package xruntime

import (
	"github.com/shirou/gopsutil/v3/cpu"
	"github.com/shirou/gopsutil/v3/disk"
	"github.com/shirou/gopsutil/v3/mem"
	"runtime"
	"time"
)

const (
	B  = 1
	KB = 1024 * B
	MB = 1024 * KB
	GB = 1024 * MB
)

type Server struct {
	Os   Os   `json:"os"`
	Cpu  Cpu  `json:"cpu"`
	Ram  Ram  `json:"ram"`
	Disk Disk `json:"disk"`
}

type Os struct {
	GOOS      string `json:"goos"`
	NumCPU    int    `json:"numCpu"`
	Compiler  string `json:"compiler"`
	GoVersion string `json:"goVersion"`
}

type Cpu struct {
	Cpus  []float64 `json:"cpus"`
	Cores int       `json:"cores"`
}

type Ram struct {
	UsedMB  int `json:"usedMb"`
	TotalMB int `json:"totalMb"`
}

type Disk struct {
	UsedMB  int `json:"usedMb"`
	UsedGB  int `json:"usedGb"`
	TotalMB int `json:"totalMb"`
	TotalGB int `json:"totalGb"`
}

//@function: GetOS
//@description: OS信息
//@return: o Os, err error

func GetOS() (o Os) {
	o.GOOS = runtime.GOOS
	o.NumCPU = runtime.NumCPU()
	o.Compiler = runtime.Compiler
	o.GoVersion = runtime.Version()
	return o
}

//@function: GetCPU
//@description: CPU信息
//@return: c Cpu, err error

func GetCPU() (c Cpu, err error) {
	if cores, err := cpu.Counts(false); err != nil {
		return c, err
	} else {
		c.Cores = cores
	}
	if cpus, err := cpu.Percent(time.Duration(200)*time.Millisecond, true); err != nil {
		return c, err
	} else {
		c.Cpus = cpus
	}
	return c, nil
}

//@function: InitRAM
//@description: RAM信息
//@return: r Ram, err error

func GetRAM() (r Ram, err error) {
	if u, err := mem.VirtualMemory(); err != nil {
		return r, err
	} else {
		r.UsedMB = int(u.Used) / MB
		r.TotalMB = int(u.Total) / MB
	}
	return r, nil
}

//@function: InitDisk
//@description: 硬盘信息
//@return: d Disk, err error

func GetDisk() (d Disk, err error) {
	if u, err := disk.Usage("/"); err != nil {
		return d, err
	} else {
		d.UsedMB = int(u.Used) / MB
		d.UsedGB = int(u.Used) / GB
		d.TotalMB = int(u.Total) / MB
		d.TotalGB = int(u.Total) / GB
	}

	return d, nil
}

// ProcessMemMB 进程内存
func ProcessMemMB() uint64 {
	var ms runtime.MemStats
	runtime.ReadMemStats(&ms)
	return ms.Sys / MB
}