package main

import (
	"fmt"
	"os"
	"strings"
)

// 颜色常量
const (
	ColorReset  = "\033[0m"
	ColorRed    = "\033[31m"
	ColorGreen  = "\033[32m"
	ColorYellow = "\033[33m"
	ColorBlue   = "\033[34m"
	ColorPurple = "\033[35m"
	ColorCyan   = "\033[36m"
	ColorWhite  = "\033[37m"
)

// 应用信息
const (
	AppName     = "runlike"
	Version     = "1.0.0"
	Author      = "zfxt"
	Description = "Shows command line necessary to run copy of existing Docker container."
)

// 命令行应用结构
type CLIApp struct {
}

// 打印命令行使用说明
func (app *CLIApp) printUsage() {
	fmt.Printf("Usage: %s [options] [containerName]\n", AppName)
	fmt.Println()
	fmt.Printf("%sDescription:%s\n", ColorGreen, ColorReset)
	fmt.Println()
	fmt.Printf("  %s - %s\n", AppName, Description)
	fmt.Println()
	fmt.Printf("%sOptions:%s\n", ColorGreen, ColorReset)
	fmt.Println()
	fmt.Printf("  %s-h, --help%s     显示此帮助信息\n", ColorYellow, ColorReset)
	fmt.Printf("  %s-v, --version%s  显示版本信息\n", ColorYellow, ColorReset)
	fmt.Println()

}

// 执行子命令
func (app *CLIApp) executeCommand(command string) {
	switch command {
	case "help", "h":
		app.printUsage()
	}
}

func main() {
	// 创建CLI应用实例
	app := &CLIApp{}

	// 检查命令行参数
	if len(os.Args) > 1 {
		arg := strings.ToLower(os.Args[1])

		// 处理全局选项
		switch arg {
		case "--version", "-v":
			fmt.Printf("%s v%s\n", AppName, Version)
			return
		case "--help", "-h":
			app.printUsage()
			return
		default:
			//该参数是容器名称，需要根据容器名称获取容器信息
			containerInfo, err := getContainerCommand(arg)
			if err != nil {
				fmt.Printf("获取容器信息失败: %v\n", err)
				return
			}
			//TODO
			fmt.Println(containerInfo)
		}

		// 处理子命令
		app.executeCommand(arg)
		return
	}

	// 无参数时打印帮助信息
	app.printUsage()
}