// Popup JavaScript para Manga Mass Downloader

document.addEventListener('DOMContentLoaded', async () => {
  const selectedCountElement = document.getElementById('selectedCount');
  const downloadSelectedBtn = document.getElementById('downloadSelected');
  const downloadAllBtn = document.getElementById('downloadAll');
  const clearSelectionBtn = document.getElementById('clearSelection');
  const progressDiv = document.getElementById('progress');
  const progressFill = document.getElementById('progressFill');
  const statusElement = document.getElementById('status');

  let selectedMangas = [];
  const [tab] = await chrome.tabs.query({ active: true, currentWindow: true });

  // Obtener manga seleccionados del content script
  async function getSelectedMangas() {
    if (!tab.url.includes('e-hentai.org')) {
      selectedCountElement.textContent = '0';
      return [];
    }

    return new Promise((resolve) => {
      chrome.tabs.sendMessage(tab.id, { action: 'getSelectedMangas' }, (response) => {
        if (chrome.runtime.lastError) {
          console.error('Error:', chrome.runtime.lastError);
          selectedCountElement.textContent = '0';
          resolve([]);
          return;
        }

        selectedMangas = response ? response.mangas : [];
        selectedCountElement.textContent = selectedMangas.length;
        resolve(selectedMangas);
      });
    });
  }

  // Actualizar contador
  async function updateSelectedCount() {
    await getSelectedMangas();
  }

  // Mostrar progreso
  function showProgress(current, total, status) {
    progressDiv.style.display = 'block';
    const percentage = total > 0 ? Math.round((current / total) * 100) : 0;
    progressFill.style.width = percentage + '%';
    statusElement.textContent = status || `${current}/${total}`;
  }

  // Ocultar progreso
  function hideProgress() {
    progressDiv.style.display = 'none';
    progressFill.style.width = '0%';
    statusElement.textContent = '';
  }

  // Descargar manga seleccionados
  downloadSelectedBtn.addEventListener('click', async () => {
    await getSelectedMangas();

    if (selectedMangas.length === 0) {
      alert('No hay manga seleccionados. Ve a la página y selecciona algunos manga.');
      return;
    }

    downloadSelectedBtn.disabled = true;
    downloadAllBtn.disabled = true;
    clearSelectionBtn.disabled = true;

    showProgress(0, selectedMangas.length, 'Iniciando descargas...');

    try {
      // Descargar cada manga secuencialmente
      for (let i = 0; i < selectedMangas.length; i++) {
        const manga = selectedMangas[i];
        showProgress(i + 1, selectedMangas.length, `Descargando: ${manga.title.substring(0, 30)}...`);

        try {
          // Obtener URLs de imágenes
          const imageUrls = await getImageUrls(manga);

          // Enviar al background para descarga
          const response = await chrome.runtime.sendMessage({
            action: 'downloadManga',
            metadata: manga,
            imageUrls: imageUrls
          });

          if (!response.success) {
            console.error(`Error descargando ${manga.title}:`, response.error);
          }
        } catch (error) {
          console.error(`Error en manga ${manga.title}:`, error.message);
        }
      }

      showProgress(selectedMangas.length, selectedMangas.length, '¡Completado!');
      statusElement.className = 'status success';

      // Limpiar selección después de 3 segundos
      setTimeout(() => {
        chrome.tabs.sendMessage(tab.id, { action: 'clearSelection' }, async () => {
          await updateSelectedCount();
        });
      }, 3000);

    } catch (error) {
      console.error('Error general:', error);
      statusElement.textContent = 'Error: ' + error.message;
      statusElement.className = 'status error';
    } finally {
      downloadSelectedBtn.disabled = false;
      downloadAllBtn.disabled = false;
      clearSelectionBtn.disabled = false;
    }
  });

  // Descargar TODOS los manga de la página
  downloadAllBtn.addEventListener('click', async () => {
    if (!tab.url.includes('e-hentai.org')) {
      alert('Esta extensión solo funciona en e-hentai.org');
      return;
    }

    if (!confirm('¿Descargar TODOS los manga de esta página?')) {
      return;
    }

    downloadSelectedBtn.disabled = true;
    downloadAllBtn.disabled = true;
    clearSelectionBtn.disabled = true;

    showProgress(0, 100, 'Obteniendo lista de manga...');

    try {
      // Pedir al content script que extraiga todos los manga
      const result = await new Promise((resolve) => {
        chrome.tabs.sendMessage(tab.id, { action: 'extractAllMangas' }, (response) => {
          resolve(response || { mangas: [] });
        });
      });

      const allMangas = result.mangas || [];
      showProgress(0, allMangas.length, `Encontrados ${allMangas.length} manga`);

      // Descargar cada manga
      for (let i = 0; i < allMangas.length; i++) {
        const manga = allMangas[i];
        showProgress(i + 1, allMangas.length, `Descargando: ${manga.title.substring(0, 30)}...`);

        try {
          const imageUrls = await getImageUrls(manga);

          const response = await chrome.runtime.sendMessage({
            action: 'downloadManga',
            metadata: manga,
            imageUrls: imageUrls
          });

          if (!response.success) {
            console.error(`Error descargando ${manga.title}:`, response.error);
          }
        } catch (error) {
          console.error(`Error en manga ${manga.title}:`, error.message);
        }
      }

      showProgress(allMangas.length, allMangas.length, '¡Completado!');
      statusElement.className = 'status success';

    } catch (error) {
      console.error('Error general:', error);
      statusElement.textContent = 'Error: ' + error.message;
      statusElement.className = 'status error';
    } finally {
      downloadSelectedBtn.disabled = false;
      downloadAllBtn.disabled = false;
      clearSelectionBtn.disabled = false;
    }
  });

  // Limpiar selección
  clearSelectionBtn.addEventListener('click', async () => {
    chrome.tabs.sendMessage(tab.id, { action: 'clearSelection' }, async () => {
      await updateSelectedCount();
      hideProgress();
    });
  });

  // Obtener URLs para un manga específico
  async function getImageUrls(manga) {
    return new Promise((resolve, reject) => {
      chrome.tabs.sendMessage(
        tab.id,
        { action: 'getImageUrls', manga: manga },
        (response) => {
          if (chrome.runtime.lastError) {
            reject(chrome.runtime.lastError);
            return;
          }
          if (response.error) {
            reject(new Error(response.error));
            return;
          }
          resolve(response.imageUrls);
        }
      );
    });
  }

  // Escuchar mensajes del background
  chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
    if (request.action === 'updateSelectedCount') {
      selectedCountElement.textContent = request.count;
    }
  });

  // Inicializar
  updateSelectedCount();

  // Actualizar contador cada 2 segundos
  setInterval(updateSelectedCount, 2000);
});