kappanhang/statuslog.go

package main

import (
	"fmt"
	"os"
	"sync"
	"time"

	"github.com/fatih/color"
	"github.com/mattn/go-isatty"
)

type statusLogData struct {
	line1 string
	line2 string
	line3 string

	ptt       bool
	tune      bool
	frequency uint
	mode      string
	dataMode  string
	filter    string
	preamp    string
	agc       string
	vd        string
	txPower   string
	rfGain    string
	sql       string
	nr        string
	nrEnabled bool
	s         string
	ovf       bool
	swr       string
	ts        string

	startTime time.Time
	rttStr    string

	audioMonOn    bool
	audioRecOn    bool
	audioStateStr string
}

type statusLogStruct struct {
	ticker           *time.Ticker
	stopChan         chan bool
	stopFinishedChan chan bool
	mutex            sync.Mutex

	preGenerated struct {
		rxColor          *color.Color
		retransmitsColor *color.Color
		lostColor        *color.Color

		stateStr struct {
			tx   string
			tune string
		}
		audioStateStr struct {
			off   string
			monOn string
			rec   string
		}

		ovf string
	}

	data *statusLogData
}

var statusLog statusLogStruct

func (s *statusLogStruct) reportRTTLatency(l time.Duration) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.rttStr = fmt.Sprint(l.Milliseconds())
}

func (s *statusLogStruct) updateAudioStateStr() {
	if s.data.audioRecOn {
		s.data.audioStateStr = s.preGenerated.audioStateStr.rec
	} else if s.data.audioMonOn {
		s.data.audioStateStr = s.preGenerated.audioStateStr.monOn
	} else {
		s.data.audioStateStr = s.preGenerated.audioStateStr.off
	}
}

func (s *statusLogStruct) reportAudioMon(enabled bool) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.audioMonOn = enabled
	s.updateAudioStateStr()
}

func (s *statusLogStruct) reportAudioRec(enabled bool) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.audioRecOn = enabled
	s.updateAudioStateStr()
}

func (s *statusLogStruct) reportFrequency(f uint) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.frequency = f
}

func (s *statusLogStruct) reportMode(mode, filter string) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.mode = mode
	s.data.filter = filter
}

func (s *statusLogStruct) reportDataMode(dataMode, filter string) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.dataMode = dataMode
	if dataMode != "" {
		s.data.filter = filter
	}
}

func (s *statusLogStruct) reportPreamp(preamp int) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.preamp = fmt.Sprint("PAMP", preamp)
}

func (s *statusLogStruct) reportAGC(agc string) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.agc = "AGC" + agc
}

func (s *statusLogStruct) reportNREnabled(enabled bool) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.nrEnabled = enabled
}

func (s *statusLogStruct) reportVd(voltage float64) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.vd = fmt.Sprintf("%.1fV", voltage)
}

func (s *statusLogStruct) reportS(sValue string) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.s = sValue
}

func (s *statusLogStruct) reportOVF(ovf bool) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.ovf = ovf
}

func (s *statusLogStruct) reportSWR(swr float64) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.swr = fmt.Sprintf("%.1f", swr)
}

func (s *statusLogStruct) reportTS(ts uint) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.ts = "TS"
	if ts >= 1000 {
		if ts%1000 == 0 {
			s.data.ts += fmt.Sprintf("%.0fk", float64(ts)/1000)
		} else if ts%100 == 0 {
			s.data.ts += fmt.Sprintf("%.1fk", float64(ts)/1000)
		} else {
			s.data.ts += fmt.Sprintf("%.2fk", float64(ts)/1000)
		}
	} else {
		s.data.ts += fmt.Sprint(ts)
	}
}

func (s *statusLogStruct) reportPTT(ptt, tune bool) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.tune = tune
	s.data.ptt = ptt
}

func (s *statusLogStruct) reportTxPower(percent int) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.txPower = fmt.Sprint(percent, "%")
}

