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controller.go
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controller.go
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package main
import (
"log"
"os"
"sync"
"time"
"github.com/thiefmaster/controller/apis"
"github.com/thiefmaster/controller/comm"
"github.com/thiefmaster/controller/ddc"
"github.com/thiefmaster/controller/wts"
)
const (
knob = iota
buttonTopLeft
buttonBottomLeft
buttonBottomRight
LED5
LED4
LED3
LED2
LED1
)
type buttonState struct {
knob bool
topLeft bool
bottomLeft bool
bottomRight bool
bottomLeftStart time.Time
bottomRightStart time.Time
}
func (b *buttonState) handleMessage(msg comm.Message) {
if msg.Message != comm.ButtonPressed && msg.Message != comm.ButtonReleased {
return
}
pressed := msg.Message == comm.ButtonPressed
if msg.Source == knob {
b.knob = pressed
} else if msg.Source == buttonTopLeft {
b.topLeft = pressed
} else if msg.Source == buttonBottomLeft {
if !b.bottomLeft && pressed {
b.bottomLeftStart = time.Now()
} else if b.bottomLeft && !pressed {
b.bottomLeftStart = time.Time{}
}
b.bottomLeft = pressed
} else if msg.Source == buttonBottomRight {
if !b.bottomRight && pressed {
b.bottomRightStart = time.Now()
} else if b.bottomRight && !pressed {
b.bottomRightStart = time.Time{}
}
b.bottomRight = pressed
}
}
func (b *buttonState) getButtonBottomLeftDuration() time.Duration {
if !b.bottomLeft {
return 0
}
return time.Now().Sub(b.bottomLeftStart)
}
func (b *buttonState) getButtonBottomRightDuration() time.Duration {
if !b.bottomRight {
return 0
}
return time.Now().Sub(b.bottomRightStart)
}
type appState struct {
config *appConfig
ready bool
shutdown bool
desktopLocked bool
monitorsOn bool
knobTurnedWhilePressed bool
knobDirectionWhilePressed int
knobDirectionErrors int
ignoreKnobRelease bool
ignoreBottomLeftRelease bool
ignoreBottomRightRelease bool
disableFoobarStateLED bool
foobarState apis.FoobarPlayerInfo
tubeRemoteState apis.TubeRemoteState
tubeMode bool
buttonState buttonState
}
func (s *appState) reset() {
s.ready = false
s.shutdown = false
s.desktopLocked = false
s.monitorsOn = true
s.disableFoobarStateLED = false
s.ignoreBottomLeftRelease = false
s.ignoreBottomRightRelease = false
s.resetKnobPressState(false)
}
func (s *appState) resetKnobPressState(pressed bool) {
s.knobTurnedWhilePressed = false
s.ignoreKnobRelease = false
s.knobDirectionWhilePressed = 0
s.knobDirectionErrors = 0
}
func trackLockedState(state *appState, cmdChan chan<- comm.Command) {
for locked := range wts.RunMonitor() {
log.Printf("desktop locked: %v\n", locked)
state.desktopLocked = locked
if !locked && state.config.Numlock {
apis.SetNumLock(true)
}
cmdChan <- comm.NewToggleLEDCommand(buttonTopLeft, state.desktopLocked)
}
}
func keepMonitorOffWhileLocked(state *appState) {
// Sometimes the monitors wake up from standby even though they
// shouldn't. This seems to happen randomly or in some cases when
// connecting to the PC remotely. Let's force them back off!
