package FlyOS

import (
	"os"
	"runtime"
	"strings"

	"gitee.com/flyiot/flylibs/FlyUtils"
	"github.com/shirou/gopsutil/v3/cpu"
	"github.com/shirou/gopsutil/v3/host"
)

// 获取计算机名
func HostName() string {
	hostname, err := os.Hostname()
	if err != nil {
		return ""
	}
	return hostname
}

// 获取计算机唯一ID
func GetComputerId() string {
	str := "cpu_"
	if info, err := cpu.Info(); err == nil {
		for _, cpu := range info {
			str += cpu.VendorID + cpu.ModelName + cpu.Model
		}
	}
	if info, err := host.HostID(); err == nil {
		str += info
	}
	if s1, s2, err := host.Virtualization(); err == nil {
		str += s1 + s2
	}

	str += tryGetCpuChipId()

	str = FlyUtils.MD5(str)
	return str
}

// 获取应用唯一ID，检测包括当前程序的路径和md5
func GetAPPId() string {
	str := GetComputerId()
	str += HostName()
	if self, err := os.Executable(); err == nil {
		str += self
		if m, err := FlyUtils.MD5File(self); err == nil {
			str += m
		}
	}

	str = FlyUtils.MD5(str)
	return str
}

// 尝试获取cpuid，一般用于arm
func tryGetCpuChipId() string {
	res := ""
	if runtime.GOOS == "linux" {
		str := FlyUtils.ReadFile2str("/proc/cpuinfo")
		str = strings.ToLower(str)
		lines := strings.Split(str, "\n")

		for _, line := range lines {
			if strings.HasPrefix(line, "chipid") {
				res += line
				// if index := strings.Index(line, ":"); index > 1 {
				// 	res = line[index+1:]
				// }
			}
			if strings.HasPrefix(line, "serial") {
				res += line
			}
		}
	}

	return res
}