package org.kuali.student.lum.program.client.major.view;

 import java.util.List;

 import org.kuali.student.common.ui.client.configurable.mvc.Configurer;

 import org.kuali.student.common.ui.client.configurable.mvc.FieldDescriptorReadOnly;

 import org.kuali.student.common.ui.client.configurable.mvc.binding.ModelWidgetBinding;

 import org.kuali.student.common.ui.client.configurable.mvc.views.VerticalSectionView;

 import org.kuali.student.common.ui.client.mvc.Controller;

 import org.kuali.student.common.ui.client.mvc.DataModel;

 import org.kuali.student.common.ui.client.widgets.field.layout.element.MessageKeyInfo;

 import org.kuali.student.common.ui.client.widgets.table.summary.SummaryTableFieldBlock;

 import org.kuali.student.common.ui.client.widgets.table.summary.SummaryTableFieldRow;

 import org.kuali.student.common.ui.client.widgets.table.summary.SummaryTableSection;

 import org.kuali.student.core.statement.dto.StatementTypeInfo;

 import org.kuali.student.core.statement.ui.client.widgets.rules.RulePreviewWidget;

 import org.kuali.student.lum.common.client.configuration.AbstractControllerConfiguration;

 import org.kuali.student.lum.program.client.ProgramConstants;

 import org.kuali.student.lum.program.client.ProgramMsgConstants;

 import org.kuali.student.lum.program.client.ProgramSections;

 import org.kuali.student.lum.program.client.major.MajorEditableHeader;

 import org.kuali.student.lum.program.client.major.MajorManager;

 import org.kuali.student.lum.program.client.major.edit.MajorEditController;

 import org.kuali.student.lum.program.client.major.proposal.MajorProposalController;

 import org.kuali.student.lum.program.client.requirements.ProgramRequirementsDataModel;

 import org.kuali.student.lum.program.client.requirements.ProgramRequirementsSummaryView;

 import org.kuali.student.lum.program.client.requirements.ProgramRequirementsViewController;

 import org.kuali.student.lum.program.dto.ProgramRequirementInfo;

 import com.google.gwt.user.client.ui.FlowPanel;

 public class ProgramRequirementsViewConfiguration extends AbstractControllerConfiguration {

     private ProgramRequirementsViewController progReqcontroller;

     private ProgramRequirementsDataModel rules;

     private ProgramRequirementsDataModel rulesComp;

     public ProgramRequirementsViewConfiguration(Configurer configurer, boolean special) {

         this.setConfigurer(configurer);

         progReqcontroller = new ProgramRequirementsViewController(controller, MajorManager.getEventBus(), this.getTitle(), 

                                     ProgramSections.PROGRAM_REQUIREMENTS_VIEW, true,

                                     (special ? new MajorEditableHeader(this.getTitle(), ProgramSections.PROGRAM_REQUIREMENTS_EDIT) : null));

     }

     public ProgramRequirementsViewConfiguration(Configurer configurer, boolean special, boolean reloadRequirements) {

         this.setConfigurer(configurer);

         progReqcontroller = new ProgramRequirementsViewController(controller, MajorManager.getEventBus(), this.getTitle(), 

                                     ProgramSections.PROGRAM_REQUIREMENTS_VIEW, true,

                                     (special ? new MajorEditableHeader(this.getTitle(), ProgramSections.PROGRAM_REQUIREMENTS_EDIT) : null), reloadRequirements);

     }

     public ProgramRequirementsViewConfiguration(Configurer configurer, Controller controller, boolean special) {

         this.setConfigurer(configurer);

         if (special){

                 rootSection = new VerticalSectionView(ProgramSections.PROGRAM_REQUIREMENTS_VIEW, this.getTitle(), ProgramConstants.PROGRAM_MODEL_ID, 

                         new MajorEditableHeader(this.getTitle(), ProgramSections.PROGRAM_REQUIREMENTS_EDIT));

         } else {

                 rootSection = new VerticalSectionView(ProgramSections.PROGRAM_REQUIREMENTS_VIEW, this.getTitle(), ProgramConstants.PROGRAM_MODEL_ID);                

         }

         this.controller = controller;

     }

     private String getTitle(){

         return getLabel(ProgramMsgConstants.PROGRAM_MENU_SECTIONS_REQUIREMENTS);

     }

     @Override

     protected void buildLayout() {

             if (controller instanceof MajorProposalController || controller instanceof MajorEditController)

                     rootSection.addSection(createProgramRequirementsSectionEdit());

             else          

             rootSection = progReqcontroller.getProgramRequirementsView();         

     }

     @Override

     public void setController(Controller controller) {

         this.controller = controller;

         if (progReqcontroller != null) {

             progReqcontroller.setParentController(controller);

         }

     }

     // Side-by-side comparison (when controller is not null)  

     private SummaryTableSection createProgramRequirementsSectionEdit() { 

               SummaryTableSection section = new SummaryTableSection((Controller) controller);                     

               section.setEditable(false);

               section.addSummaryTableFieldBlock(createProgramRequirementsSectionEditBlock());

         return section;

