package com.farm.parameter;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.commons.lang.StringUtils;

import com.farm.core.ParameterService;
import com.farm.parameter.service.DictionaryEntityServiceInter;
import com.farm.parameter.service.ParameterServiceInter;
import com.farm.parameter.service.impl.ConstantVarService;
import com.farm.parameter.service.impl.PropertiesFileService;
import com.farm.parameter.service.impl.XmlConfigFileService;
import com.farm.util.spring.BeanFactory;

/**
 * 框架系统参数服务
 * 
 * @author Administrator
 * 
 */
public class FarmParameterService implements ParameterService {
	private static ParameterServiceInter parametersLocal;
	private static DictionaryEntityServiceInter dictionaryentitysLocal;
	private static ParameterService localstatic;

	/**
	 * @return
	 */
	public static ParameterService getInstance() {
		if (localstatic == null) {
			localstatic = new FarmParameterService();
		}
		return localstatic;
	}

	private ParameterServiceInter getParameterService() {
		if (parametersLocal == null) {
			parametersLocal = (ParameterServiceInter) BeanFactory.getBean("parameterServiceImpl");
		}
		return parametersLocal;
	}

	private DictionaryEntityServiceInter getDictionaryEntityService() {
		if (dictionaryentitysLocal == null) {
			dictionaryentitysLocal = (DictionaryEntityServiceInter) BeanFactory.getBean("dictionaryEntityServiceImpl");
		}
		return dictionaryentitysLocal;
	}

	@Override
	public Map<String, String> getDictionary(String key) {
		return getDictionaryEntityService().getDictionary(key);
	}

	@Override
	public List<Entry<String, String>> getDictionaryList(String key) {
		return getDictionaryEntityService().getDictionaryList(key);
	}

	@Override
	public String getParameter(String key) {
		return getParameter(key, null);
	}

	@Override
	public int getParameterInt(String key) {
		String val = getParameter(key, null);
		if (StringUtils.isNotBlank(val)) {
			return Integer.valueOf(val);
		}
		throw new RuntimeException("the parameter not exist![" + key + "]");
	}

	@Override
	public boolean getParameterBoolean(String key) {
		String val = getParameter(key, null);
		if (StringUtils.isBlank(val)) {
			throw new RuntimeException("the parameter not exist![" + key + "]");
		} else {
			if (val.trim().toUpperCase().equals("TRUE")) {
				return true;
			} else {
				return false;
			}
		}
	}

	@Override
	public String getParameter(String key, String userId) {
		key = key.trim();
		// 先找版本参数
		String value = null;
		// 再找用户参数和系统参数
		if (userId == null) {
			value = getParameterService().getValue(key);
		} else {
			value = getParameterService().getValue(key, userId);
		}
		if (value != null) {
			return value;
		}
		// 再找xml配置文件参数
		value = XmlConfigFileService.getValue(key);
		if (value != null) {
			return value;
		}
		// 再找properties文件参数
		value = PropertiesFileService.getValue(key);
		if (value != null) {
			return value;
		}
		// 找常量
		value = ConstantVarService.getValue(key);
		if (value != null) {
			return value;
		}
		throw new RuntimeException("无法获得参数:" + key);
	}

	@Override
	public List<String> getParameterStringList(String key) {
		String val = getParameter(key, null);
		if (StringUtils.isBlank(val)) {
			throw new RuntimeException("the parameter not exist![" + key + "]");
		} else {
			List<String> list = new ArrayList<>();
			String[] vals = val.replaceAll("，", ",").split(",");
			list.addAll(Arrays.asList(vals));
			return list;
		}
	}

}
