Remove debug print and add error handling (itgui)

api/info.go

@@ -48,7 +48,7 @@ func (c *Client) BatteryLevel() (uint8, error) {
 func (c *Client) WatchBatteryLevel() (<-chan uint8, func(), error) {
 	c.battLevelCh = make(chan types.Response, 2)
 	err := c.requestNoRes(types.Request{
-		Type: types.ReqTypeBattLevel,
+		Type: types.ReqTypeWatchBattLevel,
 	})
 	if err != nil {
 		return nil, nil, err

cmd/itgui/info.go

@@ -1,22 +1,17 @@
 package main
 
 import (
-	"bufio"
-	"errors"
 	"fmt"
 	"image/color"
-	"net"
-
-	"encoding/json"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/canvas"
 	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/theme"
-	"go.arsenm.dev/itd/internal/types"
+	"go.arsenm.dev/itd/api"
 )
 
-func infoTab(parent fyne.Window) *fyne.Container {
+func infoTab(parent fyne.Window, client *api.Client) *fyne.Container {
 	infoLayout := container.NewVBox(
 		// Add rectangle for a bit of padding
 		canvas.NewRectangle(color.Transparent),
@@ -25,20 +20,50 @@ func infoTab(parent fyne.Window) *fyne.Container {
 	// Create label for heart rate
 	heartRateLbl := newText("0 BPM", 24)
 	// Creae container to store heart rate section
-	heartRate := container.NewVBox(
+	heartRateSect := container.NewVBox(
 		newText("Heart Rate", 12),
 		heartRateLbl,
 		canvas.NewLine(theme.ShadowColor()),
 	)
-	infoLayout.Add(heartRate)
+	infoLayout.Add(heartRateSect)
 
-	// Watch for heart rate updates
+	heartRateCh, cancel, err := client.WatchHeartRate()
-	go watch(types.ReqTypeWatchHeartRate, func(data interface{}) {
+	if err != nil {
-		// Change text of heart rate label
+		guiErr(err, "Error getting heart rate channel", true, parent)
-		heartRateLbl.Text = fmt.Sprintf("%d BPM", int(data.(float64)))
+	}
-		// Refresh label
+	onClose = append(onClose, cancel)
-		heartRateLbl.Refresh()
+	go func() {
-	}, parent)
+		for heartRate := range heartRateCh {
+			// Change text of heart rate label
+			heartRateLbl.Text = fmt.Sprintf("%d BPM", heartRate)
+			// Refresh label
+			heartRateLbl.Refresh()
+		}
+	}()
+
+	// Create label for heart rate
+	stepCountLbl := newText("0 Steps", 24)
+	// Creae container to store heart rate section
+	stepCountSect := container.NewVBox(
+		newText("Step Count", 12),
+		stepCountLbl,
+		canvas.NewLine(theme.ShadowColor()),
+	)
+	infoLayout.Add(stepCountSect)
+
+	stepCountCh, cancel, err := client.WatchStepCount()
+	if err != nil {
+		guiErr(err, "Error getting step count channel", true, parent)
+	}
+	onClose = append(onClose, cancel)
+	go func() {
+		for stepCount := range stepCountCh {
+			// Change text of heart rate label
+			stepCountLbl.Text = fmt.Sprintf("%d Steps", stepCount)
+			// Refresh label
+			stepCountLbl.Refresh()
+		}
+	}()
 
 	// Create label for battery level
 	battLevelLbl := newText("0%", 24)
@@ -50,32 +75,40 @@ func infoTab(parent fyne.Window) *fyne.Container {
 	)
 	infoLayout.Add(battLevel)
 
