# Deploy backend (Cloud Run) and frontend (Firebase Hosting) on push.
#
# Auth: WIF (provider + service account email) or legacy JSON key — see docs/CI_GITHUB.md
# Note: `secrets` cannot be used in job-level `if:`; we gate in the first step instead.
name: Deploy

on:
  push:
    branches: [main, master]
  workflow_dispatch:

concurrency:
  group: deploy-${{ github.ref_name }}
  cancel-in-progress: true

env:
  GCP_PROJECT: rapidmk
  GCP_REGION: us-central1
  AR_REPO: us-central1-docker.pkg.dev/rapidmk/cepheus/api
  CLOUD_RUN_SERVICE: cepheus-api
  FIREBASE_PROJECT: rapid-eec43

permissions:
  contents: read
  id-token: write

jobs:
  quality-gate:
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@v4

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: pip
          cache-dependency-path: backend/requirements-ci.txt

      - name: Install backend dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r backend/requirements-ci.txt

      - name: Backend tests
        env:
          CEPHEUS_CLOUD: "1"
          CEPHEUS_API_KEY: test-key
          CEPHEUS_AUTH_DEV_MODE: "1"
          CEPHEUS_CI_STUB_VISION: "1"
        run: python -m pytest backend/tests -q

      - uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: npm
          cache-dependency-path: cepheus/package-lock.json

      - name: Frontend quality checks
        run: |
          cd cepheus
          npm ci
          npm run lint
          npm run test
          npm run build

      - name: Start API for launch gate
        env:
          CEPHEUS_CLOUD: "1"
          CEPHEUS_API_KEY: test-key
          CEPHEUS_AUTH_DEV_MODE: "1"
          CEPHEUS_CI_STUB_VISION: "1"
        run: |
          cd backend && uvicorn main:app --host 127.0.0.1 --port 8765 &
          sleep 5
          curl -sf http://127.0.0.1:8765/health/live

      - name: Launch gate (API smoke)
        env:
          CEPHEUS_API_URL: http://127.0.0.1:8765
          CEPHEUS_API_KEY: test-key
        run: node cepheus/scripts/launch-gate.mjs

  deploy-backend:
    needs: quality-gate
    runs-on: ubuntu-latest
    steps:
      - name: Check backend credentials
        id: creds
        env:
          WIFP: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
          WIFSA: ${{ secrets.GCP_WIF_SERVICE_ACCOUNT }}
          KEY: ${{ secrets.GCP_SA_KEY }}
        run: |
          if [ -n "$WIFP" ] && [ -n "$WIFSA" ]; then
            echo "run=true" >> "$GITHUB_OUTPUT"
            echo "auth=wif" >> "$GITHUB_OUTPUT"
          elif [ -n "$KEY" ]; then
            echo "run=true" >> "$GITHUB_OUTPUT"
            echo "auth=key" >> "$GITHUB_OUTPUT"
          else
            echo "run=false" >> "$GITHUB_OUTPUT"
            echo "skip backend deploy: set GCP WIF or GCP_SA_KEY (see docs/CI_GITHUB.md)" >> "$GITHUB_STEP_SUMMARY"
          fi

      - uses: actions/checkout@v4
        if: steps.creds.outputs.run == 'true'

      - name: Authenticate to Google Cloud (Workload Identity Federation)
        if: steps.creds.outputs.run == 'true' && steps.creds.outputs.auth == 'wif'
        uses: google-github-actions/auth@v2
        with:
          workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
          service_account: ${{ secrets.GCP_WIF_SERVICE_ACCOUNT }}

      - name: Authenticate to Google Cloud (JSON key, legacy)
        if: steps.creds.outputs.run == 'true' && steps.creds.outputs.auth == 'key'
        uses: google-github-actions/auth@v2
        with:
          credentials_json: ${{ secrets.GCP_SA_KEY }}

      - uses: google-github-actions/setup-gcloud@v2
        if: steps.creds.outputs.run == 'true'
        with:
          project_id: ${{ env.GCP_PROJECT }}

      - name: Build and push image
        if: steps.creds.outputs.run == 'true'
        run: |
          set -eux
          gcloud config set project "$GCP_PROJECT"
          gcloud auth configure-docker "${GCP_REGION}-docker.pkg.dev" --quiet
          TAG="${GITHUB_SHA:0:12}"
          echo "IMAGE_TAG=$TAG" >> "$GITHUB_ENV"
          docker build -f backend/Dockerfile.hf -t "${AR_REPO}:${TAG}" -t "${AR_REPO}:latest" ./backend
          docker push "${AR_REPO}:${TAG}"
          docker push "${AR_REPO}:latest"

