import { getVersion } from "../lib/aria2.js";

const els = {
  endpoint: document.getElementById('rpc-endpoint'),
  secret: document.getElementById('rpc-secret'),
  btnSave: document.getElementById('btn-save'),
  btnReset: document.getElementById('btn-reset'),
  btnTest: document.getElementById('btn-test'),
  status: document.getElementById('status'),
};

async function restore() {
  const { aria2 } = await browser.storage.local.get('aria2');
  els.endpoint.value = aria2?.endpoint || 'http://localhost:6800/jsonrpc';
  els.secret.value = aria2?.secret || '';
}

async function save() {
  const endpoint = els.endpoint.value.trim();
  const secret = els.secret.value.trim();
  await browser.storage.local.set({ aria2: { endpoint, secret } });
  els.status.textContent = 'Saved.';
}

async function reset() {
  await browser.storage.local.remove('aria2');
  await restore();
  els.status.textContent = 'Reset to defaults.';
}

async function testConnection() {
  const endpoint = els.endpoint.value.trim();
  const secret = els.secret.value.trim();

  // Heads-up for Firefox HTTPS-Only Mode when using non-local HTTP
  try {
    const u = new URL(endpoint);
    const isHttp = u.protocol === 'http:';
    const isLoopback = ['localhost', '127.0.0.1', '[::1]'].includes(u.hostname);
    if (isHttp && !isLoopback) {
      els.status.textContent = 'Testing… (note: Firefox HTTPS-Only may upgrade this)';
    } else {
      els.status.textContent = 'Testing…';
    }
  } catch {
    els.status.textContent = 'Testing…';
  }
  try {
    const res = await getVersion({ endpoint, secret });
    const version = res?.result?.version || JSON.stringify(res?.result || res);
    els.status.textContent = `OK: aria2 version ${version}`;
  } catch (e) {
    // Provide a more actionable hint when HTTPS-Only likely interferes
    let hint = '';
    try {
      const u = new URL(endpoint);
      const isHttp = u.protocol === 'http:';
      const isLoopback = ['localhost', '127.0.0.1', '[::1]'].includes(u.hostname);
      if (isHttp && !isLoopback) {
        hint = ' — if Firefox HTTPS-Only Mode is on, use https, add a site exception, or disable HTTPS-Only temporarily.';
      }
    } catch {}
    els.status.textContent = `Error: ${e?.message || e}${hint}`;
  }
}

function wire() {
  els.btnSave.addEventListener('click', save);
  els.btnReset.addEventListener('click', reset);
  els.btnTest.addEventListener('click', testConnection);
}

document.addEventListener('DOMContentLoaded', async () => {
  wire();
  await restore();
});