Hook up reactions data

api/src/services/partReactions/partReactions.js

@@ -1,3 +1,7 @@
+import { UserInputError } from '@redwoodjs/api'
+
+import { requireAuth } from 'src/lib/auth'
+import { requireOwnership } from 'src/lib/owner'
 import { db } from 'src/lib/db'
 import { foreignKeyReplacement } from 'src/services/helpers'
 
@@ -11,10 +15,26 @@ export const partReaction = ({ id }) => {
   })
 }
 
-export const createPartReaction = ({ input }) => {
-  return db.partReaction.create({
-    data: foreignKeyReplacement(input),
-  })
+export const togglePartReaction = async ({ input }) => {
+  // if write fails emote_userId_partId @@unique constraint, then delete it instead
+  requireAuth()
+  await requireOwnership({userId: input?.userId})
+  const legalReactions = ['❤️', '👍', '😄', '🙌'] // TODO figure out a way of sharing code between FE and BE, so this is consistent with web/src/components/EmojiReaction/EmojiReaction.js
+  if(!legalReactions.includes(input.emote)) {
+    throw new UserInputError(`You can't react with '${input.emote}', only the following are allowed: ${legalReactions.join(', ')}`)
+  }
+  let dbPromise
+  const inputClone = {...input} // TODO foreignKeyReplacement mutates input, which I should fix but am lazy right now
+  try{
+    dbPromise = await db.partReaction.create({
+      data: foreignKeyReplacement(input),
+    })
+  } catch(e) {
+    dbPromise = db.partReaction.delete({
+      where: { emote_userId_partId: inputClone},
+    })
+  }
+  return dbPromise
 }
 
 export const updatePartReaction = ({ id, input }) => {

api/src/services/parts/parts.js

@@ -57,5 +57,5 @@ export const Part = {
   Comment: (_obj, { root }) =>
     db.part.findOne({ where: { id: root.id } }).Comment(),
   Reaction: (_obj, { root }) =>
-    db.part.findOne({ where: { id: root.id } }).Reaction(),
+    db.part.findOne({ where: { id: root.id } }).Reaction({where: {userId: _obj.userId}}),
 }