package com.gdc.rxjava;

import java.util.concurrent.TimeUnit;

import rx.Observable;
import rx.Observable.OnSubscribe;
import rx.functions.Func1;
import rx.Subscriber;

public class TestFilting {

	public static void main(String[] args) {
		// testDebounce();
		// testDistinct();
		// testElementAt();
		// testFilter();
		// testFirst();
		// testIgnoreElements();
		// testLast();
		// testSample();
		// testSkip();
		// testTake();
		testTakeLast();
	}

	private static void testDebounce() {
		Observable.create(new OnSubscribe<Integer>() {

			@Override
			public void call(Subscriber<? super Integer> arg0) {
				try {
					for (int i = 0; i < 10; i++) {
						Thread.sleep(1000);
						arg0.onNext(i);
					}
					arg0.onCompleted();
				} catch (InterruptedException e) {
					arg0.onError(e);
				}
			}
		}).debounce(2, TimeUnit.SECONDS).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 testDistinct() {
		Observable.just(1, 2, 3, 2, 3).distinct().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 testElementAt() {
		Observable.just(1, 2, 3, 2, 3).elementAt(3).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 testFilter() {
		Observable.just(1, 2, 3, 2, 3).distinct().filter(new Func1<Integer, Boolean>() {

			@Override
			public Boolean call(Integer arg0) {
				// 在此指定過濾規則
				return arg0 > 2;
			}
		}).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 testFirst() {
		Observable.just(9, 2, 3, 2, 3).distinct().first().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 testIgnoreElements() {
		Observable.just(123).ignoreElements().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 testLast() {
		Observable.just(9, 2, 3, 2, 3).distinct().last().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 testSample() {
		Observable.create(new OnSubscribe<Integer>() {

			@Override
			public void call(Subscriber<? super Integer> arg0) {
				try {
					for (int i = 0; i < 10; i++) {
						Thread.sleep(1000);
						arg0.onNext(i);
					}
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}).sample(4, TimeUnit.SECONDS).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 testSkip() {
		Observable.just(1, 2, 3, 4, 5).skip(2).skipLast(2).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 testTake() {
		Observable.just(1, 2, 3, 4, 5).take(2).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 testTakeLast() {
		Observable.just(1, 2, 3, 4, 5).takeLast(2).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);
			}

		});
	}
}