// ts-check
const SubscriptionGroupHandler = require('./SubscriptionGroupHandler')
const OError = require('@overleaf/o-error')
const logger = require('@overleaf/logger')
const SubscriptionLocator = require('./SubscriptionLocator')
const SessionManager = require('../Authentication/SessionManager')
const UserAuditLogHandler = require('../User/UserAuditLogHandler')
const { expressify } = require('@overleaf/promise-utils')
const Modules = require('../../infrastructure/Modules')

/**
 * @typedef {import("../../../../types/subscription/dashboard/subscription").Subscription} Subscription
 */

/**
 * @param {import("express").Request} req
 * @param {import("express").Response} res
 * @returns {Promise<void>}
 */
async function removeUserFromGroup(req, res) {
  const subscription = req.entity
  const userToRemoveId = req.params.user_id
  const loggedInUserId = SessionManager.getLoggedInUserId(req.session)
  const subscriptionId = subscription._id
  logger.debug(
    { subscriptionId, userToRemoveId },
    'removing user from group subscription'
  )

  await _removeUserFromGroup(req, res, {
    userToRemoveId,
    loggedInUserId,
    subscription,
  })
}

/**
 * @param {import("express").Request} req
 * @param {import("express").Response} res
 * @returns {Promise<void>}
 */
async function removeSelfFromGroup(req, res) {
  const userToRemoveId = SessionManager.getLoggedInUserId(req.session)
  const subscription = await SubscriptionLocator.promises.getSubscription(
    req.query.subscriptionId
  )

  await _removeUserFromGroup(req, res, {
    userToRemoveId,
    loggedInUserId: userToRemoveId,
    subscription,
  })
}

/**
 * @param {import("express").Request} req
 * @param {import("express").Response} res
 * @param {string} userToRemoveId
 * @param {string} loggedInUserId
 * @param {Subscription} subscription
 * @returns {Promise<void>}
 * @private
 */
async function _removeUserFromGroup(
  req,
  res,
  { userToRemoveId, loggedInUserId, subscription }
) {
  const subscriptionId = subscription._id

  const groupSSOActive = (
    await Modules.promises.hooks.fire('hasGroupSSOEnabled', subscription)
  )?.[0]
  if (groupSSOActive) {
    await Modules.promises.hooks.fire(
      'unlinkUserFromGroupSSO',
      userToRemoveId,
      subscriptionId
    )
  }

  try {
    await UserAuditLogHandler.promises.addEntry(
      userToRemoveId,
      'remove-from-group-subscription',
      loggedInUserId,
      req.ip,
      { subscriptionId }
    )
  } catch (auditLogError) {
    throw OError.tag(auditLogError, 'error adding audit log entry', {
      userToRemoveId,
      subscriptionId,
    })
  }

  try {
    await SubscriptionGroupHandler.promises.removeUserFromGroup(
      subscriptionId,
      userToRemoveId
    )
  } catch (error) {
    logger.err(
      { err: error, userToRemoveId, subscriptionId },
      'error removing self from group'
    )
    return res.sendStatus(500)
  }

  res.sendStatus(200)
}

module.exports = {
  removeUserFromGroup: expressify(removeUserFromGroup),
  removeSelfFromGroup: expressify(removeSelfFromGroup),
}