ISSUE-143: Implement TimeZoneDiff func to Schedule as well (#245)

fix format

update changelog.md

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.6.5 (June 15, 2021)
+BUGFIX:
+* **Schedule:** Timezone diff problem fixed.
+
 ## 0.6.4 (April 14, 2021)
 BUGFIX:
 * **Notification Policy:** De-duplication Action problem fixed.

opsgenie/resource_opsgenie_schedule.go

@@ -2,10 +2,10 @@ package opsgenie
 
 import (
 	"context"
-	"log"
-
 	"github.com/opsgenie/opsgenie-go-sdk-v2/og"
 	"github.com/opsgenie/opsgenie-go-sdk-v2/schedule"
+	"log"
+	"time"
 
 	"fmt"
 
@@ -35,8 +35,10 @@ func resourceOpsgenieSchedule() *schema.Resource {
 				ValidateFunc: validateOpsgenieScheduleDescription,
 			},
 			"timezone": {
-				Type:     schema.TypeString,
-				Optional: true,
+				Type:             schema.TypeString,
+				Optional:         true,
+				Default:          "America/New_York",
+				DiffSuppressFunc: checkTimeZoneDifference,
 			},
 			"enabled": {
 				Type:     schema.TypeBool,
@@ -50,6 +52,21 @@ func resourceOpsgenieSchedule() *schema.Resource {
 	}
 }
 
+func checkTimeZoneDifference(k, old, new string, d *schema.ResourceData) bool {
+	locationOld, errOld := time.LoadLocation(old)
+	if errOld != nil {
+		return false
+	}
+	locationNew, errNew := time.LoadLocation(new)
+	if errNew != nil {
+		return false
+	}
+	now := time.Now()
+	timeOld := now.In(locationOld)
+	timeNew := now.In(locationNew)
+	return timeOld.Format(time.ANSIC) == timeNew.Format(time.ANSIC)
+}
+
 func resourceOpsgenieScheduleCreate(d *schema.ResourceData, meta interface{}) error {
 	client, err := schedule.NewClient(meta.(*OpsgenieClient).client.Config)
 	if err != nil {

opsgenie/resource_opsgenie_schedule_test.go

@@ -174,3 +174,19 @@ resource "opsgenie_schedule" "test" {
 
 `, rString)
 }
+
+func TestCheckTimeZoneDifference(t *testing.T) {
+	oldTimeZone := "America/Los_Angeles"
+	newTimeZone := "Canada/Pacific"
+	if !checkTimeZoneDiff("", oldTimeZone, newTimeZone, nil) {
+		t.Errorf("Timezones should be equal")
+	}
+}
+
+func TestCheckTimeZoneDifference_notEqual(t *testing.T) {
+	oldTimeZone := "America/Los_Angeles"
+	newTimeZone := "Europe/Istanbul"
+	if checkTimeZoneDiff("", oldTimeZone, newTimeZone, nil) {
+		t.Errorf("Timezones should be equal")
+	}
+}