Update README.md

Author: akshay56789

README.md

@@ -6,6 +6,153 @@ Metro Fare Calculator is a simple web application designed to help users calcula
 
 The application is built using the Django framework and is designed to be responsive and easy to use. Users simply select their starting station and ending station from a dropdown menu, and the application calculates the fare based on the distance between the two stations.
 
+I have created CI/CD pipelines to automatically deploy code updates on Github repository to pythonanywhere web application. 
+
+Automating Code Deployment from GitHub to PythonAnywhere
+
+Overview
+
+This document provides a step-by-step guide to automatically deploy code updates from a GitHub repository to a PythonAnywhere web application using GitHub Actions and the PythonAnywhere API.
+
+1. Prerequisites
+
+Before setting up automation, ensure you have:
+
+A PythonAnywhere account (Free or Paid)
+
+A GitHub repository with your project
+
+API access enabled on PythonAnywhere (for Free users)
+
+A web app running on PythonAnywhere
+
+2. Enable API Access on PythonAnywhere
+
+To use the PythonAnywhere API:
+
+Go to PythonAnywhere Account Settings
+
+Scroll to API Token and click "Create API Token" (if not already created).
+
+Copy the API Token, as it will be needed later.
+
+3. Clone Your GitHub Repository on PythonAnywhere
+
+Open the Bash console on PythonAnywhere.
+
+Run the following command to clone your repository:
+
+git clone https://github.com/yourusername/yourrepository.git
+
+Navigate to your project directory:
+
+cd yourrepository
+
+4. Automate Deployment Using GitHub Actions
+
+GitHub Actions will automatically update your PythonAnywhere code whenever you push changes.
+
+Step 1: Add API Token as a GitHub Secret
+
+Go to your GitHub repository → Settings → Secrets and variables → Actions
+
+Click "New Repository Secret"
+
+Add the API Token:
+
+Name: PA_API_TOKEN
+
+Value: Paste your PythonAnywhere API token
+
+Click "Save".
+
+Step 2: Create a GitHub Actions Workflow
+
+In your GitHub repository, create a file:
+📄 .github/workflows/deploy.yml
+
+name: Deploy to PythonAnywhere
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Update code on PythonAnywhere
+      run: |
+        curl -s -X POST \
+        "https://www.pythonanywhere.com/api/v0/user/${{ secrets.PA_USERNAME }}/consoles/38366532/send_input/" \
+        -H "Authorization: Token ${{ secrets.PA_API_TOKEN }}" \
+        -d '{"input": "git pull origin master\n"}' \
+        -H "Content-Type: application/json"
+
+    - name: Reload PythonAnywhere Web App
+      run: |
+        curl -s -X POST \
+        "https://www.pythonanywhere.com/api/v0/user/${{ secrets.PA_USERNAME }}/webapps/${{ secrets.PA_USERNAME }}.pythonanywhere.com/reload/" \
+        -H "Authorization: Token ${{ secrets.PA_API_TOKEN }}" 
+        
+Step 3: Modify the Workflow File
+
+Replace your_username with your PythonAnywhere username.
+
+Replace yourrepository with your GitHub repository name.
+
+Replace your_console_id (Find it by listing consoles via API: https://www.pythonanywhere.com/api/v0/user/your_username/consoles/).
+
+Ensure the correct branch (main) is specified in the workflow.
+
+5. Testing the Deployment
+
+Push a change to your GitHub repository.
+
+Go to GitHub → Actions and verify the workflow execution.
+
+If successful, check your PythonAnywhere project for the updated code.
+
+The web app will automatically reload after deployment.
+
+6. Manual Deployment (If Needed)
+
+If GitHub Actions is not used, you can manually pull updates:
+
+cd yourrepository
+git pull origin main
+
+To reload the web app manually:
+
+touch /var/www/your_username_pythonanywhere_com_wsgi.py
+
+7. Troubleshooting
+
+Issue
+
+Solution
+
+Authentication error
+
+Ensure the API token is correctly added in GitHub Secrets.
+
+Changes not reflecting
+
+Verify git pull works in the PythonAnywhere console.
+
+Console ID issue
+
+Use API to list active consoles and find the correct console_id.
+
+Conclusion
+
+This guide helps automate deployment from GitHub to PythonAnywhere using API calls. Once set up, every push to GitHub updates the PythonAnywhere project automatically and reloads the web app. 🚀
+
 ![Metro Fare - Google Chrome 19-04-2023 20_39_29 (2)](https://user-images.githubusercontent.com/130206125/233120574-f736e375-7014-452c-b1e9-cc00664972f8.png)
 
 ![Screenshot (40)](https://user-images.githubusercontent.com/130206125/233118575-af100009-d9e5-47f9-8d16-b4e9e46a37f9.png)