import {
  GOOGLE_CLIENT_ID,
  GOOGLE_CLIENT_SECRET,
  GOOGLE_REFRESH_TOKEN,
  ZOOM_CLIENT_ID,
  ZOOM_CLIENT_SECRET,
  ZOOM_REFRESH_TOKEN,
} from "../constants";

export async function generateGoogleCalendarAccessToken() {
  const keys = {
    client_id: GOOGLE_CLIENT_ID,
    client_secret: GOOGLE_CLIENT_SECRET,
    redirect_uris: [
      "http://localhost:3000/api/integrations/googlecalendar/callback",
      "http://localhost:3000/api/auth/callback/google",
    ],
  };
  const clientId = keys.client_id;
  const clientSecret = keys.client_secret;
  const refresh_token = GOOGLE_REFRESH_TOKEN;

  const url = "https://oauth2.googleapis.com/token";
  const data = {
    client_id: clientId,
    client_secret: clientSecret,
    refresh_token: refresh_token,
    grant_type: "refresh_token",
  };

  try {
    const response = await fetch(url, {
      method: "POST",
      headers: {
        "Content-Type": "application/x-www-form-urlencoded",
      },
      body: new URLSearchParams(data),
    });

    const json = await response.json();
    if (json.access_token) {
      console.log("Access Token:", json.access_token);
      return json.access_token;
    } else {
      console.error("Failed to retrieve access token:", json);
      return null;
    }
  } catch (error) {
    console.error("Error fetching access token:", error);
    return null;
  }
}

export async function generateZoomAccessToken() {
  const client_id = ZOOM_CLIENT_ID; // Replace with your client ID
  const client_secret = ZOOM_CLIENT_SECRET; // Replace with your client secret
  const refresh_token = ZOOM_REFRESH_TOKEN; // Replace with your refresh token

  const url = "https://zoom.us/oauth/token";
  const auth = Buffer.from(`${client_id}:${client_secret}`).toString("base64");

  const params = new URLSearchParams();
  params.append("grant_type", "refresh_token");
  params.append("refresh_token", refresh_token);

  try {
    const response = await fetch(url, {
      method: "POST",
      headers: {
        Authorization: `Basic ${auth}`,
        "Content-Type": "application/x-www-form-urlencoded",
      },
      body: params,
    });

    const json = await response.json();
    if (json.access_token) {
      console.log("New Access Token:", json.access_token);
      console.log("New Refresh Token:", json.refresh_token); // Save this refresh token securely
      return json.access_token; // You might also want to return the new refresh token if applicable
    } else {
      console.error("Failed to refresh access token:", json);
      return null;
    }
  } catch (error) {
    console.error("Error refreshing access token:", error);
    return null;
  }
}