Files
freeCodeCamp/common/app/routes/Settings/redux/update-user-epic.js
2017-12-07 00:00:02 +05:30

124 lines
3.8 KiB
JavaScript

import { Observable } from 'rx';
import { combineEpics, ofType } from 'redux-epic';
import { types, onRouteSettings } from './';
import { makeToast } from '../../../Toasts/redux';
import {
fetchChallenges,
doActionOnError,
userSelector
} from '../../../redux';
import {
updateUserFlag,
updateUserEmail,
updateUserLang
} from '../../../entities';
import { postJSON$ } from '../../../../utils/ajax-stream';
import langs from '../../../../utils/supported-languages';
const urlMap = {
isLocked: 'lockdown',
isAvailableForHire: 'available-for-hire',
sendQuincyEmail: 'quincy-email',
sendNotificationEmail: 'notification-email',
sendMonthlyEmail: 'announcement-email'
};
export function updateUserEmailEpic(actions, { getState }) {
return actions::ofType(types.updateMyEmail)
.flatMap(({ payload: email }) => {
const {
app: { user: username, csrfToken: _csrf },
entities: { user: userMap }
} = getState();
const { email: oldEmail } = userMap[username] || {};
const body = { _csrf, email };
const optimisticUpdate = Observable.just(
updateUserEmail(username, email)
);
const ajaxUpdate = postJSON$('/update-my-email', body)
.map(({ message }) => makeToast({ message }))
.catch(doActionOnError(() => oldEmail ?
updateUserEmail(username, oldEmail) :
null
));
return Observable.merge(optimisticUpdate, ajaxUpdate);
});
}
export function updateUserLangEpic(actions, { getState }) {
const updateLang = actions
.filter(({ type, payload }) => (
type === types.updateMyLang && !!langs[payload]
))
.map(({ payload }) => {
const state = getState();
const { languageTag } = userSelector(state);
return { lang: payload, oldLang: languageTag };
});
const ajaxUpdate = updateLang
.debounce(250)
.flatMap(({ lang, oldLang }) => {
const { app: { user: username, csrfToken: _csrf } } = getState();
const body = { _csrf, lang };
return postJSON$('/update-my-lang', body)
.flatMap(({ message }) => {
return Observable.of(
// show user that we have updated their lang
makeToast({ message }),
// update url to reflect change
onRouteSettings({ lang }),
// refetch challenges in new language
fetchChallenges()
);
})
.catch(doActionOnError(() => {
return updateUserLang(username, oldLang);
}));
});
const optimistic = updateLang
.map(({ lang }) => {
const { app: { user: username } } = getState();
return updateUserLang(username, lang);
});
return Observable.merge(ajaxUpdate, optimistic);
}
export function updateUserFlagEpic(actions, { getState }) {
const toggleFlag = actions
.filter(({ type, payload }) => type === types.toggleUserFlag && payload)
.map(({ payload }) => payload);
const optimistic = toggleFlag.map(flag => {
const { app: { user: username } } = getState();
return updateUserFlag(username, flag);
});
const serverUpdate = toggleFlag
.debounce(500)
.flatMap(flag => {
const url = `/toggle-${urlMap[ flag ]}`;
const {
app: { user: username, csrfToken: _csrf },
entities: { user: userMap }
} = getState();
const user = userMap[username];
const currentValue = user[ flag ];
return postJSON$(url, { _csrf })
.map(({ flag, value }) => {
if (currentValue === value) {
return null;
}
return updateUserFlag(username, flag);
})
.catch(doActionOnError(() => {
return updateUserFlag(username, currentValue);
}));
});
return Observable.merge(optimistic, serverUpdate);
}
export default combineEpics(
updateUserFlagEpic,
updateUserEmailEpic,
updateUserLangEpic
);