/**
  * Copyright 2017 JessYan
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
package com.jess.arms.base;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.AttributeSet;
import android.view.View;

import com.jess.arms.base.delegate.IActivity;
import com.jess.arms.integration.cache.Cache;
import com.jess.arms.integration.cache.CacheType;
import com.jess.arms.integration.lifecycle.ActivityLifecycleable;
import com.jess.arms.mvp.IPresenter;
import com.jess.arms.utils.ArmsUtils;
import com.trello.rxlifecycle2.android.ActivityEvent;

import javax.inject.Inject;

import butterknife.ButterKnife;
import butterknife.Unbinder;
import io.reactivex.subjects.BehaviorSubject;
import io.reactivex.subjects.Subject;

import static com.jess.arms.utils.ThirdViewUtil.convertAutoView;

/**
 * ================================================
 * 因为 Java 只能单继承,所以如果要用到需要继承特定 {@link Activity} 的三方库,那你就需要自己自定义 {@link Activity}
 * 继承于这个特定的 {@link Activity},然后再按照 {@link BaseActivity} 的格式,将代码复制过去,记住一定要实现{@link IActivity}
 *
 * Created by JessYan on 22/03/2016
 * <a href="mailto:[email protected]">Contact me</a>
 * <a href="https://github.com/JessYanCoding">Follow me</a>
 * ================================================
 */
public abstract class BaseActivity<P extends IPresenter> extends AppCompatActivity implements IActivity, ActivityLifecycleable {
    protected final String TAG = this.getClass().getSimpleName();
    private final BehaviorSubject<ActivityEvent> mLifecycleSubject = BehaviorSubject.create();
    private Cache<String, Object> mCache;
    private Unbinder mUnbinder;
    @Inject
    protected P mPresenter;

    @NonNull
    @Override
    public synchronized Cache<String, Object> provideCache() {
        if (mCache == null) {
            mCache = ArmsUtils.obtainAppComponentFromContext(this).cacheFactory().build(CacheType.ACTIVITY_CACHE);
        }
        return mCache;
    }

    @NonNull
    @Override
    public final Subject<ActivityEvent> provideLifecycleSubject() {
        return mLifecycleSubject;
    }

    @Override
    public View onCreateView(String name, Context context, AttributeSet attrs) {
        View view = convertAutoView(name, context, attrs);
        return view == null ? super.onCreateView(name, context, attrs) : view;
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        try {
            int layoutResID = initView(savedInstanceState);
            if (layoutResID != 0) {//如果initView返回0,框架则不会调用setContentView(),当然也不会 Bind ButterKnife
                setContentView(layoutResID);
                //绑定到butterknife
                mUnbinder = ButterKnife.bind(this);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        initData(savedInstanceState);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mUnbinder != null && mUnbinder != Unbinder.EMPTY)
            mUnbinder.unbind();
        this.mUnbinder = null;
        if (mPresenter != null)
            mPresenter.onDestroy();//释放资源
        this.mPresenter = null;
    }

    /**
     * 是否使用eventBus,默认为使用(true)，
     *
     * @return
     */
    @Override
    public boolean useEventBus() {
        return true;
    }

    /**
     * 这个Activity是否会使用Fragment,框架会根据这个属性判断是否注册{@link android.support.v4.app.FragmentManager.FragmentLifecycleCallbacks}
     * 如果返回false,那意味着这个Activity不需要绑定Fragment,那你再在这个Activity中绑定继承于 {@link com.jess.arms.base.BaseFragment} 的Fragment将不起任何作用
     *
     * @return
     */
    @Override
    public boolean useFragment() {
        return true;
    }
}