import type { Recipient } from '@prisma/client';

import { NEXT_PUBLIC_WEBAPP_URL } from '../constants/app';

export const formatDirectTemplatePath = (token: string) => {
  return `${NEXT_PUBLIC_WEBAPP_URL()}/d/${token}`;
};

/**
 * Generate a placeholder recipient using an index number.
 *
 * May collide with existing recipients.
 *
 * Note:
 * - Update TEMPLATE_RECIPIENT_EMAIL_PLACEHOLDER_REGEX if this is ever changed.
 * - Update TEMPLATE_RECIPIENT_NAME_PLACEHOLDER_REGEX if this is ever changed.
 *
 */
export const generateRecipientPlaceholder = (index: number) => {
  return {
    name: `Recipient ${index}`,
    email: `recipient.${index}@documenso.com`,
  };
};

/**
 * Generates a placeholder that does not collide with any existing recipients.
 *
 * @param currentRecipients The current recipients that exist for a template.
 */
export const generateAvaliableRecipientPlaceholder = (currentRecipients: Recipient[]) => {
  const recipientEmails = currentRecipients.map((recipient) => recipient.email);
  let recipientPlaceholder = generateRecipientPlaceholder(0);

  for (let i = 1; i <= currentRecipients.length + 1; i++) {
    recipientPlaceholder = generateRecipientPlaceholder(i);

    if (!recipientEmails.includes(recipientPlaceholder.email)) {
      return recipientPlaceholder;
    }
  }

  return recipientPlaceholder;
};