name: CI/CD Pipeline

on:
  push:
    branches: [main]

env:
  REGISTRY: git.fpmoz.sum.ba
  IMAGE: git.fpmoz.sum.ba/${{ github.repository }}

jobs:
  # ── JOB 1: Build i Push Docker image ──────────────────
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout koda
        uses: actions/checkout@v4

      - name: Login u Gitea registry
        run: |
          echo ${{ secrets.REGISTRY_PASS }} | \
            docker login $REGISTRY \
            -u ${{ secrets.REGISTRY_USER }} --password-stdin

      - name: Build i Push image
        run: |
          TAG=${{ github.sha }}
          IMAGE_LC=$(echo "$IMAGE" | tr '[:upper:]' '[:lower:]')

          docker build -t $IMAGE_LC:$TAG -t $IMAGE_LC:latest .
          docker push $IMAGE_LC:$TAG
          docker push $IMAGE_LC:latest

          echo $TAG > tag.txt

      - name: Spremi image tag
        uses: actions/upload-artifact@v3
        with:
          name: image-tag
          path: tag.txt

  # ── JOB 2: Deploy na k3s ───────────────────────────────
  deploy:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Checkout koda
        uses: actions/checkout@v4

      - name: Preuzmi image tag
        uses: actions/download-artifact@v3
        with:
          name: image-tag

      - name: Instaliraj kubectl
        run: |
          curl -LO "https://dl.k8s.io/release/$(curl -sL https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
          chmod +x kubectl
          mv kubectl /usr/local/bin/

      - name: Postavi kubeconfig
        run: |
          mkdir -p ~/.kube
          cat <<'EOF' > ~/.kube/config.base64
          ${{ secrets.KUBE_CONFIG }}
          EOF
          
          
          tr -d '[:space:]' < ~/.kube/config.base64 | base64 -d > ~/.kube/config
          chmod 600 ~/.kube/config

      - name: Update image tag u manifestu
        run: |
          TAG=$(cat tag.txt)
          IMAGE_LC=$(echo "$IMAGE" | tr '[:upper:]' '[:lower:]')
          sed -i "s|image:.*|image: $IMAGE_LC:$TAG|" k8s/deployment.yaml

      - name: Deploy na k3s
        run: |
          kubectl apply -f k8s/ -n student-ivanivso7
          kubectl rollout status deployment/hello-cicd \
            -n student-ivanivso7 --timeout=120s