package org.kuali.student.lum.lu.ui.main.client.configuration;

 import java.util.List;

 import org.kuali.student.common.assembly.data.Metadata;

 import org.kuali.student.common.rice.StudentIdentityConstants;

 import org.kuali.student.common.rice.authorization.PermissionType;

 import org.kuali.student.common.ui.client.application.Application;

 import org.kuali.student.common.ui.client.application.ViewContext;

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

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

 import org.kuali.student.common.ui.client.widgets.KSButton;

 import org.kuali.student.common.ui.client.widgets.KSCheckBox;

 import org.kuali.student.common.ui.client.widgets.KSLabel;

 import org.kuali.student.common.ui.client.widgets.KSLightBox;

 import org.kuali.student.common.ui.client.widgets.KSRadioButton;

 import org.kuali.student.common.ui.client.widgets.KSButtonAbstract.ButtonStyle;

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

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

 import org.kuali.student.common.ui.client.widgets.layout.ContentBlockLayout;

 import org.kuali.student.common.ui.client.widgets.layout.LinkContentBlock;

 import org.kuali.student.common.ui.client.widgets.search.KSPicker;

 import org.kuali.student.common.ui.client.widgets.search.SearchPanel;

 import org.kuali.student.common.ui.client.widgets.search.SelectedResults;

 import org.kuali.student.common.ui.shared.IdAttributes.IdType;

 import org.kuali.student.lum.common.client.lu.LUUIPermissions;

 import org.kuali.student.lum.common.client.widgets.AppLocations;

 import org.kuali.student.lum.lu.ui.course.client.widgets.RecentlyViewedBlock;

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

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

 import com.google.gwt.event.dom.client.ClickEvent;

 import com.google.gwt.event.dom.client.ClickHandler;

 import com.google.gwt.event.logical.shared.ValueChangeEvent;

 import com.google.gwt.event.logical.shared.ValueChangeHandler;

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

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

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

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

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

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

 public class CurriculumHomeConfigurer implements CurriculumHomeConstants {

         protected Metadata searchMetadata;

         protected final KSCheckBox useCurricReviewCheckbox = new KSCheckBox(getMessage("useCurriculumReview"));

     public Widget configure(Metadata searchMeta) {

         this.searchMetadata = searchMeta;

         ContentBlockLayout layout = new ContentBlockLayout(getMessage(CURRICULUM_MANAGEMENT));

         layout.addContentTitleWidget(getHowToWidget());

         layout.addContentTitleWidget(getActionListLink());

         //TODO: Fix to improve performance, so permissions don't have to be loaded every time

         Application.getApplicationContext().getSecurityContext().loadPermissionsByPermissionType(PermissionType.INITIATE);

         //Create Block

         final LinkContentBlock create = new LinkContentBlock(

                 getMessage(CREATE),

                 getMessage(CREATE_DESC));

         //Add "Create Course" link if user has create course permission

                 Application.getApplicationContext().getSecurityContext().checkPermission(LUUIPermissions.CREATE_COURSE_BY_PROPOSAL,        

                         new Callback<Boolean>() {

                                 public void exec(Boolean result) {

                                         if (result){

                                                 create.addNavLinkWidget(getMessage(CREATE_COURSE), getCreateCourseClickHandler());

                                         }

                                 }                        

                 });

                 //Add "Create Program" link if user has any create program permission

                 String[] permissionsToCheck = {LUUIPermissions.CREATE_PROGRAM_BY_PROPOSAL, LUUIPermissions.CREATE_PROGRAM_BY_ADMIN};

                 Application.getApplicationContext().getSecurityContext().checkPermission(permissionsToCheck,        

                         new Callback<Boolean>() {

                         public void exec(Boolean result) {

                                 if (result)        {

                                         create.addNavLinkWidget(getMessage(CREATE_PROGRAM), AppLocations.Locations.EDIT_PROGRAM.getLocation());

                                 }                                

                         }

         });

         //View + Modify

         LinkContentBlock viewModify = new LinkContentBlock(

                 getMessage(VIEW_MODIFY),

                 getMessage(VIEW_MODIFY_DESC));

         SectionTitle courses = SectionTitle.generateH4Title(getMessage("courses"));

         courses.addStyleName("bold");

         viewModify.add(courses);

         viewModify.addNavLinkWidget(getMessage(BROWSE_CATALOG), AppLocations.Locations.BROWSE_CATALOG.getLocation());

         viewModify.add(getFindCoursesWidget());

         viewModify.add(getFindCourseProposalsWidget());

