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const PluginAuth = require('~/models/schema/pluginAuthSchema');
const { encrypt, decrypt } = require('~/server/utils/');
const { logger } = require('~/config');

/**
 * Asynchronously retrieves and decrypts the authentication value for a user's plugin, based on a specified authentication field.
 *
 * @param {string} userId - The unique identifier of the user for whom the plugin authentication value is to be retrieved.
 * @param {string} authField - The specific authentication field (e.g., 'API_KEY', 'URL') whose value is to be retrieved and decrypted.
 * @returns {Promise<string|null>} A promise that resolves to the decrypted authentication value if found, or `null` if no such authentication value exists for the given user and field.
 *
 * The function throws an error if it encounters any issue during the retrieval or decryption process, or if the authentication value does not exist.
 *
 * @example
 * // To get the decrypted value of the 'token' field for a user with userId '12345':
 * getUserPluginAuthValue('12345', 'token').then(value => {
 *   console.log(value);
 * }).catch(err => {
 *   console.error(err);
 * });
 *
 * @throws {Error} Throws an error if there's an issue during the retrieval or decryption process, or if the authentication value does not exist.
 * @async
 */
const getUserPluginAuthValue = async (userId, authField) => {
  try {
    const pluginAuth = await PluginAuth.findOne({ userId, authField }).lean();
    if (!pluginAuth) {
      throw new Error(`No plugin auth ${authField} found for user ${userId}`);
    }

    const decryptedValue = decrypt(pluginAuth.value);
    return decryptedValue;
  } catch (err) {
    logger.error('[getUserPluginAuthValue]', err);
    throw err;
  }
};

// const updateUserPluginAuth = async (userId, authField, pluginKey, value) => {
//   try {
//     const encryptedValue = encrypt(value);

//     const pluginAuth = await PluginAuth.findOneAndUpdate(
//       { userId, authField },
//       {
//         $set: {
//           value: encryptedValue,
//           pluginKey
//         }
//       },
//       {
//         new: true,
//         upsert: true
//       }
//     );

//     return pluginAuth;
//   } catch (err) {
//     logger.error('[getUserPluginAuthValue]', err);
//     return err;
//   }
// };

const updateUserPluginAuth = async (userId, authField, pluginKey, value) => {
  try {
    const encryptedValue = encrypt(value);
    const pluginAuth = await PluginAuth.findOne({ userId, authField }).lean();
    if (pluginAuth) {
      const pluginAuth = await PluginAuth.updateOne(
        { userId, authField },
        { $set: { value: encryptedValue } },
      );
      return pluginAuth;
    } else {
      const newPluginAuth = await new PluginAuth({
        userId,
        authField,
        value: encryptedValue,
        pluginKey,
      });
      await newPluginAuth.save();
      return newPluginAuth;
    }
  } catch (err) {
    logger.error('[updateUserPluginAuth]', err);
    return err;
  }
};

const deleteUserPluginAuth = async (userId, authField, all = false) => {
  if (all) {
    try {
      const response = await PluginAuth.deleteMany({ userId });
      return response;
    } catch (err) {
      logger.error('[deleteUserPluginAuth]', err);
      return err;
    }
  }

  try {
    return await PluginAuth.deleteOne({ userId, authField });
  } catch (err) {
    logger.error('[deleteUserPluginAuth]', err);
    return err;
  }
};

module.exports = {
  getUserPluginAuthValue,
  updateUserPluginAuth,
  deleteUserPluginAuth,
};