update-postcodes.yml

name: Update Postcode Data

on:
  schedule:
    # Run every Sunday at 2 AM UTC
    - cron: '0 2 * * 0'
  workflow_dispatch:  # Allow manual triggering

jobs:
  update-postcodes:
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v4
    
    - name: Install uv
      uses: astral-sh/setup-uv@v4
      with:
        version: "latest"
    
    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: "3.12"
    
    - name: Install dependencies
      run: |
        uv sync
    
    - name: Download and process postcode data
      run: |
        uv run python scripts/update_postcodes.py
    
    - name: Check for changes
      id: check_changes
      run: |
        if git diff --quiet app/data/; then
          echo "changes=false" >> $GITHUB_OUTPUT
        else
          echo "changes=true" >> $GITHUB_OUTPUT
        fi
    
    - name: Create Pull Request
      if: steps.check_changes.outputs.changes == 'true'
      uses: peter-evans/create-pull-request@v6
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
        commit-message: 'Update postcode data'
        title: 'Update postcode data'
        body: |
          Automated update of UK postcode data
          
          This PR updates the postcode msgpack files with the latest data from:
          - https://www.doogal.co.uk/UKPostcodes.php
          
          The data has been downloaded, processed, and compressed into msgpack format.
          
          Please review the changes and merge if everything looks good.
        branch: update-postcodes-${{ github.run_number }}
        delete-branch: true
        labels: |
          automated
          data-update