package com.example.Utils.fragment;

import android.app.Dialog;

import android.content.Context;

import android.graphics.Color;

import android.os.Bundle;

import android.view.*;

import android.widget.*;

import androidx.annotation.NonNull;

import com.example.Utils.R;

import com.example.Utils.adapter.CalendarAdapter;

import com.example.Utils.database.DBManager;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.List;

public class CalendarDialog extends Dialog implements View.OnClickListener {

    ImageView errorIv;

    GridView gv;

    LinearLayout hsvLayout;

    List<TextView>hsvViewList;

    List<Integer>yearList;

    int selectPos = -1;   //表示正在被点击的年份的位置

    private CalendarAdapter adapter;

    int selectMonth = -1;

    public interface OnRefreshListener{

        public void onRefresh(int selPos,int year,int month);

    }

    OnRefreshListener onRefreshListener;

    public void setOnRefreshListener(OnRefreshListener onRefreshListener) {

        this.onRefreshListener = onRefreshListener;

    }

    public CalendarDialog(@NonNull Context context, int selectPos, int selectMonth) {

        super(context);

        this.selectPos = selectPos;

        this.selectMonth = selectMonth;

    }

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.dialog_calendar);

        gv = findViewById(R.id.dialog_calendar_gv);

        errorIv = findViewById(R.id.dialog_calendar_iv);

        hsvLayout = findViewById(R.id.dialog_calendar_layout);

        errorIv.setOnClickListener(this);

        // 向横向的ScrollView当中添加View的方法

        addViewToLayout();

        initGridView();

        //设置GridView当中每一个item的点击事件

        setGVListener();

    }

    private void setGVListener() {

        gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override

            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                adapter.selPos = position;

                adapter.notifyDataSetInvalidated();

                int month = position + 1;

                int year = adapter.year;

                // 获取到被选中的年份和月份

                onRefreshListener.onRefresh(selectPos,year,month);

                cancel();

            }

        });

    }

    private void initGridView() {

        int selYear = yearList.get(selectPos);

        adapter = new CalendarAdapter(getContext(), selYear);

        if (selectMonth == -1) {

            int month = Calendar.getInstance().get(Calendar.MONTH);

            adapter.selPos = month;

        }else {

            adapter.selPos = selectMonth-1;

        }

        gv.setAdapter(adapter);

    }

    private void addViewToLayout() {

        hsvViewList = new ArrayList<>();   //将添加进入线性布局当中的TextView进行统一管理的集合

        yearList = DBManager.getYearListFromAccounttb(); //获取数据库当中存储了多少个年份

        //如果数据库当中没有记录，就添加今年的记录

        if (yearList.size() == 0) {

            int year = Calendar.getInstance().get(Calendar.YEAR);

            yearList.add(year);

        }

        //遍历年份，有几年，就向ScrollView当中添加几个view

        for (int i = 0; i < yearList.size(); i++) {

            int year = yearList.get(i);

            View view = getLayoutInflater().inflate(R.layout.item_dialogcal_hsv, null);

            hsvLayout.addView(view);   //将view添加到布局当中

            TextView hsvTv = view.findViewById(R.id.item_dialogcal_hsv_tv);

            hsvTv.setText(year+"");

            hsvViewList.add(hsvTv);

        }

        if (selectPos == -1) {

            selectPos = hsvViewList.size()-1;     //设置当前被选中的是最近的年份

        }

        changeTvbg(selectPos);    //将最后一个设置为选中状态

        setHSVClickListener();    //设置每一个View的监听事件

    }

    /** 给横向的ScrollView当中每一个TextView设置点击事件*/

    private void setHSVClickListener() {

        for (int i = 0; i < hsvViewList.size(); i++) {

            TextView view = hsvViewList.get(i);

            final int pos = i;

            view.setOnClickListener(new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    changeTvbg(pos);

                    selectPos = pos;

                    // 获取被选中的年份，然后下面的GridView显示数据源会发生变化

                    int year = yearList.get(selectPos);

                    adapter.setYear(year);

                }

            });

        }

    }

    /** 传入被选中的位置，改变此位置上的背景和文字颜色*/

    private void changeTvbg(int selectPos) {

        for (int i = 0; i < hsvViewList.size(); i++) {

            TextView tv = hsvViewList.get(i);

            tv.setBackgroundResource(R.drawable.dialog_btn_bg);

            tv.setTextColor(Color.BLACK);

        }

        TextView selView = hsvViewList.get(selectPos);

        selView.setBackgroundResource(R.drawable.main_recordbtn_bg);

        selView.setTextColor(Color.WHITE);

    }

    @Override

    public void onClick(View v) {

        switch (v.getId()) {

            case R.id.dialog_calendar_iv:

                cancel();

                break;

        }

    }

    /* 设置Dialog的尺寸和屏幕尺寸一致*/

    public void setDialogSize(){

//        获取当前窗口对象

        Window window = getWindow();

//        获取窗口对象的参数

        WindowManager.LayoutParams wlp = window.getAttributes();

//        获取屏幕宽度

        Display d = window.getWindowManager().getDefaultDisplay();

        wlp.width = (int)(d.getWidth());  //对话框窗口为屏幕窗口

        wlp.gravity = Gravity.TOP;

        window.setBackgroundDrawableResource(android.R.color.transparent);

        window.setAttributes(wlp);

    }

}