bits variants calc

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

@@ -9,11 +9,13 @@ import com.biganto.visual.roompark.data.repository.file.FileModule
 import com.biganto.visual.roompark.data.repository.mapper.fromRaw
 import com.biganto.visual.roompark.data.repository.mapper.fromRawList
 import com.biganto.visual.roompark.domain.contract.FlatPlanContract
+import com.biganto.visual.roompark.domain.model.FeatureModel
 import com.biganto.visual.roompark.domain.model.PlanPresetModel
 import com.biganto.visual.roompark.domain.model.fromEntity
 import io.reactivex.Observable
 import io.reactivex.schedulers.Schedulers
 import timber.log.Timber
+import java.util.*
 import javax.inject.Inject
 
 /**
@@ -144,13 +146,41 @@ class PlanRepository @Inject constructor(
 
 }
 
+private fun BitSet.getOrNull(index:Int) =
+    if (index<0 || index>=this.size()) null
+    else get(index)
 
 val PlanPresetModel.featuresVariants : List<PlanFeaturesVariant>
     get() {
         if (this.features.isNullOrEmpty()) return  arrayListOf()
-        val variants = this.features.size
-        return arrayListOf()
-    } //List9  PlanFeaturesVariant()
+        val maxInd = this.features.size
+        val variants = BitSet(maxInd).apply { for (i in 0 until size()) set(i,false) }
+
+        val f = features.indexOfFirst { it is FeatureModel.Furniture }
+        val s = features.indexOfFirst { it is FeatureModel.Sizes }
+        val e = features.indexOfFirst { it is FeatureModel.Electric }
+        val w = features.indexOfFirst { it is FeatureModel.Walls }
+
+        val trueBit = BitSet(1).apply { set(0,true) }
+        var firstRun  = true
+
+        val resList = mutableListOf<PlanFeaturesVariant>()
+
+        do{
+            if (firstRun) firstRun = false
+            else variants.and(trueBit)
+            val v = PlanFeaturesVariant(
+                estateId,planId,
+                furniture = variants.getOrNull(f),
+                sizes = variants.getOrNull(s),
+                electric = variants.getOrNull(e),
+                walls = variants.getOrNull(w)
+            )
+            resList.add(v)
+        }while (variants.cardinality() != variants.size())
+
+        return resList
+    }
 
 data class PlanFeaturesVariant(
     val estateId: Int,