Favicon Versioning Guide

name: Deploy Favicons

on:
  push:
    paths:
      - 'public/favicons/**'
      - 'src/assets/favicon-source.svg'
    branches:
      - main

jobs:
  deploy-favicons:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Generate version hash
        id: version
        run: echo "hash=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
      
      - name: Upload to S3 with versioning
        env:
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
        run: |
          aws s3 sync public/favicons/ \
            s3://my-bucket/favicons/ \
            --cache-control "public, max-age=31536000, immutable"
      
      - name: Invalidate CDN cache
        run: |
          aws cloudfront create-invalidation \
            --distribution-id ${{ secrets.CLOUDFRONT_DIST_ID }} \
            --paths "/favicons/*"
      
      - name: Update version file
        run: |
          echo "${{ steps.version.outputs.hash }}" > public/favicon-version.txt
          git config user.name "GitHub Actions"
          git config user.email "actions@github.com"
          git add public/favicon-version.txt
          git commit -m "chore: update favicon version to ${{ steps.version.outputs.hash }}"
          git push

# netlify.toml
[build]
  command = "npm run build"
  publish = "dist"

[build.environment]
  FAVICON_VERSION = "2.0.1"

[[headers]]
  for = "/favicon*.png"
  [headers.values]
    Cache-Control = "public, max-age=31536000, immutable"

[[headers]]
  for = "/apple-touch-icon*.png"
  [headers.values]
    Cache-Control = "public, max-age=31536000, immutable"