Add mutation to update a snapshot

server/books/schema/mutations/__init__.py

@@ -1,7 +1,7 @@
 from books.schema.mutations.chapter import UpdateChapterVisibility
 from books.schema.mutations.contentblock import MutateContentBlock, AddContentBlock, DeleteContentBlock
 from books.schema.mutations.module import UpdateSolutionVisibility, UpdateLastModule, SyncModuleVisibility
-from books.schema.mutations.snapshot import CreateSnapshot, ApplySnapshot, ShareSnapshot
+from books.schema.mutations.snapshot import CreateSnapshot, ApplySnapshot, ShareSnapshot, UpdateSnapshot
 from books.schema.mutations.topic import UpdateLastTopic
 
 
@@ -17,3 +17,4 @@ class BookMutations(object):
     create_snapshot = CreateSnapshot.Field()
     apply_snapshot = ApplySnapshot.Field()
     share_snapshot = ShareSnapshot.Field()
+    update_snapshot = UpdateSnapshot.Field()

server/books/schema/mutations/snapshot.py

@@ -2,6 +2,7 @@ import graphene
 from django.db.models import Q
 from graphene import relay
 
+from api.types import FailureNode
 from api.utils import get_object
 from books.models import Module, ContentBlock, Chapter
 from books.models.snapshot import Snapshot
@@ -9,6 +10,19 @@ from books.schema.nodes import SnapshotNode, ModuleNode
 from users.models import SchoolClass
 
 
+class NotOwner(graphene.ObjectType):
+    class Meta:
+        interfaces = (FailureNode,)
+
+
+NotOwnerFailure = NotOwner(reason="Not the owner")
+
+
+class UpdateSnapshotResult(graphene.Union):
+    class Meta:
+        types = (SnapshotNode, NotOwner,)
+
+
 class CreateSnapshot(relay.ClientIDMutation):
     class Input:
         module = graphene.String(required=True)
@@ -30,6 +44,28 @@ class CreateSnapshot(relay.ClientIDMutation):
         return cls(snapshot=snapshot, success=True)
 
 
+class UpdateSnapshot(relay.ClientIDMutation):
+    class Input:
+        id = graphene.ID(required=True)
+        title = graphene.String()
+
+    snapshot = graphene.Field(UpdateSnapshotResult)
+
+    @classmethod
+    def mutate_and_get_payload(cls, root, info, **args):
+        id = args.get('id')
+        title = args.get('title')
+        user = info.context.user
+
+        snapshot = get_object(Snapshot, id)
+        if snapshot.creator != user:
+            return cls(snapshot=NotOwnerFailure)
+        if title is not None:
+            snapshot.title = title
+            snapshot.save()
+        return cls(snapshot=snapshot)
+
+
 class ApplySnapshot(relay.ClientIDMutation):
     class Input:
         snapshot = graphene.ID(required=True)

server/books/schema/nodes/snapshot.py

@@ -141,7 +141,7 @@ class SnapshotNode(DjangoObjectType):
 
     @staticmethod
     def resolve_title(parent: Snapshot, info, **kwargs):
-        return f'Snapshot {parent.id}'
+        return parent.title if parent.title is not None else f'Snapshot {parent.id}'
 
     @staticmethod
     def resolve_meta_title(parent, info, **kwargs):

server/schema.graphql

@@ -301,16 +301,6 @@ type ContentBlockNode implements Node & ContentBlockInterface {
   originalCreator: PublicUserNode
 }
 
-type ContentBlockNodeConnection {
-  pageInfo: PageInfo!
-  edges: [ContentBlockNodeEdge]!
-}
-
-type ContentBlockNodeEdge {
-  node: ContentBlockNode
-  cursor: String!
-}
-
 input ContentElementInput {
   id: String
   type: InputTypes!
@@ -469,6 +459,10 @@ type DuplicateName {
   reason: String
 }
 
+interface FailureNode {
+  reason: String
+}
+
 type FieldError {
   code: String
 }
@@ -683,6 +677,7 @@ type Mutation {
   createSnapshot(input: CreateSnapshotInput!): CreateSnapshotPayload
   applySnapshot(input: ApplySnapshotInput!): ApplySnapshotPayload
   shareSnapshot(input: ShareSnapshotInput!): ShareSnapshotPayload
+  updateSnapshot(input: UpdateSnapshotInput!): UpdateSnapshotPayload
   _debug: DjangoDebug
 }
 
@@ -706,6 +701,10 @@ type NotFound {
   reason: String
 }
 
+type NotOwner implements FailureNode {
+  reason: String
+}
+
 type NoteNode implements Node {
   id: ID!
   text: String!
@@ -756,16 +755,6 @@ type ObjectiveNode implements Node {
   mine: Boolean
 }
 
-type ObjectiveNodeConnection {
-  pageInfo: PageInfo!
-  edges: [ObjectiveNodeEdge]!
-}
-
-type ObjectiveNodeEdge {
-  node: ObjectiveNode
-  cursor: String!
-}
-
 type PageInfo {
   hasNextPage: Boolean!
   hasPreviousPage: Boolean!
@@ -965,20 +954,14 @@ type SnapshotContentBlockNode implements Node & ContentBlockInterface {
 }
 
 type SnapshotNode implements Node {
-  id: ID!
-  module: ModuleNode!
-  chapters: [SnapshotChapterNode]
-  hiddenContentBlocks(offset: Int, before: String, after: String, first: Int, last: Int, slug: String, title: String): ContentBlockNodeConnection!
-  created: DateTime!
-  creator: String!
-  shared: Boolean!
-  objectiveGroups: [SnapshotObjectiveGroupNode]
-  hiddenObjectives(offset: Int, before: String, after: String, first: Int, last: Int, text: String): ObjectiveNodeConnection!
   title: String
-  metaTitle: String
+  id: ID!
-  heroImage: String
+  chapters: [SnapshotChapterNode]
   changes: SnapshotChangesNode
   mine: Boolean
+  shared: Boolean!
+  creator: String!
+  objectiveGroups: [SnapshotObjectiveGroupNode]
 }
 
 type SnapshotNodeConnection {
@@ -1431,6 +1414,19 @@ type UpdateSettingPayload {
   clientMutationId: String
 }
 
+input UpdateSnapshotInput {
+  id: ID!
+  title: String
+  clientMutationId: String
+}
+
+type UpdateSnapshotPayload {
+  snapshot: UpdateSnapshotResult
+  clientMutationId: String
+}
+
+union UpdateSnapshotResult = SnapshotNode | NotOwner
+
 input UpdateSolutionVisibilityInput {
   slug: String
   enabled: Boolean