for range time.Tick(5 * time.Second) {
if !state.monitorsOn && state.desktopLocked {
ddc.SetMonitorsStandby()
}
}
}
func trackFoobarState(state *appState, cmdChan chan<- comm.Command) {
for newState := range apis.SubscribeFoobarState(state.config.Foobar) {
state.foobarState = newState
if state.knobTurnedWhilePressed {
continue
}
log.Printf("foobar state changed: playback=%s, volume=%f\n", newState.State, newState.Volume.Current)
if state.tubeMode {
continue
}
if newState.State == apis.FoobarStateOffline {
cmdChan <- comm.NewSetLEDCommand(knob, 'R')
time.AfterFunc(1*time.Second, func() {
cmdChan <- comm.NewSetLEDCommand(knob, '0')
})
} else {
cmdChan <- newCommandForFoobarState(state)
}
}
}
func trackNotHubState(state *appState, cmdChan chan<- comm.Command) {
var nhs apis.NotHubState
go func() {
flag := false
for range time.Tick(150 * time.Millisecond) {
flag = !flag
cmdChan <- comm.NewToggleLEDCommand(LED1, nhs.Commit && flag)
if nhs.ChanHL || nhs.PrivMsg {
cmdChan <- comm.NewToggleLEDCommand(LED5, flag)
cmdChan <- comm.NewToggleLEDCommand(LED4, !flag)
cmdChan <- comm.NewToggleLEDCommand(LED5, flag)
} else if nhs.ChanMsg {
cmdChan <- comm.NewToggleLEDCommand(LED5, flag)
cmdChan <- comm.NewClearLEDCommand(LED4)
} else {
cmdChan <- comm.NewClearLEDCommand(LED5)
cmdChan <- comm.NewClearLEDCommand(LED4)
}
}
}()
for newState := range apis.SubscribeNotHubState(state.config.NotHub) {
log.Printf("nothub state changed: %#v\n", newState)
nhs = newState
}
}
func trackMattermostNotifications(state *appState, cmdChan chan<- comm.Command) {
// notification states
var ns struct {
messages bool
mentions bool
mux sync.Mutex
}
go func() {
flag := false
for range time.Tick(150 * time.Millisecond) {
flag = !flag
ns.mux.Lock()
if ns.mentions {
cmdChan <- comm.NewToggleLEDCommand(LED2, flag)
cmdChan <- comm.NewToggleLEDCommand(LED3, !flag)
cmdChan <- comm.NewToggleLEDCommand(LED2, flag)
} else if ns.messages {
cmdChan <- comm.NewToggleLEDCommand(LED2, flag)
cmdChan <- comm.NewClearLEDCommand(LED3)
} else {
cmdChan <- comm.NewClearLEDCommand(LED2)
cmdChan <- comm.NewClearLEDCommand(LED3)
}
ns.mux.Unlock()
}
}()
for newState := range apis.SubscribeMattermostState(state.config.Mattermost) {
log.Printf("mattermost state changed: messages=%v, mentions=%v\n", newState.HasMessages, newState.HasMentions)
ns.mux.Lock()
ns.messages = newState.HasMessages
ns.mentions = newState.HasMentions
ns.mux.Unlock()
}
}
func toggleTubeMode(state *appState, cmdChan chan<- comm.Command, enabled bool) {
state.tubeMode = enabled
cmdChan <- comm.NewToggleLEDCommand(buttonBottomLeft, state.tubeMode)
if enabled {
cmdChan <- newCommandForTubeRemoteState(state)
} else {
cmdChan <- newCommandForFoobarState(state)
}
}
func switchAudioTarget(state *appState, cmdChan chan<- comm.Command) {
if err := apis.SetNextDefaultEndpoint(); err != nil {
log.Printf("Could not change default audio endpoint: %s\n", err)
return
}
// we use `state.monitorsOn` to toggle the LED regardless of its previous state.
// XXX: maybe we should just prohibit most actions while the system is locked?
cmdChan <- comm.NewToggleLEDCommand(buttonBottomRight, state.monitorsOn)
time.AfterFunc(250*time.Millisecond, func() {
cmdChan <- comm.NewToggleLEDCommand(buttonBottomRight, !state.monitorsOn)
})
}
func runTubeRemote(state *appState, cmdChan chan<- comm.Command) {
for newState := range apis.RunTubeRemote(state.config.TubeRemotePort) {
oldState := state.tubeRemoteState
state.tubeRemoteState = newState
log.Printf("youtube state changed: %#v\n", newState)
if !state.tubeMode {
continue
}
if newState.ActionFailed {
cmdChan <- comm.NewSetLEDCommand(knob, 'R')
time.AfterFunc(1*time.Second, func() {
cmdChan <- newCommandForTubeRemoteState(state)
})
continue
} else if newState.State == apis.TubeRemoteStateOffline {
// if we came here right after action-failed, then changing the LED
// would happen too early and we have the timer to take care of it
if !oldState.ActionFailed {
cmdChan <- newCommandForTubeRemoteState(state)
}
continue
}
if ((!oldState.Playing() && newState.Playing()) || oldState.Volume > 0) && newState.Volume == 0 {
// show red when we just went silent or started playing while being silent
