From 89ffd511000413257a54b276a23b1a931d0b22e2 Mon Sep 17 00:00:00 2001
From: MikunoNaka <bokuwakanojogahoshii@yahoo.com>
Date: Wed, 21 Jul 2021 23:51:04 +0530
Subject: implemented basic checking winner/draw in multiplayer

---
 src/server/index.js | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 89 insertions(+), 1 deletion(-)

diff --git a/src/server/index.js b/src/server/index.js
index f8b5ca7..31af8c4 100644
--- a/src/server/index.js
+++ b/src/server/index.js
@@ -4,16 +4,104 @@ const http = require('http').Server(app);
 const path = require('path');
 const io = require('socket.io')(http);
 
-app.use(express.static(path.join(__dirname, '../../build')));
+const allEqual = (arr) =>
+  arr.includes(2) ? false : arr.every(i => i === arr[0])
+
+const getRow = (board, r) => board.slice(r * 3, (r * 3) + 3);
+const getRows = (board, r = 0) =>
+  r <= 2 ? [getRow(board, r)].concat(getRows(board, r+1)) : getRow(board, r)
+
+const getCol = (board, c) => board.map((i) => i[c])
+const getCols = (rows, c = 0) =>
+  c < 2 ? [getCol(rows, c)].concat(getCols(rows, c+1)) : [getCol(rows, c)]
+
+const getLeftDiagonal = (board, i = 0) =>
+  i < 3 ? [getRow(board, i)[i]].concat(getLeftDiagonal(board, i+1)) : [];
+
+const getRightDiagonal = (board, i = 2) =>
+  i >= 0 ? [getRow(board, 2-i)[i]].concat(getRightDiagonal(board, i-1)) : [];
+
+// const endGame = (winner: number) => {
+//   const gameWinner = winner < 2 ? (winner === 1 ? "X" : "O") : "Draw";
+//   props.setMessage(`WINNER: ${gameWinner}`);
+//   props.setShowMessage(true);
+//   gameWinner === "Draw" || (gameWinner === "X"
+//     ? props.setScoreX(props.scoreX + 1)
+//     : props.setScoreO(props.scoreO + 1));
+//   setBoard([2,2,2,2,2,2,2,2,2]);
+//   winner < 2 && props.setTurn(winner); // set turn to prev. winner
+// }
+// 
+// useEffect(() => {
+//   if (board.includes(0) || board.includes(1)) {
+//     const rows = getRows();
+//     (rows.some((i: number[]) => allEqual(i))
+//       || getCols(rows).some((i: number[]) => allEqual(i))
+//       || [getLeftDiagonal(), getRightDiagonal()].some((i) => allEqual(i))
+//     ) ? endGame(turn === 0 ? 1 : 0) : (board.includes(2) || endGame(2));
+//   }
+// });
 
 io.on('connection', (socket) => {
   socket.on('update-remote-board', (board) => {
+    if (board.includes(0) || board.includes(1)) {
+      const rows = getRows(board);
+      (rows.some((i) => allEqual(i))
+        || getCols(rows).some((i) => allEqual(i))
+        || [getLeftDiagonal(board), getRightDiagonal(board)].some((i) => allEqual(i))
+      ) ? console.log("win") : (board.includes(2) || console.log("maybe draw"))
+      // ? endGame(turn === 0 ? 1 : 0) : (board.includes(2) || endGame(2));
+    }
     io.emit('update-client-board', board)
   })
 });
 
+// serve static front end
+app.use(express.static(path.join(__dirname, '../../build')));
+
 // Start the server
 const PORT = process.env.PORT || 5000;
 http.listen(PORT, () => {
     console.log(`App listening on port ${PORT}`);
 });
+
+
+/*
+ *   const allEqual = (arr: number[]) =>
+    arr.includes(2) ? false : arr.every(i => i === arr[0])
+
+  const getRow = (r: number) => board.slice(r * 3, (r * 3) + 3);
+  const getRows: any = (r: number = 0) =>
+    r <= 2 ? [getRow(r)].concat(getRows(r+1)) : getRow(r)
+
+  const getCol = (arr: number[][], c: number) => arr.map((i: any) => i[c])
+  const getCols: any = (rows: number[][], c: number = 0) =>
+    c < 2 ? [getCol(rows, c)].concat(getCols(rows, c+1)) : [getCol(rows, c)]
+
+  const getLeftDiagonal: any = (i: number = 0) =>
+    i < 3 ? [getRow(i)[i]].concat(getLeftDiagonal(i+1)) : [];
+
+  const getRightDiagonal: any = (i: number = 2) =>
+    i >= 0 ? [getRow(2-i)[i]].concat(getRightDiagonal(i-1)) : [];
+
+  const endGame = (winner: number) => {
+    const gameWinner = winner < 2 ? (winner === 1 ? "X" : "O") : "Draw";
+    props.setMessage(`WINNER: ${gameWinner}`);
+    props.setShowMessage(true);
+    gameWinner === "Draw" || (gameWinner === "X"
+      ? props.setScoreX(props.scoreX + 1)
+      : props.setScoreO(props.scoreO + 1));
+    setBoard([2,2,2,2,2,2,2,2,2]);
+    winner < 2 && props.setTurn(winner); // set turn to prev. winner
+  }
+
+  useEffect(() => {
+    if (board.includes(0) || board.includes(1)) {
+      const rows = getRows();
+      (rows.some((i: number[]) => allEqual(i))
+        || getCols(rows).some((i: number[]) => allEqual(i))
+        || [getLeftDiagonal(), getRightDiagonal()].some((i) => allEqual(i))
+      ) ? endGame(turn === 0 ? 1 : 0) : (board.includes(2) || endGame(2));
+    }
+  });
+  */
-- 
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