// CrowdProof Observe - Chrome Background Service Worker
// Handles side panel toggle and context menus

// Create context menus on install
chrome.runtime.onInstalled.addListener(() => {
  chrome.contextMenus.create({
    id: "send-url-to-crowdproof",
    title: "Send URL to CrowdProof",
    contexts: ["link"]
  });

  chrome.contextMenus.create({
    id: "send-image-to-crowdproof",
    title: "Send Image to CrowdProof",
    contexts: ["image"]
  });
});

// Open side panel when action button is clicked
chrome.action.onClicked.addListener((tab) => {
  chrome.sidePanel.open({ windowId: tab.windowId });
});

// Handle context menu click
chrome.contextMenus.onClicked.addListener((info, tab) => {
  // Open side panel
  chrome.sidePanel.open({ windowId: tab.windowId });

  if (info.menuItemId === "send-url-to-crowdproof") {
    chrome.storage.local.set({ pendingUrl: info.linkUrl });
  } else if (info.menuItemId === "send-image-to-crowdproof") {
    // Store the image source URL - sidepanel will fetch it
    chrome.storage.local.set({
      pendingImage: {
        sourceUrl: info.srcUrl
      }
    });
  }
});

// API helper
const API = {
  async getServerUrl() {
    const result = await chrome.storage.local.get('serverUrl');
    return result.serverUrl || null;
  },

  async request(endpoint, options = {}) {
    const serverUrl = await this.getServerUrl();
    if (!serverUrl) {
      throw new Error('Server URL not configured. Please set it in extension options.');
    }

    const url = `${serverUrl}${endpoint}`;
    const fetchOptions = {
      credentials: 'include',
      ...options
    };

    const response = await fetch(url, fetchOptions);
    return response;
  },

  async login(username, password) {
    const formData = new FormData();
    formData.append('username', username);
    formData.append('password', password);

    const response = await this.request('/login', {
      method: 'POST',
      body: formData
    });

    return {
      success: response.ok && !response.url.includes('/login'),
      response
    };
  },

  async logout() {
    const response = await this.request('/logout', {
      method: 'GET'
    });
    return response.ok;
  },

  async checkAuth() {
    const response = await this.request('/profile', {
      method: 'GET'
    });
    return !response.url.includes('/login');
  },

  async createObservation(type, formData) {
    const response = await this.request(`/create_observation/${type}`, {
      method: 'POST',
      body: formData
    });

    return {
      success: response.ok,
      response
    };
  }
};

// Handle messages from sidepanel
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
  (async () => {
    try {
      switch (message.action) {
        case 'getServerUrl':
          sendResponse({ serverUrl: await API.getServerUrl() });
          break;

        case 'checkAuth':
          const isAuthenticated = await API.checkAuth();
          sendResponse({ authenticated: isAuthenticated });
          break;

        case 'login':
          const loginResult = await API.login(message.username, message.password);
          sendResponse({ success: loginResult.success });
          break;

        case 'logout':
          const logoutSuccess = await API.logout();
          sendResponse({ success: logoutSuccess });
          break;

        case 'createObservation':
          const obsResult = await API.createObservation(message.type, message.formData);
          sendResponse({ success: obsResult.success });
          break;

        default:
          sendResponse({ error: 'Unknown action' });
      }
    } catch (error) {
      sendResponse({ error: error.message });
    }
  })();
  return true; // Keep message channel open for async response
});