package com.hainaos.vc.base.rx;

import android.os.Bundle;

import androidx.annotation.CallSuper;
import androidx.annotation.CheckResult;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

import com.trello.rxlifecycle4.LifecycleProvider;
import com.trello.rxlifecycle4.LifecycleTransformer;
import com.trello.rxlifecycle4.RxLifecycle;
import com.trello.rxlifecycle4.android.ActivityEvent;
import com.trello.rxlifecycle4.android.RxLifecycleAndroid;

import io.reactivex.rxjava3.core.Observable;
import io.reactivex.rxjava3.subjects.BehaviorSubject;

/**
 * {@link com.trello.rxlifecycle4.components.RxActivity}
 * copied form RxActivity}
 */
public abstract class BaseRxActivity extends AppCompatActivity implements LifecycleProvider<ActivityEvent> {
    private final BehaviorSubject<ActivityEvent> lifecycleSubject = BehaviorSubject.create();

    public BehaviorSubject<ActivityEvent> getLifecycleSubject() {
        return lifecycleSubject;
    }

    @Override
    @NonNull
    @CheckResult
    public final Observable<ActivityEvent> lifecycle() {
        return lifecycleSubject.hide();
    }

    @Override
    @NonNull
    @CheckResult
    public final <T> LifecycleTransformer<T> bindUntilEvent(@NonNull ActivityEvent event) {
        return RxLifecycle.bindUntilEvent(lifecycleSubject, event);
    }

    @Override
    @NonNull
    @CheckResult
    public final <T> LifecycleTransformer<T> bindToLifecycle() {
        return RxLifecycleAndroid.bindActivity(lifecycleSubject);
    }

    @Override
    @CallSuper
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        lifecycleSubject.onNext(ActivityEvent.CREATE);
    }

    @Override
    @CallSuper
    protected void onStart() {
        super.onStart();
        lifecycleSubject.onNext(ActivityEvent.START);
    }

    @Override
    @CallSuper
    protected void onResume() {
        super.onResume();
        lifecycleSubject.onNext(ActivityEvent.RESUME);
    }

    @Override
    @CallSuper
    protected void onPause() {
        lifecycleSubject.onNext(ActivityEvent.PAUSE);
        super.onPause();
    }

    @Override
    @CallSuper
    protected void onStop() {
        lifecycleSubject.onNext(ActivityEvent.STOP);
        super.onStop();
    }

    @Override
    @CallSuper
    protected void onDestroy() {
        lifecycleSubject.onNext(ActivityEvent.DESTROY);
        super.onDestroy();
    }
}

