name: publish-site

on:
  workflow_dispatch:
  push:
    branches:
      - main
    paths:
      - site/**
      - install/**
      - README.md
      - .gitea/workflows/publish-site.yml

jobs:
  deploy-public-site:
    runs-on: self-hosted
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Resolve host and site dir
        shell: bash
        run: |
          set -euo pipefail
          mkdir -p .tmp

          PUBLIC_HOST="${PUBLIC_HOST:-}"
          if [ -z "$PUBLIC_HOST" ]; then
            PUBLIC_HOST="$(hostname -I 2>/dev/null | awk '{print $1}' || true)"
          fi
          if [ -z "$PUBLIC_HOST" ]; then
            PUBLIC_HOST="$(hostname)"
          fi

          SITE_DIR="/tmp/devops-skills-site"
          rm -rf "$SITE_DIR"
          mkdir -p "$SITE_DIR"
          cp -r site/* "$SITE_DIR"/

          echo "PUBLIC_HOST=$PUBLIC_HOST" >> "$GITHUB_ENV"
          echo "SITE_DIR=$SITE_DIR" >> "$GITHUB_ENV"
          echo "SITE_URL=http://${PUBLIC_HOST}:8098/" >> "$GITHUB_ENV"

      - name: Deploy with docker or python fallback
        shell: bash
        run: |
          set -euo pipefail

          if command -v docker >/dev/null 2>&1 && docker info >/dev/null 2>&1; then
            docker rm -f devops-skills-site >/dev/null 2>&1 || true
            docker run -d \
              --name devops-skills-site \
              --restart unless-stopped \
              -p 8098:80 \
              -v "${SITE_DIR}":/usr/share/nginx/html:ro \
              nginx:alpine >/dev/null
            echo "DEPLOY_MODE=docker" >> "$GITHUB_ENV"
            exit 0
          fi

          PY_CMD=""
          if command -v python3 >/dev/null 2>&1; then
            PY_CMD="python3"
          elif command -v python >/dev/null 2>&1; then
            PY_CMD="python"
          else
            echo "Neither docker nor python available on runner."
            exit 1
          fi

          pkill -f "http.server 8098" >/dev/null 2>&1 || true
          nohup "$PY_CMD" -m http.server 8098 --bind 0.0.0.0 --directory "${SITE_DIR}" >/tmp/devops-skills-site.log 2>&1 &
          sleep 2
          echo "DEPLOY_MODE=python-http-server" >> "$GITHUB_ENV"

      - name: Verify local endpoint
        shell: bash
        run: |
          set -euo pipefail
          curl -fsS "http://127.0.0.1:8098/" >/dev/null
          echo "Site deployed"
          echo "Mode: ${DEPLOY_MODE}"
          echo "URL: ${SITE_URL}"

      - name: Output public url
        shell: bash
        run: |
          echo "Public URL: ${SITE_URL}"