Subversion Repositories SmartDukaan

/**

 * 

 */

package in.shop2020.support.controllers;

import in.shop2020.model.v1.catalog.InventoryServiceException;

import in.shop2020.support.utils.ReportsUtils;

import in.shop2020.thrift.clients.CatalogClient;

import in.shop2020.thrift.clients.WarehouseClient;

import in.shop2020.warehouse.Supplier;

import in.shop2020.warehouse.WarehouseServiceException;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.Calendar;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;

import org.apache.struts2.convention.annotation.InterceptorRef;

import org.apache.struts2.convention.annotation.InterceptorRefs;

import org.apache.struts2.convention.annotation.Result;

import org.apache.struts2.convention.annotation.Results;

import org.apache.struts2.interceptor.ServletRequestAware;

import org.apache.struts2.interceptor.ServletResponseAware;

import org.apache.thrift.TException;

import org.apache.thrift.transport.TTransportException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

@InterceptorRefs({

    @InterceptorRef("defaultStack"),

    @InterceptorRef("login")

})

@Results({

    @Result(name = "index", location = "raisePO-index.vm"),

    @Result(name = "result", location = "raisePO-result.vm")

})

public class RaisePOController implements ServletResponseAware, ServletRequestAware {

    private static Logger log = LoggerFactory.getLogger(RaisePOController.class);

    private File purchaseOrderDetails;

    private String vendorId;

    private String result;

    private HttpServletResponse response;

    private HttpServletRequest request;

    private HttpSession session;

    @Override

    public void setServletRequest(HttpServletRequest req) {

        this.request = req;

        this.session = req.getSession();

    }

    public String index() {

        if (!ReportsUtils.canAccessReport((Long) session.getAttribute(ReportsUtils.ROLE), request.getServletPath()))    {

            return "authfail";

        }        

        return "index";

    }

    /* MAIN METHOD TO TEST THE CODE 

     * 

     * public static void main(String[] args) {

        RaisePOController rpc = new RaisePOController();

        rpc.setPurchaseOrderDetails(new File("/home/anupam/Desktop/po.xls"));

        rpc.setVendorId("3");

        rpc.create();

        System.out.println(rpc.getResult());

    }*/

    public String create() {

        try {

            /*

             * Save the uploaded file to disk

             * 

             */

            FileInputStream is = new FileInputStream(purchaseOrderDetails);

            String filename = "/tmp/po-" +  Calendar.getInstance().getTime().toString() + ".xls";

            File f = new File(filename);

            FileOutputStream fos = null;

            fos = new FileOutputStream(f);

            byte[] buf = new byte[4096];

            int bytesRead;

            while((bytesRead = is.read(buf)) != -1) {

                fos.write(buf, 0, bytesRead);

            }

            fos.close();

            int vendor = Integer.parseInt(vendorId);

            if (vendor < 1 || vendor > 5) {

                setResult("Select a valid Vendor");

                return "result";

            }

            /*

             * Try to create the purchase order for given vendor

             * 

             */

            Long purchaseOrderId = null;

            CatalogClient csc = new CatalogClient();

            in.shop2020.model.v1.catalog.InventoryService.Client catalogClient= csc.getClient();

            String output = catalogClient.processPurchaseOrder(filename, vendor);

            /*

             * If PO is generated then create the PDF receipt for it

             * 

             */

            if(output.contains("POId:")) {

                String [] arr = output.split(":");

                purchaseOrderId = Long.parseLong(arr[1]);

                WarehouseClient warehouseServiceClient = new WarehouseClient();

                in.shop2020.warehouse.WarehouseService.Client client = warehouseServiceClient.getClient();

                in.shop2020.warehouse.PurchaseOrder purchaseOrder = client.getPurchaseOrder(purchaseOrderId);

                Supplier supplier = client.getSupplier(purchaseOrder.getSupplierId());

                String pdfFilename = in.shop2020.support.services.PdfPoSheetGenerator.generatePdfSheet(purchaseOrder, supplier);

                /*

                 * Put pdf file in a buffer to send it in response 

                 * 

                 */

                File file = new File(pdfFilename);

                byte[] buffer = new byte[(int)file.length()];

                try {

                    InputStream input = null;

                    try {

                        int totalBytesRead = 0;

                        input = new BufferedInputStream(new FileInputStream(file));

                        while(totalBytesRead < buffer.length){

                            int bytesRemaining = buffer.length - totalBytesRead;

                            //input.read() returns -1, 0, or more :

                            int bytesRead1 = input.read(buffer, totalBytesRead, bytesRemaining); 

                            if (bytesRead1 > 0){

                                totalBytesRead = totalBytesRead + bytesRead1;

                            }

                        }

                        /*

                         the above style is a bit tricky: it places bytes into the 'buffer' array; 

                         'buffer' is an output parameter;

                         the while loop usually has a single iteration only.

                         */

                    }

                    finally {

                        input.close();

                    }

                }

                catch (FileNotFoundException ex) {

                    log.info("FILE NOT FOUND : " + pdfFilename, ex);

                    setResult(ex.getMessage());

                }

                catch (IOException ex) {

                    log.info("FILE NOT FOUND : " + pdfFilename);

                    setResult(ex.getMessage());

                }

                response.setHeader("Content-disposition", "attachment; filename=" + pdfFilename );

                /*

                 * Send the pdf file in response  

                 * 

                 */

                ServletOutputStream sos;

                sos = response.getOutputStream();

                sos.write(buffer);

                sos.flush();

            }

        } catch (TTransportException e) {

            e.printStackTrace();

            setResult(e.getMessage());

        } catch (NumberFormatException e) {

            e.printStackTrace();

            setResult(e.getMessage());

        } catch (TException e) {

            e.printStackTrace();

            setResult(e.getMessage());

        } catch (WarehouseServiceException e) {

            e.printStackTrace();

            setResult(e.getMessage());

        } catch (InventoryServiceException e) {

            setResult(e.getMessage());

        } catch(IOException e) {

            log.error("Error occured");

            setResult(e.getMessage());

        }

        return "result";

    }

    public File getPurchaseOrderDetails() {

        return purchaseOrderDetails;

    }

    public void setPurchaseOrderDetails(File purchaseOrderDetails) {

        this.purchaseOrderDetails = purchaseOrderDetails;

    }

    public String getVendorId() {

        return vendorId;

    }

    public void setVendorId(String vendorId) {

        this.vendorId = vendorId;

    }

    public void setResult(String result) {

        this.result = result;

    }

    public String getResult() {

        return result;

    }

    public void setServletResponse(HttpServletResponse response) {

        this.response = response;

    }

}