/*
 * 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.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;

import com.jess.arms.base.delegate.IFragment;
import com.jess.arms.integration.cache.Cache;
import com.jess.arms.integration.cache.CacheType;
import com.jess.arms.integration.lifecycle.FragmentLifecycleable;
import com.jess.arms.mvp.IPresenter;
import com.jess.arms.utils.ArmsUtils;
import com.qmuiteam.qmui.arch.QMUIFragment;
import com.qmuiteam.qmui.arch.QMUIFragmentLazyLifecycleOwner;
import com.trello.rxlifecycle2.android.FragmentEvent;

import java.util.Observable;

import javax.inject.Inject;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;

import io.reactivex.Observer;
import io.reactivex.subjects.BehaviorSubject;
import io.reactivex.subjects.Subject;
import me.yokeyword.fragmentation.ExtraTransaction;
import me.yokeyword.fragmentation.ISupportFragment;
import me.yokeyword.fragmentation.SupportFragmentDelegate;
import me.yokeyword.fragmentation.SupportHelper;
import me.yokeyword.fragmentation.anim.FragmentAnimator;

/**
 * ================================================
 * 因为 Java 只能单继承,所以如果要用到需要继承特定 @{@link Fragment} 的三方库,那你就需要自己自定义 @{@link Fragment}
 * 继承于这个特定的 @{@link Fragment},然后再按照 {@link BaseFragment} 的格式,将代码复制过去,记住一定要实现{@link IFragment}
 * <p>
 * Created by JessYan on 22/03/2016
 * <a href="mailto:jess.yan.effort@gmail.com">Contact me</a>
 * <a href="https://github.com/JessYanCoding">Follow me</a>
 * ================================================
 */
public abstract class BaseFragment<P extends IPresenter> extends Fragment implements IFragment, ISupportFragment, FragmentLifecycleable {
    protected final String TAG = this.getClass().getSimpleName();
    private final BehaviorSubject<FragmentEvent> mLifecycleSubject = BehaviorSubject.create();
    private Cache<String, Object> mCache;
    protected Context mContext;
    @Inject
    @Nullable
    protected P mPresenter;//如果当前页面逻辑简单, Presenter 可以为 null
    private int mBindId = -1;

    final SupportFragmentDelegate mDelegate = new SupportFragmentDelegate(this);
    protected BaseFragmentActivity _mActivity;

    private Observable mObservable;

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

    public int getColor(int colorId){
        return ContextCompat.getColor(requireContext(), colorId);
    }

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

    @Override
    public SupportFragmentDelegate getSupportDelegate() {
        return mDelegate;
    }

    /**
     * Perform some extra transactions.
     * 额外的事务：自定义Tag，添加SharedElement动画，操作非回退栈Fragment
     */
    @Override
    public ExtraTransaction extraTransaction() {
        return mDelegate.extraTransaction();
    }

//    @Override
//    public void onAttach(Activity activity) {
//        super.onAttach(activity);
//        mDelegate.onAttach(activity);
//        _mActivity = (BaseFragmentActivity) mDelegate.getActivity();
//        mContext =  mDelegate.getActivity();
//    }

    @Override
    public void onAttach(@NonNull Context context) {
        super.onAttach(context);
        Activity activity = (Activity) context;
        mDelegate.onAttach(activity);
        _mActivity = (BaseFragmentActivity) mDelegate.getActivity();
        mContext = mDelegate.getActivity();
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mDelegate.onCreate(savedInstanceState);
    }

    @Override
    public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
        return mDelegate.onCreateAnimation(transit, enter, nextAnim);
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        mDelegate.onActivityCreated(savedInstanceState);
    }

//    @Override
//    protected View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container) {
//        mCacheRootView = initView(inflater, container, null);
//        return mCacheRootView;
//    }

    private View view;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        if (view != null) {
            ViewGroup viewGroup = (ViewGroup) view.getRootView();
            if (viewGroup != null) {
                viewGroup.removeView(view);
            }
            return view;
        }
        view = initView(inflater, container, savedInstanceState);
        return view;
    }

    @Nullable
    @Override
    public View getView() {
        return view;
    }

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

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mDelegate.onSaveInstanceState(outState);
    }

