import { applyFilters } from "../lib/filters.js";

const els = {
  fType: document.getElementById('f-type'),
  fTypeRe: document.getElementById('f-type-re'),
  fName: document.getElementById('f-name'),
  fNameRe: document.getElementById('f-name-re'),
  fSizeMin: document.getElementById('f-size-min'),
  fSizeMax: document.getElementById('f-size-max'),
  fDateFrom: document.getElementById('f-date-from'),
  fDateTo: document.getElementById('f-date-to'),
  fCase: document.getElementById('f-case'),
  btnRefresh: document.getElementById('btn-refresh'),
  btnCopy: document.getElementById('btn-copy'),
  btnSend: document.getElementById('btn-send'),
  rpcEndpoint: document.getElementById('rpc-endpoint'),
  rpcSecret: document.getElementById('rpc-secret'),
  count: document.getElementById('count'),
  status: document.getElementById('status'),
  openOptions: document.getElementById('open-options'),
  preview: document.getElementById('preview'),
};

let allItems = [];

function getFilters() {
  return {
    type: els.fType.value,
    name: els.fName.value,
    typeRegex: els.fTypeRe.checked,
    nameRegex: els.fNameRe.checked,
    sizeMin: els.fSizeMin.value,
    sizeMax: els.fSizeMax.value,
    dateFrom: els.fDateFrom.value,
    dateTo: els.fDateTo.value,
    caseSensitive: els.fCase.checked,
  };
}

async function getActiveTabId() {
  const tabs = await browser.tabs.query({ active: true, currentWindow: true });
  return tabs[0]?.id;
}

async function refresh() {
  els.status.textContent = '';
  try {
    const tabId = await getActiveTabId();
    if (!tabId) throw new Error('No active tab');
    const items = await browser.tabs.sendMessage(tabId, { type: 'collectLinks' });
    allItems = items || [];
    updateCount();
  } catch (e) {
    els.status.textContent = String(e?.message || e);
  }
}

function filtered() {
  return applyFilters(allItems, getFilters());
}

function updateCount() {
  els.count.textContent = String(filtered().length);
  renderPreview();
}

async function copyLinks() {
  const urls = filtered().map(i => i.url).join('\n');
  await navigator.clipboard.writeText(urls);
  els.status.textContent = `Copied ${filtered().length} link(s) to clipboard.`;
}

async function sendToAria2() {
  const endpoint = els.rpcEndpoint.value.trim();
  const secret = els.rpcSecret.value.trim();
  const uris = filtered().map(i => i.url);
  if (!endpoint) { els.status.textContent = 'Please set aria2 endpoint.'; return; }
  if (uris.length === 0) { els.status.textContent = 'No links to send.'; return; }

  // Persist settings
  await browser.storage.local.set({ aria2: { endpoint, secret } });
  els.status.textContent = 'Sending to aria2…';

  const res = await browser.runtime.sendMessage({
    type: 'aria2.send',
    payload: { endpoint, secret, uris }
  });
  if (res?.ok) {
    els.status.textContent = `Sent ${uris.length} link(s) to aria2.`;
  } else {
    els.status.textContent = `Error: ${res?.error || 'unknown'}`;
  }
}

async function restoreSettings() {
  const { aria2 } = await browser.storage.local.get('aria2');
  if (aria2) {
    if (aria2.endpoint) els.rpcEndpoint.value = aria2.endpoint;
    if (aria2.secret) els.rpcSecret.value = aria2.secret;
  } else {
    els.rpcEndpoint.value = 'http://localhost:6800/jsonrpc';
  }
}

function wire() {
  els.btnRefresh.addEventListener('click', refresh);
  els.btnCopy.addEventListener('click', copyLinks);
  els.btnSend.addEventListener('click', sendToAria2);
  els.openOptions.addEventListener('click', (e) => { e.preventDefault(); browser.runtime.openOptionsPage(); });
  [
    els.fType, els.fTypeRe, els.fName, els.fNameRe, els.fSizeMin, els.fSizeMax,
    els.fDateFrom, els.fDateTo, els.fCase
  ].forEach(el => el.addEventListener('input', updateCount));
}

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

function renderPreview() {
  if (!els.preview) return;
  const items = filtered();
  const max = 50;
  els.preview.innerHTML = '';
  for (const it of items.slice(0, max)) {
    const li = document.createElement('li');
    li.textContent = it.name || it.url;
    els.preview.appendChild(li);
  }
  if (items.length > max) {
    const li = document.createElement('li');
    li.textContent = `…and ${items.length - max} more`;
    els.preview.appendChild(li);
  }
}