issues-95 get saving and forking to work

api/src/services/helpers.js

@@ -14,3 +14,17 @@ export const foreignKeyReplacement = (input) => {
 
 export const enforceAlphaNumeric = (string) =>
   string.replace(/([^a-zA-Z\d_:])/g, '-')
+
+export const generateUniqueString = async (
+  seed,
+  isUniqueCallback,
+  count = 0
+) => {
+  const isUnique = !(await isUniqueCallback(seed))
+  if (isUnique) {
+    return seed
+  }
+  count += 1
+  const newSeed = count === 1 ? `${seed}_${count}` : seed.slice(0, -1) + count
+  return generateUniqueString(newSeed, isUniqueCallback, count)
+}

api/src/services/parts/parts.js

@@ -2,6 +2,7 @@ import { db } from 'src/lib/db'
 import {
   foreignKeyReplacement,
   enforceAlphaNumeric,
+  generateUniqueString,
 } from 'src/services/helpers'
 import { requireAuth } from 'src/lib/auth'
 import { requireOwnership } from 'src/lib/owner'
@@ -38,6 +39,25 @@ export const createPart = async ({ input }) => {
   })
 }
 
+export const forkPart = async ({ input }) => {
+  // Only difference between create nda clone part is that clone part will generate a unique title
+  // (for the user) if there is a conflict
+  const isUniqueCallback = async (seed) =>
+    db.part.findOne({
+      where: {
+        title_userId: {
+          title: seed,
+          userId: input.userId,
+        },
+      },
+    })
+  const title = await generateUniqueString(input.title, isUniqueCallback)
+  // TODO change the description to `forked from userName/partName ${rest of description}`
+  return db.part.create({
+    data: foreignKeyReplacement({ ...input, title }),
+  })
+}
+
 export const updatePart = async ({ id, input }) => {
   requireAuth()
   await requireOwnership({ partId: id })