func (s *statusLogStruct) reportRFGain(percent int) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.rfGain = fmt.Sprint(percent, "%")
}

func (s *statusLogStruct) reportSQL(percent int) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.sql = fmt.Sprint(percent, "%")
}

func (s *statusLogStruct) reportNR(percent int) {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.data == nil {
		return
	}
	s.data.nr = fmt.Sprint(percent, "%")
}

func (s *statusLogStruct) clearInternal() {
	fmt.Printf("%c[2K", 27)
}

func (s *statusLogStruct) print() {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	if s.isRealtimeInternal() {
		s.clearInternal()
		fmt.Println(s.data.line1)
		s.clearInternal()
		fmt.Println(s.data.line2)
		s.clearInternal()
		fmt.Printf(s.data.line3+"%c[1A%c[1A", 27, 27)
	} else {
		log.PrintStatusLog(s.data.line3)
	}
}

func (s *statusLogStruct) padLeft(str string, length int) string {
	if !s.isRealtimeInternal() {
		return str
	}

	for len(str) < length {
		str = " " + str
	}
	return str
}

func (s *statusLogStruct) padRight(str string, length int) string {
	if !s.isRealtimeInternal() {
		return str
	}

	for len(str) < length {
		str += " "
	}
	return str
}

func (s *statusLogStruct) update() {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	var filterStr string
	if s.data.filter != "" {
		filterStr = " " + s.data.filter
	}
	var preampStr string
	if s.data.preamp != "" {
		preampStr = " " + s.data.preamp
	}
	var agcStr string
	if s.data.agc != "" {
		agcStr = " " + s.data.agc
	}
	var nrStr string
	if s.data.nr != "" {
		nrStr = " NR"
		if s.data.nrEnabled {
			nrStr += s.data.nr
		} else {
			nrStr += "-"
		}
	}
	var rfGainStr string
	if s.data.rfGain != "" {
		rfGainStr = " rfg " + s.data.rfGain
	}
	var sqlStr string
	if s.data.sql != "" {
		sqlStr = " sql " + s.data.sql
	}
	s.data.line1 = fmt.Sprint(s.data.audioStateStr, filterStr, preampStr, agcStr, nrStr, rfGainStr, sqlStr)

	var stateStr string
	if s.data.tune {
		stateStr = s.preGenerated.stateStr.tune
	} else if s.data.ptt {
		stateStr = s.preGenerated.stateStr.tx
	} else {
		var ovfStr string
		if s.data.ovf {
			ovfStr = s.preGenerated.ovf
		}
		if len(s.data.s) <= 2 {
			stateStr = s.preGenerated.rxColor.Sprint("  " + s.padRight(s.data.s, 4) + " ")
		} else {
			stateStr = s.preGenerated.rxColor.Sprint(" " + s.padRight(s.data.s, 5) + " ")
		}
		stateStr += ovfStr
	}
	var tsStr string
	if s.data.ts != "" {
		tsStr = " " + s.data.ts
	}
	var modeStr string
	if s.data.mode != "" {
		modeStr = " " + s.data.mode + s.data.dataMode
	}
	var vdStr string
	if s.data.vd != "" {
		vdStr = " " + s.data.vd
	}
	var txPowerStr string
	if s.data.txPower != "" {
		txPowerStr = " txpwr " + s.data.txPower
	}
	var swrStr string
	if (s.data.tune || s.data.ptt) && s.data.swr != "" {
		swrStr = " SWR" + s.data.swr
	}
	s.data.line2 = fmt.Sprint(stateStr, " ", fmt.Sprintf("%.6f", float64(s.data.frequency)/1000000),
		tsStr, modeStr, vdStr, txPowerStr, swrStr)

	up, down, lost, retransmits := netstat.get()
	lostStr := "0"
	if lost > 0 {
		lostStr = s.preGenerated.lostColor.Sprint(" ", lost, " ")
	}
	retransmitsStr := "0"
	if retransmits > 0 {
		retransmitsStr = s.preGenerated.retransmitsColor.Sprint(" ", retransmits, " ")
	}

