StoryTeller/docs/development-workflow.md

StoryTeller Development Workflow

Stack and Layout

• Backend: Quarkus 3.31.2 (Java 21, Maven).
• Frontend: React 18 + TypeScript + Vite in src/main/web.
• Database: H2 in-memory with Liquibase migrations (data resets on restart).
• Auth: SmallRye JWT with RSA key signing; BCrypt password hashing.
• API Contract: OpenAPI 3.0.3 at src/main/resources/openapi/story-teller-api.yaml.
• Generated Code:
  • Java interfaces/models: target/generated-sources/openapi/java/src/gen/java/
  • TypeScript client: src/main/web/src/api/generated/

Local Setup

1. Prerequisites: JDK 21, Maven 3.9+, Node.js 22 (managed by frontend-maven-plugin).
2. Database: H2 in-memory — no external DB setup required. Liquibase creates the schema and seeds the admin user automatically on each startup.
3. Build everything: mvn package (generates API code, compiles Java, builds frontend, runs tests).
4. Run in dev mode: mvn quarkus:dev (hot reload, frontend proxy at http://localhost:5173).
5. Frontend dev: cd src/main/web && npm run dev (standalone Vite dev server, proxies /api to Quarkus).

Default Admin Account

After first startup, Liquibase seeds an admin user:

• Username: admin
• Password: admin

Change this immediately in non-development environments.

OpenAPI-First Rules

• The OpenAPI YAML is the single source of truth for backend and frontend API contracts.
• Never edit generated files in target/generated-sources/ or src/main/web/src/api/generated/.
• To change the API:
  1. Edit src/main/resources/openapi/story-teller-api.yaml.
  2. Run mvn generate-sources to regenerate Java and TypeScript.
  3. Update service/resource implementations to match new interfaces.

Common Commands

Command	Description
mvn generate-sources	Regenerate Java+TS from OpenAPI
mvn compile	Compile Java backend
mvn test	Run unit tests
mvn package	Full build: Java + frontend + tests
mvn quarkus:dev	Dev mode with hot reload
cd src/main/web && npm run dev	Frontend dev server

Architecture Overview

de.neitzel.storyteller
├── business/         # Business logic services
├── common/
│   └── security/     # JWT, password hashing, auth context
├── data/
│   ├── entity/       # JPA entities
│   └── repository/   # Panache repositories
└── fascade/
    ├── api/          # Generated OpenAPI interfaces (DO NOT EDIT)
    ├── model/        # Generated OpenAPI models (DO NOT EDIT)
    └── rest/         # REST resource implementations

Authentication Flow

1. Client sends POST /api/auth/login with username/password.
2. Server verifies credentials, returns signed JWT with user claims.
3. Client stores JWT in localStorage and sends it as Authorization: Bearer <token> on all subsequent requests.
4. Quarkus SmallRye JWT validates the token on protected endpoints.
5. AuthContext (request-scoped CDI bean) extracts user identity from the JWT.

Authorization

• Public: /api/auth/*
• Admin-only: /api/users/* (user management)
• Authenticated users: /api/scenarios/*, /api/stories/* (with per-user ownership checks)

Story Generation & Compaction

The AI step generation flow includes automatic context compaction:

1. Client sends a direction prompt.
2. Server estimates context size (scene + characters + unmerged steps + direction).
3. If it exceeds the limit (~12K chars), the oldest half of unmerged steps are compacted into the scene description.
4. Steps are marked addedToScene = true after compaction.
5. The AI generates the next step from the (possibly compacted) context.
6. The response includes a compacted flag so the frontend can prompt the user to review the updated scene.

Note: The current AI adapter is a stub that generates placeholder text. Replace the generateAiContinuation and compactScene methods in StoryService with actual LLM integration.

Testing

• Unit tests use JUnit 5 + Mockito in src/test/java/.
• Tests cover auth, user service, scenario service, and story service.
• Run with mvn test.

Troubleshooting

• JWT errors: Ensure privateKey.pem and publicKey.pem exist in src/main/resources/.
• Generated code issues: Run mvn clean generate-sources to rebuild from scratch.
• TypeScript errors: Check that src/main/web/node_modules exists; run npm install in src/main/web.
• DB issues: H2 in-memory resets on restart. If Liquibase fails, run mvn clean and restart.