//go:build ignore

// build.go
package main

import (
	"bufio"
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
)

type Platform struct {
	OS   string
	Arch string
	Name string // 显示名称
	Ext  string // 文件扩展名（Windows 需要 .exe）
}

var platforms = []Platform{
	{"windows", "amd64", "Windows x86-64", ".exe"},
	{"windows", "386", "Windows x86", ".exe"},
	{"linux", "amd64", "Linux x86-64", ""},
	{"linux", "arm64", "Linux ARM64", ""},
	{"linux", "armv7", "Linux ARMv7", ""},
}

const (
	Version   = "1.0.0"
	BuildTime = "2026-07-24"
	Binary    = "frpc-console"
)

func main() {
	// 解析命令行参数
	if len(os.Args) > 1 {
		target := os.Args[1]
		if target == "all" {
			buildAll()
			return
		}
		if target == "clean" {
			clean()
			return
		}
		if target == "list" {
			listPlatforms()
			return
		}
		// 尝试匹配平台
		for _, p := range platforms {
			if target == p.OS+"/"+p.Arch {
				build(p, false)
				return
			}
		}
		fmt.Println("❌ 不支持的平台:", target)
		fmt.Println("   可用: windows/amd64, windows/386, linux/amd64, linux/arm64, linux/armv7")
		fmt.Println("   或: all, list, clean")
		return
	}

	// 交互式菜单
	interactiveMenu()
}

func listPlatforms() {
	fmt.Println("可用平台:")
	for i, p := range platforms {
		fmt.Printf("  %d. %s (%s/%s)\n", i+1, p.Name, p.OS, p.Arch)
	}
}

func interactiveMenu() {
	fmt.Println("========================================")
	fmt.Println("  frpc-console 多平台构建工具 v" + Version)
	fmt.Println("========================================")
	fmt.Println()

	for i, p := range platforms {
		fmt.Printf("  %d. %s (%s/%s)\n", i+1, p.Name, p.OS, p.Arch)
	}
	fmt.Println("  a. 全部构建")
	fmt.Println("  c. 清理构建产物")
	fmt.Println("  q. 退出")
	fmt.Println()

	reader := bufio.NewReader(os.Stdin)
	fmt.Print("请选择: ")

	input, _ := reader.ReadString('\n')
	input = strings.TrimSpace(strings.ToLower(input))

	switch input {
	case "q":
		fmt.Println("已退出")
		return
	case "c":
		clean()
		return
	case "a":
		buildAll()
		return
	default:
		// 尝试匹配数字
		var idx int
		if n, err := fmt.Sscanf(input, "%d", &idx); n == 1 && err == nil && idx >= 1 && idx <= len(platforms) {
			build(platforms[idx-1], false)
			return
		}
		fmt.Println("❌ 无效选择")
		interactiveMenu()
	}
}

func buildAll() {
	for _, p := range platforms {
		build(p, true)
	}
	fmt.Println("\n✅ 全部构建完成！产物位于 build/ 目录")
}

func build(p Platform, silent bool) {
	if !silent {
		fmt.Printf("🔨 构建 %s (%s/%s)...\n", p.Name, p.OS, p.Arch)
	}

	outDir := "./build"
	if err := os.MkdirAll(outDir, 0755); err != nil {
		fmt.Printf("❌ 创建目录失败: %v\n", err)
		return
	}

	outName := Binary + "-" + p.OS + "-" + p.Arch + p.Ext
	outPath := filepath.Join(outDir, outName)

	// 构建命令
	cmd := exec.Command("go.exe", "build",
		"-ldflags=-s -w -X main.version="+Version,
		"-o", outPath,
		".",
	)
	cmd.Env = append(os.Environ(),
		"GOOS="+p.OS,
		"GOARCH="+p.Arch,
		"CGO_ENABLED=0", // 禁用 CGO，保证静态编译
	)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr

	if err := cmd.Run(); err != nil {
		fmt.Printf("❌ 构建失败: %v\n", err)
		return
	}

	if !silent {
		fmt.Printf("✅ 构建完成: %s\n", outPath)
		// 显示文件大小
		if info, err := os.Stat(outPath); err == nil {
			size := float64(info.Size()) / 1024 / 1024
			fmt.Printf("   📦 %.2f MB\n", size)
		}
	}

	// 打包（仅单平台构建时自动打包）
	if !silent {
		packageBinary(outPath, p)
	}
}

func packageBinary(binPath string, p Platform) {
	base := strings.TrimSuffix(filepath.Base(binPath), p.Ext)
	dir := filepath.Dir(binPath)

	if p.Ext == ".exe" {
		// Windows: zip
		zipName := filepath.Join(dir, base+".zip")
		cmd := exec.Command("zip", "-j", zipName, binPath)
		if err := cmd.Run(); err == nil {
			fmt.Printf("   📦 已打包: %s\n", zipName)
		}
	} else {
		// Linux/macOS: tar.gz
		tarName := filepath.Join(dir, base+".tar.gz")
		cmd := exec.Command("tar", "-czf", tarName, "-C", dir, filepath.Base(binPath))
		if err := cmd.Run(); err == nil {
			fmt.Printf("   📦 已打包: %s\n", tarName)
		}
	}
}

func clean() {
	fmt.Println("🧹 清理构建产物...")
	if err := os.RemoveAll("./build"); err != nil {
		fmt.Printf("❌ 清理失败: %v\n", err)
		return
	}
	fmt.Println("✅ 清理完成")
}