Start CT as soon as config is available (#528)

Author: hborisoff

AndroidSDKCore/src/main/java/com/leanplum/Leanplum.java

@@ -64,6 +64,7 @@
 import com.leanplum.internal.VarCache;
 import com.leanplum.messagetemplates.MessageTemplates;
 import com.leanplum.migration.MigrationManager;
+import com.leanplum.migration.model.MigrationConfig;
 import com.leanplum.models.GeofenceEventType;
 import com.leanplum.utils.BuildUtil;
 import com.leanplum.utils.SharedPreferencesUtil;
@@ -237,6 +238,7 @@ public static void setAppIdForDevelopmentMode(String appId, String accessKey) {
 
     Constants.isDevelopmentModeEnabled = true;
     APIConfig.getInstance().setAppId(appId, accessKey);
+    MigrationConfig.setAppId(appId);
   }
 
   /**
@@ -258,6 +260,7 @@ public static void setAppIdForProductionMode(String appId, String accessKey) {
 
     Constants.isDevelopmentModeEnabled = false;
     APIConfig.getInstance().setAppId(appId, accessKey);
+    MigrationConfig.setAppId(appId);
   }
 
   /**

AndroidSDKCore/src/main/java/com/leanplum/internal/APIConfig.java

@@ -27,6 +27,7 @@
 import androidx.annotation.VisibleForTesting;
 import com.leanplum.Leanplum;
 import com.leanplum.internal.Constants.Defaults;
+import com.leanplum.internal.Constants.Params;
 import com.leanplum.utils.SharedPreferencesUtil;
 import java.util.Map;
 
@@ -103,6 +104,11 @@ public void setToken(String token) {
 
   private void load() {
     Context context = Leanplum.getContext();
+    if (context == null) {
+      Log.e("Leanplum context is null. Please call Leanplum.setApplicationContext(context) "
+          + "before anything else.");
+      return;
+    }
     SharedPreferences defaults = context.getSharedPreferences(
         Constants.Defaults.LEANPLUM, Context.MODE_PRIVATE);
 
@@ -131,6 +137,11 @@ private void load() {
 
   public void save() {
     Context context = Leanplum.getContext();
+    if (context == null) {
+      Log.e("Leanplum context is null. Please call Leanplum.setApplicationContext(context) "
+          + "before anything else.");
+      return;
+    }
     SharedPreferences defaults = context.getSharedPreferences(
         Constants.Defaults.LEANPLUM, Context.MODE_PRIVATE);
     SharedPreferences.Editor editor = defaults.edit();

AndroidSDKCore/src/main/java/com/leanplum/migration/model/MigrationConfig.kt

@@ -56,6 +56,9 @@ object MigrationConfig {
   var trackGooglePlayPurchases = true
     private set
 
+  @JvmStatic
+  var appId: String? by StringPreferenceNullable(key = "app_id")
+
   fun update(data: ResponseData) {
     state = data.state
     hash = data.hash

AndroidSDKCore/src/main/java/com/leanplum/migration/wrapper/WrapperFactory.kt

@@ -21,11 +21,15 @@
 
 package com.leanplum.migration.wrapper
 
+import android.content.Context
 import com.leanplum.Leanplum
 import com.leanplum.callbacks.CleverTapInstanceCallback
+import com.leanplum.internal.AESCrypt
+import com.leanplum.internal.Constants
 import com.leanplum.internal.LeanplumInternal
 import com.leanplum.internal.Log
 import com.leanplum.migration.model.MigrationConfig
+import com.leanplum.utils.getLeanplumPrefs
 import kotlin.system.measureTimeMillis
 
 internal object WrapperFactory {
@@ -38,16 +42,20 @@ internal object WrapperFactory {
       return NullWrapper
     }
 
-    if (!LeanplumInternal.hasCalledStart()) {
-      // giving access only to CT static methods, because Leanplum state is not fully initialised
-      return StaticMethodsWrapper
+    val context = Leanplum.getContext() ?: return StaticMethodsWrapper
+    val deviceId: String?
+    val userId: String?
+
+    if (LeanplumInternal.hasCalledStart()) {
+      deviceId = Leanplum.getDeviceId()
+      userId = Leanplum.getUserId()
+    } else {
+      val profile = getDeviceAndUserFromPrefs(context)
+      deviceId = profile.first
+      userId = profile.second
     }
 
-    val context = Leanplum.getContext()
-    val deviceId = Leanplum.getDeviceId()
-    val userId = Leanplum.getUserId()
-    if (context == null || deviceId == null) {
-      // giving access only to CT static methods, because Leanplum state is not fully initialised
+    if (deviceId == null) {
       return StaticMethodsWrapper
     }
 
@@ -59,4 +67,16 @@ internal object WrapperFactory {
     }
   }
 
+  private fun getDeviceAndUserFromPrefs(context: Context): Pair<String?, String?> {
+    val appId = MigrationConfig.appId ?: return Pair(null, null)
+
+    val sharedPrefs = context.getLeanplumPrefs()
+    val aesCrypt = AESCrypt(appId, null)
+
+    val deviceId = aesCrypt.decodePreference(sharedPrefs, Constants.Params.DEVICE_ID, null)
+    val userId = aesCrypt.decodePreference(sharedPrefs, Constants.Params.USER_ID, null)
+
+    return Pair(deviceId, userId)
+  }
+
 }