deploy-staging.yml

name: Deploy Staging

on:
  workflow_dispatch:

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

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    environment: staging
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2 # needed to get previous tag for rollback

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=sha,format=long

      # In a real scenario, this would authenticate to a registry
      # For Phase 0, we just build the image locally and tag it with the SHA
      - name: Build Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          load: true # load into local docker daemon
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # We simulate the staging deployment locally on the GitHub Runner 
      # since there's no remote target specified yet.
      - name: Deploy to Staging (Runner)
        env:
          DATABASE_URL: ${{ secrets.STAGING_DATABASE_URL || 'postgresql://learnault:staging_password@localhost:5432/learnault_staging?schema=public' }}
          JWT_SECRET: ${{ secrets.STAGING_JWT_SECRET || 'fallback-staging-secret' }}
        run: |
          echo "Actor: ${{ github.actor }}"
          echo "Digest/Tag: ${{ steps.meta.outputs.version }}"
          
          # We need to run the postgres db as a mock for staging
          docker compose -f docker-compose.staging.yml up -d db
          sleep 10 # Wait for db to initialize
          
          # Run deployment
          ./scripts/deploy-staging.sh ${{ steps.meta.outputs.version }}

      - name: Run Smoke Tests
        run: ./scripts/smoke-test.sh

      - name: Handle Failure & Rollback
        if: failure()
        run: |
          echo "Deployment or Smoke Tests failed. Initiating Rollback..."
          
          # Get the previous commit SHA to rollback to
          PREV_SHA=$(git rev-parse HEAD^)
          PREV_TAG="sha-$PREV_SHA"
          
          echo "Rolling back to tag: $PREV_TAG"
          
          # Since this is a CI mock, we just run the rollback script
          # In reality, this tag would be pulled from the registry
          # We'll just build it to simulate
          docker build -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$PREV_TAG .
          
          ./scripts/rollback-staging.sh ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$PREV_TAG