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import { call, put, take } from 'redux-saga/effects'
import { eventChannel } from 'redux-saga'
import { fromJS } from 'immutable'
import { push } from 'react-router-redux'
import { normalize } from 'normalizr'
import gameSchema from '../schemas/games'
import { actions as gameActions, types } from '../redux/games'
import { actions as playerActions } from '../redux/players'
function gameBrowserChannel(socket) {
return eventChannel(emit => {
const makeHandler = type => event => {
const response = fromJS(JSON.parse(event.body))
emit({ type, response })
}
const newGame = socket.subscribe('/topic/games', makeHandler(types.CREATE_OR_UPDATE_GAMES))
const joinGame = socket.subscribe('/user/queue/lobby/joined', makeHandler(types.JOIN_GAME))
return () => {
newGame.unsubscribe()
joinGame.unsubscribe()
}
})
}
export function *watchGames({ socket }) {
const socketChannel = gameBrowserChannel(socket)
try {
while (true) {
const { type, response } = yield take(socketChannel)
switch (type) {
case types.CREATE_OR_UPDATE_GAMES:
const normalizedResponse = normalize(response.toJS(), gameSchema)
yield put(playerActions.setPlayers(fromJS(normalizedResponse.entities.players)))
yield put(gameActions.createOrUpdateGame(fromJS(normalizedResponse.entities.games)))
break
case types.JOIN_GAME:
yield put(gameActions.joinGame(response))
socketChannel.close()
yield put(push(`/lobby/${response.id}`))
break
default:
console.error('Unknown type')
}
}
} finally {
console.info('gameBrowserChannel closed')
}
}
export function *createGame({ socket }) {
const { name } = yield take(types.CREATE_GAME)
socket.send("/app/lobby/create", JSON.stringify({ gameName: name }), {})
}
export function *gameBrowserSaga(socketConnection) {
yield [
call(watchGames, socketConnection),
call(createGame, socketConnection)
]
}
export default gameBrowserSaga
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