package main

import (
	"fmt"
	"os"
	"strings"
	"syscall"

	"hub.gaomia.site/titor/YunShu/pkg/style"
	"hub.gaomia.site/titor/YunShu/pkg/termui"
)

const version = "1.0.0"

func init() {
	kernel32 := syscall.NewLazyDLL("kernel32.dll")
	setConsoleCP := kernel32.NewProc("SetConsoleOutputCP")
	setConsoleCP.Call(65001)
}

func printHelp() {
	fmt.Println()
	fmt.Println(style.Cyan.Render("☁ 云枢·Agent"), style.Dim.Render("v"+version))
	fmt.Println()
	fmt.Println(style.Bold.Render("用法:"))
	fmt.Println("  yunshu [命令] [查询内容]")
	fmt.Println()
	fmt.Println(style.Bold.Render("命令:"))
	fmt.Println("  onboard       交互式初始化配置")
	fmt.Println("  help, -h      显示帮助信息")
	fmt.Println("  version, -v   显示版本号")
	fmt.Println()
	fmt.Println(style.Bold.Render("示例:"))
	fmt.Println("  yunshu \"北京今天天气\"   ", style.Dim.Render("单次天气查询"))
	fmt.Println("  yunshu                 ", style.Dim.Render("启动交互模式"))
	fmt.Println("  yunshu onboard         ", style.Dim.Render("重新初始化配置"))
	fmt.Println()
	fmt.Println(style.Bold.Render("环境变量:"))
	fmt.Println("  LLM_API_KEY     API Key（优先级高于配置文件）")
	fmt.Println("  LLM_ENDPOINT    API 端点")
	fmt.Println("  LLM_MODEL       模型名")
	fmt.Println()
	fmt.Println(style.Bold.Render("配置文件:"), "~/.config/yunshu/config.yaml")
	fmt.Println()
}

func printVersion() {
	fmt.Println("yunshu", version)
}

func main() {
	args := os.Args[1:]

	if len(args) > 0 {
		switch args[0] {
		case "onboard":
			runOnboard()
			return
		case "help", "--help", "-h":
			printHelp()
			return
		case "version", "--version", "-v":
			printVersion()
			return
		default:
			if strings.HasPrefix(args[0], "-") {
				fmt.Fprintln(os.Stderr, style.Red.Render("未知选项: "+args[0]))
				fmt.Fprintln(os.Stderr, "可用命令: onboard, help, version")
				os.Exit(1)
			}
		}
	}

	cfg, err := LoadConfig()
	if err != nil {
		fmt.Fprintln(os.Stderr, style.Red.Render("未找到配置文件。请先运行:"))
		fmt.Fprintln(os.Stderr, "  yunshu onboard")
		os.Exit(1)
	}
	_ = cfg

	GenerateToolsYAML()

	agentPath := SearchFile("agents/weather-agent.md")
	def, err := LoadAgent(agentPath)
	if err != nil {
		fmt.Fprintln(os.Stderr, style.Red.Render("加载 agent 失败: "+err.Error()))
		os.Exit(1)
	}

	if len(args) > 0 {
		ClearSession()
		query := strings.Join(args, " ")
		if err := RunAgent(def, query); err != nil {
			fmt.Fprintln(os.Stderr, style.Red.Render("错误: "+err.Error()))
			os.Exit(1)
		}
		return
	}

	fmt.Println()
	fmt.Println(style.Cyan.Render("☁ 云枢·Agent"), style.Dim.Render("· 天气情报官"))
	fmt.Println(style.Dim.Render("  /exit 退出，// 开头的行不发给 LLM"))
	fmt.Println()
	ClearSession()

	for {
		fmt.Print(style.Cyan.Render("❯ "))
		input := termui.ReadLine()
		input = strings.TrimSpace(input)
		if input == "" {
			continue
		}

		if strings.HasPrefix(input, "//") {
			continue
		}

		switch input {
		case "/exit", "exit", "quit":
			fmt.Println("再见！")
			fmt.Println()
			return
		case "/clear":
			ClearSession()
			fmt.Print("\033[2J\033[H")
			fmt.Println(style.Dim.Render("会话已清空"))
			fmt.Println()
			continue
		case "/help":
			fmt.Println("可用命令:")
			fmt.Println("  /exit   退出")
			fmt.Println("  /clear  清空会话")
			fmt.Println("  /help   显示帮助")
			fmt.Println("  //      不发给 LLM 的注释行")
			fmt.Println()
			continue
		}

		if err := RunAgent(def, input); err != nil {
			fmt.Fprintln(os.Stderr, style.Red.Render("错误: "+err.Error()))
		}
		fmt.Println()
	}
}