name: Build and Push Docker Images

on:
  push:
    branches: [ main ]
    paths:
      - 'build/VERSION'
  
  release:
    types: [ published ]
  
  workflow_dispatch:
    inputs:
      version:
        description: 'Version tag (e.g., 2.0.0)'
        required: true
        default: 'latest'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: selfhst/icons

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      packages: write
    
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
    
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3
    
    - name: Log in to Container Registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Read version from file
      id: version
      run: |
        VERSION=$(cat build/VERSION | tr -d '\n')
        echo "version=$VERSION" >> $GITHUB_OUTPUT
        echo "Version from file: $VERSION"
        
        # Extract semantic version parts
        MAJOR=$(echo $VERSION | cut -d. -f1)
        MINOR=$(echo $VERSION | cut -d. -f1-2)
        
        echo "major_version=$MAJOR" >> $GITHUB_OUTPUT
        echo "minor_version=$MINOR" >> $GITHUB_OUTPUT
        echo "Major: $MAJOR, Minor: $MINOR"
    
    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          # For releases, use the release tag
          type=ref,event=tag
          # For main branch pushes, create semantic version tags
          type=raw,value=${{ steps.version.outputs.version }},enable={{is_default_branch}}
          type=raw,value=${{ steps.version.outputs.major_version }},enable={{is_default_branch}}
          type=raw,value=${{ steps.version.outputs.minor_version }},enable={{is_default_branch}}
          type=raw,value=latest,enable={{is_default_branch}}
        labels: |
          org.opencontainers.image.title=selfh.st/icons
          org.opencontainers.image.description=Self-hosted icon server with custom color support
          org.opencontainers.image.version=${{ steps.version.outputs.version }}
          org.opencontainers.image.source=https://github.com/${{ github.repository }}
    
    - name: Build and push Docker image
      uses: docker/build-push-action@v5
      with:
        context: ./build
        platforms: linux/amd64,linux/arm64,linux/arm/v7
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}
        cache-from: type=gha
        cache-to: type=gha,mode=max

    - name: Output image info
      run: |
        echo "Images built and pushed:"
        echo "${{ steps.meta.outputs.tags }}" | sed 's/^/  - /'
        echo ""
        echo "Supported architectures:"
        echo "  - linux/amd64"
        echo "  - linux/arm64"
        echo "  - linux/arm/v7"