-	// Watch for changes in battery level
+	battLevelCh, cancel, err := client.WatchBatteryLevel()
-	go watch(types.ReqTypeWatchBattLevel, func(data interface{}) {
+	if err != nil {
-		battLevelLbl.Text = fmt.Sprintf("%d%%", int(data.(float64)))
+		guiErr(err, "Error getting battery level channel", true, parent)
-		battLevelLbl.Refresh()
+	}
-	}, parent)
+	onClose = append(onClose, cancel)
+	go func() {
+		for battLevel := range battLevelCh {
+			// Change text of battery level label
+			battLevelLbl.Text = fmt.Sprintf("%d%%", battLevel)
+			// Refresh label
+			battLevelLbl.Refresh()
+		}
+	}()
 
-	fwVerString, err := get(types.ReqTypeFwVersion)
+	fwVerString, err := client.Version()
 	if err != nil {
 		guiErr(err, "Error getting firmware string", true, parent)
 	}
 
 	fwVer := container.NewVBox(
 		newText("Firmware Version", 12),
-		newText(fwVerString.(string), 24),
+		newText(fwVerString, 24),
 		canvas.NewLine(theme.ShadowColor()),
 	)
 	infoLayout.Add(fwVer)
 
-	btAddrString, err := get(types.ReqTypeBtAddress)
+	btAddrString, err := client.Address()
 	if err != nil {
 		panic(err)
 	}
 
 	btAddr := container.NewVBox(
 		newText("Bluetooth Address", 12),
-		newText(btAddrString.(string), 24),
+		newText(btAddrString, 24),
 		canvas.NewLine(theme.ShadowColor()),
 	)
 	infoLayout.Add(btAddr)
@@ -83,65 +116,6 @@ func infoTab(parent fyne.Window) *fyne.Container {
 	return infoLayout
 }
 
-func watch(req int, onRecv func(data interface{}), parent fyne.Window) error {
-	conn, err := net.Dial("unix", SockPath)
-	if err != nil {
-		return err
-	}
-	defer conn.Close()
-	err = json.NewEncoder(conn).Encode(types.Request{
-		Type: req,
-	})
-	if err != nil {
-		return err
-	}
-	scanner := bufio.NewScanner(conn)
-	for scanner.Scan() {
-		res, err := getResp(scanner.Bytes())
-		if err != nil {
-			guiErr(err, "Error getting response from connection", false, parent)
-			continue
-		}
-		onRecv(res.Value)
-	}
-	return nil
-}
-
-func get(req int) (interface{}, error) {
-	conn, err := net.Dial("unix", SockPath)
-	if err != nil {
-		return nil, err
-	}
-	defer conn.Close()
-	err = json.NewEncoder(conn).Encode(types.Request{
-		Type: req,
-	})
-	if err != nil {
-		return nil, err
-	}
-	line, _, err := bufio.NewReader(conn).ReadLine()
-	if err != nil {
-		return nil, err
-	}
-	res, err := getResp(line)
-	if err != nil {
-		return nil, err
-	}
-	return res.Value, nil
-}
-
-func getResp(line []byte) (*types.Response, error) {
-	var res types.Response
-	err := json.Unmarshal(line, &res)
-	if err != nil {
-		return nil, err
-	}
-	if res.Error {
-		return nil, errors.New(res.Message)
-	}
-	return &res, nil
-}
-
 func newText(t string, size float32) *canvas.Text {
 	text := canvas.NewText(t, theme.ForegroundColor())
 	text.TextSize = size

cmd/itgui/main.go

@@ -1,31 +1,38 @@
 package main
 
 import (
-	"net"
-
 	"fyne.io/fyne/v2/app"
 	"fyne.io/fyne/v2/container"
+	"go.arsenm.dev/itd/api"
 )
 
-var SockPath = "/tmp/itd/socket"
+var onClose []func()
 
 func main() {
 	// Create new app
 	a := app.New()
 	// Create new window with title "itgui"
 	window := a.NewWindow("itgui")
+	window.SetOnClosed(func() {
+		for _, closeFn := range onClose {
+			closeFn()
+		}
+	})
 
-	_, err := net.Dial("unix", SockPath)
+	client, err := api.New(api.DefaultAddr)
 	if err != nil {
-		guiErr(err, "Error dialing itd socket", true, window)
+		guiErr(err, "Error connecting to itd", true, window)
 	}
+	onClose = append(onClose, func() {
+		client.Close()
+	})
 
