// The lines FILIUS' programs write into their windows, as Java's German
// message bundle says them: for comparing the core's structured lines with
// what the Java oracle recorded (echoJava.test.ts, webJava.test.ts).

import type { EchoServerLogEntry, EmailClientLogEntry, EmailServerLogEntry, PageLanguage, SendFailure, SimpleClientLogEntry, WebBrowserLogEntry } from '../src/index.js';

/** Java's client and server look every 100 ms whether they are connected, or switched off; the core at once. */
export const POLL_MILLISECONDS = 100;

/** Lines Java writes after one of its 100 ms looks. */
const POLLED = new Set(['Verbindung hergestellt', 'Server-Socket geschlossen']);
export const isPolled = (text: string) => POLLED.has(text) || /^Verbindung zu .* hergestellt$/.test(text);

/** sw_tcpsocket_msg6, msg7, msg8. */
export const SEND_FAILURES: Record<SendFailure, string> = {
  notConnected: 'Verbindung nicht aufgebaut!',
  connectionLost: 'Verbindung wurde unterbrochen',
  timedOut: 'Zeitüberschreitung während des Versands einer Nachricht',
};

/** A server's line as Java's window shows it (German message bundle). */
export function serverText(entry: EchoServerLogEntry): string {
  switch (entry.kind) {
    case 'acceptingStarted':
      return 'Annahme von Verbindungsanfragen gestartet';
    case 'acceptingStopped':
      return 'Annahme von Verbindungsanfragen beendet';
    case 'serverSocketClosed':
      return 'Server-Socket geschlossen';
    case 'serverSocketFailed':
      return 'Server-Socket konnte nicht geöffnet werden.';
    case 'connectionAccepted':
      return `Verbindung zu ${entry.address}:${entry.port} hergestellt`;
    case 'received':
      return `>>${entry.text}`;
    case 'sent':
      return `<<${entry.text}`;
    case 'sendFailed':
      return SEND_FAILURES[entry.failure];
    case 'connectionClosed':
      return `Socket zu ${entry.address}:${entry.port} geschlossen`;
  }
}

export const CONNECT_FAILURES = {
  unresolved: 'Ziel konnte nicht bestimmt werden!',
  timedOut: 'Zeitüberschreitung beim Verbindungsaufbau',
  failed: 'Aktives Öffnen des Sockets fehlgeschlagen',
};

/** A client's line as Java's window shows it. */
export function clientText(entry: SimpleClientLogEntry): string {
  switch (entry.kind) {
    case 'connected':
      return 'Verbindung hergestellt';
    case 'connectFailed':
      return `Fehler beim Verbindungsaufbau\n${CONNECT_FAILURES[entry.failure]}`;
    case 'disconnected':
      return 'Verbindung getrennt';
    case 'notConnected':
      return 'Fehler beim Verbindungsaufbau';
    case 'sent':
      return `<<${entry.text}`;
    case 'received':
      return `>>${entry.text}`;
    case 'sendFailed':
      return SEND_FAILURES[entry.failure];
    case 'connectionClosed':
      return `Socket zu ${entry.address}:${entry.port} getrennt`;
    case 'receiveFailed':
      return 'Keine Verbindung hergestellt!';
  }
}

const IMAGE_TYPES = new Set(['png', 'gif', 'jpg', 'bmp']);

/** A browser's line as its window took it: a page (with its text only for 200), or "update" for an image. */
export function browserText(entry: WebBrowserLogEntry): string | undefined {
  switch (entry.kind) {
    case 'page':
      return `page ${entry.statusCode} ${entry.contentType ?? 'null'}${entry.statusCode === 200 ? `\n${entry.body ?? 'null'}` : ''}`;
    case 'unreachable':
      return 'page 0 null';
    case 'image': {
      // WebBrowser.retrieveImages tells the window of an image that came, or of a status other than 200.
      const isImage = entry.contentType !== undefined && IMAGE_TYPES.has(entry.contentType.toLowerCase().replace('image/', ''));
      return entry.statusCode !== 200 || isImage ? 'update' : undefined;
    }
  }
}

/** The e-mail server's line as Java's window shows it (sw_smtpmitarbeiter_msg12 to msg14 in both languages). */
export function emailServerText(entry: EmailServerLogEntry, language: PageLanguage = 'de'): string {
  switch (entry.kind) {
    case 'connectionOpened':
      return '----';
    case 'received':
      return `${entry.address}< ${entry.text}`;
    case 'sent':
      return `${entry.address}> ${entry.text}`;
    case 'sendFailed':
      return language === 'de' ? `Fehler beim Senden an ${entry.address}` : `Error while sending ${entry.address}`;
    case 'stored':
      return language === 'de' ? `E-Mail für ${entry.username} im Postfach gespeichert.` : `E-mail for ${entry.username} saved in mailbox.`;
    case 'switched':
      // `emailserver_msg2`, `emailserver_msg3`: the window's own line.
      return language === 'de'
        ? `POP3- und SMTP-Server wurden ${entry.active ? 'gestartet' : 'angehalten'}.`
        : `POP3 and SMTP servers are ${entry.active ? 'activated' : 'stopped'}.`;
    default:
      return emailClientText(entry);
  }
}

/**
 * What the SMTP and POP3 clients tell the program they work for, as Java's
 * observers get it (sw_smtpclient_msg1 to msg4; a failure as Java's
 * exception prints itself; the window shows its message).
 */
export function emailClientText(entry: EmailClientLogEntry): string {
  switch (entry.kind) {
    case 'connectionStarting':
      return '----';
    case 'smtpConnected':
      return `Verbindung zu ${entry.address}:${entry.port} hergestellt`;
    case 'mailSent':
      return `Mail versendet an ${entry.recipients}`;
    case 'smtpDisconnected':
      return `Verbindung zu ${entry.address}:${entry.port} getrennt`;
    case 'failed':
      switch (entry.failure.kind) {
        case 'answer':
          return `java.lang.Exception: ${entry.failure.text}`;
        case 'connect':
          return entry.failure.failure === 'timedOut' ? `filius.exception.TimeOutException: ${CONNECT_FAILURES.timedOut}` : `filius.exception.VerbindungsException: ${CONNECT_FAILURES[entry.failure.failure]}`;
        case 'receiveFailed':
          return 'filius.exception.VerbindungsException: Verbindung nicht aufgebaut!';
      }
  }
}