0;
  const entry = new Date(entryDate);
  const today = new Date();
  let years = today.getFullYear() - entry.getFullYear();
  const m = today.getMonth() - entry.getMonth();
  if (m < 0 || (m === 0 && today.getDate() < entry.getDate())) years--;
  return Math.max(0, years);
}

export function formatSalutation(salutation: string | null | undefined, firstName: string, lastName: string): string {
  if (salutation) return `${salutation} ${firstName} ${lastName}`;
  return `${firstName} ${lastName}`;
}

export function formatAddress(member: Record<string, unknown>): string {
  const parts: string[] = [];
  if (member.street) {
    let line = String(member.street);
    if (member.house_number) line += ` ${member.house_number}`;
    parts.push(line);
  }
  if (member.street2) parts.push(String(member.street2));
  if (member.postal_code || member.city) {
    parts.push(`${member.postal_code ?? ''} ${member.city ?? ''}`.trim());
  }
  return parts.join(', ');
}

export function formatIban(iban: string | null | undefined): string {
  if (!iban) return '—';
  const cleaned = iban.replace(/\s/g, '');
  return cleaned.replace(/(.{4})/g, '$1 ').trim();
}

export function getMemberStatusColor(status: string): 'default' | 'secondary' | 'destructive' | 'outline' {
  switch (status) {
    case 'active': return 'default';
    case 'inactive': return 'secondary';
    case 'pending': return 'outline';
    case 'resigned':
    case 'excluded':
    case 'deceased': return 'destructive';
    default: return 'secondary';
  }
}

export const STATUS_LABELS: Record<string, string> = {
  active: 'Aktiv',
  inactive: 'Inaktiv',
  pending: 'Ausstehend',
  resigned: 'Ausgetreten',
  excluded: 'Ausgeschlossen',
  deceased: 'Verstorben',
};

export const APPLICATION_STATUS_VARIANT: Record<string, 'default' | 'secondary' | 'destructive' | 'outline'> = {
  submitted: 'outline',
  review: 'secondary',
  approved: 'default',
  rejected: 'destructive',
};

export const APPLICATION_STATUS_LABEL: Record<string, string> = {
  submitted: 'Eingereicht',
  review: 'In Prüfung',
  approved: 'Genehmigt',
  rejected: 'Abgelehnt',
};