         SectionTitle programs = SectionTitle.generateH4Title(getMessage("programs"));

         programs.addStyleName("bold");

         viewModify.add(programs);

         viewModify.addNavLinkWidget(getMessage(BROWSE_PROGRAM), AppLocations.Locations.BROWSE_PROGRAM.getLocation());

         viewModify.add(getFindMajorsWidget());

         viewModify.add(getFindProgramProposalsWidget());

         viewModify.add(getViewCoreProgramWidget());

         viewModify.add(getViewCredentialProgramWidget());

         //RecentlyViewed

         RecentlyViewedBlock recent = new RecentlyViewedBlock(

                 getMessage(RECENTLY_VIEWED),

                 getMessage(RV_DESC));

         recent.addStyleName("recentlyViewed-block");

         //Tools

         LinkContentBlock tools = new LinkContentBlock(

                 getMessage(TOOLS),

                 getMessage(TOOLS_DESC));

         tools.addNavLinkWidget(getMessage(COURSE_SETS), AppLocations.Locations.MANAGE_CLU_SETS.getLocation());

         tools.addNavLinkWidget(getMessage(LO_CATEGORIES), AppLocations.Locations.MANAGE_LO_CATEGORIES.getLocation());

         tools.addNavLinkWidget(getMessage(DEP_ANALYSIS), AppLocations.Locations.DEPENDENCY_ANALYSIS.getLocation());

         //Add all blocks

         layout.addContentBlock(create);

         layout.addContentBlock(viewModify);

         recent.addBlock(tools);

         layout.addContentBlock(recent);

         return layout;

     }

         private Widget getViewCredentialProgramWidget() {

         final Widget searchWidget;

         if (searchMetadata != null) {

             Metadata metadata = searchMetadata.getProperties().get("findCredentialProgram");

             searchWidget = new KSPicker(metadata.getInitialLookup(), metadata.getAdditionalLookups());

             SearchPanel panel = ((KSPicker) searchWidget).getSearchPanel();

             if (panel != null) {

                 panel.setMutipleSelect(false);

             }

             ((KSPicker) searchWidget).setAdvancedSearchCallback(new Callback<List<SelectedResults>>() {

                 @Override

                 public void exec(List<SelectedResults> result) {

                     SelectedResults value = result.get(0);

                     ViewContext viewContext = new ViewContext();

                     viewContext.setId(value.getResultRow().getId());

                     String cluType = value.getResultRow().getValue("lu.resultColumn.luOptionalType");

                     if (cluType != null) {

                         viewContext.setAttribute(ProgramConstants.TYPE, cluType);

                     }

                     viewContext.setIdType(IdType.OBJECT_ID);

                     ProgramRegistry.setCreateNew(true);

                     Application.navigate(AppLocations.Locations.VIEW_BACC_PROGRAM.getLocation(), viewContext);

                     ((KSPicker) searchWidget).getSearchWindow().hide();

                 }

             });

         } else {

             searchWidget = new Label(getMessage(FIND_CREDENTIALS));

             searchWidget.setStyleName("contentBlock-navLink-disabled");

         }

         searchWidget.setStyleName("contentBlock-navLink");

         return searchWidget;

         }

     private Widget getViewCoreProgramWidget() {

         final Widget searchWidget;

         if (searchMetadata != null) {

             Metadata metadata = searchMetadata.getProperties().get("findCoreProgram");

             searchWidget = new KSPicker(metadata.getInitialLookup(), metadata.getAdditionalLookups());

             SearchPanel panel = ((KSPicker) searchWidget).getSearchPanel();

             if (panel != null) {

                 panel.setMutipleSelect(false);

             }

             ((KSPicker) searchWidget).setAdvancedSearchCallback(new Callback<List<SelectedResults>>() {

                 @Override

                 public void exec(List<SelectedResults> result) {

                     SelectedResults value = result.get(0);

                     ViewContext viewContext = new ViewContext();

                     viewContext.setId(value.getResultRow().getId());

                     String cluType = value.getResultRow().getValue("lu.resultColumn.luOptionalType");

                     if (cluType != null) {

                         viewContext.setAttribute(ProgramConstants.TYPE, cluType);

                     }

                     viewContext.setIdType(IdType.OBJECT_ID);

                     ProgramRegistry.setCreateNew(true);

                     Application.navigate(AppLocations.Locations.VIEW_CORE_PROGRAM.getLocation(), viewContext);

                     ((KSPicker) searchWidget).getSearchWindow().hide();

                 }

             });

         } else {

             searchWidget = new Label(getMessage(FIND_CORES));

             searchWidget.setStyleName("contentBlock-navLink-disabled");

         }

         searchWidget.setStyleName("contentBlock-navLink");

         return searchWidget;

     }

     /**

      * 

      * This method will call getFindProposalsWidget() and return

      * proposals for courses.

