♻️ Improve chill code

chill/chill.go

@@ -14,33 +14,43 @@ var MaxTemp int = 72500
 var Sleep = time.Second * 10
 var ErrChilledOut = errors.New("temperature dropped below threshold")
 
+func getCurrentTemp() (o int, err error) {
+	var by []byte
+	by, err = os.ReadFile(TempFile)
+	if err != nil {
+		return
+	}
+	by = bytes.TrimSpace(by)
+	o, err = strconv.Atoi(string(by))
+	return
+}
+
 func Chill(baseCtx context.Context) context.Context {
 	ctx, cancel := context.WithCancelCause(baseCtx)
 
+	ret := func(e error) context.Context {
+		cancel(e)
+		return ctx
+	}
+
+	current, err := getCurrentTemp()
+	if err != nil {
+		return ret(err)
+	}
+
+	if current < MaxTemp {
+		return ret(ErrChilledOut)
+	}
+
 	go func() {
-		var by []byte
-		var err error
-		current := MaxTemp + 1
-
-		for current >= MaxTemp {
-			by, err = os.ReadFile(TempFile)
-			if err != nil {
-				cancel(err)
-				return
-			}
-
-			by = bytes.TrimSpace(by)
-			current, err = strconv.Atoi(string(by))
-			if err != nil {
-				cancel(err)
-				return
-			}
-			if current < MaxTemp {
-				break
-			}
+		for current >= MaxTemp && err == nil {
 			time.Sleep(Sleep)
+			current, err = getCurrentTemp()
 		}
-		cancel(ErrChilledOut)
+		if err == nil {
+			err = ErrChilledOut
+		}
+		cancel(err)
 	}()
 
 	return ctx