package com.coolweather.app.db;

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

import com.coolweather.app.model.City;
import com.coolweather.app.model.County;
import com.coolweather.app.model.Province;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

/**
 * @author xinyuncz.Tomson
 * @version ：
 * 2014-12-16 下午8:55:35
 */
public class CoolWeatherDB {

	/**
	 * 数据库名
	 */
	public static final String DB_NAME = "cool_weather";
	/**
	 * 数据库版本
	 */
	public static final int VERSION = 1;
	private static CoolWeatherDB coolWeatherDB;
	private SQLiteDatabase db;
	
	private CoolWeatherDB(Context context){
		CoolWeatherOpenHelper dbHelper = new CoolWeatherOpenHelper(context, DB_NAME, null,VERSION);
		db = dbHelper.getWritableDatabase();
	}
	
	public synchronized static CoolWeatherDB getInstance(Context context) {
		if (coolWeatherDB == null) {
			coolWeatherDB = new CoolWeatherDB(context);
		}
		return coolWeatherDB;
	}
	public void saveProvince(Province province){
		if (province != null) {
			ContentValues values = new ContentValues();
			values.put("province_name",province.getProvinceName());
			values.put("province_code", province.getProvinceCode());
			db.insert("Province", null, values);
		}
	}
	public List<Province> loadProvinces(){
		List<Province> provinces = new ArrayList<Province>();
		Cursor cursor = db.query("Province", null, null, null, null, null, null);
		if (cursor.moveToFirst()) {
			do{
				Province province = new Province();
				province.setId(cursor.getInt(cursor.getColumnIndex("id")));
				province.setProvinceName(cursor.getString(cursor.getColumnIndex("province_name")));
				province.setProvinceCode(cursor.getString(cursor.getColumnIndex("province_code")));
				provinces.add(province);
			}while(cursor.moveToNext());
		}
		if (cursor != null) {
			cursor.close();
		}
		return provinces;
	}
	public void saveCity(City city){
		if (city != null) {
			ContentValues values = new ContentValues();
			values.put("city_name",city.getCityName());
			values.put("city_code", city.getCityCode());
			values.put("province_id", city.getProvinceId());
			db.insert("City", null, values);
		}
	}
	public List<City> loadCities(int provinceId){
		List<City> cities = new ArrayList<City>();
		Cursor cursor = db.query("City", null, "province_id = ?", new String[]{String.valueOf(provinceId)}, null, null, null);
		if (cursor.moveToFirst()) {
			do{
				City city = new City();
				city.setId(cursor.getInt(cursor.getColumnIndex("id")));
				city.setCityName(cursor.getString(cursor.getColumnIndex("city_name")));
				city.setCityCode(cursor.getString(cursor.getColumnIndex("city_code")));
				city.setProvinceId(provinceId);
				cities.add(city);
			}while(cursor.moveToNext());
		}
		if (cursor != null) {
			cursor.close();
		}
		return cities;
	}
	public void saveCounty(County county){
		if (county != null) {
			ContentValues values = new ContentValues();
			values.put("county_name",county.getCountyName());
			values.put("county_code", county.getCountyCode());
			values.put("city_id",county.getCityId());
			db.insert("County", null, values);
		}
	}
	public List<County> loadCounties(int cityId){
		List<County> counties = new ArrayList<County>();
		Cursor cursor = db.query("County", null, "city_id = ?", new String[]{String.valueOf(cityId)}, null, null, null);
		if (cursor.moveToFirst()) {
			do{
				County county = new County();
				county.setCityId(cursor.getInt(cursor.getColumnIndex("id")));
				county.setCountyName(cursor.getString(cursor.getColumnIndex("county_name")));
				county.setCountyCode(cursor.getString(cursor.getColumnIndex("county_code")));
				county.setCityId(cityId);
				counties.add(county);
			}while(cursor.moveToNext());
		}
		if (cursor != null) {
			cursor.close();
		}
		return counties;
	}
}
