#!/bin/bash
# ============================================
# DocGenie Deployment Helper Script
# ============================================
# Quick deployment script for Railway + RunPod

set -e  # Exit on error

echo "🚀 DocGenie Deployment Helper"
echo "=============================="
echo ""

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Function to print colored messages
print_success() {
    echo -e "${GREEN}✓ $1${NC}"
}

print_error() {
    echo -e "${RED}✗ $1${NC}"
}

print_info() {
    echo -e "${YELLOW}ℹ $1${NC}"
}

# Check prerequisites
echo "Checking prerequisites..."

# Check if Docker is installed
if ! command -v docker &> /dev/null; then
    print_error "Docker is not installed. Please install Docker first."
    exit 1
fi
print_success "Docker installed"

# Check if .env exists
if [ ! -f "api/.env" ]; then
    print_error "api/.env file not found. Please create it first."
    exit 1
fi
print_success "Environment file found"

# Menu
echo ""
echo "Select deployment option:"
echo "1) Build Handwriting Service Docker image"
echo "2) Push Handwriting Service to Docker Hub"
echo "3) Deploy API to Railway"
echo "4) Run local test environment (docker-compose)"
echo "5) Full deployment (Handwriting + API)"
echo "0) Exit"
echo ""
read -p "Enter option (0-5): " option

case $option in
    1)
        echo ""
        print_info "Building Handwriting Service Docker image..."
        
        # Build image
        cd handwriting_service
        docker buildx build --platform linux/amd64 \
            -t docgenie-handwriting:latest \
            --build-arg BUILDKIT_INLINE_CACHE=1 \
            .
        
        print_success "Image built successfully"
        print_info "Tag: docgenie-handwriting:latest"
        ;;
        
    2)
        echo ""
        read -p "Enter your Docker Hub username: " docker_username
        
        print_info "Tagging image for Docker Hub..."
        docker tag docgenie-handwriting:latest ${docker_username}/docgenie-handwriting:latest
        
        print_info "Pushing to Docker Hub..."
        docker push ${docker_username}/docgenie-handwriting:latest
        
        print_success "Image pushed successfully"
        print_info "Deploy this on RunPod: ${docker_username}/docgenie-handwriting:latest"
        ;;
        
    3)
        echo ""
        print_info "Deploying API to Railway..."
        
        # Check if Railway CLI is installed
        if ! command -v railway &> /dev/null; then
            print_error "Railway CLI not installed. Installing..."
            npm i -g @railway/cli
        fi
        
        # Deploy
        railway up
        
        print_success "API deployed to Railway"
        print_info "View logs: railway logs"
        print_info "View URL: railway open"
        ;;
        
    4)
        echo ""
        print_info "Starting local test environment..."
        print_info "This will start: Redis, API, Worker, Handwriting Service"
        
        # Check if GPU is available
        if command -v nvidia-smi &> /dev/null; then
            print_info "GPU detected, using CUDA"
            docker-compose up
        else
            print_info "No GPU detected, using CPU for handwriting service"
            DEVICE=cpu docker-compose up
        fi
        ;;
        
    5)
        echo ""
        print_info "Full deployment starting..."
        
        # Step 1: Build handwriting image
        print_info "Step 1/4: Building Handwriting Service..."
        cd handwriting_service
        docker buildx build --platform linux/amd64 \
            -t docgenie-handwriting:latest \
            --build-arg BUILDKIT_INLINE_CACHE=1 \
            .
        cd ..
        print_success "Handwriting image built"
        
        # Step 2: Push to Docker Hub
        echo ""
        read -p "Enter your Docker Hub username: " docker_username
        print_info "Step 2/4: Pushing to Docker Hub..."
        docker tag docgenie-handwriting:latest ${docker_username}/docgenie-handwriting:latest
        docker push ${docker_username}/docgenie-handwriting:latest
        print_success "Image pushed"
        
        # Step 3: Deploy to RunPod (manual)
        echo ""
        print_info "Step 3/4: Deploy to RunPod (manual step)"
        print_info "1. Go to https://runpod.io → Serverless → New Endpoint"
        print_info "2. Use image: ${docker_username}/docgenie-handwriting:latest"
        print_info "3. Select GPU: RTX 4090 or A40"
        print_info "4. Set port: 8080"
        print_info "5. Set env: DEVICE=cuda"
        read -p "Press Enter when RunPod deployment is complete..."
        
        # Step 4: Get RunPod URL and deploy API
        echo ""
        read -p "Enter your RunPod endpoint URL: " runpod_url
        
        print_info "Step 4/4: Deploying API to Railway..."
        
        # Set HANDWRITING_SERVICE_URL
        export HANDWRITING_SERVICE_URL=$runpod_url
        
        # Deploy to Railway
        if ! command -v railway &> /dev/null; then
            print_error "Railway CLI not installed. Installing..."
            npm i -g @railway/cli
        fi
        
        railway up
        
        print_success "Full deployment complete!"
        echo ""
        print_info "Next steps:"
        print_info "1. Set HANDWRITING_SERVICE_URL in Railway dashboard"
        print_info "2. railway variables set HANDWRITING_SERVICE_URL=$runpod_url"
        print_info "3. Test: curl https://your-domain.up.railway.app/health"
        ;;
        
    0)
        echo "Goodbye!"
        exit 0
        ;;
        
    *)
        print_error "Invalid option"
        exit 1
        ;;
esac

echo ""
print_success "Done!"