name: Deploy pleno-vue to Hetzner (staging)

on:
  push:
    branches: [master]
  workflow_dispatch:

concurrency:
  group: deploy-pleno-vue
  cancel-in-progress: false

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

jobs:
  test-and-deploy:
    name: Build + Deploy
    runs-on: ubuntu-latest
    timeout-minutes: 25
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Setup Node
        uses: actions/setup-node@v7
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install + Build
        run: |
          npm ci --ignore-scripts
          npm run build

      - name: Setup SSH
        uses: webfactory/ssh-agent@v0.10.0
        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/pleno-vue
            git rev-parse HEAD > /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/pleno-vue
            git fetch origin master
            git reset --hard origin/master
            npm ci --ignore-scripts
            npm run build
            sudo systemctl reload nginx || true
            sudo systemctl reload pleno-vue || true
            echo "Deploy complete: $(git rev-parse --short HEAD)"
          '

      - name: Smoke test
        id: smoke
        continue-on-error: true
        env:
          SMOKE_BASE_URL: ${{ secrets.SMOKE_BASE_URL }}
        run: |
          bash scripts/smoke-test.sh "$SMOKE_BASE_URL"

      - name: Sergii Review Batch smoke test (TRU-96)
        id: smoke_sergii
        continue-on-error: true
        env:
          SMOKE_BASE_URL: ${{ secrets.SMOKE_BASE_URL }}
        run: |
          bash scripts/smoke-test-sergii.sh "$SMOKE_BASE_URL"

      - name: Auto-rollback on smoke failure
        if: steps.smoke.outcome == 'failure' || steps.smoke_sergii.outcome == 'failure'
        run: |
          reason="$([ "${{ steps.smoke.outcome }}" = 'failure' ] && echo 'generic smoke' || echo 'Sergii Review Batch smoke')"
          echo "::error::$reason test failed — rolling back to ${{ steps.pre.outputs.pre_sha }}"
          ssh "$DEPLOY_USER@$DEPLOY_HOST" '
            set -e
            cd /opt/pleno-vue
            git reset --hard ${{ steps.pre.outputs.pre_sha }}
            npm ci --ignore-scripts
            npm run build
            sudo systemctl reload nginx || true
          '

      - name: Post Slack status
        if: always()
        uses: slackapi/slack-github-action@v4.0.0
        with:
          channel-id: ${{ secrets.AI_DAILY_CHANNEL }}
          payload: |
            {
              "text": "${{ job.status == 'success' && '✅' || '❌' }} Deploy *pleno-vue@${{ github.sha[0:7] }}* — ${{ job.status }}\n${{ steps.smoke.outcome == 'failure' && '⚠️ Generic smoke FAILED → auto-rolled back' || steps.smoke_sergii.outcome == 'failure' && '⚠️ Sergii Review Batch smoke FAILED → auto-rolled back' || '✓ Smoke (generic + Sergii) passed' }}"
            }
        env:
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}