name: Deploy to Production

on:
  workflow_dispatch:
    inputs:
      version:
        description: 'Git tag to create for this deploy (e.g. v0.1.2) — not the branch/tag above'
        required: true
        default: 'v0.1.0'
        type: string

jobs:
  deploy:
    name: Build and deploy
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        run: |
          git init
          git remote add origin https://x-access-token:${FORGEJO_TOKEN}@srvr.nu/git/jocke/bilhej.git
          git fetch --depth 1 origin ${GITHUB_SHA}
          git checkout FETCH_HEAD

      - name: Tag version
        run: |
          git tag -d ${{ github.event.inputs.version }} 2>/dev/null || true
          git push origin --delete ${{ github.event.inputs.version }} 2>/dev/null || true
          git tag ${{ github.event.inputs.version }}
          git push origin ${{ github.event.inputs.version }}

      - name: Write production .env
        env:
          POSTGRES_DB: ${{ secrets.POSTGRES_DB }}
          POSTGRES_USER: ${{ secrets.POSTGRES_USER }}
          POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
          JWT_SECRET: ${{ secrets.JWT_SECRET }}
          STRIPE_SECRET_KEY: ${{ secrets.STRIPE_SECRET_KEY }}
          STRIPE_WEBHOOK_SECRET: ${{ secrets.STRIPE_WEBHOOK_SECRET }}
          STRIPE_PRICE_ID: ${{ secrets.STRIPE_PRICE_ID }}
          SWISH_NUMBER: ${{ secrets.SWISH_NUMBER }}
          ADMIN_EMAIL: ${{ secrets.ADMIN_EMAIL }}
          ADMIN_PASSWORD: ${{ secrets.ADMIN_PASSWORD }}
          APP_PUBLIC_BASE_URL: ${{ secrets.APP_PUBLIC_BASE_URL }}
          MAIL_HOST: ${{ secrets.MAIL_HOST }}
          MAIL_PORT: ${{ secrets.MAIL_PORT }}
          MAIL_USERNAME: ${{ secrets.MAIL_USERNAME }}
          MAIL_PASSWORD: ${{ secrets.MAIL_PASSWORD }}
          MAIL_FROM: ${{ secrets.MAIL_FROM }}
          VITE_UMAMI_WEBSITE_ID: ${{ secrets.VITE_UMAMI_WEBSITE_ID }}
        run: |
          # Docker Compose treats $ as variable interpolation in .env files.
          # Escape literal dollar signs (e.g. in passwords) as $$.
          escape() { printf '%s' "$1" | sed 's/\$/$$/g'; }
          {
            printf 'POSTGRES_DB=%s\n' "$(escape "$POSTGRES_DB")"
            printf 'POSTGRES_USER=%s\n' "$(escape "$POSTGRES_USER")"
            printf 'POSTGRES_PASSWORD=%s\n' "$(escape "$POSTGRES_PASSWORD")"
            printf 'JWT_SECRET=%s\n' "$(escape "$JWT_SECRET")"
            printf 'STRIPE_SECRET_KEY=%s\n' "$(escape "$STRIPE_SECRET_KEY")"
            printf 'STRIPE_WEBHOOK_SECRET=%s\n' "$(escape "$STRIPE_WEBHOOK_SECRET")"
            printf 'STRIPE_PRICE_ID=%s\n' "$(escape "$STRIPE_PRICE_ID")"
            printf 'SWISH_NUMBER=%s\n' "$(escape "$SWISH_NUMBER")"
            printf 'ADMIN_EMAIL=%s\n' "$(escape "$ADMIN_EMAIL")"
            printf 'ADMIN_PASSWORD=%s\n' "$(escape "$ADMIN_PASSWORD")"
            printf 'APP_PUBLIC_BASE_URL=%s\n' "$(escape "${APP_PUBLIC_BASE_URL:-https://bilhej.se}")"
            printf 'MAIL_HOST=%s\n' "$(escape "$MAIL_HOST")"
            printf 'MAIL_PORT=%s\n' "$(escape "${MAIL_PORT:-587}")"
            printf 'MAIL_USERNAME=%s\n' "$(escape "$MAIL_USERNAME")"
            printf 'MAIL_PASSWORD=%s\n' "$(escape "$MAIL_PASSWORD")"
            printf 'MAIL_FROM=%s\n' "$(escape "${MAIL_FROM:-noreply@bilhej.se}")"
            printf 'VITE_UMAMI_WEBSITE_ID=%s\n' "$(escape "$VITE_UMAMI_WEBSITE_ID")"
          } > .env

      - name: Build and start production stack
        run: |
          docker compose -p bilhej-prod -f docker-compose.prod.yml down
          docker compose -p bilhej-prod -f docker-compose.prod.yml up --build -d

      - name: Health checks with rollback
        run: |
          echo "Waiting for services to start..."
          sleep 30

          BACKEND_OK=false
          for i in 1 2 3 4 5 6 7 8 9 10; do
            if docker run --rm --network bilhej-prod_default curlimages/curl:8.5.0 \
               -sf http://bilhej-backend-prod:8080/api/payment/swish-info > /dev/null; then
              echo "Backend is healthy"
              BACKEND_OK=true
              break
            fi
            echo "Backend check attempt $i failed, retrying in 5s..."
            sleep 5
          done

          FRONTEND_OK=false
          for i in 1 2 3 4 5; do
            if docker run --rm --network bilhej-prod_default curlimages/curl:8.5.0 \
               -s http://bilhej-frontend-prod/ | grep -qi "bilhej\|Bilhej\|BilHej"; then
              echo "Frontend is serving"
              FRONTEND_OK=true
              break
            fi
            echo "Frontend check attempt $i failed, retrying in 5s..."
            sleep 5
          done

          if [ "$BACKEND_OK" != "true" ] || [ "$FRONTEND_OK" != "true" ]; then
            echo ""
            echo "═══════════════════════════════════════════════════"
            echo "  HEALTH CHECK FAILED — DIAGNOSTICS"
            echo "═══════════════════════════════════════════════════"
            echo ""
            docker compose -p bilhej-prod -f docker-compose.prod.yml ps
            echo ""
            echo "--- Backend logs ---"
            docker logs bilhej-backend-prod 2>&1 | tail -80 || true
            echo ""
            echo "--- Postgres logs ---"
            docker logs bilhej-postgres-prod 2>&1 | tail -30 || true
            echo ""
            echo "═══════════════════════════════════════════════════"
            echo "  ROLLING BACK DEPLOYMENT"
            echo "═══════════════════════════════════════════════════"
            echo ""
            docker compose -p bilhej-prod -f docker-compose.prod.yml down
            echo ""
            echo "Rolled back. Containers stopped. DB volume preserved."
            echo "Read Backend logs above to find the root cause before redeploying."
            exit 1
          fi

      - name: Print deploy status
        run: |
          echo ""
          echo "═══════════════════════════════════════════════════"
          echo "  Deployed ${{ github.event.inputs.version }} to production"
          echo "═══════════════════════════════════════════════════"
          echo ""
          docker compose -p bilhej-prod -f docker-compose.prod.yml ps
          echo ""
          echo "Containers running. Update nginx config on srvr.nu"
          echo "to point bilhej.se to the frontend container."
          echo ""