From 9a494fc233ff3fc74b1a30a672a10e49b44de549 Mon Sep 17 00:00:00 2001
From: Collin Guarino <collin.guarino@gmail.com>
Date: Fri, 12 Feb 2016 17:44:52 -0500
Subject: Added Light.Blink and made SetLightState get the new light state
 after a change.

---
 light.go      | 40 +++++++++++++++++++++++++++++++++++++++-
 light_test.go |  9 ++++++---
 2 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/light.go b/light.go
index 413d9bc..252a84a 100644
--- a/light.go
+++ b/light.go
@@ -13,6 +13,7 @@ import (
     "encoding/json"
     "strings"
     "errors"
+    "time"
 )
 
 // Light struct defines attributes of a light.
@@ -82,10 +83,38 @@ func (self *Light) On() error {
 // Light.Toggle will toggle the light source on and off
 func (self *Light) Toggle() error {
     if self.State.On {
+        fmt.Println("toggling off")
         return self.Off()
     } else {
+        fmt.Println("toggling on")
         return self.On()
     }
+    return nil
+}
+
+// Light.Blink will turn the light off and on repeatedly for a given seconds
+// interval and return the light back to its off or on state afterwards.
+// Note: time will vary based on connection speed and algorithm speed.
+func (self *Light) Blink(seconds int) error {
+    originalState := self.State.On
+
+    // Toggle the light on and off
+    for i := 0; i <= seconds; i++ {
+        err := self.Toggle()
+        if err != nil {
+            return err
+        }
+        time.Sleep(time.Second)
+    }
+
+    // Return the light to its original on or off state
+    if self.State.On != originalState {
+        err := self.Toggle()
+        if err != nil {
+            return err
+        }
+    }
+    return nil
 }
 
 // Light.ColorLoop will set the light state to 'colorloop' if `active`
@@ -103,7 +132,16 @@ func (self *Light) ColorLoop(activate bool) error {
 func SetLightState(light *Light, newState LightState) error {
     uri := fmt.Sprintf("/api/%s/lights/%d/state", light.Bridge.Username, light.Index)
     _, _, err := light.Bridge.Put(uri, newState)
-    return err
+    if err != nil {
+        return err
+    }
+
+    // Get the new light state and update the current Light struct
+    *light, err = GetLight(light.Bridge, light.Name)
+    if err != nil {
+        return err
+    }
+    return nil
 }
 
 // GetAllLights retreives the state of all lights that the bridge is aware of.
diff --git a/light_test.go b/light_test.go
index 98c2030..0ecfeaa 100644
--- a/light_test.go
+++ b/light_test.go
@@ -10,7 +10,7 @@ package hue
 import (
     "testing"
     "fmt"
-    "time"
+    //"time"
 )
 
 func TestGetAllLights(t *testing.T) {
@@ -27,7 +27,7 @@ func TestSetLightState(t *testing.T) {
     fmt.Println("\nTESTING LIGHT STATE:\n\n")
     bridge := NewBridge("192.168.1.128", "319b36233bd2328f3e40731b23479207")
     lights, _ := GetAllLights(bridge)
-    selectedLight := lights[0]
+    selectedLight := lights[5]
 
     selectedLight.On()
     time.Sleep(time.Second)
@@ -35,7 +35,10 @@ func TestSetLightState(t *testing.T) {
     time.Sleep(time.Second)
     selectedLight.Toggle()
     time.Sleep(time.Second)
+
     selectedLight.ColorLoop(false)
 
-    selectedLight.SetName("Ceiling Fan Outer")
+    selectedLight.SetName(selectedLight.Name)
+
+    selectedLight.Blink(3)
 }
-- 
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