add MapboxAccounts to generate and refresh sku tokens

1 files changed, 68 insertions, 0 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/MapboxAccounts.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/MapboxAccounts.java
new file mode 100644
index 0000000000..20cbdc26a1
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/MapboxAccounts.java
@@ -0,0 +1,68 @@
+package com.mapbox.mapboxsdk;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.annotation.NonNull;
+
+import com.mapbox.core.utils.TextUtils;
+import com.mapbox.mapboxsdk.constants.MapboxConstants;
+
+import java.util.Calendar;
+
+class MapboxAccounts {
+
+  // TODO: Move to Constants? Repeated in FileSource.
+  private static final String MAPBOX_SHARED_PREFERENCES = "MapboxSharedPreferences";
+
+  private final static String PREFERENCE_TIMESTAMP = "com.mapbox.mapboxsdk.accounts.timestamp";
+  private final static String PREFERENCE_SKU_TOKEN = "com.mapbox.mapboxsdk.accounts.skutoken";
+
+  private final static long ONE_HOUR_MILLIS = 60 * 60 * 1_000L;
+
+  private long timestamp;
+  private String skuToken;
+
+  MapboxAccounts() {
+    SharedPreferences sharedPreferences = getSharedPreferences();
+    timestamp = sharedPreferences.getLong(PREFERENCE_TIMESTAMP, 0L);
+    skuToken = sharedPreferences.getString(PREFERENCE_SKU_TOKEN, "");
+    if (timestamp == 0L || TextUtils.isEmpty(skuToken)) {
+      skuToken = generateSkuToken();
+      timestamp = persistToken(skuToken);
+    }
+  }
+
+  String getSkuToken() {
+    if (isExpired()) {
+      skuToken = generateSkuToken();
+      timestamp = persistToken(skuToken);
+    }
+
+    return skuToken;
+  }
+
+  private boolean isExpired() {
+    return (getNow() - timestamp > ONE_HOUR_MILLIS);
+  }
+
+  private long persistToken(String skuToken) {
+    long now = getNow();
+    SharedPreferences.Editor editor = getSharedPreferences().edit();
+    editor.putLong(PREFERENCE_TIMESTAMP, now);
+    editor.putString(PREFERENCE_SKU_TOKEN, skuToken);
+    editor.apply();
+    return now;
+  }
+
+  private @NonNull SharedPreferences getSharedPreferences() {
+    return Mapbox.getApplicationContext().getSharedPreferences(MAPBOX_SHARED_PREFERENCES, Context.MODE_PRIVATE);
+  }
+
+  private long getNow() {
+    return Calendar.getInstance(MapboxConstants.MAPBOX_LOCALE).getTimeInMillis();
+  }
+
+  private @NonNull String generateSkuToken() {
+    return "placeholder"; // TODO
+  }
+}