TaxClassController.java

package com.salesmanager.web.admin.controller.tax;

import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.salesmanager.core.business.catalog.product.model.Product;
import com.salesmanager.core.business.catalog.product.service.ProductService;
import com.salesmanager.core.business.merchant.model.MerchantStore;
import com.salesmanager.core.business.tax.model.taxclass.TaxClass;
import com.salesmanager.core.business.tax.service.TaxClassService;
import com.salesmanager.core.utils.ajax.AjaxPageableResponse;
import com.salesmanager.core.utils.ajax.AjaxResponse;
import com.salesmanager.web.admin.entity.web.Menu;
import com.salesmanager.web.constants.Constants;
import com.salesmanager.web.utils.LabelUtils;

@Controller
public class TaxClassController {
    
    @Autowired
    private TaxClassService taxClassService = null;
    
    @Autowired
    private ProductService productService=null;
    
    @Autowired
    LabelUtils messages;
    
    private static final Logger LOGGER = LoggerFactory.getLogger(TaxClassController.class);

    
    @PreAuthorize("hasRole('TAX')")
    @RequestMapping(value={"/admin/tax/taxclass/list.html"}, method=RequestMethod.GET)
    public String displayTaxClasses(Model model, HttpServletRequest request, HttpServletResponse response) throws Exception {
        
        setMenu(model, request);
        MerchantStore store = (MerchantStore)request.getAttribute(Constants.ADMIN_STORE);
        TaxClass taxClass = new TaxClass();
        taxClass.setMerchantStore(store);
        
        model.addAttribute("taxClass", taxClass);
        
        return com.salesmanager.web.admin.controller.ControllerConstants.Tiles.Tax.taxClasses;
    }
    
    
    @PreAuthorize("hasRole('TAX')")
    @RequestMapping(value = "/admin/tax/taxclass/paging.html", method = RequestMethod.POST, produces = "application/json")
    public @ResponseBody
    String pageTaxClasses(HttpServletRequest request,
            HttpServletResponse response, Locale locale) {
        
        MerchantStore store = (MerchantStore)request.getAttribute(Constants.ADMIN_STORE);

        AjaxResponse resp = new AjaxResponse();
        try {

                List<TaxClass> taxClasses = taxClassService.listByStore(store);
                for(TaxClass tax : taxClasses) {
                    if(!tax.getCode().equals(TaxClass.DEFAULT_TAX_CLASS)) {
                        Map<String,String> entry = new HashMap<String,String>();
                        entry.put("taxClassId", String.valueOf(tax.getId()));
                        entry.put("code", tax.getCode());
                        entry.put("name", tax.getTitle());
                        resp.addDataEntry(entry);
                    }
                }

                resp.setStatus(AjaxPageableResponse.RESPONSE_STATUS_SUCCESS);
        
        } catch (Exception e) {
            LOGGER.error("Error while paging permissions", e);
            resp.setStatus(AjaxPageableResponse.RESPONSE_STATUS_FAIURE);
            resp.setErrorMessage(e);
        }
        
        String returnString = resp.toJSONString();
        return returnString;
    }
    
    @PreAuthorize("hasRole('TAX')")
    @RequestMapping(value="/admin/tax/taxclass/save.html", method=RequestMethod.POST)
    public String saveTaxClass(@Valid @ModelAttribute("taxClass") TaxClass taxClass, BindingResult result, Model model, HttpServletRequest request, Locale locale) throws Exception {
        
        
        setMenu(model, request);
        
        MerchantStore store = (MerchantStore)request.getAttribute(Constants.ADMIN_STORE);

        
        //requires code and name
        if(taxClass.getCode().equals(TaxClass.DEFAULT_TAX_CLASS)) {
            ObjectError error = new ObjectError("code",messages.getMessage("message.taxclass.alreadyexist", locale));
            result.addError(error);
        }
        

        
        //check if the code already exist
        TaxClass taxClassDb = taxClassService.getByCode(taxClass.getCode(),store);
        
        if(taxClassDb!=null) {
            ObjectError error = new ObjectError("code",messages.getMessage("message.taxclass.alreadyexist", locale));
            result.addError(error);
        }
        
        if (result.hasErrors()) {
            return com.salesmanager.web.admin.controller.ControllerConstants.Tiles.Tax.taxClasses;
        }
        
        taxClassService.create(taxClass);
        
        model.addAttribute("success","success");
        
        return com.salesmanager.web.admin.controller.ControllerConstants.Tiles.Tax.taxClasses;
        
    }
    
    
    @PreAuthorize("hasRole('TAX')")
    @RequestMapping(value="/admin/tax/taxclass/update.html", method=RequestMethod.POST)
    public String updateTaxClass(@Valid @ModelAttribute("taxClass") TaxClass taxClass, BindingResult result, Model model, HttpServletRequest request, Locale locale) throws Exception {
        
        
        setMenu(model, request);
        
        MerchantStore store = (MerchantStore)request.getAttribute(Constants.ADMIN_STORE);

