add basic Weather widget (use forecast.io)

i3status/utils.go

@@ -15,6 +15,7 @@ const (
 	YELLOW = "#ffff00"
 	GREEN  = "#00ff00"
 	WHITE  = "#ffffff"
+	BLUE   = "#0000ff"
 )
 
 func ReadLines(fileName string, callback func(string) bool) {

i3status/weather.go

@@ -0,0 +1,61 @@
+package i3status
+
+import (
+	"fmt"
+	forecast "github.com/mlbright/forecast/v2"
+	"io/ioutil"
+	"log"
+	"os/user"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type WeatherWidget struct {
+	BaseWidget
+}
+
+func NewWeatherWidget() *WeatherWidget {
+	instanceCount++
+	w := WeatherWidget{
+		BaseWidget: *NewBaseWidget(),
+	}
+	return &w
+}
+
+func (w *WeatherWidget) basicLoop() {
+	msg := NewMessage()
+	msg.Name = "Wlan"
+	msg.Color = "#ffffff"
+	msg.Instance = strconv.Itoa(w.Instance)
+	usr, _ := user.Current()
+	keybytes, err := ioutil.ReadFile(usr.HomeDir + "/.forecast.io.rc")
+	if err != nil {
+		log.Fatal(err)
+	}
+	key := string(keybytes)
+	key = strings.TrimSpace(key)
+
+	for {
+		msg.FullText, msg.Color = w.getStatus(key)
+		w.Output <- *msg
+		time.Sleep(5000 * time.Millisecond)
+	}
+}
+
+func (w *WeatherWidget) getStatus(key string) (string, string) {
+
+	lat := "43.6595"
+	long := "-79.3433"
+
+	f, err := forecast.Get(key, lat, long, "now", forecast.CA)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return fmt.Sprintf("%s: %s %.2f C", f.Timezone, f.Currently.Summary, f.Currently.Temperature), BLUE
+}
+
+func (w *WeatherWidget) Start() {
+	go w.basicLoop()
+	go w.readLoop()
+}

main.go

@@ -32,6 +32,7 @@ func main() {
 	b.Add(i3status.NewPowerWidget())
 	b.Add(i3status.NewOnOffWidget())
 	b.Add(i3status.NewWlanWidget())
+	b.Add(i3status.NewWeatherWidget())
 	//b.Add(i3status.NewI3statusWidget())
 	//b.Add(i3status.NewEchoWidget())
 

test/weather_test.go

@@ -0,0 +1,37 @@
+package i3status_test
+
+import (
+	"github.com/ghedamat/go-i3status/i3status"
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+)
+
+func TestWeatherWidgetConstructor(t *testing.T) {
+	Convey("Given two channels", t, func() {
+		c := make(chan i3status.Message)
+		i := make(chan i3status.Entry)
+		Convey("When wlan is created", func() {
+			w := i3status.NewWeatherWidget()
+			w.SetChannels(c, i)
+			Convey("output channel is available", func() {
+				So(w.Output, ShouldEqual, c)
+			})
+		})
+	})
+}
+
+func TestWeatherWidgetHasMessage(t *testing.T) {
+	Convey("Given a widget", t, func() {
+		c := make(chan i3status.Message)
+		i := make(chan i3status.Entry)
+		w := i3status.NewWeatherWidget()
+		w.SetChannels(c, i)
+		Convey("When wlan is started", func() {
+			w.Start()
+			Convey("output message is available", func() {
+				msg := <-c
+				So(msg.FullText, ShouldContainSubstring, "C")
+			})
+		})
+	})
+}