#!/bin/bash

# n8n 演示模式启动脚本 - 完全跳过设置
# 仅用于演示和测试

set -e

# 颜色定义
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

# 打印函数
print_info() { echo -e "${BLUE}[信息]${NC} $1"; }
print_success() { echo -e "${GREEN}[成功]${NC} $1"; }
print_warning() { echo -e "${YELLOW}[警告]${NC} $1"; }
print_error() { echo -e "${RED}[错误]${NC} $1"; }

# 获取局域网IP
get_lan_ip() {
    if [[ "$OSTYPE" == "darwin"* ]]; then
        ifconfig | grep "inet " | grep -v 127.0.0.1 | head -1 | awk '{print $2}'
    else
        hostname -I | awk '{print $1}'
    fi
}

# 停止现有进程
stop_existing() {
    print_info "正在停止现有的 n8n 进程..."
    pkill -f "n8n" 2>/dev/null || true
    pkill -f "pnpm" 2>/dev/null || true
    sleep 2
    print_success "已清理现有进程"
}

# 创建预配置的数据库
setup_demo_database() {
    print_info "设置演示数据库..."
    
    # 备份现有数据库
    if [ -f "$HOME/.n8n/database.sqlite" ]; then
        cp "$HOME/.n8n/database.sqlite" "$HOME/.n8n/database.sqlite.backup.$(date +%Y%m%d%H%M%S)"
        print_info "已备份现有数据库"
    fi
    
    # 创建配置文件
    mkdir -p "$HOME/.n8n"
    
    # 创建一个已初始化的配置
    cat > "$HOME/.n8n/config" << 'EOF'
{
  "instanceId": "demo-instance",
  "version": "1.109.2",
  "isNpmAvailable": false,
  "skipOwnerSetup": true
}
EOF
    
    print_success "演示配置已创建"
}

# 主函数
main() {
    echo -e "${BLUE}╔════════════════════════════════════════╗${NC}"
    echo -e "${BLUE}║       n8n 演示模式启动脚本            ║${NC}"
    echo -e "${BLUE}╚════════════════════════════════════════╝${NC}"
    echo
    
    # 切换到n8n目录
    cd "$(dirname "$0")"
    
    # 停止现有进程
    stop_existing
    
    # 设置演示数据库
    setup_demo_database
    
    # 获取IP地址
    LAN_IP=$(get_lan_ip)
    if [ -z "$LAN_IP" ]; then
        print_error "无法获取局域网IP地址"
        exit 1
    fi
    
    print_success "检测到局域网IP: $LAN_IP"
    
    # 设置环境变量 - 演示模式
    print_info "配置演示模式环境变量..."
    
    # 基础配置
    export N8N_DEFAULT_LOCALE=zh-CN
    export N8N_HOST=0.0.0.0
    export N8N_PORT=5678
    export N8N_LOG_LEVEL=error  # 只显示错误，减少日志
    
    # URL配置
    export N8N_EDITOR_BASE_URL="http://${LAN_IP}:5678"
    export WEBHOOK_URL="http://${LAN_IP}:5678"
    export N8N_PROTOCOL=http
    
    # 完全跳过认证和设置
    export N8N_BASIC_AUTH_ACTIVE=false
    export N8N_AUTH_EXCLUDE_ENDPOINTS="/**"
    export N8N_USER_MANAGEMENT_DISABLED=true
    export N8N_SKIP_OWNER_SETUP=true
    export N8N_DEPLOYMENT_TYPE=demo
    export N8N_PUBLIC_API_DISABLED=false
    export N8N_PUBLIC_API_ENDPOINT="http://${LAN_IP}:5678/api"
    
    # Cookie和Session配置 - 最宽松
    export N8N_SECURE_COOKIE=false
    export N8N_SESSION_COOKIE_SAME_SITE=none
    export N8N_SESSION_COOKIE_SECURE=false
    export N8N_SESSION_COOKIE_DOMAIN=""
    
    # CORS配置 - 允许所有
    export N8N_CORS_ENABLED=true
    export N8N_CORS_ORIGINS="*"
    export N8N_CORS_ALLOW_HEADERS="*"
    export N8N_CORS_ALLOW_METHODS="*"
    export N8N_CORS_ALLOW_CREDENTIALS=true
    
    # WebSocket配置
    export N8N_PUSH_BACKEND=websocket
    
    # 性能优化
    export N8N_RUNNERS_ENABLED=true
    export N8N_BLOCK_ENV_ACCESS_IN_NODE=false
    export DB_SQLITE_POOL_SIZE=10
    export N8N_WORKFLOW_TAGS_DISABLED=false
    export N8N_PERSONALIZATION_ENABLED=false
    export N8N_DIAGNOSTICS_ENABLED=false
    export N8N_VERSION_NOTIFICATIONS_ENABLED=false
    
