import { API_KEY } from '../constants/config';
import { SIGNAL_CLI_DATA } from '../constants/paths';
import { ROUTES, TEMPLATES } from '../constants/server';
import {
  finishLink,
  generateLinkQR,
  hasLinkUri,
  hasValidAccount,
  initSignal,
  unlinkDevice,
} from '../modules/signal';

export const handleLink = async () => {
  const linked = await hasValidAccount();
  const template = linked ? TEMPLATES.LINKED : TEMPLATES.LINK;
  let html = await Bun.file(template).text();

  if (linked && API_KEY) {
    const passwordField =
      '<input type="password" name="password" placeholder="Enter API_KEY" required style="padding: 8px; margin-right: 10px; border: 1px solid #ccc; border-radius: 4px;" />';
    html = html.replace('{{PASSWORD_FIELD}}', passwordField);
  } else if (linked) {
    html = html.replace('{{PASSWORD_FIELD}}', '');
  }

  return new Response(html, {
    headers: { 'content-type': 'text/html' },
  });
};

export const handleLinkQR = async (restartDaemon: () => Promise<void>) => {
  const linked = await hasValidAccount();
  if (!linked && (await Bun.file(SIGNAL_CLI_DATA).exists())) {
    await unlinkDevice();
    await restartDaemon();
  }

  const qrDataUrl = await generateLinkQR();

  return new Response(qrDataUrl, {
    headers: { 'content-type': 'text/plain' },
  });
};

export const handleLinkStatus = async () => {
  let linked = await hasValidAccount();

  if (!linked && hasLinkUri()) {
    try {
      await finishLink();
      await initSignal({});
      linked = true;
    } catch {}
  }

  return Response.json({ linked });
};

export const handleUnlink = async (killAndRestart: () => Promise<void>) => {
  await unlinkDevice();
  await killAndRestart();

  return new Response('', {
    status: 303,
    headers: { Location: ROUTES.LINK },
  });
};