name: Deploy to Raspberry Pi

on:
  workflow_run:
    workflows: ["Build and Push Docker Image"]
    types:
      - completed
    branches:
      - production
      - dev
      - preview

jobs:
  deploy:
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    runs-on: self-hosted
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      - name: Set Deployment Variables
        run: |
          if [[ "${{ github.event.workflow_run.head_branch }}" == "production" ]]; then
            echo "DEPLOY_ENV=production" >> $GITHUB_ENV
            echo "PORT=4000" >> $GITHUB_ENV
          elif [[ "${{ github.event.workflow_run.head_branch }}" == "dev" ]]; then
            echo "DEPLOY_ENV=dev" >> $GITHUB_ENV
            echo "PORT=4001" >> $GITHUB_ENV
          elif [[ "${{ github.event.workflow_run.head_branch }}" == "preview" ]]; then
            echo "DEPLOY_ENV=preview" >> $GITHUB_ENV
            echo "PORT=4002" >> $GITHUB_ENV
          fi

      - name: Log in to GHCR
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.repository_owner }} --password-stdin

      - name: Pull Docker Image
        run: |
          IMAGE_NAME="ghcr.io/${{ github.repository_owner }}/my-nextjs-app:${{ github.event.workflow_run.head_branch }}"
          IMAGE_NAME=$(echo "$IMAGE_NAME" | tr '[:upper:]' '[:lower:]')
          docker pull "$IMAGE_NAME"
          echo "$IMAGE_NAME" >> $GITHUB_ENV

      - name: Zero-Downtime Deployment
        run: |
          CONTAINER_NAME="nextjs-$DEPLOY_ENV"

          echo "Deploying $CONTAINER_NAME with $IMAGE_NAME"

          if [ "$(docker inspect --format='{{.State.Running}}' "$NEW_CONTAINER_NAME")" = "true" ]; then
            docker stop "$CONTAINER_NAME" || true
            docker rm "$CONTAINER_NAME" || true

            docker run -d --name "$CONTAINER_NAME" -p $PORT:3000 "$IMAGE_NAME"
            echo "Deployment erfolgreich!"
          else
            echo "Neuer Container konnte nicht gestartet werden!"
            docker logs "$CONTAINER_NAME"
            exit 1
          fi