      - name: Deploy Cloud Run
        if: steps.creds.outputs.run == 'true'
        env:
          CEPHEUS_API_KEY: ${{ secrets.CEPHEUS_API_KEY }}
          CEPHEUS_JWT_SECRET: ${{ secrets.CEPHEUS_JWT_SECRET }}
          CEPHEUS_AUTH_USERS: ${{ secrets.CEPHEUS_AUTH_USERS }}
          CORS_ORIGINS: ${{ secrets.CORS_ORIGINS }}
        run: |
          if [ -z "$CEPHEUS_API_KEY" ] || [ -z "$CEPHEUS_JWT_SECRET" ]; then
            echo "skip Cloud Run deploy: set CEPHEUS_API_KEY and CEPHEUS_JWT_SECRET in GitHub secrets" >> "$GITHUB_STEP_SUMMARY"
            exit 0
          fi
          gcloud run deploy "$CLOUD_RUN_SERVICE" \
            --image "${AR_REPO}:${IMAGE_TAG}" \
            --region "$GCP_REGION" \
            --project "$GCP_PROJECT" \
            --allow-unauthenticated \
            --set-env-vars "^@^CEPHEUS_CLOUD=1@CEPHEUS_PRODUCTION=1@CEPHEUS_AUTH_DEV_MODE=0@CORS_ORIGINS=${CORS_ORIGINS}@CEPHEUS_API_KEY=${CEPHEUS_API_KEY}@CEPHEUS_JWT_SECRET=${CEPHEUS_JWT_SECRET}@CEPHEUS_AUTH_USERS=${CEPHEUS_AUTH_USERS}" \
            --memory 2Gi \
            --cpu 2 \
            --timeout 3600 \
            --max-instances 5

  deploy-frontend:
    needs: quality-gate
    runs-on: ubuntu-latest
    steps:
      - name: Check frontend credentials
        id: creds
        env:
          WIFP: ${{ secrets.FIREBASE_WORKLOAD_IDENTITY_PROVIDER }}
          WIFSA: ${{ secrets.FIREBASE_WIF_SERVICE_ACCOUNT }}
          KEY: ${{ secrets.FIREBASE_SERVICE_ACCOUNT }}
        run: |
          if [ -n "$WIFP" ] && [ -n "$WIFSA" ]; then
            echo "run=true" >> "$GITHUB_OUTPUT"
            echo "auth=wif" >> "$GITHUB_OUTPUT"
          elif [ -n "$KEY" ]; then
            echo "run=true" >> "$GITHUB_OUTPUT"
            echo "auth=key" >> "$GITHUB_OUTPUT"
          else
            echo "run=false" >> "$GITHUB_OUTPUT"
            echo "skip hosting deploy: set Firebase WIF or FIREBASE_SERVICE_ACCOUNT (see docs/CI_GITHUB.md)" >> "$GITHUB_STEP_SUMMARY"
          fi

      - uses: actions/checkout@v4
        if: steps.creds.outputs.run == 'true'

      - name: Authenticate for Firebase (Workload Identity Federation)
        if: steps.creds.outputs.run == 'true' && steps.creds.outputs.auth == 'wif'
        uses: google-github-actions/auth@v2
        with:
          workload_identity_provider: ${{ secrets.FIREBASE_WORKLOAD_IDENTITY_PROVIDER }}
          service_account: ${{ secrets.FIREBASE_WIF_SERVICE_ACCOUNT }}

      - name: Authenticate for Firebase (JSON key, legacy)
        if: steps.creds.outputs.run == 'true' && steps.creds.outputs.auth == 'key'
        uses: google-github-actions/auth@v2
        with:
          credentials_json: ${{ secrets.FIREBASE_SERVICE_ACCOUNT }}

      - uses: actions/setup-node@v4
        if: steps.creds.outputs.run == 'true'
        with:
          node-version: "20"
          cache: npm
          cache-dependency-path: cepheus/package-lock.json

      - name: Install and build
        if: steps.creds.outputs.run == 'true'
        run: |
          set -eux
          cd cepheus
          npm ci
          npm run build

      - name: Deploy to Firebase Hosting
        if: steps.creds.outputs.run == 'true'
        run: npx -y firebase-tools@latest deploy --only hosting --project "$FIREBASE_PROJECT" --non-interactive