package com.tenwa.app.invoice.servlet;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLDecoder;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.amarsoft.are.ARE;
import com.amarsoft.are.util.DataConvert;
import com.amarsoft.awe.Configure;
import com.tenwa.util.SecurityUtil;

public class InvoiceDownloadServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public InvoiceDownloadServlet() {
		super();
	}

	@Override
	protected void service(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		try {
			HttpSession session = request.getSession(true);
			if ((session == null) || (session.getAttributeNames() == null)) {
				throw new Exception("------Timeout------");
			}
			Configure CurConfig = Configure.getInstance(session.getServletContext());
			if (CurConfig == null) {
				throw new ServletException("读取配置文件错误！请检查配置文件。");
			}
			String localFile = CurConfig.getConfigure("INVOICE_LOCAL_PATH");
			String path = DataConvert.toString(request.getParameter("path"));
			path = SecurityUtil.detrypt(path, "invoice");
			localFile = localFile + path;

			File file = new File(localFile);
			if (!file.exists())
				throw new Exception("文件不存在");
			SimpleDateFormat dateFormat = new SimpleDateFormat("YYYYMMddHHmmss");
			String filename = dateFormat.format(new Date()) + ".pdf";
			response.setContentType(getServletContext().getMimeType(filename));
			response.setHeader("Content-Disposition", "attachment;filename=" + filename);
			InputStream in = new FileInputStream(localFile);
			OutputStream out = response.getOutputStream();
			int b;
			while ((b = in.read()) != -1) {
				out.write(b);
			}
			in.close();
			out.close();
		} catch (Exception e) {
			ARE.getLog().error("AttachmentView SQL Error:", e);
		}
	}
}