plan cache

app/src/main/java/com/biganto/visual/roompark/data/data_provider/EstateRepository.kt

@@ -122,20 +122,34 @@ class EstateRepository @Inject constructor(
             ,walls?:false
             ,electric?:false)
             .map{
-                val sFile = FileModule.getDirectory(file.context
-                    ,FileModule.FileDirectory.PlanTypeDir(
+                val sFile = getPlanFile(
                         estateId = estateId,
                         planId = planId,
                         furniture = furniture,
                         walls = walls,
                         sizes = sizes,
-                        electric = electric
-                    ))
+                        electric = electric)
                 file.saveFileToDisk(sFile,it)
                 sFile.path
             }
             .subscribeOn(Schedulers.io())
 
+    private fun getPlanFile(estateId: Int
+                            , planId:Int
+                            , furniture:Boolean? = null
+                            , sizes:Boolean? = null
+                            , walls:Boolean? = null
+                            , electric:Boolean? = null)
+    = FileModule.getDirectory(file.context
+        ,FileModule.FileDirectory.PlanTypeDir(
+            estateId = estateId,
+            planId = planId,
+            furniture = furniture,
+            walls = walls,
+            sizes = sizes,
+            electric = electric
+        ))
+
 
     override fun getEmptyPlan(estateId: Int
                          ,planId:Int): Observable<String> =
@@ -149,17 +163,22 @@ class EstateRepository @Inject constructor(
                               , sizes:Boolean?
                               , walls:Boolean?
                               , electric:Boolean?): Observable<String> =
-        Observable.mergeDelayError(
-            arrayListOf(
-                getPlanApi(estateId
-                    ,planId
-                    , furniture
-                    , sizes
-                    , walls
-                    , electric
-                )
+        Observable.fromCallable { getPlanFile(
+            estateId = estateId,
+            planId = planId,
+            furniture = furniture,
+            walls = walls,
+            sizes = sizes,
+            electric = electric) }.switchMap {
+            if (it.exists()) Observable.just(it.path)
+            else getPlanApi(estateId
+                ,planId
+                , furniture
+                , sizes
+                , walls
+                , electric
             )
-        )
+        }
 
 
 //    fun getPlanRequestString(estateId: Int