package cn.flightfeather.thirdappmodule.activity;

import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.LinearLayout;

import java.util.ArrayList;
import java.util.List;

import cn.flightfeather.thirdappmodule.CommonApplication;
import cn.flightfeather.thirdappmodule.R;
import cn.flightfeather.thirdappmodule.adapter.ContentFragmentAdapter;
import cn.flightfeather.thirdappmodule.module.login.CardFragment;
import cn.flightfeather.thirdappmodule.util.updateApp.UpdateAppUtil;
import cn.flightfeather.thirdappmodule.view.OrientedViewPager;
import cn.flightfeather.thirdappmodule.view.VerticalStackTransformer;


public class LoginActivity extends AppCompatActivity implements ViewPager.OnPageChangeListener {

    //横向ViewPager
    private OrientedViewPager movp_main;
    //线性布局
    private LinearLayout mln;
    //卡片碎片
    private CardFragment fragmentCurrent;
    //内容碎片适配器
    private ContentFragmentAdapter adapter;
    //是否显示
    private Boolean show = false;
    //碎片集合
    public List<Fragment> fragmentList = new ArrayList<>();
    //当前位置
    private int positionCurrent = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
//        //将此Activity加入集合中
//        MyApplication.getInstance().addActivity(this);
        //初始化控件
        initControl();
        //创建内容碎片适配器
        createContentFragmentAdapter();
        //设置横向ViewPager
        setOrientationViewPager();
        //设置监听
        setListener();
        //初始化半透明状态栏
        initTransparentStatsBar();
        //更新检查
        checkUpdate();
    }


    private void setListener() {
        //设置ViewPager滑动监听
        movp_main.setOnPageChangeListener(this);
    }

    private void setOrientationViewPager() {
        movp_main.setOrientation(OrientedViewPager.Orientation.VERTICAL);
        movp_main.setOffscreenPageLimit(2);
        movp_main.setPageTransformer(true, (ViewPager.PageTransformer) new VerticalStackTransformer(this));
        movp_main.setAdapter(adapter);
        movp_main.setDisableTouch(true);
        SharedPreferences sharedPre = getSharedPreferences("config", MODE_PRIVATE);
        positionCurrent = sharedPre.getInt("pos", 0);
        //设置默认显示碎片
        fragmentCurrent = (CardFragment) adapter.instantiateItem(movp_main, positionCurrent);

    }

    private void createContentFragmentAdapter() {
        adapter = new ContentFragmentAdapter(getSupportFragmentManager(), getCardFragments());
    }

    protected ContentFragmentAdapter.onGetItemInterface getCardFragments() {
        return position -> {
            int a = position%3;
            if (a < 0) a = 0;
            return CardFragment.newInstance(a + 1, position);
        };
//        fragmentList.add(CardFragment.newInstance(1, 0));
//        fragmentList.add(CardFragment.newInstance(2, 1));
//        fragmentList.add(CardFragment.newInstance(3, 2));
    }

    private void initControl() {
        movp_main = (OrientedViewPager) findViewById(R.id.ovp_main);
        mln = (LinearLayout) findViewById(R.id.mln);
    }

    public void initTransparentStatsBar() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            this.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
            this.getWindow().setStatusBarColor(ContextCompat.getColor(this, R.color.transStatusBar));
            mln.setPadding(0, getStatusBarHeight(), 0, 0);
        }
    }

    public int getStatusBarHeight() {
        int result = 0;
        int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            result = getResources().getDimensionPixelSize(resourceId);
        }
        return result;
    }

    public void showButton() {
        //   fragmentCurrent = adapter.getCardFragment();
        fragmentCurrent.showLoginButton();
    }

    public void hideButton() {
        fragmentCurrent.hideLoginButtion();
    }

    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        if (position == 0 && positionOffsetPixels == 0) {
            show = true;
        } else {
            show = false;
        }
    }

    @Override
    public void onPageSelected(int position) {
        fragmentCurrent = (CardFragment) adapter.instantiateItem(movp_main, position);
        showButton();
        int a = position % 3;
        if (a == 0) {
            mln.setBackgroundColor(getResources().getColor(R.color.lightBlue));
            fragmentCurrent.changeLoginColor("#03A9F4");
        } else if (a == 1) {
            mln.setBackgroundColor(getResources().getColor(R.color.lightGreen));
            fragmentCurrent.changeLoginColor("#8BC34A");
        } else if (a == 2) {
            mln.setBackgroundColor(getResources().getColor(R.color.orange));
            fragmentCurrent.changeLoginColor("#f26d44");
        }
    }

    @Override
    public void onPageScrollStateChanged(int state) {
        if (state == 1) {

            hideButton();
        } else if (state == 2) {
            showButton();
        } else if (state == 0 && show) {
            showButton();
        }
    }

    public void setCurFragment(int pos) {
        movp_main.setCurrentItem(pos);
    }

    private void checkUpdate() {
        UpdateAppUtil updateAppUtil = new UpdateAppUtil((CommonApplication) getApplication(), this);
        updateAppUtil.checkUpdateApp(false);
    }

}