added gameboard model

app/src/main/java/com/wyattjmiller/tictactoeapp/Gameboard.kt

@@ -1,24 +1,88 @@
 package com.wyattjmiller.tictactoeapp
 
-class Gameboard() {
+class Gameboard {
+    private var mGameState: GameState
+    private var mGamePiece: GamePiece
+
     enum class GameState {
-        GameStart,
+        None,
         GamePlayerTurnX,
         GamePlayerTurnO,
         GamePlayerWinX,
         GamePlayerWinO,
-        GameExit
+        GameCat
     }
 
-    enum class GamePiece {
+    private enum class GamePiece {
         None,
         X,
         O
     }
 
+    fun startGame() {
+        this.mGameState = GameState.GamePlayerTurnX
+        this.mGamePiece = GamePiece.X
+    }
 
+    fun resetGame() {
+        mGameState = GameState.GamePlayerTurnX
+        mGamePiece = GamePiece.X
+    }
 
-    companion object { }
+    fun placePlayerPiece(): String {
+        return mGamePiece.toString()
+    }
 
-    init { }
+    fun updateState(gameState: MainActivity.GameOption) {
+        if (gameState == MainActivity.GameOption.Won) {
+            when (mGameState) {
+                GameState.GamePlayerTurnX -> {
+                    Stats().updateGamesWon(mGameState)
+                    mGameState = GameState.GamePlayerWinX
+                }
+                GameState.GamePlayerTurnO -> mGameState = GameState.GamePlayerWinO
+            }
+
+            Stats().updateGamesPlayed()
+        } else {
+            if (gameState == MainActivity.GameOption.Cats) mGameState = GameState.GameCat else {
+                when (mGameState) {
+                    GameState.GamePlayerTurnX -> mGameState = GameState.GamePlayerTurnO
+                    GameState.GamePlayerTurnO -> mGameState = GameState.GamePlayerTurnX
+                }
+                Stats().updatePiecePlaced()
+            }
+        }
+    }
+
+    fun updateGameText(): String {
+        return when (mGameState) {
+            GameState.GamePlayerTurnX -> "It's Player's X turn!"
+            GameState.GamePlayerTurnO -> "It's Player's O turn!"
+            GameState.GamePlayerWinX -> "Player X wins!"
+            GameState.GamePlayerWinO -> "Player O wins!"
+            GameState.GameCat -> "Cat's game!"
+            else -> ""
+        }
+    }
+
+    fun getNextPlayerPiece() {
+        when (mGamePiece) {
+            GamePiece.X -> {
+                mGamePiece = GamePiece.O
+            }
+            GamePiece.O -> {
+                mGamePiece = GamePiece.X
+            }
+            GamePiece.None -> {
+                // this shouldn't happen, ever
+                GamePiece.None
+            }
+        }
+    }
+
+    init {
+        this.mGameState = GameState.None
+        this.mGamePiece = GamePiece.None
+    }
 }