ngrx-model/source/model/baseModel.ts

Model classes for integrating ngrx store with a REST API

import { Observable, BehaviorSubject, Subscription } from 'rxjs';

import { HttpUtility } from '../http/http.service';
import { RequestService } from '../request/request.service';
import { INextHandler, IErrorHandler, ICompletionHandler } from './modelTypes';

export interface IBaseModelConfig<T> {
	url: string;
	transform?: any;
}

export class BaseModel<T> {
	protected dataStream$: BehaviorSubject<T>;

	url: string;
	requestService: RequestService;

	constructor(config: IBaseModelConfig<T>, requestService: RequestService) {
		this.url = config.url;
		this.requestService = requestService;
	}

	subscribe(onNext?: INextHandler<T>, onError?: IErrorHandler, onCompletion?: ICompletionHandler): Subscription {
		if (!this.dataStream$) {
			this.init();
		}

		return this.dataStream$.subscribe(onNext, onError, onCompletion);
	}

	init(): void {
		this.dataStream$ = new BehaviorSubject<T>(null);
		// make a request then push to stream
	}
}