(docs): Update README for clarity, features, and deployment

Rewrite README for clarity, features, architecture, setup, contributing guide

README.md

@@ -1,57 +1,87 @@
 # RideAware Admin Center
 
-This project provides an Admin Center for managing the RideAware subscriber list. It connects to the same SQLite database (`subscribers.db`) used by the landing page app (running on port 5000) and allows an administrator to:
-
-- View all currently subscribed email addresses.
-- Send overview update emails to all subscribers.
-- Unsubscribe emails via the landing page app.
-
-The Admin Center is protected by a login page, and admin credentials (with a salted/hashed password) are stored in the `admin_users` table within the same database.
+This project provides a secure and user-friendly Admin Panel for managing RideAware subscribers and sending update emails. It's designed to work in conjunction with the RideAware landing page application, utilizing a shared database for subscriber management.
 
 ## Features
 
-- **Admin Login:**  
-  Secure login using salted and hashed passwords (via Werkzeug security utilities).
 
-- **Subscriber List:**  
-  View all email addresses currently stored in the `subscribers` table.
+**Secure Admin Authentication:**
 
-- **Email Updates:**  
-  A form for sending update emails (HTML allowed) to the subscriber list using SMTP.
+* Login protected by username/password authentication using Werkzeug's password hashing.
+* Default admin credentials configurable via environment variables.
 
-- **Shared Database:**  
-  Both the landing page app (port 5000) and Admin Center (port 5001) connect to the same `subscribers.db`.
+**Subscriber Management:**
+* View a comprehensive list of all subscribed email addresses.
 
-## Setup & Running
+**Email Marketing:**
+* Compose and send HTML-rich update emails to all subscribers.
+* Supports embedding unsubscribe links in email content for easy opt-out.
+
+**Shared Database:**
+* Utilizes a shared PostgreSQL database with the landing page application for consistent subscriber data.
+
+**Centralized Newsletter Storage:**
+* Storage of newsletter subject and email bodies in the PostgreSQL database
+
+**Logging:**
+* Implemented comprehensive logging throughout the application for better monitoring and debugging.
+
+## Architecture
+
+The Admin Panel is built using Python with the Flask web framework, using the following technologies:
+
+*   **Backend:** Python 3.11+, Flask
+*   **Database:** PostgreSQL
+*   **Template Engine:** Jinja2
+*   **Authentication:** Werkzeug Security
+*   **Email:** SMTP (using `smtplib`)
+*   **Containerization:** Docker
+*   **Configuration:** .env file using `python-dotenv`
+
+## Setup & Deployment
 
 ### Prerequisites
 
-- Docker (for containerized deployment)
-- Python 3.11+ (if running locally without Docker)
-- An SMTP account (e.g., Spacemail) for sending emails
-- A `.env` file with configuration details
+*   Docker (recommended for containerized deployment)
+*   Python 3.11+ (if running locally without Docker)
+*   A PostgreSQL database instance
+*   An SMTP account (e.g., SendGrid, Mailgun) for sending emails
+*   A `.env` file with configuration details
 
 ### .env Configuration
 
-Create a `.env` file in the project root with the following example variables:
+Create a `.env` file in the project root directory with the following environment variables.  Make sure to replace the placeholder values with your actual credentials.
 
 ```env
-# SMTP settings (shared with the landing page app)
-SMTP_SERVER=<email server>
-SMTP_PORT=<email port>
-SMTP_USER=<email username>
-SMTP_PASSWORD=<email password>
+# Flask Application
+SECRET_KEY="YourSecretKeyHere" #Used to sign session cookies
 
-# Database file
-DATABASE_FILE=subscribers.db
+# PostgreSQL Database Configuration
+PG_HOST=localhost
+PG_PORT=5432
+PG_DATABASE=rideaware_db
+PG_USER=rideaware_user
+PG_PASSWORD=rideaware_password
 
 # Admin credentials for the Admin Center
 ADMIN_USERNAME=admin
 ADMIN_PASSWORD="changeme"  # Change this to a secure password
-ADMIN_SECRET_KEY="your_super_secret_key"
+
+# SMTP Email Settings
+SMTP_SERVER=smtp.example.com
+SMTP_PORT=465 #Or another appropriate port
+SMTP_USER=your_email@example.com
+SMTP_PASSWORD=YourEmailPassword
+SENDER_EMAIL=your_email@example.com #Email to send emails from
+BASE_URL="your_site_domain.com" # used for unsubscribe links, example.com not https://
+
+#Used for debugging
+FLASK_DEBUG=1
 ```
 
-### Running with Docker
+### Running with Docker (Recommended)
+
+This is the recommended approach for deploying the RideAware Admin Panel
 
 Building the Docker image:
 ```sh
@@ -63,18 +93,35 @@ Running the container mapping port 5001:
 docker run -p 5001:5001 admin-panel
 ```
 
-The app will be accessible at http://ip-address-here:5001
+The application will be accessible at `http://localhost:5001` or `http://<your_server_ip>:5001`
+
+*Note: When running locally with Docker, ensure the .env file is located at the project root. Alternatively, you can pass the variables in the CLI.*
 
 ### Running locally
-Install the dependencies using **requirements.txt**:
+
+Install Dependencies:
 
 ```sh
 pip install -r requirements.txt
 ```
 
+Set Environment Variables:
+
+Ensure all the environment variables specified in the `.env` configuration section are set in your shell environment. You can source the `.env` file:
+
+
 Then run the admin app:
 ```sh
 python app.py
 ```
 
-The app will be accessible at http://ip-address-here:5001
+The app will be accessible at `http://127.0.0.1:5001`
+
+### Contributing
+
+Contributions to the RideAware Admin Panel are welcome! Please follow these steps:
+
+* Fork the repository.
+* Create a new branch for your feature or bug fix.
+* Make your changes and commit them with descriptive commit messages.
+* Submit a pull request.