package com.gdc.rxjava;

import rx.Observable;
import rx.Subscriber;
import rx.functions.Func2;

public class TestCombining {

	public static void main(String[] args) {
		// testZip();
		// testMerge();
		// startWith();
		testCombineLatest();
	}

	private static void testZip() {
		Observable<Integer> observable1 = Observable.just(10, 20, 30);
		Observable<Integer> observable2 = Observable.just(4, 8, 12, 16);
		Observable.zip(observable1, observable2, new Func2<Integer, Integer, Integer>() {

			@Override
			public Integer call(Integer arg0, Integer arg1) {
				return arg0 + arg1;
			}
		}).subscribe(new Subscriber<Integer>() {

			@Override
			public void onCompleted() {
				System.out.println("onCompleted()");
			}

			@Override
			public void onError(Throwable arg0) {
				System.out.println("onError():" + arg0);
			}

			@Override
			public void onNext(Integer arg0) {
				System.out.println("onNext():" + arg0);
			}

		});
	}

	private static void testMerge() {
		Observable<Integer> odds = Observable.just(1, 3, 5);
		Observable<Integer> events = Observable.just(2, 4, 6);
		Observable.merge(odds, events).subscribe(new Subscriber<Integer>() {

			@Override
			public void onCompleted() {
				System.out.println("onCompleted()");
			}

			@Override
			public void onError(Throwable arg0) {
				System.out.println("onError():" + arg0);
			}

			@Override
			public void onNext(Integer arg0) {
				System.out.println("onNext():" + arg0);
			}

		});
	}

	private static void startWith() {
		Observable<Integer> first = Observable.just(1, 3, 5);
		Observable<Integer> second = Observable.just(2, 4, 6);
		first.startWith(second).subscribe(new Subscriber<Integer>() {

			@Override
			public void onCompleted() {
				System.out.println("onCompleted()");
			}

			@Override
			public void onError(Throwable arg0) {
				System.out.println("onError():" + arg0);
			}

			@Override
			public void onNext(Integer arg0) {
				System.out.println("onNext():" + arg0);
			}

		});
	}

	private static void testCombineLatest() {
		Observable<Integer> first = Observable.just(1, 3, 5);
		Observable<Integer> second = Observable.just(2, 4, 6);
		first.combineLatest(first, second, new Func2<Integer, Integer, Integer>() {

			@Override
			public Integer call(Integer arg0, Integer arg1) {
				System.out.println("arg0:" + arg0 + " arg1:" + arg1);
				return arg0 + arg1;
			}
		}).subscribe(new Subscriber<Integer>() {

			@Override
			public void onCompleted() {
				System.out.println("onCompleted()");
			}

			@Override
			public void onError(Throwable arg0) {
				System.out.println("onError():" + arg0);
			}

			@Override
			public void onNext(Integer arg0) {
				System.out.println("onNext():" + arg0);
			}

		});
	}

}