change ReceiptInfo to a long timestamp instead of a Date object

Author: ajungg

CHANGELOG.md

@@ -6,6 +6,9 @@ All notable changes to this project will be documented in this file.
 ### Added
 - ProductNotFound events are now posted when a scanned product is not found 
 
+### Changed
+- ReceiptInfo.getDate() is now deprecated, use getTimestamp instead.
+
 ## [0.15.2]
 
 ### Changes

build.gradle

@@ -23,7 +23,7 @@ allprojects {
     }
 
     project.ext {
-        sdkVersion='0.15.2'
+        sdkVersion='0.15.3'
         versionCode=1
 
         compileSdkVersion=28

core/src/main/java/io/snabble/sdk/ReceiptInfo.java

@@ -5,15 +5,15 @@
 public class ReceiptInfo {
     private String id;
     private String projectId;
-    private Date date;
+    private long timestamp;
     private String pdfUrl;
     private String shopName;
     private String price;
 
-    public ReceiptInfo(String id, String projectId, Date date, String pdfUrl, String shopName, String price) {
+    public ReceiptInfo(String id, String projectId, long timestamp, String pdfUrl, String shopName, String price) {
         this.id = id;
         this.projectId = projectId;
-        this.date = date;
+        this.timestamp = timestamp;
         this.pdfUrl = pdfUrl;
         this.shopName = shopName;
         this.price = price;
@@ -27,8 +27,13 @@ public String getProjectId() {
         return projectId;
     }
 
+    @Deprecated
     public Date getDate() {
-        return date;
+        return new Date(timestamp);
+    }
+
+    public long getTimestamp() {
+        return timestamp;
     }
 
     public String getPdfUrl() {

core/src/main/java/io/snabble/sdk/ReceiptsApi.java

@@ -87,7 +87,7 @@ public void success(ApiReceipt apiReceipt) {
                                 ReceiptInfo receiptInfo = new ReceiptInfo(
                                         apiOrder.id,
                                         apiOrder.project,
-                                        simpleDateFormat.parse(apiOrder.date),
+                                        simpleDateFormat.parse(apiOrder.date).getTime(),
                                         snabble.absoluteUrl(apiLink.href),
                                         apiOrder.shopName,
                                         priceFormatter.format(apiOrder.price));