feat: order streams by last child creation

js/src/hooks/use-create-particle.ts

@@ -1,9 +1,11 @@
 import { useMutation } from "@tanstack/react-query";
-import { createParticle } from "@/lib/firestore-particles";
+import { createParticle, updateStreamParticleLastChildParticle } from "@/lib/firestore-particles";
 import type { ParticleType, ParticlePropertiesMap } from "@/api/types";
+import { particlePath, ParticlePath, toFirestoreChildrenPath, toFirestoreDocPath } from "@/lib/particle-path";
 
 interface CreateParticleParams<T extends ParticleType = ParticleType> {
-  collectionPath: string;
+  // Path to which the new particle will be added as a child
+  path: ParticlePath;
   type: T;
   properties: ParticlePropertiesMap[T];
   createdByEmail: string;
@@ -11,29 +13,41 @@ interface CreateParticleParams<T extends ParticleType = ParticleType> {
 
 export function useCreateParticle() {
   return useMutation({
-    mutationFn: (params: CreateParticleParams) =>
-      createParticle(
-        params.collectionPath,
+    mutationFn: async (params: CreateParticleParams) => {
+      const collectionPath = toFirestoreChildrenPath(params.path);
+      const result = await createParticle(
+        collectionPath,
         params.type,
         params.properties,
         params.createdByEmail,
-      ),
+      );
+
+      const streamDocPath = toFirestoreDocPath(params.path);
+      await updateStreamParticleLastChildParticle(streamDocPath);
+      return result;
+    }
   });
 }
 
-type CreateStreamParticleParams = Omit<CreateParticleParams<"stream">, "type"> & {
+type CreateStreamParticleParams = {
+  networkId: string;
+  properties: ParticlePropertiesMap["stream"];
+  createdByEmail: string;
   visibleTo?: string[];
 };
 
 export function useCreateStreamParticle() {
   return useMutation({
-    mutationFn: (params: CreateStreamParticleParams) =>
-      createParticle(
-        params.collectionPath,
+    mutationFn: async (params: CreateStreamParticleParams) => {
+      const path = particlePath(params.networkId, []);
+      const networkCollectionPath = toFirestoreChildrenPath(path);
+      return await createParticle(
+        networkCollectionPath,
         "stream",
         params.properties,
         params.createdByEmail,
         params.visibleTo,
-      ),
+      );
+    }
   });
 }