 	// Create new app tabs container
 	tabs := container.NewAppTabs(
-		container.NewTabItem("Info", infoTab(window)),
+		container.NewTabItem("Info", infoTab(window, client)),
-		container.NewTabItem("Notify", notifyTab(window)),
+		container.NewTabItem("Notify", notifyTab(window, client)),
-		container.NewTabItem("Set Time", timeTab(window)),
+		container.NewTabItem("Set Time", timeTab(window, client)),
-		container.NewTabItem("Upgrade", upgradeTab(window)),
+		container.NewTabItem("Upgrade", upgradeTab(window, client)),
 	)
 
 	// Set tabs as window content

cmd/itgui/notify.go

@@ -1,17 +1,14 @@
 package main
 
 import (
-	"encoding/json"
-	"net"
-
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/layout"
 	"fyne.io/fyne/v2/widget"
-	"go.arsenm.dev/itd/internal/types"
+	"go.arsenm.dev/itd/api"
 )
 
-func notifyTab(parent fyne.Window) *fyne.Container {
+func notifyTab(parent fyne.Window, client *api.Client) *fyne.Container {
 	// Create new entry for notification title
 	titleEntry := widget.NewEntry()
 	titleEntry.SetPlaceHolder("Title")
@@ -22,20 +19,11 @@ func notifyTab(parent fyne.Window) *fyne.Container {
 
 	// Create new button to send notification
 	sendBtn := widget.NewButton("Send", func() {
-		// Dial itd UNIX socket
+		err := client.Notify(titleEntry.Text, bodyEntry.Text)
-		conn, err := net.Dial("unix", SockPath)
 		if err != nil {
-			guiErr(err, "Error dialing socket", false, parent)
+			guiErr(err, "Error sending notification", false, parent)
 			return
 		}
-		// Encode notify request on connection
-		json.NewEncoder(conn).Encode(types.Request{
-			Type: types.ReqTypeNotify,
-			Data: types.ReqDataNotify{
-				Title: titleEntry.Text,
-				Body:  bodyEntry.Text,
-			},
-		})
 	})
 
 	// Return new container containing all elements

cmd/itgui/time.go

@@ -1,18 +1,16 @@
 package main
 
 import (
-	"encoding/json"
-	"net"
 	"time"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/layout"
 	"fyne.io/fyne/v2/widget"
-	"go.arsenm.dev/itd/internal/types"
+	"go.arsenm.dev/itd/api"
 )
 
-func timeTab(parent fyne.Window) *fyne.Container {
+func timeTab(parent fyne.Window, client *api.Client) *fyne.Container {
 	// Create new entry for time string
 	timeEntry := widget.NewEntry()
 	// Set text to current time formatter properly
@@ -21,7 +19,7 @@ func timeTab(parent fyne.Window) *fyne.Container {
 	// Create button to set current time
 	currentBtn := widget.NewButton("Set Current", func() {
 		timeEntry.SetText(time.Now().Format(time.RFC1123))
-		setTime(true)
+		setTime(client, true)
 	})
 
 	// Create button to set time inside entry
@@ -33,7 +31,7 @@ func timeTab(parent fyne.Window) *fyne.Container {
 			return
 		}
 		// Set time to parsed time
-		setTime(false, parsedTime)
+		setTime(client, false, parsedTime)
 	})
 
 	// Return new container with all elements centered
@@ -48,30 +46,13 @@ func timeTab(parent fyne.Window) *fyne.Container {
 
