1 files changed, 44 insertions, 0 deletions
diff --git a/frontend/src/sagas/lobby.ts b/frontend/src/sagas/lobby.ts
new file mode 100644
index 00000000..09360b02
--- /dev/null
+++ b/frontend/src/sagas/lobby.ts
@@ -0,0 +1,44 @@
+import { push } from 'react-router-redux';
+import { Channel, eventChannel, SagaIterator } from 'redux-saga';
+import { all, apply, call, put, take } from 'redux-saga/effects';
+import { SevenWondersSession } from '../api/sevenWondersApi';
+import { actions as gameActions, ENTER_LOBBY, REQUEST_START_GAME } from '../redux/actions/lobby';
+
+function* watchLobbyUpdates(session: SevenWondersSession, lobbyId: number): any {
+  const lobbyUpdatesChannel: Channel<Object> = yield eventChannel(session.watchLobbyUpdated(lobbyId));
+  try {
+    while (true) {
+      const lobby = yield take(lobbyUpdatesChannel);
+      yield put(gameActions.updateGames([lobby]));
+    }
+  } finally {
+    yield apply(lobbyUpdatesChannel, lobbyUpdatesChannel.close);
+  }
+}
+
+function* watchGameStart(session: SevenWondersSession, lobbyId: number): any {
+  const gameStartedChannel = yield eventChannel(session.watchGameStarted(lobbyId));
+  try {
+    yield take(gameStartedChannel);
+    yield put(gameActions.enterGame(lobbyId));
+    yield put(push(`/game/${lobbyId}`));
+  } finally {
+    yield apply(gameStartedChannel, gameStartedChannel.close);
+  }
+}
+
+function* startGame(session: SevenWondersSession): SagaIterator {
+  while (true) {
+    yield take(REQUEST_START_GAME);
+    yield apply(session, session.startGame);
+  }
+}
+
+export function* lobbySaga(session: SevenWondersSession): SagaIterator {
+  const { gameId } = yield take(ENTER_LOBBY);
+  yield all([
+    call(watchLobbyUpdates, session, gameId),
+    call(watchGameStart, session, gameId),
+    call(startGame, session)
+  ]);
+}