        
        //requires code and name
        if(taxClass.getCode().equals(TaxClass.DEFAULT_TAX_CLASS)) {
            ObjectError error = new ObjectError("code",messages.getMessage("message.taxclass.alreadyexist", locale));
            result.addError(error);
        }
        

        
        //check if the code already exist
        TaxClass taxClassDb = taxClassService.getByCode(taxClass.getCode(),store);
        
        if(taxClassDb!=null && taxClassDb.getId().longValue()!=taxClass.getId().longValue()) {
            ObjectError error = new ObjectError("code",messages.getMessage("message.taxclass.alreadyexist", locale));
            result.addError(error);
        }
        
        if (result.hasErrors()) {
            return com.salesmanager.web.admin.controller.ControllerConstants.Tiles.Tax.taxClass;
        }
        
        taxClassService.update(taxClass);
        
        model.addAttribute("success","success");
        
        return com.salesmanager.web.admin.controller.ControllerConstants.Tiles.Tax.taxClass;
        
    }
    
    
    @PreAuthorize("hasRole('TAX')")
    @RequestMapping(value="/admin/tax/taxclass/remove.html", method=RequestMethod.POST, produces="application/json")
    public @ResponseBody String removeTaxClass(HttpServletRequest request, Locale locale) throws Exception {
        
        //do not remove super admin
        
        String taxClassId = request.getParameter("taxClassId");

        AjaxResponse resp = new AjaxResponse();
        

        try {
            

            /**
             * In order to remove a User the logged in ser must be STORE_ADMIN
             * or SUPER_USER
             */
            

            if(taxClassId==null){
                resp.setStatusMessage(messages.getMessage("message.unauthorized", locale));
                resp.setStatus(AjaxResponse.RESPONSE_STATUS_FAIURE);			
                return resp.toJSONString();
            }
            
            long lTaxClassId;
            try {
                lTaxClassId = Long.parseLong(taxClassId);
            } catch (Exception e) {
                LOGGER.error("Invalid taxClassId " + taxClassId);
                resp.setStatusMessage(messages.getMessage("message.unauthorized", locale));
                resp.setStatus(AjaxResponse.RESPONSE_STATUS_FAIURE);			
                return resp.toJSONString();
            }
            
            TaxClass taxClass = taxClassService.getById(lTaxClassId);
            
            if(taxClass==null) {
                LOGGER.error("Invalid taxClassId " + taxClassId);
                resp.setStatusMessage(messages.getMessage("message.unauthorized", locale));
                resp.setStatus(AjaxResponse.RESPONSE_STATUS_FAIURE);			
                return resp.toJSONString();
            }
            
            //look if the taxclass is used for products
            List<Product> products = productService.listByTaxClass(taxClass);

            if(products!=null && products.size()>0) {
                resp.setStatusMessage(messages.getMessage("message.product.association", locale));
                resp.setStatus(AjaxResponse.RESPONSE_STATUS_FAIURE);			
                return resp.toJSONString();
            }
            
            
            taxClassService.delete(taxClass);
            
            resp.setStatus(AjaxResponse.RESPONSE_OPERATION_COMPLETED);

        
        
        } catch (Exception e) {
            LOGGER.error("Error while deleting tax class", e);
            resp.setStatus(AjaxResponse.RESPONSE_STATUS_FAIURE);
            resp.setErrorMessage(e);
        }
        
        String returnString = resp.toJSONString();
        
        return returnString;
        
    }
    
    @PreAuthorize("hasRole('TAX')")
    @RequestMapping(value="/admin/tax/taxclass/edit.html", method=RequestMethod.GET)
    public String editTaxClass(@ModelAttribute("id") String id, Model model, HttpServletRequest request, HttpServletResponse response, Locale locale) throws Exception {
        
        setMenu(model,request);

        MerchantStore store = (MerchantStore)request.getAttribute(Constants.ADMIN_STORE);

        TaxClass taxClass = null;
        try {
            Long taxClassId = Long.parseLong(id);
            taxClass = taxClassService.getById(taxClassId);
        } catch (Exception e) {
            LOGGER.error("Cannot parse taxclassid " + id);
            return "redirect:/admin/tax/taxclass/list.html";
        }
        
        if(taxClass==null || taxClass.getMerchantStore().getId()!=store.getId()) {
            return "redirect:/admin/tax/taxclass/list.html";
        }
        
        
        
        
        model.addAttribute("taxClass", taxClass);
        
        return com.salesmanager.web.admin.controller.ControllerConstants.Tiles.Tax.taxClass;
        
        
        
    }


    
    private void setMenu(Model model, HttpServletRequest request)
    throws Exception {

        // display menu
        Map<String, String> activeMenus = new HashMap<String, String>();
        activeMenus.put("tax", "tax");
        activeMenus.put("taxclass", "taxclass");
        
        @SuppressWarnings("unchecked")
        Map<String, Menu> menus = (Map<String, Menu>) request
                .getAttribute("MENUMAP");
        
        Menu currentMenu = (Menu) menus.get("tax");
        model.addAttribute("currentMenu", currentMenu);
        model.addAttribute("activeMenus", activeMenus);
        //

    }

}