#!/usr/bin/env bash
# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# SPDX-License-Identifier: Apache-2.0
# Deploy via Firebase Hosting + Cloud Run
# ========================================
#
# This script:
# 1. Deploys the Genkit FastAPI app to Cloud Run
# 2. Creates a firebase.json with rewrites that proxy all traffic
# from Firebase Hosting to the Cloud Run service
# 3. Deploys Firebase Hosting
#
# The result is a Firebase-hosted URL (e.g. https://project.web.app)
# that proxies API requests to your Cloud Run-deployed FastAPI app.
#
# This is the recommended workaround for Python Genkit apps since
# firebase-functions-python does not yet support onCallGenkit.
#
# Prerequisites:
# - gcloud CLI installed and authenticated
# - firebase CLI installed (npm install -g firebase-tools)
# - GEMINI_API_KEY set in your environment
# - A Firebase project linked to a GCP project
#
# Usage:
# ./deploy_firebase_hosting.sh --project=my-project
# ./deploy_firebase_hosting.sh --project=my-project --region=europe-west1
set -euo pipefail
cd "$(dirname "$0")"
SERVICE_NAME="genkit-asgi"
REGION="${REGION:-us-central1}"
PROJECT=""
# Parse arguments.
for arg in "$@"; do
case "$arg" in
--project=*) PROJECT="${arg#*=}" ;;
--region=*) REGION="${arg#*=}" ;;
--help|-h)
echo "Usage: ./deploy_firebase_hosting.sh --project=PROJECT [--region=REGION]"
echo ""
echo "Environment variables:"
echo " GEMINI_API_KEY Required. Your Gemini API key."
echo " REGION Cloud Run region (default: us-central1)."
echo ""
echo "Options:"
echo " --project=ID Firebase/GCP project ID (required)."
echo " --region=REGION Cloud Run region."
exit 0
;;
esac
done
# Validate required inputs.
if [[ -z "$PROJECT" ]]; then
echo "ERROR: --project is required."
echo "Usage: ./deploy_firebase_hosting.sh --project=my-project"
exit 1
fi
# ── Prerequisites ──────────────────────────────────────────────────────
# 1. Check gcloud CLI is installed.
check_gcloud_installed || exit 1
# 2. Check authentication.
check_gcloud_auth || exit 1
# 3. Check GEMINI_API_KEY (interactive prompt if missing).
check_env_var "GEMINI_API_KEY" "https://aistudio.google.com/apikey" || exit 1
# 4. Check for firebase CLI.
if ! command -v firebase &> /dev/null; then
echo -e "${YELLOW}firebase CLI not found.${NC}"
echo "Install it: npm install -g firebase-tools"
exit 1
fi
echo "🚀 Step 1/2: Deploying ${SERVICE_NAME} to Cloud Run (${REGION})..."
echo ""
# Deploy the app to Cloud Run first.
gcloud run deploy "${SERVICE_NAME}" \
--project="${PROJECT}" \
--source . \
--region "${REGION}" \
--set-env-vars "GEMINI_API_KEY=${GEMINI_API_KEY}" \
--allow-unauthenticated \
--min-instances 0 \
--max-instances 2 \
--memory 512Mi \
--cpu 1
echo ""
echo "🚀 Step 2/2: Deploying Firebase Hosting with Cloud Run proxy..."
echo ""
# Create a minimal firebase.json that proxies all requests to Cloud Run.
# Using a temp directory so we don't pollute the sample with hosting artifacts.
HOSTING_DIR=$(mktemp -d)
trap 'rm -rf "$HOSTING_DIR"' EXIT
mkdir -p "${HOSTING_DIR}/public"
echo '<!DOCTYPE html><html><body>Redirecting...</body></html>' > "${HOSTING_DIR}/public/index.html"
cat > "${HOSTING_DIR}/firebase.json" << EOF
{
"hosting": {
"public": "public",
"rewrites": [
{
"source": "**",
"run": {
"serviceId": "${SERVICE_NAME}",
"region": "${REGION}"
}
}
]
}
}
EOF
firebase deploy \
--only hosting \
--project "${PROJECT}" \
--config "${HOSTING_DIR}/firebase.json" \
--public "${HOSTING_DIR}/public"
echo ""
echo "✅ Deployed! Your app is available at:"
echo " https://${PROJECT}.web.app"
echo ""
echo " Cloud Run: gcloud run services describe ${SERVICE_NAME} --project ${PROJECT} --region ${REGION} --format 'value(status.url)'"
echo " Firebase Hosting: https://${PROJECT}.web.app"
