package com.coolweathertest.android;

import android.app.Fragment;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.coolweathertest.android.db.City;
import com.coolweathertest.android.db.County;
import com.coolweathertest.android.db.Province;
import com.coolweathertest.android.gson.Weather;
import com.coolweathertest.android.util.HttpUtil;
import com.coolweathertest.android.util.Utility;

import org.litepal.crud.DataSupport;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

/**
 * Created by Administrator on 2017/5/31 0031.
 */
public class chooseAreaFragment extends Fragment{

    public static final int LEVEL_PROVINCE=0;

    public static final int LEVEL_CITY=1;

    public static final int LEVEL_COUNTY=2;

    private ProgressDialog progressDialog;

    private TextView titleText;

    private Button backButton;

    private ListView listView;

    private ArrayAdapter<String> adapter;

    private List<String> dataList=new ArrayList<>();

    /**
     * 省列表
     */
    private List<Province> provinceList;

    /**
     * 市列表
     */
    private List<City> cityList;

    /**
     * 县列表
     */
    private List<County> countyList;

    /**
     * 选中的省份
     */
    private Province selectedProvince;

    /**
     * 选中的城市
     */
    private City selectedCity;

    /**
     * 当前选中的级别
     */
    private int currentLevel;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.choose_area,container,false);
        titleText=(TextView)view.findViewById(R.id.title_text);
        backButton=(Button)view.findViewById(R.id.back_button);
        listView=(ListView)view.findViewById(R.id.list_view);
        adapter=new ArrayAdapter<>(getContext(),android.R.layout.simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if(currentLevel==LEVEL_PROVINCE){
                    selectedProvince=provinceList.get(position);
                    queryCities();
                }else if(currentLevel==LEVEL_CITY){
                    selectedCity=cityList.get(position);
                    queryCounties();
                }else if(currentLevel==LEVEL_COUNTY){
                    String weatherId=countyList.get(position).getWeatherId();
                    if(getActivity() instanceof MainActivity) {
                        Intent intent = new Intent(getActivity(), WeatherActivity.class);
                        intent.putExtra("weather_id", weatherId);
                        startActivity(intent);
                        getActivity().finish();
                    }else if(getActivity() instanceof WeatherActivity){
                        WeatherActivity activity=(WeatherActivity)getActivity();
                        activity.drawerLayout.closeDrawers();
                        activity.swipeRefresh.setRefreshing(true);
                        activity.requestWeather(weatherId);
                    }
                }
            }
        });
        backButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(currentLevel==LEVEL_COUNTY){
                    queryCities();
                }else if(currentLevel==LEVEL_CITY){
                    queryProvinces();
                }
            }
        });
        queryProvinces();
    }

    private void queryProvinces(){
        titleText.setText("中国");
        backButton.setVisibility(View.GONE);
        provinceList= DataSupport.findAll(Province.class);
        if(provinceList.size()>0){
            dataList.clear();
            for(Province province:provinceList){
                dataList.add(province.getProvinceName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_PROVINCE;
        }else {
            String address="http://guolin.tech/api/china";
            queryFromServer(address,"province");
        }
    }

    private void queryCities(){
        titleText.setText(selectedProvince.getProvinceName());
        backButton.setVisibility(View.VISIBLE);
        cityList=DataSupport.where("provinceid=?",String.valueOf(selectedProvince.getId())).find(City.class);
        if(cityList.size()>0){
            dataList.clear();
            for(City city:cityList){
                dataList.add(city.getCityName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_CITY;
        }else {
            int provinceCode=selectedProvince.getProvinceCode();
            String address="http://guolin.tech/api/china/"+provinceCode;
            queryFromServer(address,"city");
        }
    }

    private void queryCounties(){
        titleText.setText(selectedCity.getCityName());
        backButton.setVisibility(View.VISIBLE);
        countyList=DataSupport.where("cityid=?",String.valueOf(selectedCity.getId())).find(County.class);
        if(countyList.size()>0){
            dataList.clear();
            for(County county:countyList){
                dataList.add(county.getCountyName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_COUNTY;
        }else{
            int provinceCode=selectedProvince.getProvinceCode();
            int cityCode=selectedCity.getCityCode();
            String address="http://guolin.tech/api/china/"+provinceCode+"/"+cityCode;
            queryFromServer(address,"county");
        }
    }

    private void queryFromServer(String address,final String type){
        showProgressDialog();
        HttpUtil.sendOkHttpRequest(address, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        closeProgressDialog();
                        Toast.makeText(getContext(),"加载失败",Toast.LENGTH_SHORT).show();
                    }
                });

            }
            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String responseText=response.body().string();
                boolean result=false;
                if("province".equals(type)){
                    result= Utility.handleProvinceResponse(responseText);
                }else if("city".equals(type)){
                    result=Utility.handleCityResponse(responseText,selectedProvince.getId());
                }else if("county".equals(type)){
                    result=Utility.handleCountyResponse(responseText,selectedCity.getId());
                }
                if(result){
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            closeProgressDialog();
                            if("province".equals(type)){
                                queryProvinces();
                            }else if("city".equals(type)){
                                queryCities();
                            }else if("county".equals(type)){
                                queryCounties();
                            }
                        }
                    });
                }else{
                    closeProgressDialog();
                }
            }
        });
    }

    private void showProgressDialog(){
        if(progressDialog==null){
            progressDialog=new ProgressDialog(getActivity());
            progressDialog.setMessage("正在加载...");
            progressDialog.setCanceledOnTouchOutside(false);
        }
        progressDialog.show();
    }

    private void closeProgressDialog(){
        if(progressDialog!=null){
            progressDialog.dismiss();
        }
    }

}
