[offline] Use a better temporary directory

Author: Clément Le Provost

algoliasearch/src/offline/java/com/algolia/search/saas/MirroredIndex.java

@@ -233,12 +233,6 @@ protected LocalIndex getLocalIndex() {
         return localIndex;
     }
 
-    private File getTempDir()
-    {
-        // TODO: Use better value
-        return getClient().getRootDataDir();
-    }
-
     private File getDataDir()
     {
         return new File(new File(getClient().getRootDataDir(), getClient().getApplicationID()), getIndexName());
@@ -435,7 +429,7 @@ public void run()
 
         try {
             // Create temporary directory.
-            tmpDir = new File(getTempDir(), UUID.randomUUID().toString());
+            tmpDir = new File(getClient().getTempDir(), UUID.randomUUID().toString());
             tmpDir.mkdirs();
 
             // NOTE: We are doing everything sequentially, because this is a background job: we care more about

algoliasearch/src/offline/java/com/algolia/search/saas/OfflineClient.java

@@ -127,6 +127,15 @@ public MirroredIndex initIndex(@NonNull String indexName)
         return rootDataDir;
     }
 
+    /**
+     * Get the path to the temporary directory used by this client.
+     *
+     * @return The path to the temporary directory.
+     */
+    protected @NonNull File getTempDir() {
+        return context.getCacheDir();
+    }
+
     /**
      * Enable the offline mode.
      * @param licenseData License for Algolia's SDK.