# Railway Deployment Workflow Template
# ======================================
#
# This template can be copied to any BlackRoad repository that deploys to Railway.
#
# How to use:
# -----------
# 1. Copy this file to .github/workflows/railway-deploy.yml in your repo
# 2. Update the service name and environment variables as needed
# 3. Add required GitHub secrets:
#    - RAILWAY_TOKEN (get from: railway tokens create)
#    - RAILWAY_SERVICE_ID (optional, for specific service targeting)
# 4. Push to main branch to trigger deployment
#
# Required GitHub Secrets:
# -----------------------
# RAILWAY_TOKEN - Railway API token for CLI authentication
#
# Optional GitHub Secrets/Variables:
# ---------------------------------
# RAILWAY_SERVICE_ID - Specific Railway service ID to deploy
# SENTRY_DSN - Sentry error monitoring DSN
#
# Customization:
# -------------
# - Change trigger branches (currently: main)
# - Add/remove build steps
# - Configure environment-specific variables
# - Add post-deploy notifications (Slack, Discord, etc.)

name: Deploy to Railway

on:
  push:
    branches:
      - main
    paths-ignore:
      - '**.md'
      - 'docs/**'
      - '.github/**'
      - '!.github/workflows/railway-deploy.yml'

  workflow_dispatch:
    inputs:
      environment:
        description: 'Deployment environment'
        required: true
        type: choice
        options:
          - production
          - staging
        default: 'production'

# Only allow one deployment at a time
concurrency:
  group: railway-deploy-${{ github.ref }}
  cancel-in-progress: false

jobs:
  deploy:
    name: Deploy to Railway
    runs-on: ubuntu-latest
    timeout-minutes: 15

    # Set deployment environment
    environment:
      name: ${{ github.event.inputs.environment || 'production' }}
      url: https://os.blackroad.systems  # Update with your actual URL

    steps:
      # ========================================
      # 1. Checkout code
      # ========================================
      - name: Checkout code
        uses: actions/checkout@v4

      # ========================================
      # 2. Install Railway CLI
      # ========================================
      - name: Install Railway CLI
        run: |
          curl -fsSL https://railway.app/install.sh | sh
          echo "$HOME/.railway/bin" >> $GITHUB_PATH

      - name: Verify Railway installation
        run: railway --version

      # ========================================
      # 3. Set up environment
      # ========================================
      - name: Set up environment variables
        run: |
          echo "RAILWAY_TOKEN=${{ secrets.RAILWAY_TOKEN }}" >> $GITHUB_ENV
          echo "GIT_SHA=${GITHUB_SHA::8}" >> $GITHUB_ENV
          echo "DEPLOY_TIME=$(date -u +'%Y-%m-%d %H:%M:%S UTC')" >> $GITHUB_ENV

      # ========================================
      # 4. Pre-deploy validation (optional)
      # ========================================
      - name: Validate environment variables
        run: |
          if [ -z "${{ secrets.RAILWAY_TOKEN }}" ]; then
            echo "❌ Error: RAILWAY_TOKEN secret is not set"
            exit 1
          fi
          echo "✅ Environment variables validated"

      # ========================================
      # 5. Deploy to Railway
      # ========================================
      - name: Deploy to Railway
        id: deploy
        env:
          RAILWAY_TOKEN: ${{ secrets.RAILWAY_TOKEN }}
        run: |
          echo "🚀 Deploying to Railway..."
          echo "Environment: ${{ github.event.inputs.environment || 'production' }}"
          echo "Commit: ${GITHUB_SHA::8}"
          echo "Branch: ${GITHUB_REF_NAME}"

          # Deploy using Railway CLI
          # If RAILWAY_SERVICE_ID is set, deploy to specific service
          if [ -n "${{ secrets.RAILWAY_SERVICE_ID }}" ]; then
            railway up \
              --service "${{ secrets.RAILWAY_SERVICE_ID }}" \
              --detach
          else
            railway up --detach
          fi

          echo "✅ Deployment initiated"

      # ========================================
      # 6. Wait for deployment and health check
      # ========================================
      - name: Wait for deployment
        id: wait
        env:
          RAILWAY_TOKEN: ${{ secrets.RAILWAY_TOKEN }}
        run: |
          echo "⏳ Waiting for deployment to complete..."

