name: Build and deploy demo app

on:
  push:
    branches:
      - main
  workflow_dispatch:

env:
  APP_NAME: demo-app
  DEPLOY_DIR: /workspace/apps/demo-app
  REGISTRY: localhost:5001
  IMAGE_NAME: localhost:5001/${{ github.repository }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        run: |
          set -eu
          git clone "http://x-access-token:${GITHUB_TOKEN}@gitea:3000/${GITHUB_REPOSITORY}.git" .
          git checkout "$GITHUB_SHA"

      - name: Show context
        run: |
          set -eu
          echo "repository=${{ github.repository }}"
          echo "sha=${{ github.sha }}"
          docker version

      - name: Build image
        run: |
          set -eu
          docker build \
            --label "org.opencontainers.image.revision=${{ github.sha }}" \
            -t "$IMAGE_NAME:${{ github.sha }}" \
            -t "$IMAGE_NAME:latest" \
            .

      - name: Push image
        run: |
          set -eu
          docker push "$IMAGE_NAME:${{ github.sha }}"
          docker push "$IMAGE_NAME:latest"

      - name: Deploy with local Docker Compose
        run: |
          set -eu
          mkdir -p "$DEPLOY_DIR"
          cat > "$DEPLOY_DIR/docker-compose.yml" <<EOF
          services:
            demo-app:
              image: $IMAGE_NAME:${{ github.sha }}
              container_name: local-demo-app
              env_file:
                - .env
              ports:
                - "8088:8080"
              restart: unless-stopped
          EOF
          if [ ! -f "$DEPLOY_DIR/.env" ]; then
            cat > "$DEPLOY_DIR/.env" <<EOF
          APP_NAME=demo-app
          APP_VERSION=${{ github.sha }}
          PORT=8080
          EOF
          else
            if grep -q '^APP_VERSION=' "$DEPLOY_DIR/.env"; then
              sed -i "s/^APP_VERSION=.*/APP_VERSION=${{ github.sha }}/" "$DEPLOY_DIR/.env"
            else
              printf '\nAPP_VERSION=%s\n' "${{ github.sha }}" >> "$DEPLOY_DIR/.env"
            fi
          fi
          docker compose -f "$DEPLOY_DIR/docker-compose.yml" pull
          docker compose -f "$DEPLOY_DIR/docker-compose.yml" up -d

      - name: Health check
        run: |
          set -eu
          for i in $(seq 1 30); do
            if curl -fsS http://host.docker.internal:8088/health; then
              exit 0
            fi
            sleep 2
          done
          docker compose -f "$DEPLOY_DIR/docker-compose.yml" ps
          docker logs local-demo-app --tail=100 || true
          exit 1