 // setTime sets the first element in the variadic parameter
 // if current is false, otherwise, it sets the current time.
-func setTime(current bool, t ...time.Time) error {
+func setTime(client *api.Client, current bool, t ...time.Time) error {
-	// Dial UNIX socket
+	var err error
-	conn, err := net.Dial("unix", SockPath)
-	if err != nil {
-		return err
-	}
-	defer conn.Close()
-	var data string
-	// If current is true, use the string "now"
-	// otherwise, use the formatted time from the
-	// first element in the variadic parameter.
-	// "now" is more accurate than formatting
-	// current time as only seconds are preserved
-	// in that case.
 	if current {
-		data = "now"
+		err = client.SetTimeNow()
 	} else {
-		data = t[0].Format(time.RFC3339)
+		err = client.SetTime(t[0])
 	}
-	// Encode SetTime request with above data
-	err = json.NewEncoder(conn).Encode(types.Request{
-		Type: types.ReqTypeSetTime,
-		Data: data,
-	})
 	if err != nil {
 		return err
 	}

cmd/itgui/upgrade.go

@@ -1,10 +1,7 @@
 package main
 
 import (
-	"bufio"
-	"encoding/json"
 	"fmt"
-	"net"
 	"path/filepath"
 
 	"fyne.io/fyne/v2"
@@ -13,11 +10,11 @@ import (
 	"fyne.io/fyne/v2/layout"
 	"fyne.io/fyne/v2/storage"
 	"fyne.io/fyne/v2/widget"
-	"github.com/mitchellh/mapstructure"
+	"go.arsenm.dev/itd/api"
 	"go.arsenm.dev/itd/internal/types"
 )
 
-func upgradeTab(parent fyne.Window) *fyne.Container {
+func upgradeTab(parent fyne.Window, client *api.Client) *fyne.Container {
 	var (
 		archivePath  string
 		firmwarePath string
@@ -117,7 +114,7 @@ func upgradeTab(parent fyne.Window) *fyne.Container {
 		// Resize modal to 300x100
 		progressDlg.Resize(fyne.NewSize(300, 100))
 
-		var fwUpgType int
+		var fwUpgType api.UpgradeType
 		var files []string
 		// Get appropriate upgrade type and file paths
 		switch upgradeTypeSelect.Selected {
@@ -129,48 +126,18 @@ func upgradeTab(parent fyne.Window) *fyne.Container {
 			files = append(files, initPktPath, firmwarePath)
 		}
 
-		// Dial itd UNIX socket
+		progress, err := client.FirmwareUpgrade(fwUpgType, files...)
-		conn, err := net.Dial("unix", SockPath)
 		if err != nil {
-			guiErr(err, "Error dialing socket", false, parent)
+			guiErr(err, "Error initiating DFU", false, parent)
 			return
 		}
-		defer conn.Close()
-
-		// Encode firmware upgrade request to connection
-		json.NewEncoder(conn).Encode(types.Request{
-			Type: types.ReqTypeFwUpgrade,
-			Data: types.ReqDataFwUpgrade{
-				Type:  fwUpgType,
-				Files: files,
-			},
-		})
 
 		// Show progress dialog
 		progressDlg.Show()
 		// Hide progress dialog after completion
 		defer progressDlg.Hide()
 
-		scanner := bufio.NewScanner(conn)
+		for event := range progress {
-		for scanner.Scan() {
-			var res types.Response
-			// Decode scanned line into response struct
-			err = json.Unmarshal(scanner.Bytes(), &res)
-			if err != nil {
-				guiErr(err, "Error decoding response", false, parent)
-				return
-			}
-			if res.Error {
-				guiErr(err, "Error returned in response", false, parent)
-				return
-			}
-			var event types.DFUProgress
-			// Decode response data into progress struct
-			err = mapstructure.Decode(res.Value, &event)
-			if err != nil {
-				guiErr(err, "Error decoding response value", false, parent)
-				return
-			}
 			// Set label text to received / total B
 			progressLbl.SetText(fmt.Sprintf("%d / %d B", event.Received, event.Total))
 			// Set progress bar values
@@ -179,7 +146,7 @@ func upgradeTab(parent fyne.Window) *fyne.Container {
 			// Refresh progress bar
 			progressBar.Refresh()
 			// If transfer finished, break
-			if event.Received == event.Total {
+			if event.Sent == event.Total {
 				break
 			}
 		}