          # Wait up to 5 minutes for deployment
          MAX_WAIT=300
          ELAPSED=0
          INTERVAL=10

          while [ $ELAPSED -lt $MAX_WAIT ]; do
            # Check deployment status (simplified - adjust based on Railway CLI output)
            STATUS=$(railway status --json 2>/dev/null || echo '{"status":"unknown"}')

            echo "Status check at ${ELAPSED}s: Deployment in progress..."

            # Sleep and increment
            sleep $INTERVAL
            ELAPSED=$((ELAPSED + INTERVAL))
          done

          echo "⏰ Deployment wait period completed"

      # ========================================
      # 7. Health check (optional but recommended)
      # ========================================
      - name: Health check
        id: health
        run: |
          echo "🏥 Running health check..."

          # Update with your actual health endpoint
          HEALTH_URL="https://os.blackroad.systems/health"

          # Try health check up to 5 times
          MAX_ATTEMPTS=5
          ATTEMPT=1

          while [ $ATTEMPT -le $MAX_ATTEMPTS ]; do
            echo "Health check attempt $ATTEMPT/$MAX_ATTEMPTS..."

            HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" "$HEALTH_URL" || echo "000")

            if [ "$HTTP_CODE" = "200" ]; then
              echo "✅ Health check passed (HTTP $HTTP_CODE)"
              exit 0
            fi

            echo "⚠️  Health check returned HTTP $HTTP_CODE, retrying..."
            sleep 10
            ATTEMPT=$((ATTEMPT + 1))
          done

          echo "❌ Health check failed after $MAX_ATTEMPTS attempts"
          exit 1

      # ========================================
      # 8. Post-deploy notifications (optional)
      # ========================================
      - name: Notify deployment success
        if: success()
        run: |
          echo "✅ Deployment successful!"
          echo "SHA: ${GITHUB_SHA::8}"
          echo "Time: $(date -u +'%Y-%m-%d %H:%M:%S UTC')"

          # Add Slack/Discord webhook here if needed
          # Example:
          # curl -X POST -H 'Content-type: application/json' \
          #   --data '{"text":"✅ Deployed to Railway: '"${GITHUB_SHA::8}"'"}' \
          #   ${{ secrets.SLACK_WEBHOOK_URL }}

      # ========================================
      # 9. Handle deployment failure
      # ========================================
      - name: Notify deployment failure
        if: failure()
        run: |
          echo "❌ Deployment failed!"
          echo "SHA: ${GITHUB_SHA::8}"
          echo "Check Railway logs for details"

          # Add Slack/Discord webhook here if needed

      # ========================================
      # 10. Send to Sentry (optional)
      # ========================================
      - name: Create Sentry release
        if: success() && vars.SENTRY_DSN != ''
        env:
          SENTRY_AUTH_TOKEN: ${{ secrets.SENTRY_AUTH_TOKEN }}
          SENTRY_ORG: blackroad
          SENTRY_PROJECT: blackroad-os
        run: |
          # Install Sentry CLI
          curl -sL https://sentry.io/get-cli/ | bash

          # Create release
          sentry-cli releases new "${GITHUB_SHA::8}"
          sentry-cli releases set-commits "${GITHUB_SHA::8}" --auto
          sentry-cli releases finalize "${GITHUB_SHA::8}"
          sentry-cli releases deploys "${GITHUB_SHA::8}" new -e production

          echo "✅ Sentry release created"

  # ========================================
  # Optional: Smoke tests after deployment
  # ========================================
  smoke-tests:
    name: Smoke Tests
    runs-on: ubuntu-latest
    needs: deploy
    if: success()

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Run smoke tests
        run: |
          echo "🧪 Running smoke tests..."

          # Basic smoke tests
          BASE_URL="https://os.blackroad.systems"

          # Test 1: Health endpoint
          echo "Test 1: Health endpoint"
          curl -f "$BASE_URL/health" || exit 1

          # Test 2: API documentation
          echo "Test 2: API documentation"
          curl -f "$BASE_URL/api/docs" || exit 1

          # Test 3: Frontend loads
          echo "Test 3: Frontend loads"
          curl -f "$BASE_URL/" || exit 1

          echo "✅ All smoke tests passed"

# ========================================
# Workflow Summary
# ========================================
#
# This workflow:
# 1. Triggers on push to main or manual dispatch
# 2. Installs Railway CLI
# 3. Validates environment
# 4. Deploys to Railway
# 5. Waits for deployment
# 6. Runs health checks
# 7. Sends notifications
# 8. Creates Sentry release (optional)
# 9. Runs smoke tests (optional)
#
# Customize as needed for your specific service!