cmdChan <- comm.NewSetLEDCommand(knob, 'R')
time.AfterFunc(1*time.Second, func() {
cmdChan <- newCommandForTubeRemoteState(state)
})
} else if !oldState.Offline() && oldState.Volume != 100 && newState.Volume == 100 {
// show green if we changed the volume to max
cmdChan <- comm.NewSetLEDCommand(knob, 'G')
time.AfterFunc(1*time.Second, func() {
cmdChan <- newCommandForTubeRemoteState(state)
})
} else {
cmdChan <- newCommandForTubeRemoteState(state)
}
}
}
func main() {
configPath := "config.yaml"
if len(os.Args) > 1 {
configPath = os.Args[1]
}
config := &appConfig{}
if err := config.load(configPath); err != nil {
log.Fatalln(err)
}
state := &appState{config: config}
state.reset()
msgChan, cmdChan := comm.OpenPort(config.Port)
for msg := range msgChan {
if state.ready {
state.buttonState.handleMessage(msg)
}
switch {
case msg.Message == comm.Ready:
if !state.ready {
state.ready = true
go showFancyIntro(cmdChan, 75*time.Millisecond)
go trackLockedState(state, cmdChan)
go keepMonitorOffWhileLocked(state)
go trackFoobarState(state, cmdChan)
if config.NotHub.BaseURL != "" {
go trackNotHubState(state, cmdChan)
}
if config.Mattermost.ServerURL != "" {
go trackMattermostNotifications(state, cmdChan)
}
if config.TubeRemotePort != 0 {
go runTubeRemote(state, cmdChan)
}
}
case !state.ready:
log.Println("ignoring input during setup")
case msg.Message == comm.ButtonReleased && msg.Source == buttonTopLeft:
lockDesktop(state)
case msg.Message == comm.ButtonReleased && msg.Source == buttonBottomRight:
if !state.ignoreBottomRightRelease {
toggleMonitors(cmdChan, state)
}
state.ignoreBottomRightRelease = false
case msg.Message == comm.ButtonPressed && msg.Source == buttonBottomRight:
time.AfterFunc(250*time.Millisecond, func() {
if !state.shutdown && state.buttonState.getButtonBottomRightDuration() > 250*time.Millisecond {
state.ignoreBottomRightRelease = true
switchAudioTarget(state, cmdChan)
}
})
case msg.Message == comm.ButtonReleased && msg.Source == buttonBottomLeft:
if !state.buttonState.knob && !state.ignoreBottomLeftRelease {
if state.tubeMode {
toggleTubeMode(state, cmdChan, false)
} else {
go foobarNext(state, cmdChan)
}
}
state.ignoreBottomLeftRelease = false
case msg.Message == comm.ButtonPressed && msg.Source == buttonBottomLeft:
if state.buttonState.knob {
state.ignoreKnobRelease = true
state.ignoreBottomLeftRelease = true
if state.tubeMode {
go tubeRemoteStop(cmdChan)
} else {
go foobarStop(state, cmdChan)
}
} else if !state.tubeMode && config.TubeRemotePort != 0 {
time.AfterFunc(250*time.Millisecond, func() {
if !state.shutdown && state.buttonState.getButtonBottomLeftDuration() > 250*time.Millisecond {
state.ignoreBottomLeftRelease = true
toggleTubeMode(state, cmdChan, true)
}
})
}
case msg.Message == comm.ButtonPressed && msg.Source == knob:
state.resetKnobPressState(true)
case msg.Message == comm.ButtonReleased && msg.Source == knob:
if state.tubeMode {
if !state.knobTurnedWhilePressed && !state.ignoreKnobRelease {
go tubeRemoteTogglePause()
}
} else {
if !state.knobTurnedWhilePressed && !state.ignoreKnobRelease {
go foobarTogglePause(state)
}
state.resetKnobPressState(false)
cmdChan <- newCommandForFoobarState(state)
}
case msg.Message == comm.KnobTurned && msg.Source == knob:
if state.buttonState.knob {
if !state.knobTurnedWhilePressed {
log.Println("knob turning while pressed")
state.knobDirectionWhilePressed = signum(msg.Value)
state.knobTurnedWhilePressed = true
}
if state.knobDirectionWhilePressed != signum(msg.Value) {
log.Println("turn direction not maching initial direction")
state.knobDirectionErrors++
if state.knobDirectionErrors > 5 {
cmdChan <- comm.NewSetLEDCommand(knob, 'R')
time.AfterFunc(150*time.Millisecond, func() {
cmdChan <- comm.NewSetLEDCommand(knob, '0')
})
}
} else {
if state.tubeMode {
go tubeRemoteSeek(msg.Value)
} else {
go foobarSeek(state, msg.Value)
}
}
} else {
if state.tubeMode {
go tubeRemoteAdjustVolume(msg.Value)
} else {
go foobarAdjustVolume(state, cmdChan, msg.Value)
}
}
}
if state.buttonState.topLeft && state.buttonState.bottomLeft && state.buttonState.bottomRight {
state.shutdown = true
log.Println("shutdown requested")
break
}
}
showFancyOutro(cmdChan)
log.Println("exiting")
}