/*
 * server component for the TimeLimit App
 * Copyright (C) 2019 - 2022 Jonas Lochmann
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

import { parseParentAction } from '../../../../action/serialization'
import { ClientPushChangesRequestAction } from '../../../../api/schema'
import { isSerializedParentAction } from '../../../../api/validator'
import { UserFlags } from '../../../../model/userflags'
import { EventHandler } from '../../../../monitoring/eventhandler'
import { Cache } from '../cache'
import { dispatchParentAction as dispatchParentActionInternal } from '../dispatch-parent-action'
import { SourceDeviceNotFoundException } from '../exception/illegal-state'
import { SelfLimitNotPossibleException } from '../exception/self-limit'
import { AuthenticationMethod } from '../types'
import { dispatch } from './helper'

export async function dispatchParentAction ({
  action, eventHandler, cache, isChildLimitAdding, deviceId, authentication
}: {
  action: ClientPushChangesRequestAction
  cache: Cache
  eventHandler: EventHandler
  isChildLimitAdding: boolean
  deviceId: string
  authentication: AuthenticationMethod
}) {
  return dispatch({
    action,
    eventHandler,
    type: 'parent',
    validator: isSerializedParentAction,
    parser: parseParentAction,
    applier: async (parsedAction) => {
      if (isChildLimitAdding) {
        const deviceEntryUnsafe = await cache.database.device.findOne({
          attributes: ['currentUserId'],
          where: {
            familyId: cache.familyId,
            deviceId,
            currentUserId: action.userId
          },
          transaction: cache.transaction
        })

        if (!deviceEntryUnsafe) {
          throw new SourceDeviceNotFoundException()
        }

        const deviceUserId = deviceEntryUnsafe.currentUserId

        if (!deviceUserId) {
          throw new SelfLimitNotPossibleException({
            staticMessage: 'no device user id set but child add self limit action requested'
          })
        }

        const deviceUserEntryUnsafe = await cache.database.user.findOne({
          attributes: ['flags'],
          where: {
            familyId: cache.familyId,
            userId: deviceUserId,
            type: 'child'
          },
          transaction: cache.transaction
        })

        if (!deviceUserEntryUnsafe) {
          throw new SelfLimitNotPossibleException({
            staticMessage: 'no child user found for child limit adding action'
          })
        }

        if ((parseInt(deviceUserEntryUnsafe.flags, 10) & UserFlags.ALLOW_SELF_LIMIT_ADD) !== UserFlags.ALLOW_SELF_LIMIT_ADD) {
          throw new SelfLimitNotPossibleException({
            staticMessage: 'child add limit action found but not allowed'
          })
        }

        await dispatchParentActionInternal({
          action: parsedAction,
          cache,
          parentUserId: action.userId,
          sourceDeviceId: deviceId,
          fromChildSelfLimitAddChildUserId: deviceUserId,
          authentication
        })
      } else {
        await dispatchParentActionInternal({
          action: parsedAction,
          cache,
          parentUserId: action.userId,
          sourceDeviceId: deviceId,
          fromChildSelfLimitAddChildUserId: null,
          authentication
        })
      }
    }
  })
}