      * 

      * @return

      */

     protected Widget getFindCourseProposalsWidget(){

         return getFindProposalsWidget(true);

     }

     /**

      * 

      * This method will call getFindProposalsWidget() and return

      * proposals for programs.

      * 

      * @return

      */

     protected Widget getFindProgramProposalsWidget(){

         return getFindProposalsWidget(false);

     }

     /**

      * 

      * This method will generate the find proposals widget.

      * <p>

      * It is used by course and program.  Rather than call it directly,

      * call either getFindCourseProposalsWidget() or getFindProgramProposalsWidget()

      * to make the code a bit clearer.

      * 

      * @param isCourseSearch true for course, false for program

      * @return the widget

      */

     protected Widget getFindProposalsWidget(boolean isCourseSearch) {

         final Widget searchWidget;

         // Load a search to get back either programs or courses

         String searchMetadataPropName = "";

         if (isCourseSearch){

             searchMetadataPropName = "findCourseProposal";

         }

         else {

             searchMetadataPropName = "findProgramProposal"; 

         }

         if (searchMetadata != null) {

             // Find search in the search meta data

             // 

             Metadata metadata = searchMetadata.getProperties().get(searchMetadataPropName);

             searchWidget = new KSPicker(metadata.getInitialLookup(), metadata.getAdditionalLookups());

             SearchPanel panel = ((KSPicker) searchWidget).getSearchPanel();

             if (panel != null) {

                 panel.setMutipleSelect(false);

             }

             ((KSPicker) searchWidget).setAdvancedSearchCallback(new Callback<List<SelectedResults>>() {

                 @Override

                 public void exec(List<SelectedResults> result) {

                         if (result != null && result.size() > 0) {

                             SelectedResults value = result.get(0);

                             ViewContext viewContext = new ViewContext();

                             viewContext.setId(value.getResultRow().getId());

                             String proposalType = value.getResultRow().getValue("proposal.resultColumn.proposalOptionalType");

                             viewContext.setAttribute(StudentIdentityConstants.DOCUMENT_TYPE_NAME, proposalType);

                             viewContext.setIdType(IdType.KS_KEW_OBJECT_ID);

                             if("kuali.proposal.type.course.create.admin".equals(proposalType)||"kuali.proposal.type.course.modify.admin".equals(proposalType)){

                                     Application.navigate(AppLocations.Locations.COURSE_ADMIN.getLocation(), viewContext);

                             }else if (proposalType.startsWith("kuali.proposal.type.course")){

                                     Application.navigate(AppLocations.Locations.COURSE_PROPOSAL.getLocation(), viewContext);

                             } else {

                                     ProgramRegistry.setCreateNew(true);

                                     Application.navigate(AppLocations.Locations.PROGRAM_PROPOSAL.getLocation(), viewContext);

                             }

                             ((KSPicker) searchWidget).getSearchWindow().hide();

                         }

                 }

             });

         } else {

             searchWidget = new Label(getMessage(FIND_PROPOSALS));

             searchWidget.setStyleName("contentBlock-navLink-disabled");

         }

         searchWidget.setStyleName("contentBlock-navLink");

         return searchWidget;

     }

     protected Widget getFindCoursesWidget() {

         Widget searchWidget;

         if (searchMetadata != null) {

             Metadata metadata = searchMetadata.getProperties().get("findCourse");

             searchWidget = new KSPicker(metadata.getInitialLookup(), metadata.getAdditionalLookups());

             SearchPanel panel = ((KSPicker) searchWidget).getSearchPanel();

             if (panel != null) {

                 panel.setMutipleSelect(false);

             }

             ((KSPicker) searchWidget).addValuesChangeHandler(new ValueChangeHandler<List<String>>() {

                 public void onValueChange(ValueChangeEvent<List<String>> event) {

                     List<String> selection = event.getValue();

                     ViewContext viewContext = new ViewContext();

                     viewContext.setId(selection.get(0));

                     viewContext.setIdType(IdType.OBJECT_ID);

