package framework.base;

import java.io.File;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import framework.fileUpload.FileUploadHelper;
import framework.fileUpload.FileUploadHelper.UploadFile;
import framework.mybatis.pageAction.PageUtil;
import framework.startup.FrameUtil;

/**
 * 全部控制器的基类，提供控制器的工具
 * 
 * @author liuyajun, 8384503@qq.com
 * @date 2016年1月13日
 * @time 上午8:32:35
 */

public abstract class FrameBaseController {

	/**
	 * 下载文件
	 * TODO: 需要保证能够使用中文URL
	 * 
	 * @param f
	 * @param name 另取名字
	 * @param delete
	 */
	public String downloadFile(File f, String name, boolean delete) {
		String furi = f.toURI().toString();
		String rootUri = new File(FrameUtil.getWebRoot()).toURI().toString();
		
		int pos = furi.indexOf(rootUri);
		if(pos==0 && !furi.contains("/WEB-INF/")){
			furi = furi.substring(rootUri.length());
			if(!furi.startsWith("/")){
				furi="/"+furi;
			}
			this.getRequest().setAttribute("downloadFileURL", furi);
		}
		this.getRequest().setAttribute("downloadFile", f);
		this.getRequest().setAttribute("downloadFileName", name);
		this.getRequest().setAttribute("downloadFileDelete", Boolean.valueOf(delete));
		
		return "forward:/frame-jsp/downloadFile.jsp";
	}
	/**
	 * 通过上传控件的名称过滤上传文件，<input type="file" name="inputName" ...
	 * @param uploadList
	 * @param inputName
	 * @return
	 */
	public List<UploadFile> getUploadFileByInputName(
			List<UploadFile> uploadList, String inputName){
		return FileUploadHelper.getUploadFileByInputName(uploadList, inputName);
	}
	
	/**
	 * 得到全部的上传文件
	 * @return
	 */
	public List<UploadFile> getAllUploadFile() {
		return FileUploadHelper.getAllUploadFile(this.getRequest());
	}
	/**
	 * 生成分页查询的参数，去调用正常的mybatis查询
	 * @param param 查询条件，可以为 null
	 * @return 
	 */
	public Map<String, Object> wrapPageSearchParam(Map<String,Object> param){
		return PageUtil.wrapPageSearchParamMap(this.getRequest(), param);
	}

	/**
	 * request.setAttribute(key, val);
	 * 
	 * @param key
	 * @param val
	 */
	public void setAttribute(String key, Object val){
		this.getRequest().setAttribute(key, val);
	}
	
    public HttpServletRequest getRequest(){
    	HttpServletRequest req = ((ServletRequestAttributes)
    			RequestContextHolder.getRequestAttributes()).getRequest();
    	return req;
    }

	public RuntimeException exception(Throwable t){
		return new RuntimeException(t);
	}
	
	public RuntimeException exception(String msg){
		return new RuntimeException(msg);
	}

	public boolean isEmpty(String str){
		return str==null || str.trim().length()==0;
	}

	/**
	 * 设置ajax返回内容，并且提供返回页面<br/>
	 * 用在 controller 中 String 返回类型(非@ResonseBody)的方法中
	 * @param content
	 * @return
	 */
	public String ajax(String content){
		HttpServletRequest req = getRequest();
		req.setAttribute("content", content);
		
		return "forward:/frame-jsp/ajax.jsp";
	}

}