Adding a editPrize mutation

server/src/schema/mutations/EditPrize.js

@@ -0,0 +1,55 @@
+import {
+  GraphQLNonNull,
+  GraphQLID,
+  GraphQLInt
+} from 'graphql'
+import { AuthentificationError, DatabaseError } from '../../errors'
+import { EventType } from '../types'
+import { Event } from '../../models'
+
+const args = {
+  eventDesignator: { type: new GraphQLNonNull(GraphQLID) },
+  rank: { type: new GraphQLNonNull(GraphQLInt) },
+  amount: { type: GraphQLInt }
+}
+
+const resolve = (parent, { eventDesignator, rank, amount }, context) => {
+  const hostId = context.userId
+  if (!hostId) {
+    throw new AuthentificationError()
+  }
+  return new Promise((resolve, reject) => {
+    Event.findOne({ designator: eventDesignator, hostId }).exec((err, event) => {
+      if (err) {
+        reject(err)
+      } else if (!event) {
+        reject(new DatabaseError('None of the events you own respond to that designator'))
+      } else {
+        let prizeIndex
+        event.prizes.find((prize, index) => {
+          if (prize.rank === rank) {
+            prizeIndex = index
+          }
+        })
+
+        event.prizes[prizeIndex].amount = amount || event.prizes[prizeIndex].amount
+        event.save((err) => {
+          if (err) reject(err)
+          else {
+            resolve(event)
+          }
+        })
+      }
+    })
+  })
+}
+
+const mutation = {
+  editPrize: {
+    type: EventType,
+    args,
+    resolve
+  }
+}
+
+export default mutation

server/src/schema/mutations/index.js

@@ -10,6 +10,7 @@ import AddRuleMutation from './AddRule'
 import EditRuleMutation from './EditRule'
 import ReorderRulesMutation from './ReorderRules'
 import AddPrizeMutation from './AddPrize'
+import EditPrizeMutation from './EditPrize'
 import CreateFormulaMutation from './CreateFormula'
 import CreateAndSetFormulaMutation from './CreateAndSetFormula'
 import CreatePlotterMutation from './CreatePlotter'
@@ -26,6 +27,7 @@ const Mutation = new GraphQLObjectType({
     EditRuleMutation,
     ReorderRulesMutation,
     AddPrizeMutation,
+    EditPrizeMutation,
     CreateFormulaMutation,
     CreateAndSetFormulaMutation,
     CreatePlotterMutation,