add migration for numberOfRebuys and compute function to calculate it

app/src/main/java/net/pokeranalytics/android/model/migrations/PokerAnalyticsMigration.kt

@@ -60,7 +60,9 @@ class PokerAnalyticsMigration : RealmMigration {
             }
 
             schema.get("Session")?.let {
-                it.addField("blinds", String::class.java)
+                it.addField("blinds", String::class.java).transform {
+
+                }
             }
 
             schema.get("FilterCondition")?.let {
@@ -89,6 +91,15 @@ class PokerAnalyticsMigration : RealmMigration {
             currentVersion++
 		}
 
+        // Migrate to version 3
+        if (currentVersion == 3) {
+            Timber.d("*** Running migration ${currentVersion + 1}")
+
+            schema.get("Result")?.let {
+                it.addField("numberOfRebuy", Double::class.java).setNullable("numberOfRebuy", true)
+            }
+            currentVersion++
+        }
 	}
 
 	override fun equals(other: Any?): Boolean {

app/src/main/java/net/pokeranalytics/android/model/realm/Result.kt

@@ -87,7 +87,7 @@ open class Result : RealmObject(), Filterable {
     var tournamentFinalPosition: Int? = null
 
     // Number of rebuys
-    //var numberOfRebuy: Double? = null
+    var numberOfRebuy: Double? = null
 
 	@LinkingObjects("result")
 	private val sessions: RealmResults<Session>? = null
@@ -123,6 +123,25 @@ open class Result : RealmObject(), Filterable {
 
     // Computes the number of rebuy
     private fun computeNumberOfRebuy() {
+        this.session?.let {
+            if (it.isCashGame()) {
+                it.cgBigBlind?.let { bb ->
+                    if (bb > 0.0) {
+                        this.numberOfRebuy = (this.buyin ?: 0.0) / bb
+                    } else {
+                        this.numberOfRebuy = null
+                    }
+                }
+            } else {
+                it.tournamentEntryFee?.let { entryFee ->
+                    if (entryFee > 0.0) {
+                        this.numberOfRebuy = (this.buyin ?: 0.0) / entryFee
+                    } else {
+                        this.numberOfRebuy = null
+                    }
+                }
+            }
+        }
     }
 
 	// @todo tips?