package com.smartgwt.sample.showcase.server.exports;

import java.text.SimpleDateFormat;
import java.util.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletOutputStream;

import com.isomorphic.servlet.*;
import com.isomorphic.rpc.*;
import com.isomorphic.datasource.DSRequest;
import com.isomorphic.datasource.DSResponse;
import com.isomorphic.log.Logger;

public class CustomExportCustomResponseDMI {

private static Logger log = new Logger(DSRequest.class.getName());

public static void customExport(RPCManager rpc, HttpServletResponse response)
    throws Exception
    {
        try {
            // setting doCustomResponse() notifies the RPCManager that we'll bypass RPCManager.send
            // and instead write directly to the servletResponse output stream
            rpc.doCustomResponse();
    
            RequestContext.setNoCacheHeaders(response);
    
            response.setContentType("text/plain");
    
            DSRequest request = rpc.getDSRequest();
            String filename = request.getExportFilename();
            response.addHeader("content-disposition", "attachment; filename=" + filename);
    
            // fetch some data - this need not be from the dataSource this DMI was called from
            DSRequest req = new DSRequest("supplyItem", "fetch");
            Map criteria = new HashMap();
            criteria.put("category", "General Office Products");
            criteria.put("inStock", true);
            req.setCriteria(criteria);
            List results = req.execute().getDataList();
    
            StringBuilder content = new StringBuilder("" + results.size() + " 'General Office Products' in stock:\r\n\r\n");
            for (Iterator i = results.iterator(); i.hasNext(); ) {
                Map record = (Map)i.next();
                content.append((String)record.get("itemName"));
                content.append("\r\n");
            }
    
            ServletOutputStream os = response.getOutputStream();
            os.print(content.toString());
            os.flush();
        } catch (Exception e) {
            log.warn(e.getStackTrace());
        }

return;
    }

}