    @Override
    public void onResume() {
        super.onResume();
        mDelegate.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
        mDelegate.onPause();
    }

    @Override
    public void onDestroyView() {
        mDelegate.onDestroyView();
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        mDelegate.onDestroy();
        super.onDestroy();
        if (mPresenter != null) mPresenter.onDestroy();//释放资源
        this.mPresenter = null;
    }

    @Override
    public void onHiddenChanged(boolean hidden) {
        super.onHiddenChanged(hidden);
        mDelegate.onHiddenChanged(hidden);
    }

    @Override
    public void setUserVisibleHint(boolean isVisibleToUser) {
        super.setUserVisibleHint(isVisibleToUser);
        mDelegate.setUserVisibleHint(isVisibleToUser);
    }

    /**
     * Causes the Runnable r to be added to the action queue.
     * <p>
     * The runnable will be run after all the previous action has been run.
     * <p>
     * 前面的事务全部执行后 执行该Action
     *
     * @deprecated Use {@link #post(Runnable)} instead.
     */
    @Deprecated
    @Override
    public void enqueueAction(Runnable runnable) {
        mDelegate.enqueueAction(runnable);
    }

    /**
     * Causes the Runnable r to be added to the action queue.
     * <p>
     * The runnable will be run after all the previous action has been run.
     * <p>
     * 前面的事务全部执行后 执行该Action
     */
    @Override
    public void post(Runnable runnable) {
        mDelegate.post(runnable);
    }

    /**
     * Called when the enter-animation end.
     * 入栈动画 结束时,回调
     */
    @Override
    public void onEnterAnimationEnd(Bundle savedInstanceState) {
        mDelegate.onEnterAnimationEnd(savedInstanceState);
    }


    /**
     * Lazy initial，Called when fragment is first called.
     * <p>
     * 同级下的 懒加载 ＋ ViewPager下的懒加载  的结合回调方法
     */
    @Override
    public void onLazyInitView(@Nullable Bundle savedInstanceState) {
        mDelegate.onLazyInitView(savedInstanceState);
    }

    /**
     * Called when the fragment is visible.
     * 当Fragment对用户可见时回调
     * <p>
     * Is the combination of  [onHiddenChanged() + onResume()/onPause() + setUserVisibleHint()]
     */
    @Override
    public void onSupportVisible() {
        mDelegate.onSupportVisible();
    }

    /**
     * Called when the fragment is invivible.
     * <p>
     * Is the combination of  [onHiddenChanged() + onResume()/onPause() + setUserVisibleHint()]
     */
    @Override
    public void onSupportInvisible() {
        mDelegate.onSupportInvisible();
    }

    /**
     * Return true if the fragment has been supportVisible.
     */
    @Override
    final public boolean isSupportVisible() {
        return mDelegate.isSupportVisible();
    }

    /**
     * Set fragment animation with a higher priority than the ISupportActivity
     * 设定当前Fragmemt动画,优先级比在SupportActivity里高
     */
    @Override
    public FragmentAnimator onCreateFragmentAnimator() {
        return mDelegate.onCreateFragmentAnimator();
    }

    /**
     * 获取设置的全局动画 copy
     *
     * @return FragmentAnimator
     */
    @Override
    public FragmentAnimator getFragmentAnimator() {
        return mDelegate.getFragmentAnimator();
    }

    /**
     * 设置Fragment内的全局动画
     */
    @Override
    public void setFragmentAnimator(FragmentAnimator fragmentAnimator) {
        mDelegate.setFragmentAnimator(fragmentAnimator);
    }

    /**
     * 按返回键触发,前提是SupportActivity的onBackPressed()方法能被调用
     *
     * @return false则继续向上传递, true则消费掉该事件
     */
    @Override
    public boolean onBackPressedSupport() {
        return mDelegate.onBackPressedSupport();
    }

    /**
     * 类似 {@link Activity#setResult(int, Intent)}
     * <p>
     * Similar to {@link Activity#setResult(int, Intent)}
     *
     * @see #startForResult(ISupportFragment, int)
     */
    @Override
    public void setFragmentResult(int resultCode, Bundle bundle) {
        mDelegate.setFragmentResult(resultCode, bundle);
    }

