Story gen fixes (#9)

* Add apphosting.yaml

* Add img logging

* Adjust img prompt

* Update img prompt

* Update story component

* Add persistent session storage

* Use global var for session mgmt

* Remove console log

* Fix update button bug

* Minor refactors

* Add license

* Add license

Author: devchas

genkit-angular-story-generator/src/app/app.config.server.ts

@@ -1,3 +1,10 @@
+/*!
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
 import { mergeApplicationConfig, ApplicationConfig } from '@angular/core';
 import { provideServerRendering } from '@angular/platform-server';
 import { provideServerRouting } from '@angular/ssr';

genkit-angular-story-generator/src/app/app.routes.server.ts

@@ -1,3 +1,10 @@
+/*!
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
 import { RenderMode, ServerRoute } from '@angular/ssr';
 
 export const serverRoutes: ServerRoute[] = [

genkit-angular-story-generator/src/app/story.service.ts

@@ -31,14 +31,13 @@ export class StoryService {
   // session management in a production application.
   sessionId = linkedSignal<string, string>({
     source: () => this.premiseResource.value().storyPremise,
-    computation: (_agentResponse, previous) =>
-      (!previous ? Date.now() + '' + Math.floor(Math.random() * 1000000000) : previous.value)
+    computation: (_newPremise, previous) => !previous ? randomId() : previous.value
   });
 
   // Used to determine whether to show the update story button in the UserInputComponenet
   hasPremiseUpdated = linkedSignal<string, boolean>({
     source: () => this.premiseResource.value().storyPremise,
-    computation: (newPremise, previous) => (previous || false) && newPremise !== previous!.source
+    computation: (newPremise, previous) => !!previous && newPremise !== previous!.source
   });
 
   // Only clear the session on initial page load
@@ -66,4 +65,8 @@ interface StoryPremise {
   storyPremise: string;
   nextQuestion: string;
   premiseOptions: string[];
+}
+
+function randomId(): string {
+  return Date.now() + '' + Math.floor(Math.random() * 1000000000);
 }

genkit-angular-story-generator/src/main.server.ts

@@ -1,3 +1,10 @@
+/*!
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
 import { bootstrapApplication } from '@angular/platform-browser';
 import { AppComponent } from './app/app.component';
 import { config } from './app/app.config.server';

genkit-angular-story-generator/src/prompts.ts

@@ -56,7 +56,6 @@ Return a one sentence string containing the next queston. Do not be conversation
 
 Create some options to answer the question you just created asked. Return a
 comma separated list strings: ["example_1", "example_2", "example_3", "example_4", "example_5"].
-If it doesn't make sense to offer for options (e.g. character name), return an empty list: [].
 If your question asks if the user is satisifed with the story, return an empty list.
 
 The final response should be structured as follows:

genkit-angular-story-generator/src/server.ts

@@ -1,3 +1,10 @@
+/*!
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
 import {
   AngularNodeAppEngine,
   createNodeRequestHandler,