dbl-coins-invest/src/dynamodb/alerts.js

Sharade DBL package over other coins invest services

import { Investment, Portfolio, User, Account } from "../mysqldb/models";
import { Observable } from 'rxjs/Observable'
import { NotificationModel } from './schemas/notifications.schema';

const callback = (observer, error, response) => {
    if (!!error) {
        observer.error(response);
    } else {
        observer.next(response);
    }
    observer.complete();

};

export default class AlertsService {

    constructor(userSub) {
        if (!userSub)
            throw new Error('userSub have to be provided!!!!');
        this.userSub = userSub;
        this.model = Account;
    }

    getAll() {
        return Observable.create((observer) => {
            NotificationModel.scan('userSub').eq(this.userSub)
                .exec(callback.bind(null, observer))
        })

    }

    create(data) {
        return Observable.create((observer) => {
            NotificationModel.create(data, callback.bind(null, observer))
        })
    }

    getById(alertId) {
        return Observable.create((observer) => {
            NotificationModel.get({id: alertId, userSub: this.userSub}, callback.bind(null, observer))
        })
    }

    getByType(type) {
        return Observable.create((observer) => {

            NotificationModel
                .query('type')
                .eq(type)
                .where('userSub')
                .eq(this.userSub)
                .exec(callback.bind(null, observer))
        })
    }

    update(...args) {
        return Observable.create((observer) => {
            NotificationModel.update.call(NotificationModel, ...args, callback.bind(null, observer))
        })
    }

    delete(object) {
        return Observable.create((observer) => {
            NotificationModel.delete(object, callback.bind(null, observer))
        })
    }

    batchDelete(objects) {
        return Observable.create((observer) => {
            NotificationModel.batchDelete(objects, callback.bind(null, observer))
        })
    }

    batchPut(data) {
        return Observable.create((observer) => {
            NotificationModel.batchPut(data, callback.bind(null, observer));
        })
    }

}