import { PICKUP_LEAD_TIME_MINUTES } from '@/domain/shared/constants';

export type FulfillmentMode = 'pickup' | 'delivery';

export type InquiryBranch = 'askim' | 'backaplan' | '';

export const DEFAULT_INQUIRY_BRANCH: InquiryBranch = 'backaplan';

export type InquiryPreferredDate = 'today' | 'tomorrow' | '';

export type InquiryScheduleValidation =
  | 'ok'
  | 'incomplete'
  | 'too_soon'
  | 'invalid_time';

export interface InquirySchedule {
  preferredDate: InquiryPreferredDate;
  preferredTime: string;
}

export interface PickupInquiryDetails extends InquirySchedule {
  name: string;
  email: string;
  branch: InquiryBranch;
}

export interface DeliveryInquiryDetails extends PickupInquiryDetails {
  address: string;
}

export function isInquiryBranchOnlineEnabled(branch: InquiryBranch): boolean {
  return branch === 'backaplan';
}

export function getMinInquiryTimeForToday(now: Date = new Date()): string {
  const min = new Date(now.getTime() + PICKUP_LEAD_TIME_MINUTES * 60 * 1000);
  return `${String(min.getHours()).padStart(2, '0')}:${String(min.getMinutes()).padStart(2, '0')}`;
}

export function validateInquirySchedule(
  schedule: InquirySchedule,
  now: Date = new Date(),
): InquiryScheduleValidation {
  const hasDate = schedule.preferredDate === 'today' || schedule.preferredDate === 'tomorrow';
  const hasTime = schedule.preferredTime.trim().length > 0;

  if (!hasDate && !hasTime) return 'ok';
  if (hasDate !== hasTime) return 'incomplete';

  const [hours, minutes] = schedule.preferredTime.split(':').map(Number);
  if (Number.isNaN(hours) || Number.isNaN(minutes)) return 'invalid_time';

  const scheduled = new Date(now);
  if (schedule.preferredDate === 'tomorrow') {
    scheduled.setDate(scheduled.getDate() + 1);
  }
  scheduled.setHours(hours, minutes, 0, 0);

  const minTime = new Date(now.getTime() + PICKUP_LEAD_TIME_MINUTES * 60 * 1000);
  if (scheduled.getTime() < minTime.getTime()) return 'too_soon';

  return 'ok';
}

export function hasInquirySchedule(schedule: InquirySchedule): boolean {
  return validateInquirySchedule(schedule) === 'ok' &&
    schedule.preferredDate !== '' &&
    schedule.preferredTime.trim() !== '';
}