#!/bin/bash

# =============================================================================
# Ebook Coupon Management System - Startup Script
# =============================================================================
# This script starts the application and automatically initializes the database
# =============================================================================

set -e  # Exit on error

echo "======================================================================"
echo "   EBOOK COUPON MANAGEMENT SYSTEM - STARTUP"
echo "======================================================================"
echo ""

# Colors for output
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_warning() {
    echo -e "${YELLOW}⚠️  $1${NC}"
}

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

# Check if .env file exists
if [ ! -f ".env" ]; then
    print_warning ".env file not found!"
    print_info "Copying .env.example to .env..."
    
    if [ -f ".env.example" ]; then
        cp .env.example .env
        print_success ".env file created from .env.example"
        print_warning "Please update .env with your configuration!"
        echo ""
        read -p "Press Enter to continue or Ctrl+C to exit and configure .env..."
    else
        print_error ".env.example not found! Cannot create .env file."
        exit 1
    fi
fi

# Navigate to admin-backend directory
cd admin-backend

print_info "Checking virtual environment..."

# Check if virtual environment exists
if [ ! -d "../.venv" ]; then
    print_warning "Virtual environment not found. Creating one..."
    cd ..
    python3 -m venv .venv
    print_success "Virtual environment created"
    cd admin-backend
fi

# Activate virtual environment
print_info "Activating virtual environment..."
source ../.venv/bin/activate
print_success "Virtual environment activated"

# Install/update requirements
print_info "Installing/updating dependencies..."
pip install -q --upgrade pip
pip install -q -r ../requirements.txt
print_success "Dependencies installed"

echo ""
echo "======================================================================"
print_info "Starting application server..."
print_info "The database will be automatically initialized on startup:"
print_info "  - Tables will be created if they don't exist"
print_info "  - Admin user will be created if none exists"
echo "======================================================================"
echo ""

# Check if port is already in use
if lsof -Pi :8000 -sTCP:LISTEN -t >/dev/null 2>&1 ; then
    print_warning "Port 8000 is already in use!"
    print_info "Killing existing process..."
    kill -9 $(lsof -t -i:8000) 2>/dev/null || true
    sleep 2
fi

# Start the server
print_success "Starting uvicorn server on http://0.0.0.0:8000"
echo ""
echo "======================================================================"
print_info "Access the application:"
print_info "  - API: http://localhost:8000"
print_info "  - Health Check: http://localhost:8000/health"
print_info "  - API Docs: http://localhost:8000/docs"
print_info "  - Admin Login: http://localhost:8000/login"
echo "======================================================================"
echo ""
print_info "Default Admin Credentials (from .env):"
print_info "  Username: admin"
print_info "  Password: admin123"
echo "======================================================================"
echo ""

# Start uvicorn (init_db.py will run automatically)
uvicorn main:app --reload --host 0.0.0.0 --port 8000