1 files changed, 43 insertions, 0 deletions
diff --git a/frontend/src/redux/user.ts b/frontend/src/redux/user.ts
new file mode 100644
index 00000000..2cc25cc0
--- /dev/null
+++ b/frontend/src/redux/user.ts
@@ -0,0 +1,43 @@
+import { ApiPlayer } from '../api/model';
+import { GlobalState } from '../reducers';
+import { Action } from './actions/all';
+import { SET_CURRENT_PLAYER } from './actions/user';
+import { getCurrentGame } from './games';
+
+export type User = {
+  username: string,
+  displayName: string,
+}
+
+export const currentUserReducer = (state: User | null = null, action: Action) => {
+  switch (action.type) {
+    case SET_CURRENT_PLAYER:
+      return {
+        username: action.player.username,
+        displayName: action.player.displayName
+      };
+    default:
+      return state;
+  }
+};
+
+export function getCurrentUser(state: GlobalState): User | null {
+  return state.currentUser
+}
+
+export function getCurrentPlayer(state: GlobalState): ApiPlayer | null {
+  if (state.currentUser == null) {
+    return null;
+  }
+  let game = getCurrentGame(state);
+  if (game == null) {
+    return null;
+  }
+  for (let i = 0; i < game.players.length; i++) {
+    let player = game.players[i];
+    if (player.username === state.currentUser.username) {
+      return player;
+    }
+  }
+  return null;
+}