const InviteToken = require("../../../models/InviteToken");
const crypto = require("crypto");
const { errorMessages } = require("../../../utils/messages");
const SERVICE_NAME = "inviteModule";

/**
 * Request an invite token for a user.
 *
 * This function deletes any existing invite tokens for the user's email,
 * generates a new token, saves it, and then returns the new token.
 *
 * @param {Object} userData - The user data.
 * @param {string} userData.email - The user's email.
 * @param {mongoose.Schema.Types.ObjectId} userData.teamId - The ID of the team.
 * @param {Array} userData.role - The user's role(s).
 * @param {Date} [userData.expiry=Date.now] - The expiry date of the token. Defaults to the current date and time.
 * @returns {Promise<InviteToken>} The invite token.
 * @throws {Error} If there is an error.
 */
const requestInviteToken = async (userData) => {
  try {
    await InviteToken.deleteMany({ email: userData.email });
    userData.token = crypto.randomBytes(32).toString("hex");
    let inviteToken = new InviteToken(userData);
    await inviteToken.save();
    return inviteToken;
  } catch (error) {
    error.service = SERVICE_NAME;
    error.method = "requestInviteToken";
    throw error;
  }
};

/**
 * Retrieves an invite token
 *
 * This function searches for an invite token in the database and deletes it.
 * If the invite token is not found, it throws an error.
 *
 * @param {string} token - The invite token to search for.
 * @returns {Promise<InviteToken>} The invite token data.
 * @throws {Error} If the invite token is not found or there is another error.
 */
const getInviteToken = async (token) => {
  try {
    const invite = await InviteToken.findOne({
      token,
    });
    if (invite === null) {
      throw new Error(errorMessages.AUTH_INVITE_NOT_FOUND);
    }
    return invite;
  } catch (error) {
    error.service = SERVICE_NAME;
    error.method = "getInviteToken";
    throw error;
  }
};

/**
 * Retrieves and deletes an invite token
 *
 * This function searches for an invite token in the database and deletes it.
 * If the invite token is not found, it throws an error.
 *
 * @param {string} token - The invite token to search for.
 * @returns {Promise<InviteToken>} The invite token data.
 * @throws {Error} If the invite token is not found or there is another error.
 */
const getInviteTokenAndDelete = async (token) => {
  try {
    const invite = await InviteToken.findOneAndDelete({
      token,
    });
    if (invite === null) {
      throw new Error(errorMessages.AUTH_INVITE_NOT_FOUND);
    }
    return invite;
  } catch (error) {
    error.service = SERVICE_NAME;
    error.method = "getInviteToken";
    throw error;
  }
};

module.exports = {
  requestInviteToken,
  getInviteToken,
  getInviteTokenAndDelete,
};