package org.kuali.student.enrollment.class2.registration.service;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.krad.uif.UifConstants;

 import org.kuali.rice.krad.uif.component.Component;

 import org.kuali.rice.krad.uif.container.CollectionGroup;

 import org.kuali.rice.krad.uif.container.Group;

 import org.kuali.rice.krad.uif.field.ActionField;

 import org.kuali.rice.krad.uif.field.MessageField;

 import org.kuali.rice.krad.uif.layout.StackedLayoutManager;

 import org.kuali.rice.krad.uif.service.impl.ViewHelperServiceImpl;

 import org.kuali.rice.krad.uif.util.ComponentFactory;

 import org.kuali.student.enrollment.class2.registration.dto.RegistrationGroupWrapper;

 import org.kuali.student.enrollment.class2.registration.form.RegistrationForm;

 import org.kuali.student.enrollment.courseregistration.dto.CourseRegistrationInfo;

 import org.kuali.student.enrollment.courseregistration.dto.RegRequestItemInfo;

 import org.kuali.student.r2.common.util.constants.LuiPersonRelationServiceConstants;

 import java.util.List;

 public class RegistrationViewHelperServiceImpl extends ViewHelperServiceImpl {

     public void checkRegElements(CollectionGroup collGroup, RegistrationForm form){

         List<CourseRegistrationInfo> regs = form.getCourseRegistrations();

         boolean courseRegistered = false;

         boolean courseInCart = false;

         for(Group group: ((StackedLayoutManager)collGroup.getLayoutManager()).getStackedGroups()){

             RegistrationGroupWrapper registrationGroupWrapper = (RegistrationGroupWrapper)group.getContext().get(UifConstants.ContextVariableNames.LINE);

             boolean renderRegButtons = true;

             boolean renderDropButton = false;

             boolean renderRemoveFromCartButton = false;

             String id = registrationGroupWrapper.getRegistrationGroup().getId();

             if(StringUtils.isNotBlank(id)){

                 for (CourseRegistrationInfo reg : regs) {

                     if (reg.getRegGroupRegistration().getRegistrationGroup().getId().equals(id)

                             && reg.getRegGroupRegistration().getStateKey().equals(LuiPersonRelationServiceConstants.REGISTERED_STATE_KEY)) {

                         renderDropButton = true;

                         courseRegistered = true;

                         renderRegButtons = false;

                         break;

                     }

                 }

                 if (form.getRegRequest() != null && form.getRegRequest().getRegRequestItems() != null) {

                     for (RegRequestItemInfo regRequestItemInfo : form.getRegRequest().getRegRequestItems()) {

                         String regGroupId = regRequestItemInfo.getNewRegGroupId();

                         if (StringUtils.isNotBlank(regGroupId)) {

                             // find the regGroupWrapper that matches the id from the supplemental list

                             //RegistrationGroupWrapper regGroupWrapper = form.getRegistrationGroupWrappersById().get(regGroupId);

                             if (regGroupId.equals(id)) {

                                 renderRemoveFromCartButton = true;

                                 courseInCart = true;

                                 renderRegButtons = false;

                                 break;

                             }

                         }

                     }

                 }

             }

             for (Component c : group.getFooter().getItems()) {

                 if(c instanceof ActionField){

                     if(((ActionField)c).getMethodToCall().equals("addToCart") || (((ActionField)c).getMethodToCall().equals("registerClass"))){

                         c.setRender(renderRegButtons);

                     }

                     else if(((ActionField)c).getMethodToCall().equals("removeFromCart")){

                         c.setRender(renderRemoveFromCartButton);

                     }

                     else if(((ActionField)c).getMethodToCall().equals("addDropToCart")){

                         c.setRender(renderDropButton);

                     }

                 }

             }

             if(!renderRegButtons && renderDropButton){

                 MessageField message = ComponentFactory.getMessageField();

                 message.setMessageText("You are currently registered for this course.");

                 ((List<Component>)group.getFooter().getItems()).add(0, message);

             }

             else if(!renderRegButtons && renderRemoveFromCartButton){

                 MessageField message = ComponentFactory.getMessageField();

                 message.setMessageText("This course is currently in your registration cart");

                 ((List<Component>)group.getFooter().getItems()).add(0, message);

             }

         }

         // TODO: RICE=M9 UPGRADE Replace call to "getSummaryMessageField" to use one of the new ContainerBase message field widgets, I suspect this should use getErrorsField

         if(courseRegistered){

            //collGroup.getSummaryMessageField().setMessageText("You are currently registered for a version of this course.");

            //collGroup.getSummaryMessageField().addStyleClass("ks-regWarning");

         }

         else if(courseInCart){

            //collGroup.getSummaryMessageField().setMessageText("Your cart contains a version of this course.");

            //collGroup.getSummaryMessageField().addStyleClass("ks-regWarning");

         }

         else{

            //collGroup.getSummaryMessageField().setMessageText("Add a course to your cart or register with a single click:");

            //collGroup.getSummaryMessageField().getStyleClasses().remove("ks-regWarning");

         }

     }

     public void checkSubmitItemRender(Component component, RegistrationForm form){

         boolean render = false;

         if(form.getRegRequest() != null && form.getRegRequest().getRegRequestItems() != null

                 && !form.getRegRequest().getRegRequestItems().isEmpty()){

             render = true;

         }

         component.setRender(render);

     }

     public void checkRenderCartEmpty(Component component, RegistrationForm form){

         boolean render = true;

         if(form.getRegRequest() != null && form.getRegRequest().getRegRequestItems() != null

                 && !form.getRegRequest().getRegRequestItems().isEmpty()){

             render = false;

         }

         component.setRender(render);

     }

 }