app/api/db/migrations/20210925001652_add_project_forking/migration.sql

@@ -0,0 +1,5 @@
+-- AlterTable
+ALTER TABLE "Project" ADD COLUMN     "forkedFromId" TEXT;
+
+-- AddForeignKey
+ALTER TABLE "Project" ADD FOREIGN KEY ("forkedFromId") REFERENCES "Project"("id") ON DELETE SET NULL ON UPDATE CASCADE;

app/api/db/schema.prisma

@@ -53,7 +53,10 @@ model Project {
   deleted     Boolean  @default(false)
   cadPackage  CadPackage @default(openscad)
   socialCard  SocialCard?
+  forkedFromId String?
+  forkedFrom   Project? @relation("Fork", fields: [forkedFromId], references: [id])
 
+  childForks   Project[] @relation("Fork")
   Comment      Comment[]
   Reaction     ProjectReaction[]
   @@unique([title, userId])

app/api/src/graphql/projects.sdl.ts

@@ -14,6 +14,9 @@ export const schema = gql`
     socialCard: SocialCard
     Comment: [Comment]!
     Reaction(userId: String): [ProjectReaction]!
+    forkedFromId: String
+    forkedFrom: Project
+    childForks: [Project]!
   }
 
   enum CadPackage {
@@ -37,6 +40,11 @@ export const schema = gql`
     cadPackage: CadPackage!
   }
 
+  input ForkProjectInput {
+    userId: String!
+    forkedFromId: String
+  }
+
   input UpdateProjectInput {
     title: String
     description: String
@@ -47,7 +55,7 @@ export const schema = gql`
 
   type Mutation {
     createProject(input: CreateProjectInput!): Project!
-    forkProject(input: CreateProjectInput!): Project!
+    forkProject(input: ForkProjectInput!): Project!
     updateProject(id: String!, input: UpdateProjectInput!): Project!
     updateProjectImages(
       id: String!

app/api/src/services/projects/projects.ts

@@ -78,13 +78,26 @@ export const createProject = async ({ input }: CreateProjectArgs) => {
 }
 
 export const forkProject = async ({ input }) => {
-  // Only difference between create and fork project is that fork project will generate a unique title
+  requireAuth()
-  // (for the user) if there is a conflict
+  const projectData = await db.project.findUnique({
+    where: {
+      id: input.forkedFromId,
+    },
+  })
   const isUniqueCallback = isUniqueProjectTitle(input.userId)
-  const title = await generateUniqueString(input.title, isUniqueCallback)
+  let title = projectData.title
-  // TODO change the description to `forked from userName/projectName ${rest of description}`
+
+  title = await generateUniqueString(title, isUniqueCallback)
+
+  const { code, description, cadPackage } = projectData
   return db.project.create({
-    data: foreignKeyReplacement({ ...input, title }),
+    data: foreignKeyReplacement({
+      ...input,
+      title,
+      code,
+      description,
+      cadPackage,
+    }),
   })
 }
 

app/web/src/components/IdeHeader/IdeHeader.tsx

@@ -8,11 +8,24 @@ import ExternalScript from 'src/components/EncodedUrl/ExternalScript'
 import Svg from 'src/components/Svg/Svg'
 import NavPlusButton from 'src/components/NavPlusButton'
 import ProfileSlashLogin from 'src/components/ProfileSlashLogin'
+import { useMutation } from '@redwoodjs/web'
 import Gravatar from 'src/components/Gravatar/Gravatar'
 import EditableProjectTitle from 'src/components/EditableProjecTitle/EditableProjecTitle'
 import CaptureButton from 'src/components/CaptureButton/CaptureButton'
+
 import { ReactNode } from 'react'
 
+const FORK_PROJECT_MUTATION = gql`
+  mutation ForkProjectMutation($input: ForkProjectInput!) {
+    forkProject(input: $input) {
+      id
+      title
+      description
+      code
+    }
+  }
+`
+
 const TopButton = ({
   onClick,
   children,
@@ -111,7 +124,6 @@ const IdeHeader = ({
         ) : (
           children
         )}
-        {/* <TopButton>Fork</TopButton> */}
         <div className="h-8 w-8">
           <NavPlusButton />
         </div>
@@ -130,6 +142,26 @@ function DefaultTopButtons({
   handleRender,
   canEdit,
 }) {
+  const { currentUser } = useAuth()
+  const [createFork] = useMutation(FORK_PROJECT_MUTATION, {
+    onCompleted: () => {},
+  })
+  const handleFork = () => {
+    const prom = createFork({
+      variables: {
+        input: {
+          userId: currentUser.sub,
+          forkedFromId: project.id,
+        },
+      },
+    })
+    // toast.promise(prom, {
+    //   loading: 'Saving Image/s',
+    //   success: <b>Image/s saved!</b>,
+    //   error: <b>Problem saving.</b>,
+    // })
+  }
+
   return (
     <>
       {canEdit && !projectTitle && (
@@ -212,6 +244,15 @@ function DefaultTopButtons({
           )
         }}
       </Popover>
+      {currentUser?.id && (
+        <TopButton
+          onClick={handleFork}
+          name="Fork"
+          className=" bg-ch-blue-650 bg-opacity-30 hover:bg-opacity-80 text-ch-gray-300"
+        >
+          <Svg name="fork-new" className="w-6 h-6 text-ch-blue-400" />
+        </TopButton>
+      )}
     </>
   )
 }