name: Build and Deploy

on:
  push:
    branches:
      - main

env:
  DOCKER_BUILDKIT: 1
  DOCKER_TLS_CERTDIR: ""

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        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: ${{ secrets.REGISTRY_URL }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_PASSWORD }}

      - name: Extract metadata
        id: meta
        run: |
          echo "image=${{ secrets.REGISTRY_URL }}/${{ github.repository }}" >> $GITHUB_OUTPUT
          echo "sha_tag=${{ secrets.REGISTRY_URL }}/${{ github.repository }}:${{ github.sha }}" >> $GITHUB_OUTPUT
          echo "latest_tag=${{ secrets.REGISTRY_URL }}/${{ github.repository }}:latest" >> $GITHUB_OUTPUT

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: k8s/Dockerfile
          push: true
          tags: |
            ${{ steps.meta.outputs.sha_tag }}
            ${{ steps.meta.outputs.latest_tag }}
          cache-from: type=registry,ref=${{ steps.meta.outputs.latest_tag }}
          cache-to: type=inline
          build-args: |
            BUILDKIT_INLINE_CACHE=1

  deploy:
    runs-on: ubuntu-latest
    needs: build
    environment:
      name: production
    steps:
      - name: Set up kubectl
        run: |
          # Verify kubectl is available
          kubectl version --client

      - name: Configure kubectl
        run: |
          # Configure kubectl context
          kubectl config get-contexts
          kubectl config use-context towerops/towerops:home-cluster-agent

      - name: Deploy to Kubernetes
        run: |
          # Set deployment timestamp (ISO 8601 format in UTC)
          DEPLOY_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
          echo "Deploying at $DEPLOY_TIMESTAMP"

          # Deploy new version (migrations run on app start)
          kubectl set image deployment/towerops \
            towerops=${{ secrets.REGISTRY_URL }}/${{ github.repository }}:${{ github.sha }} \
            -n towerops

          kubectl set env deployment/towerops \
            DEPLOY_TIMESTAMP=$DEPLOY_TIMESTAMP \
            -n towerops

          echo "Deployment initiated. Kubernetes will handle rollout asynchronously."