name: Deploy to Hetzner (staging)

on:
  push:
    branches: [master]
  workflow_dispatch:
    inputs:
      reason:
        description: 'Reason for manual deploy'
        required: false
        default: 'manual'

concurrency:
  group: deploy-${{ github.repository }}
  cancel-in-progress: false

env:
  DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
  DEPLOY_USER: ${{ secrets.DEPLOY_USER }}

jobs:
  test-and-deploy:
    name: CI + Deploy
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Show commit info
        run: |
          echo "Repo: ${{ github.repository }}"
          echo "Branch: ${{ github.ref }}"
          echo "Commit: ${{ github.sha }}"
          echo "Actor: ${{ github.actor }}"

      # === CI (phpunit / vitest) runs here via repo's existing CI config ===
      # (Most of our repos already have a "Required CI" check; this section
      # would invoke that. If your repo doesn't have a CI workflow, the
      # required-check on the branch will block this workflow's deploy step.)

      - name: Setup SSH
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ secrets.DEPLOY_SSH_KEY }}

      - name: Add host key
        run: |
          mkdir -p ~/.ssh
          ssh-keyscan -H "$DEPLOY_HOST" >> ~/.ssh/known_hosts 2>/dev/null

      - name: Pre-deploy snapshot
        id: pre
        run: |
          ssh "$DEPLOY_USER@$DEPLOY_HOST" '
            set -e
            cd /opt/${{ github.event.repository.name }}
            git rev-parse HEAD > /tmp/last_deploy_sha
            echo "PRE_SHA=$(cat /tmp/last_deploy_sha)"
            echo "pre_sha=$(cat /tmp/last_deploy_sha)" >> $GITHUB_OUTPUT
          '

      - name: Deploy
        id: deploy
        run: |
          ssh "$DEPLOY_USER@$DEPLOY_HOST" '
            set -e
            cd /opt/${{ github.event.repository.name }}
            git fetch origin master
            git reset --hard origin/master
            # PHP repos: composer install + clear cache
            if [ -f composer.json ]; then
              composer install --no-dev --optimize-autoloader --no-interaction
              php artisan cache:clear || true
              php artisan config:cache || true
              # Restart php-fpm if used
              sudo systemctl reload php8.2-fpm || true
            fi
            # Node repos: npm ci + build
            if [ -f package.json ]; then
              npm ci --ignore-scripts
              npm run build
              # Restart node service
              sudo systemctl reload pleno-vue || sudo systemctl reload nginx || true
            fi
            # Restart generic services
            sudo systemctl reload nginx || true
            echo "Deploy complete: $(git rev-parse --short HEAD)"
          '

      - name: Smoke test
        id: smoke
        continue-on-error: true
        run: |
          chmod +x scripts/smoke-test.sh
          ./scripts/smoke-test.sh

      - name: Auto-rollback on smoke failure
        if: steps.smoke.outcome == 'failure'
        run: |
          echo "::error::Smoke test failed — rolling back to ${{ steps.pre.outputs.pre_sha }}"
          ssh "$DEPLOY_USER@$DEPLOY_HOST" '
            set -e
            cd /opt/${{ github.event.repository.name }}
            git reset --hard ${{ steps.pre.outputs.pre_sha }}
            if [ -f composer.json ]; then
              composer install --no-dev --optimize-autoloader --no-interaction
              sudo systemctl reload php8.2-fpm || true
            fi
            if [ -f package.json ]; then
              npm ci --ignore-scripts
              npm run build
              sudo systemctl reload nginx || true
            fi
          '

      - name: Post Slack status
        if: always()
        uses: slackapi/slack-github-action@v1.27.0
        with:
          channel-id: ${{ secrets.AI_DAILY_CHANNEL }}
          payload: |
            {
              "text": "${{ job.status == 'success' && '✅' || '❌' }} Deploy *${{ github.repository }}@${{ github.sha[0:7] }}* — ${{ job.status }}\n${{ steps.smoke.outcome == 'failure' && '⚠️ Auto-rolled back' || '✓ Smoke test passed' }}"
            }
        env:
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}

      - name: Update Linear issue
        if: success() && steps.deploy.outcome == 'success'
        run: |
          # Find Linear issues in this commit's history and post a comment
          # (uses GitHub's auto-link: if PR body contains "TRU-123" it auto-links)
          # We skip this here; the OpenClaw cron `f26dfd83` handles Linear updates.
          echo "Deploy notification will be picked up by OpenClaw cron."