name: Build and Push Docker Image

on:
  # Trigger on version tags
  push:
    tags:
      - 'v*.*.*'
  
  # Allow manual triggering
  workflow_dispatch:
    inputs:
      tag:
        description: 'Image tag (e.g., v1.0.0 or latest)'
        required: true
        default: 'latest'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Determine image tag
        id: tag
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            echo "tag=${{ github.event.inputs.tag }}" >> $GITHUB_OUTPUT
          else
            echo "tag=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
          fi

      - name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=ref,event=branch
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Image pushed successfully
        run: |
          echo "✅ Image built and pushed!"
          echo "📦 Image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag }}"
          echo ""
          echo "🚀 Deploy to Kubernetes:"
          echo "kubectl set image deployment/turbovault turbovault=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag }} -n turbovault"