package com.electric.chargingpile.activity;

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;

import com.bumptech.glide.Glide;
import com.electric.chargingpile.R;
import com.electric.chargingpile.util.Bimp;
import com.electric.chargingpile.util.PublicWayFour;
import com.electric.chargingpile.util.PublicWayONE;
import com.electric.chargingpile.util.Res;
import com.electric.chargingpile.util.Util;
import com.electric.chargingpile.widge.photoview.PhotoView;
import com.electric.chargingpile.widge.photoview.ZoomingViewpager;
import com.luck.picture.lib.entity.LocalMedia;

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

public class ImageDisplayActivity extends AppCompatActivity implements View.OnClickListener {

    // 返回按钮
    private TextView back_bt;
    // 发送按钮
    private TextView send_bt;
    //删除按钮
    private TextView del_bt;
    //顶部显示预览图片位置的textview
    private TextView positionTextView;
    //获取前一个activity传过来的position
    private int position;


    private ArrayList<View> listViews = null;
    private ZoomingViewpager pager;
    private MyPageAdapter adapter;

    public List<Bitmap> bmp = new ArrayList<Bitmap>();
    public List<String> drr = new ArrayList<String>();
    public List<String> del = new ArrayList<String>();

    private Context mContext;

    RelativeLayout photo_relativeLayout;

    @Override
    protected void onCreate(@Nullable @org.jetbrains.annotations.Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_gallery_activity_alter);
        back_bt = (TextView) findViewById(R.id.gallery_back);
        send_bt = (TextView) findViewById(R.id.send_button);
        del_bt = (TextView) findViewById(R.id.gallery_del);
//        back_bt.setOnClickListener(new BackListener());
        send_bt.setOnClickListener(this);
        del_bt.setOnClickListener(this);
        // 为发送按钮设置文字
        pager = (ZoomingViewpager) findViewById(R.id.gallery01);
        pager.setBackgroundColor(getResources().getColor(R.color.white));

        initListViews(Bimp.tempSelectMedia);
        adapter = new MyPageAdapter(listViews);
        pager.setAdapter(adapter);
        pager.setOnPageChangeListener(pageChangeListener);
        pager.setPageMargin((int) getResources().getDimensionPixelOffset(Res.getDimenID("ui_10_dip")));

        position = getIntent().getIntExtra("position",0);
        pager.setCurrentItem(this.position);
        isShowOkBt();

    }
    private ViewPager.OnPageChangeListener pageChangeListener = new ViewPager.OnPageChangeListener() {

        @Override
        public void onPageSelected(int arg0) {
            send_bt.setText(Res.getString("finish") + "(" + (arg0 + 1) + "/" + Bimp.tempSelectMedia.size() + ")");
        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {

        }

        @Override
        public void onPageScrollStateChanged(int arg0) {

        }
    };

    public void isShowOkBt() {
        if (Bimp.tempSelectMedia.size() > 0) {
            send_bt.setPressed(true);
            send_bt.setClickable(true);
            send_bt.setText(Res.getString("finish") + "(" + (pager.getCurrentItem()+1) + "/" + Bimp.tempSelectMedia.size() + ")");

            send_bt.setTextColor(getResources().getColor(R.color.lvse));
        } else {
            send_bt.setPressed(false);
            send_bt.setClickable(false);
            send_bt.setTextColor(Color.parseColor("#E1E0DE"));
        }
    }
    private void initListViews(List<LocalMedia> list) {
        if (listViews == null)
            listViews = new ArrayList<View>();
        for (LocalMedia media:list){
            PhotoView img = new PhotoView(this);
            img.setBackgroundColor(0xffffffff);
            String path = Util.getCompressAbsolutePath(media);
            Glide.with(this)
                    .load(path)
                    .into(img);
            img.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.MATCH_PARENT));
            listViews.add(img);
        }
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.send_button:
                finish();
                break;

            case R.id.gallery_del:
                if (listViews.size() == 1) {
                    Bimp.tempSelectMedia.clear();
                    send_bt.setText(Res.getString("finish") + "(" + (pager.getCurrentItem()+1) + "/" + Bimp.tempSelectMedia.size() + ")");
                    finish();
                } else {
                    Bimp.tempSelectMedia.remove(pager.getCurrentItem());
                    pager.removeAllViews();
                    listViews.remove(pager.getCurrentItem());
                    adapter.setListViews(listViews);
                    adapter.notifyDataSetChanged();
                    send_bt.setText(Res.getString("finish") + "(" +  (pager.getCurrentItem()+1) + "/" + Bimp.tempSelectMedia.size() + ")");

                }
                break;
        }
    }

    class MyPageAdapter extends PagerAdapter {

        private ArrayList<View> listViews;

        private int size;

        public MyPageAdapter(ArrayList<View> listViews) {
            this.listViews = listViews;
            size = listViews == null ? 0 : listViews.size();
        }

        public void setListViews(ArrayList<View> listViews) {
            this.listViews = listViews;
            size = listViews == null ? 0 : listViews.size();
        }

        public int getCount() {
            return size;
        }

        public int getItemPosition(Object object) {
            return POSITION_NONE;
        }

        public void destroyItem(View arg0, int arg1, Object arg2) {
            ((ZoomingViewpager) arg0).removeView(listViews.get(arg1 % size));
        }

        public void finishUpdate(View arg0) {
        }

        public Object instantiateItem(View arg0, int arg1) {
            try {
                ((ZoomingViewpager) arg0).addView(listViews.get(arg1 % size), 0);

            } catch (Exception e) {
            }
            return listViews.get(arg1 % size);
        }

        public boolean isViewFromObject(View arg0, Object arg1) {
            return arg0 == arg1;
        }

    }

    public static void  actionStart(Context context,int position){
        Intent intent = new Intent(context, ImageDisplayActivity.class);
        intent.putExtra("position",position);
        context.startActivity(intent);
    }
}