package com.hikvision.building.cloud.neptune.community.biz.service;

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

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import com.fasterxml.jackson.core.type.TypeReference;
import com.hikvision.building.cloud.neptune.community.biz.Utils.FileUtils;
import com.hikvision.building.cloud.neptune.community.biz.Utils.JSONUtil;
import com.hikvision.building.cloud.neptune.community.biz.constant.Constant;
import com.hikvision.building.cloud.neptune.community.biz.vo.Province;


/**
 * 
 * @author xujian18
 * @version 2017年11月13日下午17:47
 * @since 2017年11月13日
 */
@Service
public class ProvinceCityService {
    @Autowired
    private StringRedisTemplate provinceTemplate;
    
    final List<Province> provinces=parseProvince("province/provinces.json");
    final List<Province> cities=parseProvince("province/cities.json");
    final List<Province> areas=parseProvince("province/areas.json");

    public List<Province> findProvinceCityByParentId(String parentId) {
        List<Province> all=new ArrayList<>();
        List<Province> news=new ArrayList<>();
        //缓存没有
        String j = provinceTemplate.opsForValue().get(Constant.PROVINCE_CITY_AREA );
        if(StringUtils.isBlank(j)){
            
            all.addAll(provinces);
            all.addAll(cities);
            all.addAll(areas);
            if(StringUtils.isBlank(parentId)){
                return provinces;
            }else{
                for(Province p:all){
                    if(StringUtils.isNotBlank(p.getParent_code())){
                        
                        if(p.getParent_code().equals(parentId)){
                            news.add(p);
                        }
                    }
                }
                String json = JSONUtil.toJson(all);
                provinceTemplate.opsForValue().set(Constant.PROVINCE_CITY_AREA , json ,1, TimeUnit.DAYS);
                return news;
            }
            
        }else{
            //缓存有
            TypeReference<List<Province>> typeReference = new TypeReference<List<Province>>(){};
            List<Province> collection = JSONUtil.toCollection(j, typeReference);
            for(Province p:collection){
                if(StringUtils.isNotBlank(p.getParent_code())){
                    if(p.getParent_code().equals(parentId)){
                        news.add(p);
                    }
                }else{
                    all.add(p);
                }
            }
            if(StringUtils.isBlank(parentId)){
                return all;
            }else{
                
                return news;
            }
        }
        
        
    }

    private List<Province> parseProvince(String area)  {
        String JsonContext = null;
        try {
            if(System.getProperty("os.name")!=null && System.getProperty("os.name").contains("Windows")){
                area = this.getClass().getClassLoader().getResource(area).getPath();
            }else{
                area = "/neptune-community/" + area;
            }
            JsonContext = new FileUtils().ReadFile(area);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        TypeReference<List<Province>> typeReference = new TypeReference<List<Province>>(){};
         List<Province> collection = JSONUtil.toCollection(JsonContext,typeReference );
         return collection;
    }

    public static void main(String[] args) {
        ProvinceCityService sss = new ProvinceCityService();
        System.out.println(sss.areas.size());
        System.out.println(sss.cities.size());
        System.out.println(sss.provinces.size());
    }
    
    

}

package com.hikvision.building.cloud.neptune.community.biz.Utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class FileUtils {
    public String ReadFile(String Path) throws IOException{
        BufferedReader reader = null;
        String laststr = "";
        try {
            File f = new File(Path);
            InputStream fileInputStream = new FileInputStream(f); 
            InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
            reader = new BufferedReader(inputStreamReader);
            String tempString = null;
            while ((tempString = reader.readLine()) != null) {
                laststr += tempString;
            }
            reader.close();
        } finally {
            if (reader != null) {
                reader.close();
            }
        }
        return laststr;
    }
}