name: Deploy to Cloud Run

# Build the app image and deploy it to Google Cloud Run (Phase B2 of the HF -> GCP move).
#
# MANUAL for now (workflow_dispatch): during the migration the HF Space is still the live
# prod surface (deploy.yml), so we deploy to Cloud Run on demand to test it, and only flip
# the domain at cutover (B4). Once cut over, this can switch to `on: push` to main.
#
# Auth: the `GCP_SA_KEY` secret (gh-deployer SA JSON key) + the `GCP_PROJECT` / `GCP_REGION`
# repo variables. Runtime config comes from GCP Secret Manager (the `run-svc` runtime SA has
# secretAccessor); non-secret flags are plain env vars. HF_TOKEN is a BUILD-time secret only
# (the Dockerfile's parcels bake) — never a runtime var.

on:
  workflow_dispatch:
    inputs:
      allow_unauthenticated:
        description: "Expose the service publicly (the app does its own API-key auth)"
        type: boolean
        default: true

concurrency:
  group: deploy-cloudrun
  cancel-in-progress: false # never interrupt a build/deploy mid-flight

env:
  SERVICE: lawn-app
  REPO: lawn-app # Artifact Registry repo (created in B1)
  GCP_PROJECT: ${{ vars.GCP_PROJECT }}
  GCP_REGION: ${{ vars.GCP_REGION }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    permissions:
      contents: read # checkout
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4

      # The image bakes 3 models (~1.8 GB) + torch + the statewide parcels GPKG (~1.1 GB),
      # so the build needs more free disk than a stock runner has. Reclaim the preinstalled
      # toolchains we don't use before building.
      - name: Free up runner disk
        run: |
          sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc \
            /opt/hostedtoolcache/CodeQL /usr/local/share/boost "$AGENT_TOOLSDIRECTORY" || true
          df -h /

      - name: Authenticate to Google Cloud
        env:
          GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
        run: |
          set -euo pipefail
          if [ -z "${GCP_SA_KEY:-}" ] || [ -z "${GCP_PROJECT:-}" ] || [ -z "${GCP_REGION:-}" ]; then
            echo "::error::Set the GCP_SA_KEY secret and GCP_PROJECT / GCP_REGION variables (see B1)."
            exit 1
          fi
          printf '%s' "$GCP_SA_KEY" > "$RUNNER_TEMP/gcp-key.json"
          gcloud auth activate-service-account --key-file="$RUNNER_TEMP/gcp-key.json"
          gcloud config set project "$GCP_PROJECT" --quiet
          gcloud auth configure-docker "$GCP_REGION-docker.pkg.dev" --quiet
          rm -f "$RUNNER_TEMP/gcp-key.json"

      - name: Build & push image
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }} # build-time only: the Dockerfile's parcels bake
        run: |
          set -euo pipefail
          IMAGE="$GCP_REGION-docker.pkg.dev/$GCP_PROJECT/$REPO/api:${GITHUB_SHA::12}"
          echo "IMAGE=$IMAGE" >> "$GITHUB_ENV"
          # HF_TOKEN is passed as a BuildKit secret (never a layer/env) for the parcels bake;
          # absent (e.g. a fork) -> the Dockerfile skips that bake.
          printf '%s' "${HF_TOKEN:-}" > "$RUNNER_TEMP/hf_token"
          docker buildx build --secret id=HF_TOKEN,src="$RUNNER_TEMP/hf_token" \
            -t "$IMAGE" --load .
          rm -f "$RUNNER_TEMP/hf_token"
          docker push "$IMAGE"

      - name: Deploy to Cloud Run
        run: |
          set -euo pipefail
          AUTH_FLAG="--allow-unauthenticated"
          if [ "${{ inputs.allow_unauthenticated }}" != "true" ]; then AUTH_FLAG="--no-allow-unauthenticated"; fi

          # Every secret the app reads is a Secret Manager shell (created in B2). Mount ONLY the
          # ones the owner has actually filled (an enabled version exists) — unfilled ones stay
          # unset and the app falls back to its defaults, so the service deploys before every
          # secret is populated and each `gcloud secrets versions add` is picked up next deploy.
          SECRET_KEYS="DATABASE_URL ALLOWED_API_KEYS WIDGET_API_KEYS CLERK_SECRET_KEY \
            CLERK_PUBLISHABLE_KEY GOOGLE_MAPS_API_KEY GOOGLE_GEOCODING_API_KEY \
            GOOGLE_PLACES_SERVER_KEY RESEND_API_KEY SENDGRID_API_KEY EMAIL_FROM EMAIL_REPLY_TO \
            LEAD_NOTIFY_EMAIL EMAIL_SENDING_DOMAINS TURNSTILE_SECRET_KEY TURNSTILE_SITE_KEY \
            PLATFORM_ADMIN_EMAILS CORS_ALLOW_ORIGINS R2_BUCKET R2_ACCOUNT_ID R2_ACCESS_KEY_ID \
            R2_SECRET_ACCESS_KEY"
          SECRETS=""
          for k in $SECRET_KEYS; do
            if gcloud secrets versions list "$k" --filter="state=ENABLED" --format='value(name)' 2>/dev/null | grep -q .; then
              SECRETS="${SECRETS:+$SECRETS,}$k=$k:latest"
              echo "  mounting secret: $k"
            fi
          done
          # Deterministic: replace the secret set each deploy (--clear-secrets if none filled yet).
          if [ -n "$SECRETS" ]; then SECRET_FLAG=(--set-secrets "$SECRETS"); else SECRET_FLAG=(--clear-secrets); fi

          gcloud run deploy "$SERVICE" \
            --image "$IMAGE" \
            --region "$GCP_REGION" \
            --service-account "run-svc@$GCP_PROJECT.iam.gserviceaccount.com" \
            --cpu 4 --memory 16Gi \
            --concurrency 1 \
            --timeout 3600 \
            --min-instances 0 --max-instances 4 \
            --no-cpu-throttling \
            --vpc-connector lawn-app-conn --vpc-egress all-traffic \
            --port 8000 \
            $AUTH_FLAG \
            --set-env-vars "LAWN_DATA_DIR=/app/data,WARM_MODEL_ON_STARTUP=1,SAM_RESTRICT=1,ROW_TO_CURB=1,GREEN_RECLAIM=1,LAWN_CASCADE=1,PARCELS_FALLBACK=1" \
            "${SECRET_FLAG[@]}"

          URL=$(gcloud run services describe "$SERVICE" --region "$GCP_REGION" --format='value(status.url)')
          echo "Deployed $SERVICE -> $URL"
          echo "### Cloud Run deployed :rocket:" >> "$GITHUB_STEP_SUMMARY"
          echo "- image: \`$IMAGE\`" >> "$GITHUB_STEP_SUMMARY"
          echo "- url: $URL" >> "$GITHUB_STEP_SUMMARY"