package com.hdl.photovoltaic.utils;

import android.text.TextUtils;

import java.util.List;

import androidx.annotation.IdRes;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.lifecycle.Lifecycle;

/**
 * Created by Tong on 2021/9/30.
 */
public class FragmentUtils {

    public static <T> Fragment findFragment(Class<T> fragmentClass, FragmentManager manager) {
        if (fragmentClass == null || manager == null) return null;
        for (Fragment fragment : manager.getFragments()) {
            if (fragment.getClass() == fragmentClass) {
                return fragment;
            }
        }
        return null;
    }

    public static Fragment findFragment(String tag, FragmentManager manager) {
        if (manager == null || TextUtils.isEmpty(tag)) return null;
        for (Fragment fragment : manager.getFragments()) {
            if (tag.equals(fragment.getTag())) {
                return fragment;
            }
        }
        return null;
    }

    public static void loadMultipleFragment(@IdRes int layoutId, FragmentManager manager, Fragment... fragments) {
        loadMultipleFragment(layoutId, 0, manager, fragments);
    }

    public static void loadMultipleFragment(@IdRes int layoutId, int showPosition, FragmentManager manager, Fragment... fragments) {
        if (manager == null || fragments.length == 0) return;

        removeAllFragments(manager);

        FragmentTransaction beginTransaction = manager.beginTransaction();

        for (int i = 0; i < fragments.length; i++) {
            Fragment fragment = fragments[i];
            if (fragment != null) {
                if (!fragment.isAdded()) {
                    beginTransaction.add(layoutId, fragment);
                }
                if (i == showPosition) {
                    beginTransaction.setMaxLifecycle(fragment, Lifecycle.State.RESUMED)
                            .show(fragment);
                } else {
                    beginTransaction.setMaxLifecycle(fragment, Lifecycle.State.CREATED)
                            .hide(fragment);
                }

            }
        }
        beginTransaction.commitAllowingStateLoss();
    }

    public static void showHideFragment(FragmentManager manager, Fragment showFragment) {
        if (manager == null) return;
        final List<Fragment> fragments = manager.getFragments();
        final FragmentTransaction beginTransaction = manager.beginTransaction();
        for (Fragment fragment : fragments) {
            if (fragment != showFragment) {
                beginTransaction
                        .setMaxLifecycle(fragment, Lifecycle.State.STARTED)
                        .hide(fragment);
            }
        }
        beginTransaction
                .setMaxLifecycle(showFragment, Lifecycle.State.RESUMED)
                .show(showFragment).commitAllowingStateLoss();

    }

    public static void removeAllFragments(FragmentManager manager) {
        if (manager == null) return;
        try {
            FragmentTransaction transaction = manager.beginTransaction();
            final List<Fragment> fragments = manager.getFragments();
            for (int i = 0; i < fragments.size(); i++) {
                Fragment fragment = fragments.get(i);
                if (fragment != null) {
//                    FragmentManager childManager = fragment.getChildFragmentManager();
//                    removeAllFragments(childManager);
                    transaction.remove(fragment);
                }
            }
            transaction.commitAllowingStateLoss();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}