name: "[Demo] Deploy"

on:
  workflow_dispatch:
    inputs:
      reseed:
        description: "Reseed demo data after deploy"
        type: boolean
        required: false
        default: true

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: torqvoice/torqvoice-demo

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    outputs:
      image: ${{ steps.meta.outputs.image }}
    steps:
      - name: Checkout demo branch
        uses: actions/checkout@v4
        with:
          ref: demo

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

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Get short commit SHA
        id: sha
        run: echo "short=$(git rev-parse --short HEAD)" >> "$GITHUB_OUTPUT"

      - name: Set image reference
        id: meta
        run: echo "image=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}" >> "$GITHUB_OUTPUT"

      - name: Build and push demo image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:demo-${{ steps.sha.outputs.short }}
          build-args: |
            APP_VERSION=demo-${{ steps.sha.outputs.short }}
          cache-from: type=gha,scope=demo
          cache-to: type=gha,scope=demo,mode=min

  deploy:
    needs: build
    runs-on: [self-hosted, Linux, X64, hetzner]

    steps:
      - name: Checkout demo branch
        uses: actions/checkout@v4
        with:
          ref: demo

      - name: Log in to GitHub Container Registry
        run: echo "${{ secrets.GHCR_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Create deployment files
        env:
          VIRTUAL_HOST: "demo.torqvoice.com"
          DATABASE_URL: ${{ secrets.DEMO_DATABASE_URL }}
          BETTER_AUTH_SECRET: ${{ secrets.DEMO_BETTER_AUTH_SECRET }}
          # Optional. Next encrypts what a server action closes over with a key
          # made fresh by every build, so a tab left open across a deploy can
          # no longer be read by the new container. A fixed key keeps those tabs
          # working. 32 random bytes, base64: `openssl rand -base64 32`. Left
          # unset, the build's own key is used, as before.
          NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: ${{ secrets.DEMO_NEXT_SERVER_ACTIONS_ENCRYPTION_KEY }}
          APP_URL: "https://demo.torqvoice.com"
          DEMO_USER_EMAIL: "demo@torqvoice.com"
          DEMO_USER_PASSWORD: "demo"
          DATA_PATH: ${{ secrets.DATA_PATH }}
          POSTHOG_HOST: ${{ secrets.NEXT_PUBLIC_POSTHOG_HOST }}
          POSTHOG_KEY: ${{ secrets.POSTHOG_DEMO_KEY }}
          DEMO_IMAGE: ${{ needs.build.outputs.image }}
        run: |
          mkdir -p $HOME/torqvoice-deploy/demo
          cd $HOME/torqvoice-deploy/demo

          env | grep -E '^(VIRTUAL_HOST|DATA_PATH|DATABASE_URL|BETTER_AUTH_SECRET|APP_URL|DEMO_|POSTHOG_|NEXT_SERVER_ACTIONS_)' > .env

          cat > docker-compose.yml << 'COMPOSE'
          networks:
            proxy:
              external: true
              name: proxy
          services:
            torqvoice-app-demo:
              container_name: torqvoice-app-demo
              image: ${DEMO_IMAGE}:latest
              restart: unless-stopped
              volumes:
                - ${DATA_PATH}/torqvoice_demo_data:/app/data
              expose:
                - "3000"
              environment:
                VIRTUAL_HOST: ${VIRTUAL_HOST}
                VIRTUAL_PORT: "3000"
                LETSENCRYPT_HOST: ${VIRTUAL_HOST}
                DATABASE_URL: ${DATABASE_URL}
                BETTER_AUTH_SECRET: ${BETTER_AUTH_SECRET}
                NEXT_SERVER_ACTIONS_ENCRYPTION_KEY: ${NEXT_SERVER_ACTIONS_ENCRYPTION_KEY}
                NEXT_PUBLIC_APP_URL: ${APP_URL}
                DEMO_MODE: "true"
                DEMO_USER_EMAIL: ${DEMO_USER_EMAIL}
                DEMO_USER_PASSWORD: ${DEMO_USER_PASSWORD}
                POSTHOG_HOST: ${POSTHOG_HOST}
                POSTHOG_KEY: ${POSTHOG_KEY}
              networks:
                - proxy
          COMPOSE

      - name: Ensure data directory permissions
        run: |
          DATA_DIR="${{ secrets.DATA_PATH }}/torqvoice_demo_data"
          mkdir -p "$DATA_DIR"
          docker run --rm -v "$DATA_DIR":/data alpine chown -R 1001:1001 /data

      - name: Check free disk space
        run: |
          MIN_GB=5
          DOCKER_ROOT=$(docker info --format '{{.DockerRootDir}}' 2>/dev/null || echo /var/lib/docker)
          AVAIL_KB=$(df -Pk "$DOCKER_ROOT" | awk 'NR==2 {print $4}')
          AVAIL_GB=$(awk "BEGIN {printf \"%.1f\", $AVAIL_KB/1024/1024}")
          echo "Free space on $DOCKER_ROOT: ${AVAIL_GB} GB (minimum ${MIN_GB} GB)"
          if [ "$AVAIL_KB" -lt $((MIN_GB * 1024 * 1024)) ]; then
            echo "::error::Not enough disk space to pull image: ${AVAIL_GB} GB free, need ${MIN_GB} GB. Aborting deploy."
            exit 1
          fi

      - name: Deploy demo
        run: |
          cd $HOME/torqvoice-deploy/demo
          docker compose up -d --pull always

      - name: Health check
        run: |
          echo "Waiting for demo container to be ready..."
          for i in $(seq 1 12); do
            STATUS=$(docker inspect --format='{{.State.Status}}' torqvoice-app-demo 2>/dev/null || echo "not found")
            if [ "$STATUS" = "running" ]; then
              echo "Container is running!"
              exit 0
            fi
            echo "Status: $STATUS, retrying in 5s..."
            sleep 5
          done
          echo "::error::Container failed to start"
          docker logs torqvoice-app-demo --tail 50
          exit 1

      - name: Seed demo data
        if: ${{ github.event_name == 'push' || inputs.reseed }}
        run: |
          docker exec \
            -e DEMO_USER_EMAIL="demo@torqvoice.com" \
            -e DEMO_USER_PASSWORD="demo" \
            -e DATA_ROOT=/app/data \
            torqvoice-app-demo \
            npx tsx prisma/seed_dummy_data.ts

      - name: Prune old images and build cache
        run: docker image prune -f && docker builder prune -f