    # 禁用遥测
    export N8N_DIAGNOSTICS_DISABLED=true
    export N8N_TELEMETRY_DISABLED=true
    
    print_success "演示环境变量配置完成"
    
    # 创建演示配置文件
    cat > .env.demo << EOF
# n8n 演示模式配置
N8N_DEFAULT_LOCALE=zh-CN
N8N_HOST=0.0.0.0
N8N_PORT=5678
N8N_EDITOR_BASE_URL=http://${LAN_IP}:5678
WEBHOOK_URL=http://${LAN_IP}:5678
N8N_PROTOCOL=http

# 跳过所有认证和设置
N8N_BASIC_AUTH_ACTIVE=false
N8N_AUTH_EXCLUDE_ENDPOINTS=/**
N8N_USER_MANAGEMENT_DISABLED=true
N8N_SKIP_OWNER_SETUP=true

# CORS配置
N8N_CORS_ENABLED=true
N8N_CORS_ORIGINS=*
N8N_CORS_ALLOW_CREDENTIALS=true

# 禁用遥测
N8N_DIAGNOSTICS_DISABLED=true
N8N_TELEMETRY_DISABLED=true
EOF
    
    print_info "已生成配置文件 .env.demo"
    
    # 检查构建状态
    if [ ! -d "packages/cli/dist" ]; then
        print_warning "项目需要构建，正在构建..."
        pnpm build > build.log 2>&1 || {
            print_error "构建失败，查看 build.log"
            exit 1
        }
    fi
    
    # 启动n8n
    print_info "正在启动 n8n 演示模式..."
    
    # 创建日志文件
    LOG_FILE="n8n-demo-$(date +%Y%m%d-%H%M%S).log"
    
    # 启动命令（带错误过滤）
    pnpm start 2>&1 | grep -v "401" | grep -v "Unauthorized" | tee "$LOG_FILE" &
    N8N_PID=$!
    
    # 等待启动
    echo -n "等待服务启动"
    for i in {1..30}; do
        if curl -s "http://localhost:5678" >/dev/null 2>&1; then
            break
        fi
        echo -n "."
        sleep 1
    done
    echo
    
    # 检查启动状态
    if curl -s "http://localhost:5678" >/dev/null 2>&1; then
        print_success "n8n 演示模式启动成功！"
        
        echo
        echo -e "${GREEN}╔════════════════════════════════════════╗${NC}"
        echo -e "${GREEN}║        n8n 演示模式                   ║${NC}"
        echo -e "${GREEN}╠════════════════════════════════════════╣${NC}"
        echo -e "${GREEN}║${NC} 🏠 本地访问:"
        echo -e "${GREEN}║${NC}    ${BLUE}http://localhost:5678${NC}"
        echo -e "${GREEN}║${NC}"
        echo -e "${GREEN}║${NC} 🌐 局域网访问:"
        echo -e "${GREEN}║${NC}    ${BLUE}http://${LAN_IP}:5678${NC}"
        echo -e "${GREEN}║${NC}"
        echo -e "${GREEN}║${NC} 📱 移动设备访问:"
        echo -e "${GREEN}║${NC}    ${BLUE}http://${LAN_IP}:5678${NC}"
        echo -e "${GREEN}╠════════════════════════════════════════╣${NC}"
        echo -e "${GREEN}║${NC} ✅ 无需注册或登录"
        echo -e "${GREEN}║${NC} ✅ 直接创建工作流"
        echo -e "${GREEN}║${NC} ✅ 适合演示和测试"
        echo -e "${GREEN}║${NC} ⚠️  仅用于开发环境"
        echo -e "${GREEN}╠════════════════════════════════════════╣${NC}"
        echo -e "${GREEN}║${NC} 进程PID: ${YELLOW}$N8N_PID${NC}"
        echo -e "${GREEN}║${NC} 日志文件: ${YELLOW}$LOG_FILE${NC}"
        echo -e "${GREEN}║${NC} 界面语言: 中文"
        echo -e "${GREEN}╚════════════════════════════════════════╝${NC}"
        echo
        
        print_success "所有设置已完成，无需任何认证即可使用！"
        echo
        print_info "按 Ctrl+C 停止服务"
        
        # 捕获退出信号
        trap 'print_info "正在停止 n8n..."; kill $N8N_PID 2>/dev/null; exit 0' INT
        
        # 保持运行
        wait $N8N_PID
    else
        print_error "n8n 启动失败"
        echo "查看日志: $LOG_FILE"
        tail -20 "$LOG_FILE"
        exit 1
    fi
}

# 运行
main "$@"