Subversion Repositories SmartDukaan

package in.shop2020.support.controllers;

import in.shop2020.support.services.PaymentDetailsGenerator;
import in.shop2020.support.utils.ReportsUtils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

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

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.util.ServletContextAware;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class PaymentReconciliationController implements ServletRequestAware, ServletResponseAware, ServletContextAware {

    private static Logger logger = LoggerFactory.getLogger(PaymentReconciliationController.class);
    
    private HttpServletRequest request;
    private HttpSession session;
    private HttpServletResponse response;
    private ServletContext context;
    
    private String errorMsg = "";
    private final String authsuccess = "authsuccess";
    public PaymentReconciliationController() {

    }

    public String index() {
        if(!ReportsUtils.canAccessReport((Long)session.getAttribute(ReportsUtils.ROLE), request.getServletPath())) {
            return "authfail";
        }
        return authsuccess;
    }

    // Handles the POST request (Form Submission)
    public String create() {
        // Formatting Form input parameters
        String startDateStr = request.getParameter("startDate");
        String endDateStr = request.getParameter("endDate");
        DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
        Date startDate = null, endDate = null;
        try {
            startDate = df.parse(startDateStr);
            endDate = df.parse(endDateStr);
            Calendar cal = Calendar.getInstance();
            cal.setTime(endDate);
            cal.add(Calendar.DATE, 1);
            endDate.setTime(cal.getTimeInMillis());
        } catch (ParseException pe) {
            errorMsg = "Please enter start and end dates in format dd/MM/yyyy";
            return authsuccess;
        } catch (NumberFormatException nfe) {
            errorMsg = "Please select payment status";
            return authsuccess;
        }

        PaymentDetailsGenerator paymentDetailGenerator = new PaymentDetailsGenerator();
        ByteArrayOutputStream baos = paymentDetailGenerator.generatePaymentReconciliationReport(startDate, endDate);

        if (baos == null) {
            errorMsg = "No payments were captured in the given date range";
            return authsuccess;
        } else {
            errorMsg = "Generating report...";
        }

        // Preparing XLS file for output
                DateFormat dateFormatForFile = new SimpleDateFormat("dd.MM.yyyy");
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-disposition", "inline; filename=payments-reconciliation-" + dateFormatForFile.format(startDate) + "-" + dateFormatForFile.format(endDate) + ".xls");
        ServletOutputStream sos;
        try {
            sos = response.getOutputStream();
            baos.writeTo(sos);
            sos.flush();
            errorMsg = "Report generated";
        } catch (IOException e) {
            errorMsg = "Failed to write to response.";
            logger.error("Unable to stream the payment details report", e);
        }
        return authsuccess;
    }

    public String getErrorMsg() {
        return errorMsg;
    }

    @Override
    public void setServletRequest(HttpServletRequest req) {
        this.request = req;
        this.session = req.getSession();        
    }

    @Override
    public void setServletResponse(HttpServletResponse res) {
        this.response = res;
    }
    
    @Override
    public void setServletContext(ServletContext context) {
        this.context = context;
    }

    public String getServletContextPath() {
        return context.getContextPath();
    }
}