     }

     public SummaryTableFieldBlock createProgramRequirementsSectionEditBlock() {

                   SummaryTableFieldBlock block = new SummaryTableFieldBlock();

                   if (controller instanceof MajorProposalController)

                   {        

                           rules = ((MajorProposalController) controller).getReqDataModel();

                           rulesComp = ((MajorProposalController) controller).getReqDataModelComp();

                   } else if (controller instanceof MajorEditController)

                   {        

                           rules = ((MajorEditController) controller).getReqDataModel();

                           rulesComp = ((MajorEditController) controller).getReqDataModelComp();

                   }

                   // one row per requirement type

         for (StatementTypeInfo stmtType : rules.getStmtTypes()) {

             SummaryTableFieldRow arow;

             arow = new SummaryTableFieldRow(addRequisiteField(new FlowPanel(), stmtType), 

                                             addRequisiteFieldComp(new FlowPanel(), stmtType));

             block.addSummaryTableFieldRow(arow);

         }

                   return block;

           } 

     private FieldDescriptorReadOnly addRequisiteField(final FlowPanel panel,

             final StatementTypeInfo stmtType) {

         final ModelWidgetBinding<FlowPanel> widgetBinding = new ModelWidgetBinding<FlowPanel>() {

             @Override

             public void setModelValue(FlowPanel panel, DataModel model, String path) {}

             @Override

             public void setWidgetValue(final FlowPanel panel, DataModel model, //Don't place a breakpoint here:  It will stall debugging for some unknown reason!

                     String path) {

                 panel.clear();

                 List<ProgramRequirementInfo> programRequirementInfos = rules.getProgReqInfo(stmtType.getId());

                 for (ProgramRequirementInfo rule : programRequirementInfos) {

                     Integer internalProgReqID = rules.getInternalProgReqID(rule);

                     String stmtTypeId = rule.getStatement().getType();

                     int minCredits = (rule.getMinCredits() == null ? 0 : rule.getMinCredits());

                     int maxCredits = (rule.getMaxCredits() == null ? 0 : rule.getMaxCredits());

                     String plainDesc = (rule.getDescr() == null ? "" : rule.getDescr().getPlain());

                     final RulePreviewWidget ruleWidget = new RulePreviewWidget(internalProgReqID, rule.getShortTitle(),

                                     getTotalCreditsString(minCredits, maxCredits), plainDesc, rule.getStatement(),

                                     true, ProgramRequirementsSummaryView.getCluSetWidgetList(rule.getStatement()));

                     panel.add(ruleWidget);

                 }

             }

         };

         FieldDescriptorReadOnly requisiteField = new FieldDescriptorReadOnly(

                         ProgramConstants.ID, new MessageKeyInfo(stmtType.getName()), null, panel);

         requisiteField.setWidgetBinding(widgetBinding);

         return requisiteField;

     }

     private FieldDescriptorReadOnly addRequisiteFieldComp(

             final FlowPanel panel, final StatementTypeInfo stmtType) {

         final ModelWidgetBinding<FlowPanel> widgetBinding = new ModelWidgetBinding<FlowPanel>() {

             @Override

             public void setModelValue(FlowPanel panel, DataModel model,

                     String path) {

                 }

             @Override

             public void setWidgetValue(final FlowPanel panel, DataModel model, //Don't place a breakpoint here:  It will stall debugging for some unknown reason!

                     String path) {

                 panel.clear();

                 List<ProgramRequirementInfo> programRequirementInfos = rulesComp.getProgReqInfo(stmtType.getId());

                 for (ProgramRequirementInfo rule : programRequirementInfos) {

                     Integer internalProgReqID = rulesComp.getInternalProgReqID(rule);

                     String stmtTypeId = rule.getStatement().getType();

                     int minCredits = (rule.getMinCredits() == null ? 0 : rule.getMinCredits());

                     int maxCredits = (rule.getMaxCredits() == null ? 0 : rule.getMaxCredits());

                     String plainDesc = (rule.getDescr() == null ? "" : rule.getDescr().getPlain());

                     final RulePreviewWidget ruleWidget = new RulePreviewWidget(internalProgReqID, rule.getShortTitle(),

                                     getTotalCreditsString(minCredits, maxCredits), plainDesc, rule.getStatement(),

                                     true, ProgramRequirementsSummaryView.getCluSetWidgetList(rule.getStatement()));

                     panel.add(ruleWidget);

                 }

             }

         };

         FieldDescriptorReadOnly requisiteField = new FieldDescriptorReadOnly(

                         ProgramConstants.ID, new MessageKeyInfo(stmtType.getName()), null, panel);

         requisiteField.setWidgetBinding(widgetBinding);

         return requisiteField;

     }

     private String getTotalCreditsString(int min, int max) {

         return "Expected Total Credits:" + min + "-" + max;

     }

 }