import { call, put } from 'redux-saga/effects';
import { loginFailure, loginSuccess } from '../actions/auth.actions';
import { addMessage } from '../actions/message.actions';

export function* loginSaga(action) {
    let result;
    try {
        result = yield call(doLogin, action.username, action.password);
    } catch(err) {
        yield put(loginFailure(action.username, err));
        yield put(addMessage('danger', "Une erreur inconnue bloque le fonctionnement normal de l'application. Veuillez réessayer plus tard."));
    }

    if ('error' in result) {
        yield put(loginFailure(action.username, result.error));
        const message = result.error.message ? result.error.message : result.error.toString();
        yield put(addMessage('danger', message));
        return
    }

    yield put(loginSuccess(action.username));
}

function doLogin(username, password) {
    return fetch('http://localhost:8001/api/v1/login', {
        method: 'POST',
        body: JSON.stringify({
            username: username,
            password: password
        }),
        headers: {
            'Content-Type': 'application/json',
        },
        mode: 'cors',
        credentials: 'include'
    }).then(res => res.json())
}