feat(core): add project field on invites (#4588)

* feat(core): add project field on invites

* chore(workspaces): add workspaceSlug on invite

packages/server/modules/workspaces/graph/resolvers/projects.ts

@@ -1,8 +1,10 @@
 import { db } from '@/db/knex'
+import { StreamNotFoundError } from '@/modules/core/errors/stream'
 import { Resolvers } from '@/modules/core/graph/generated/graphql'
 import { getFeatureFlags } from '@/modules/shared/helpers/envHelper'
 import { getPaginatedItemsFactory } from '@/modules/shared/services/paginatedItems'
 import { WorkspaceTeamMember } from '@/modules/workspaces/domain/types'
+import { WorkspaceNotFoundError } from '@/modules/workspaces/errors/workspace'
 import { intersectProjectCollaboratorsAndWorkspaceCollaboratorsFactory } from '@/modules/workspaces/repositories/projects'
 import {
   countInvitableCollaboratorsByProjectIdFactory,
@@ -68,6 +70,28 @@ export default FF_WORKSPACES_MODULE_ENABLED
         addedToWorkspaceTotalCount: async (parent) => {
           return parent.length
         }
+      },
+      PendingStreamCollaborator: {
+        workspaceSlug: async (parent, _args, ctx) => {
+          const project = await ctx.loaders.streams.getStream.load(parent.streamId)
+          if (!project) {
+            throw new StreamNotFoundError(null, {
+              info: { projectId: parent.streamId }
+            })
+          }
+          if (!project.workspaceId) {
+            return null
+          }
+          const workspace = await ctx.loaders.workspaces?.getWorkspace.load(
+            project.workspaceId
+          )
+          if (!workspace) {
+            throw new WorkspaceNotFoundError(null, {
+              info: { workspaceId: project.workspaceId }
+            })
+          }
+          return workspace.slug
+        }
       }
     } as Resolvers)
   : {}