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# kbcrm Project Guide
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Welcome to the **kbcrm** project! This guide provides an overview of the project's structure, technologies, and development workflow. It is designed to help you understand how to navigate and contribute to this application effectively.
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## 1. Project Overview
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**kbcrm** is a Customer Relationship Management application that features a decoupled architecture with a Python/Flask backend and a TypeScript/Mithril.js frontend. It delegates authentication to an external Identity Provider (Zitadel) using OIDC, while managing local user data and roles via a SQLite database.
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### Key Technologies
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* **Backend:** Python, Flask 2.x, SQLAlchemy (SQLite)
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* **Authentication:** Authlib, Zitadel (IdP)
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* **Production Server:** Waitress
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* **Frontend:** TypeScript, Mithril.js
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* **Infrastructure:** Docker, Nginx
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### Architecture
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The application follows a client-server architecture. The `App_Server` contains the backend API and business logic, serving REST endpoints. The `Client` directory holds the source code for the Single Page Application (SPA), which is built into static JavaScript files. These static files are served by an Nginx server, configured in the `NGINX_Server` directory.
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## 2. Getting Started
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### Prerequisites
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* Python 3.11+
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* Node.js and npm (for building the frontend)
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* Docker and Docker Compose (for containerized deployment/development)
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### Local Development Setup (Backend)
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1. **Create and activate a virtual environment:**
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```bash
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cd App_Server
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python3 -m venv venv
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source venv/bin/activate
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```
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2. **Install dependencies:**
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```bash
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pip install -r root/requirements.txt
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```
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3. **Configuration:**
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Copy the `.env.example` to `.env` (in the project root) and configure your Zitadel credentials and other environment variables.
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4. **Initialize Database:**
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The database schema is initialized using scripts in the application. (Refer to the `checkdb.py` mechanisms for DB migrations).
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5. **Run the application:**
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```bash
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python root/runserver.py
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```
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*Note: The exact command might depend on how `runserver.py` is configured to launch the Flask app.*
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### Local Development Setup (Frontend)
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1. **Install Node dependencies:**
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```bash
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cd Client
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npm install
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```
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2. **Build the client:**
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```bash
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npm run build
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```
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This command compiles TypeScript and uses Rollup to bundle the JavaScript files, placing the output in `NGINX_Server/html/static/`.
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## 3. Project Structure
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* `App_Server/`: Backend application directory.
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* `root/`: Contains the core Python application code.
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* `auth/`: User management and authentication logic.
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* `routes/`: Flask route definitions.
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* `db.py`: Database connection setup.
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* `data/`: SQLite database files.
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* `Client/`: Frontend SPA source code.
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* `Components/`: Mithril.js GUI components.
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* `widgets/`: Reusable UI elements (inputs, buttons, etc.).
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* `models/`: TypeScript data models and API calls.
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* `NGINX_Server/`: Configuration for the Nginx web server.
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* `html/static/`: Contains the compiled CSS and JS files for the frontend.
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* `ai-context/`: Guidelines and rules for AI assistants working on this project.
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* `docker-compose.*.yaml`: Docker compose configurations for different environments.
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## 4. Development Workflow
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### Frontend Development (TypeScript & Mithril.js)
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* **Responsive Design:** Use `w3.css` classes (located in `NGINX_Server/html/static/w3.css`) for layout and responsive design. Wrap view containers with `w3-container w3-auto`.
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* **Theming:** Prefer classes from `app-theme.css` for colors.
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* **Icons:** Use Google Material Icons from the `Google_Symbols.woff2` file.
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* **Mithril.js Components:**
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* When using `m.ClosureComponent`, omit the closure parameter (`() =>`) and access attributes exclusively via the `vnode` in lifecycle hooks (`oninit`, `view`, etc.).
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* Avoid reading `attrs` directly in the closure scope, as they will be stale on redraws.
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* Format long attribute lists cleanly.
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* **API Calls:** Every `m.request` must append `.catch((e) => showServerError(e))` to display server errors globally. Navigation logic (`m.route.set`) should reside in the `.then` block.
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* **Data Models:** Create distinct `.ts` files for data models in `Client/Components/models` (or `Client/Models` as per guidelines). Perform API calls in these files. Edit forms should fetch fresh data by ID on initialization, rather than relying on cached list data.
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* **Build Process:** After editing files in `Client/`, always run `npm run build` (or the specific build command) to update the bundles in `NGINX_Server/html/static/`. *Do not edit files in `Client/tsout/` or the compiled `.js` files in `NGINX_Server`.*
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### Backend Development (Python & Flask)
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* **Project Isolation:** Projects are user-specific. Always filter read and write operations based on `projekt_users`.
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* Use `_get_visible_user_id()` for read endpoints to filter by the current user (admins see all).
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* Use `_require_projekt_access(projekt_id)` before write operations (create/update/delete) to enforce access control. Return a 404 error if access is denied to avoid revealing project existence.
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* **Database Migrations:** Changes to the schema must be handled via `_db_Vxx_xx` functions in `checkdb.py`. **All migrations must be idempotent.** Use `IF NOT EXISTS` for indexes and check for column existence before adding them.
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### Code Style and Conventions
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* **Documentation:** All Python modules (`.py`) and Jinja2 templates (`.html`) must start with a standardized header containing metadata (`Author:`, `Date:`, `Purpose:`, etc.). Python docstrings are used by Sphinx to generate documentation.
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* **Comments:** Write meaningful comments in German.
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## 5. References
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* **Mithril.js Documentation:** https://mithril.js.org/
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* **Flask Documentation:** https://flask.palletsprojects.com/
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* **Authlib Documentation:** https://docs.authlib.org/
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* See the `ai-context/` directory for detailed structural and operational guidelines.
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+2
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@@ -4,7 +4,8 @@ env/
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node_modules/
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tsout/
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kbp_crm*.js
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App_Server/data/
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kbcrm/App_Server/data
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#App_Server/data/
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oidc-test/
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.vibe/
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.vibe-global/
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