	s.data.line3 = fmt.Sprint("up ", s.padLeft(fmt.Sprint(time.Since(s.data.startTime).Round(time.Second)), 6),
		" rtt ", s.padLeft(s.data.rttStr, 3), "ms up ",
		s.padLeft(netstat.formatByteCount(up), 8), "/s down ",
		s.padLeft(netstat.formatByteCount(down), 8), "/s retx ", retransmitsStr, "/1m lost ", lostStr, "/1m\r")

	if s.isRealtimeInternal() {
		t := time.Now().Format("2006-01-02T15:04:05.000Z0700")
		s.data.line1 = fmt.Sprint(t, " ", s.data.line1)
		s.data.line2 = fmt.Sprint(t, " ", s.data.line2)
		s.data.line3 = fmt.Sprint(t, " ", s.data.line3)
	}
}

func (s *statusLogStruct) loop() {
	for {
		select {
		case <-s.ticker.C:
			s.update()
			s.print()
		case <-s.stopChan:
			s.stopFinishedChan <- true
			return
		}
	}
}

func (s *statusLogStruct) isRealtimeInternal() bool {
	return statusLogInterval < time.Second
}

func (s *statusLogStruct) isRealtime() bool {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	return s.ticker != nil && s.isRealtimeInternal()
}

func (s *statusLogStruct) isActive() bool {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	return s.ticker != nil
}

func (s *statusLogStruct) startPeriodicPrint() {
	s.mutex.Lock()
	defer s.mutex.Unlock()

	s.initIfNeeded()

	s.data = &statusLogData{
		s:             "S0",
		startTime:     time.Now(),
		rttStr:        "?",
		audioStateStr: s.preGenerated.audioStateStr.off,
	}

	s.stopChan = make(chan bool)
	s.stopFinishedChan = make(chan bool)
	s.ticker = time.NewTicker(statusLogInterval)
	go s.loop()
}

func (s *statusLogStruct) stopPeriodicPrint() {
	if !s.isActive() {
		return
	}
	s.ticker.Stop()
	s.ticker = nil

	s.stopChan <- true
	<-s.stopFinishedChan

	if s.isRealtimeInternal() {
		s.clearInternal()
		fmt.Println()
		s.clearInternal()
		fmt.Println()
		s.clearInternal()
		fmt.Println()
	}
}

func (s *statusLogStruct) initIfNeeded() {
	if s.data != nil { // Already initialized?
		return
	}

	if !isatty.IsTerminal(os.Stdout.Fd()) && statusLogInterval < time.Second {
		statusLogInterval = time.Second
	}

	c := color.New(color.FgHiWhite)
	c.Add(color.BgWhite)
	s.preGenerated.audioStateStr.off = c.Sprint("  MON  ")

	s.preGenerated.rxColor = color.New(color.FgHiWhite)
	s.preGenerated.rxColor.Add(color.BgGreen)
	s.preGenerated.audioStateStr.monOn = s.preGenerated.rxColor.Sprint("  MON  ")

	c = color.New(color.FgHiWhite, color.BlinkRapid)
	c.Add(color.BgRed)
	s.preGenerated.stateStr.tx = c.Sprint("  TX   ")
	s.preGenerated.stateStr.tune = c.Sprint("  TUNE ")
	s.preGenerated.audioStateStr.rec = c.Sprint("  REC  ")

	c = color.New(color.FgHiWhite)
	c.Add(color.BgRed)
	s.preGenerated.ovf = c.Sprint(" OVF ")

	s.preGenerated.retransmitsColor = color.New(color.FgHiWhite)
	s.preGenerated.retransmitsColor.Add(color.BgYellow)
	s.preGenerated.lostColor = color.New(color.FgHiWhite)
	s.preGenerated.lostColor.Add(color.BgRed)
}