#!/bin/bash

# Script untuk setup environment file
# Usage: ./docker-setup-env.sh [local|production]

set -e

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Default environment
ENVIRONMENT="local"

# Parse arguments
while [[ $# -gt 0 ]]; do
    case $1 in
        local|dev|development)
            ENVIRONMENT="local"
            shift
            ;;
        prod|production)
            ENVIRONMENT="production"
            shift
            ;;
        *)
            echo "Unknown option $1"
            echo "Usage: $0 [local|production]"
            exit 1
            ;;
    esac
done

# Function to print colored output
print_status() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

print_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# Function to backup existing .env
backup_existing_env() {
    if [[ -f .env ]]; then
        local backup_name=".env.backup.$(date +%Y%m%d_%H%M%S)"
        print_status "Backing up existing .env to $backup_name"
        cp .env "$backup_name"
        print_success "Backup created: $backup_name"
    fi
}

# Function to setup local environment
setup_local_env() {
    print_status "Setting up LOCAL development environment..."
    
    if [[ -f docker/env.example.local ]]; then
        backup_existing_env
        cp docker/env.example.local .env
        print_success "✅ Local environment file created!"
        echo ""
        print_status "Local Development Configuration:"
        echo "  🌐 App URL: http://localhost:8000"
        echo "  🗄️  Database: ckb_db (MySQL)"
        echo "  📧 Mail: MailHog (http://localhost:8025)"
        echo "  🔴 Redis: Session & Cache"
        echo "  🐛 Debug: Enabled"
        echo ""
        print_status "Services will be available at:"
        echo "  - Web App: http://localhost:8000"
        echo "  - phpMyAdmin: http://localhost:8080"
        echo "  - MailHog: http://localhost:8025"
        echo ""
        print_success "Ready for local development! Run: ./docker-quick-setup.sh dev"
    else
        print_error "Local environment template not found: docker/env.example.local"
        exit 1
    fi
}

# Function to setup production environment
setup_production_env() {
    print_status "Setting up PRODUCTION environment..."
    
    if [[ -f docker/env.example.production ]]; then
        backup_existing_env
        cp docker/env.example.production .env
        print_success "✅ Production environment file created!"
        echo ""
        print_warning "🚨 SECURITY CONFIGURATION REQUIRED!"
        echo ""
        print_status "You MUST change these settings in .env file:"
        echo "  🔐 DB_PASSWORD=CHANGE_THIS_SECURE_PASSWORD"
        echo "  🔐 DB_ROOT_PASSWORD=CHANGE_THIS_ROOT_PASSWORD"  
        echo "  🔐 REDIS_PASSWORD=CHANGE_THIS_REDIS_PASSWORD"
        echo ""
        print_status "Optional but recommended configurations:"
        echo "  📧 MAIL_HOST, MAIL_USERNAME, MAIL_PASSWORD"
        echo "  ☁️  AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY (for S3)"
        echo "  📡 PUSHER_* settings (for real-time features)"
        echo ""
        print_status "Production Configuration:"
        echo "  🌐 App URL: https://bengkel.digitaloasis.xyz"
        echo "  🗄️  Database: ckb_production (MySQL)"
        echo "  📧 Mail: SMTP (configure in .env)"
        echo "  🔴 Redis: Session, Cache & Queue"
        echo "  🐛 Debug: Disabled"
        echo "  🔒 SSL: Let's Encrypt"
        echo ""
        print_warning "Next steps:"
        echo "1. Edit .env file and change all CHANGE_THIS_* values"
        echo "2. Run: ./docker-deploy-prod.sh deploy"
        echo "3. Run: ./docker-deploy-prod.sh ssl"
    else
        print_error "Production environment template not found: docker/env.example.production"
        exit 1
    fi
}

# Function to show current environment info
show_current_env() {
    if [[ -f .env ]]; then
        print_status "Current Environment Information:"
        echo ""
        
        # Detect environment type
        local app_env=$(grep "^APP_ENV=" .env | cut -d '=' -f2)
        local app_url=$(grep "^APP_URL=" .env | cut -d '=' -f2)
        local app_debug=$(grep "^APP_DEBUG=" .env | cut -d '=' -f2)
        local db_host=$(grep "^DB_HOST=" .env | cut -d '=' -f2)
        local db_name=$(grep "^DB_DATABASE=" .env | cut -d '=' -f2)
        
        echo "  Environment: $app_env"
        echo "  App URL: $app_url"
        echo "  Debug Mode: $app_debug"
        echo "  Database Host: $db_host"
        echo "  Database Name: $db_name"
        echo ""
        
        # Check for security issues in production
        if [[ "$app_env" == "production" ]]; then
            print_status "Security Check:"
            if grep -q "CHANGE_THIS" .env; then
                print_error "❌ Found CHANGE_THIS_* values in production .env!"
                print_warning "Please update all CHANGE_THIS_* values with secure passwords."
            else
                print_success "✅ No CHANGE_THIS_* values found."
            fi
            
            if [[ "$app_debug" == "true" ]]; then
                print_error "❌ Debug mode is enabled in production!"
                print_warning "Set APP_DEBUG=false for production."
            else
                print_success "✅ Debug mode is disabled."
            fi
        fi
    else
        print_status "No .env file found."
    fi
}

# Function to validate environment file
validate_env() {
    if [[ ! -f .env ]]; then
        print_error "No .env file found!"
        return 1
    fi
    
    print_status "Validating environment file..."
    
    # Required variables
    local required_vars=("APP_NAME" "APP_ENV" "APP_URL" "DB_HOST" "DB_DATABASE" "DB_USERNAME" "DB_PASSWORD")
    local missing_vars=()
    
    for var in "${required_vars[@]}"; do
        if ! grep -q "^${var}=" .env; then
            missing_vars+=("$var")
        fi
    done
    
    if [[ ${#missing_vars[@]} -gt 0 ]]; then
        print_error "Missing required environment variables:"
        for var in "${missing_vars[@]}"; do
            echo "  - $var"
        done
        return 1
    fi
    
    print_success "✅ Environment file validation passed!"
    return 0
}

# Main execution
echo "================================================"
print_status "🔧 CKB Environment Setup Helper"
print_status "Target Environment: $ENVIRONMENT"
echo "================================================"
echo ""

case $ENVIRONMENT in
    local)
        setup_local_env
        ;;
    production)
        setup_production_env
        ;;
esac

echo ""
print_status "Environment file setup completed!"
echo ""

# Show current environment info
show_current_env

echo ""
print_status "Available commands:"
echo "  - Show current env: ./docker-setup-env.sh"
echo "  - Setup local: ./docker-setup-env.sh local"
echo "  - Setup production: ./docker-setup-env.sh production"
echo "  - Quick local setup: ./docker-quick-setup.sh dev"
echo "  - Production deploy: ./docker-deploy-prod.sh deploy"