    /**
     * 类似  {@link Activity#onActivityResult(int, int, Intent)}
     * <p>
     * Similar to {@link Activity#onActivityResult(int, int, Intent)}
     *
     * @see #startForResult(ISupportFragment, int)
     */
    @Override
    public void onFragmentResult(int requestCode, int resultCode, Bundle data) {
        mDelegate.onFragmentResult(requestCode, resultCode, data);
    }

    /**
     * 在start(TargetFragment,LaunchMode)时,启动模式为SingleTask/SingleTop, 回调TargetFragment的该方法
     * 类似 {@link Activity#onNewIntent(Intent)}
     * <p>
     * Similar to {@link Activity#onNewIntent(Intent)}
     *
     * @param args putNewBundle(Bundle newBundle)
     * @see #start(ISupportFragment, int)
     */
    @Override
    public void onNewBundle(Bundle args) {
        mDelegate.onNewBundle(args);
    }

    /**
     * 添加NewBundle,用于启动模式为SingleTask/SingleTop时
     *
     * @see #start(ISupportFragment, int)
     */
    @Override
    public void putNewBundle(Bundle newBundle) {
        mDelegate.putNewBundle(newBundle);
    }


    /****************************************以下为可选方法(Optional methods)******************************************************/
    // 自定制Support时，可移除不必要的方法

    /**
     * 隐藏软键盘
     */
    protected void hideSoftInput() {
        mDelegate.hideSoftInput();
    }

    /**
     * 显示软键盘,调用该方法后,会在onPause时自动隐藏软键盘
     */
    protected void showSoftInput(final View view) {
        mDelegate.showSoftInput(view);
    }

    /**
     * 加载根Fragment, 即Activity内的第一个Fragment 或 Fragment内的第一个子Fragment
     *
     * @param containerId 容器id
     * @param toFragment  目标Fragment
     */
    public void loadRootFragment(int containerId, ISupportFragment toFragment) {
        mDelegate.loadRootFragment(containerId, toFragment);
    }

    public void loadRootFragment(int containerId, ISupportFragment toFragment, boolean addToBackStack, boolean allowAnim) {
        mDelegate.loadRootFragment(containerId, toFragment, addToBackStack, allowAnim);
    }

    public void start(ISupportFragment toFragment) {
        mDelegate.start(toFragment);
    }

    /**
     * @param launchMode Similar to Activity's LaunchMode.
     */
    public void start(final ISupportFragment toFragment, @LaunchMode int launchMode) {
        mDelegate.start(toFragment, launchMode);
    }

    /**
     * Launch an fragment for which you would like a result when it poped.
     */
    public void startForResult(ISupportFragment toFragment, int requestCode) {
        mDelegate.startForResult(toFragment, requestCode);
    }

    /**
     * Start the target Fragment and pop itself
     */
    public void startWithPop(ISupportFragment toFragment) {
        mDelegate.startWithPop(toFragment);
    }

    /**
     * @see #popTo(Class, boolean)
     * +
     * @see #start(ISupportFragment)
     */
    public void startWithPopTo(ISupportFragment toFragment, Class<?> targetFragmentClass, boolean includeTargetFragment) {
        mDelegate.startWithPopTo(toFragment, targetFragmentClass, includeTargetFragment);
    }

    public void replaceFragment(ISupportFragment toFragment, boolean addToBackStack) {
        mDelegate.replaceFragment(toFragment, addToBackStack);
    }

    public void pop() {
        mDelegate.pop();
    }

    /**
     * Pop the last fragment transition from the manager's fragment
     * back stack.
     * <p>
     * 出栈到目标fragment
     *
     * @param targetFragmentClass   目标fragment
     * @param includeTargetFragment 是否包含该fragment
     */
    public void popTo(Class<?> targetFragmentClass, boolean includeTargetFragment) {
        mDelegate.popTo(targetFragmentClass, includeTargetFragment);
    }

    /**
     * 获取栈内的fragment对象
     */
    public <T extends ISupportFragment> T findChildFragment(Class<T> fragmentClass) {
        return SupportHelper.findFragment(getChildFragmentManager(), fragmentClass);
    }

}
