// The e-mail programs' lines as Java's windows show them, in the person's
// language: the server's window appends each line its server tells it
// (EmailServer, SMTPMitarbeiter, POP3Mitarbeiter, SMTPClient — only those that
// are text: a failure the SMTP client throws does not show there); the
// program's window shows a failure's message in a dialog (Exception.getMessage).

import type { EmailServerLogEntry, MailFailure } from '@mdg-filius/core';
import type { Translate } from '../i18n/i18n.js';

/** EmailServer.LINE_SEPARATOR. */
const SEPARATOR = '----';

/** A line of the server's window; undefined for what Java's window does not show. */
export function emailServerLine(entry: EmailServerLogEntry, t: Translate): string | undefined {
  switch (entry.kind) {
    case 'connectionOpened':
    case 'connectionStarting':
      return SEPARATOR;
    case 'received':
      return `${entry.address}< ${entry.text}`;
    case 'sent':
      return `${entry.address}> ${entry.text}`;
    case 'sendFailed':
      return t('mail.sendFailed', { address: entry.address });
    case 'stored':
      return t('mail.stored', { name: entry.username });
    case 'switched':
      return t(entry.active ? 'emailServer.started' : 'emailServer.stopped');
    case 'smtpConnected':
      return t('mail.connected', { address: `${entry.address}:${entry.port}` });
    case 'smtpDisconnected':
      return t('mail.disconnected', { address: `${entry.address}:${entry.port}` });
    case 'mailSent':
      return t('mail.mailSent', { recipients: entry.recipients });
    case 'failed':
      return undefined;
  }
}

/** The message of a failure, as the program's window shows it. */
export function mailFailureText(failure: MailFailure, t: Translate): string {
  switch (failure.kind) {
    case 'answer':
      return failure.text;
    case 'connect':
      return t(`mail.failure.${failure.failure}`);
    case 'receiveFailed':
      return t('mail.failure.receiveFailed');
  }
}