/* eslint-disable
   max-len,
 */
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS101: Remove unnecessary use of Array.from
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const SessionManager = require('../Authentication/SessionManager')
const UserMembershipHandler = require('./UserMembershipHandler')
const Errors = require('../Errors/Errors')
const EmailHelper = require('../Helpers/EmailHelper')
const { csvAttachment } = require('../../infrastructure/Response')
const { UserIsManagerError } = require('./UserMembershipErrors')
const CSVParser = require('json2csv').Parser
const SSOConfigManager = require('../../../../modules/managed-users/app/src/SSOConfigManager')

async function manageGroupMembers(req, res, next) {
  const { entity, entityConfig } = req

  const ssoConfig = await SSOConfigManager.promises.getSSOConfig(
    entity.ssoConfig
  )
  return entity.fetchV1Data(function (error, entity) {
    if (error != null) {
      return next(error)
    }
    return UserMembershipHandler.getUsers(
      entity,
      entityConfig,
      function (error, users) {
        let entityName
        if (error != null) {
          return next(error)
        }
        const entityPrimaryKey =
          entity[entityConfig.fields.primaryKey].toString()
        if (entityConfig.fields.name) {
          entityName = entity[entityConfig.fields.name]
        }

        return res.render('user_membership/group-members-react', {
          name: entityName,
          groupId: entityPrimaryKey,
          users,
          groupSize: entity.membersLimit,
          managedUsersActive: entity.groupPolicy != null,
          groupSSOActive: ssoConfig?.enabled,
        })
      }
    )
  })
}

async function manageGroupManagers(req, res, next) {
  await _renderManagersPage(
    req,
    res,
    next,
    'user_membership/group-managers-react'
  )
}

async function manageInstitutionManagers(req, res, next) {
  await _renderManagersPage(
    req,
    res,
    next,
    'user_membership/institution-managers-react'
  )
}

async function managePublisherManagers(req, res, next) {
  await _renderManagersPage(
    req,
    res,
    next,
    'user_membership/publisher-managers-react'
  )
}

async function _renderManagersPage(req, res, next, template) {
  const { entity, entityConfig } = req
  return entity.fetchV1Data(function (error, entity) {
    if (error != null) {
      return next(error)
    }
    return UserMembershipHandler.getUsers(
      entity,
      entityConfig,
      function (error, users) {
        let entityName
        if (error != null) {
          return next(error)
        }
        const entityPrimaryKey =
          entity[entityConfig.fields.primaryKey].toString()
        if (entityConfig.fields.name) {
          entityName = entity[entityConfig.fields.name]
        }
        return res.render(template, {
          name: entityName,
          users,
          groupId: entityPrimaryKey,
        })
      }
    )
  })
}

module.exports = {
  manageGroupMembers,
  manageGroupManagers,
  manageInstitutionManagers,
  managePublisherManagers,
  add(req, res, next) {
    const { entity, entityConfig } = req
    const email = EmailHelper.parseEmail(req.body.email)
    if (email == null) {
      return res.status(400).json({
        error: {
          code: 'invalid_email',
          message: req.i18n.translate('invalid_email'),
        },
      })
    }

    if (entityConfig.readOnly) {
      return next(new Errors.NotFoundError('Cannot add users to entity'))
    }

    return UserMembershipHandler.addUser(
      entity,
      entityConfig,
      email,
      function (error, user) {
        if (error != null ? error.alreadyAdded : undefined) {
          return res.status(400).json({
            error: {
              code: 'user_already_added',
              message: req.i18n.translate('user_already_added'),
            },
          })
        }
        if (error != null ? error.userNotFound : undefined) {
          return res.status(404).json({
            error: {
              code: 'user_not_found',
              message: req.i18n.translate('user_not_found'),
            },
          })
        }
        if (error != null) {
          return next(error)
        }
        return res.json({ user })
      }
    )
  },
  remove(req, res, next) {
    const { entity, entityConfig } = req
    const { userId } = req.params

    if (entityConfig.readOnly) {
      return next(new Errors.NotFoundError('Cannot remove users from entity'))
    }

    const loggedInUserId = SessionManager.getLoggedInUserId(req.session)
    if (loggedInUserId === userId) {
      return res.status(400).json({
        error: {
          code: 'managers_cannot_remove_self',
          message: req.i18n.translate('managers_cannot_remove_self'),
        },
      })
    }

    return UserMembershipHandler.removeUser(
      entity,
      entityConfig,
      userId,
      function (error, user) {
        if (error && error instanceof UserIsManagerError) {
          return res.status(400).json({
            error: {
              code: 'managers_cannot_remove_admin',
              message: req.i18n.translate('managers_cannot_remove_admin'),
            },
          })
        }
        if (error != null) {
          return next(error)
        }
        return res.sendStatus(200)
      }
    )
  },
  exportCsv(req, res, next) {
    const { entity, entityConfig } = req
    const fields = ['email', 'last_logged_in_at', 'last_active_at']

    return UserMembershipHandler.getUsers(
      entity,
      entityConfig,
      function (error, users) {
        if (error != null) {
          return next(error)
        }
        const csvParser = new CSVParser({ fields })
        csvAttachment(res, csvParser.parse(users), 'Group.csv')
      }
    )
  },
  new(req, res, next) {
    return res.render('user_membership/new', {
      entityName: req.params.name,
      entityId: req.params.id,
    })
  },
  create(req, res, next) {
    const entityId = req.params.id
    const entityConfig = req.entityConfig

    return UserMembershipHandler.createEntity(
      entityId,
      entityConfig,
      function (error, entity) {
        if (error != null) {
          return next(error)
        }
        return res.redirect(entityConfig.pathsFor(entityId).index)
      }
    )
  },
}