Refactor exception usage

src/function/sync/apply-actions/dispatch-helper/parent-action.ts

@@ -0,0 +1,106 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 - 2020 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 { dispatch } from './helper'
+
+export async function dispatchParentAction ({ action, eventHandler, cache, isChildLimitAdding, deviceId }: {
+  action: ClientPushChangesRequestAction
+  cache: Cache
+  eventHandler: EventHandler
+  isChildLimitAdding: boolean
+  deviceId: string
+}) {
+  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
+        })
+      } else {
+        await dispatchParentActionInternal({
+          action: parsedAction,
+          cache,
+          parentUserId: action.userId,
+          sourceDeviceId: deviceId,
+          fromChildSelfLimitAddChildUserId: null
+        })
+      }
+    }
+  })
+}