                     Application.navigate(AppLocations.Locations.VIEW_COURSE.getLocation(), viewContext);

                 }

             });

             searchWidget.setStyleName("contentBlock-navLink");

         } else {

             searchWidget = new Label(getMessage(FIND_COURSES));

             searchWidget.setStyleName("contentBlock-navLink-disabled");

         }

         return searchWidget;

     }

     protected ClickHandler getCreateCourseClickHandler() {

         return new ClickHandler(){

                         @Override

                         public void onClick(ClickEvent event) {

                                 //Create a dialog for course selection

                     final KSLightBox dialog = new KSLightBox(getMessage("createCourse"),KSLightBox.Size.MEDIUM);

                     final VerticalPanel layout = new VerticalPanel();

                     layout.addStyleName("ks-form-module-fields");

                     final KSButton startProposalButton = new KSButton(getMessage("startProposal"));

                     dialog.addButton(startProposalButton);

                     KSButton cancelLink = new KSButton("Cancel", ButtonStyle.ANCHOR_LARGE_CENTERED, new ClickHandler(){

                     public void onClick(ClickEvent event) {

                         dialog.hide();

                     }

                 });

                     dialog.addButton(cancelLink);

                     HorizontalPanel titlePanel = new HorizontalPanel();

                     KSLabel titleLabel = new KSLabel(getMessage("createCourseSubTitle"));

                     titleLabel.addStyleName("bold");

                     AbbrButton helpButton = new AbbrButton(AbbrButtonType.HELP);

                     helpButton.setHoverHTML(getMessage("createCourseSubTitle-help"));

                     helpButton.getHoverPopup().getElement().getStyle().setZIndex(999999);

                     titlePanel.add(titleLabel);

                     titlePanel.add(helpButton);

                     layout.add(titlePanel);

                     KSLabel instructionText = new KSLabel(getMessage("createCourseSubTitle-instruct"));

                     layout.add(instructionText);

                     final CopyCourseSearchPanel copyCourseSearchPanel = new CopyCourseSearchPanel(searchMetadata, new Callback<Boolean>(){

                                         public void exec(Boolean result) {

                                                 if(result){

                                                         startProposalButton.setEnabled(true);

                                                 }else{

                                                         startProposalButton.setEnabled(false);

                                                 }

                                         }

                     }, getMessage("courseToCopy"), getMessage("courseInvalidValue"), new String[]{getMessage("selectByCourseCode"), getMessage("selectByCourseTitle")}, new String[]{"approvedCourses", "approvedCoursesByTitle"});

                     final CopyCourseSearchPanel copyProposalSearchPanel = new CopyCourseSearchPanel(searchMetadata, new Callback<Boolean>(){

                                         public void exec(Boolean result) {

                                                 if(result){

                                                         startProposalButton.setEnabled(true);

                                                 }else{

                                                         startProposalButton.setEnabled(false);

                                                 }

                                         }

                     }, getMessage("proposalToCopy"), getMessage("proposalInvalidValue"), new String[]{getMessage("selectByProposalTitle"), getMessage("selectByProposedCourse")}, new String[]{"proposedCoursesByTitle", "proposedCoursesByCode"});

                     final KSRadioButton radioOptionBlank = new KSRadioButton("createNewCreditCourseButtonGroup", getMessage("startBlankProposal"));

                     final KSRadioButton radioOptionCopyCourse = new KSRadioButton("createNewCreditCourseButtonGroup", getMessage("copyApprovedCourse"));

                     final KSRadioButton radioOptionCopyProposal = new KSRadioButton("createNewCreditCourseButtonGroup", getMessage("copyProposedCourse"));

                     radioOptionBlank.addValueChangeHandler(new ValueChangeHandler<Boolean>(){

                                         public void onValueChange(ValueChangeEvent<Boolean> event) {

                                                         copyCourseSearchPanel.setVisible(false);

                                                         copyProposalSearchPanel.setVisible(false);

                                                         startProposalButton.setEnabled(true);

                                                         useCurricReviewCheckbox.setEnabled(true);

                                         }

                     });

                     radioOptionBlank.setValue(true);

                     radioOptionCopyCourse.addValueChangeHandler(new ValueChangeHandler<Boolean>(){

                                         public void onValueChange(ValueChangeEvent<Boolean> event) {

                                                 if(event.getValue()){

                                                         copyCourseSearchPanel.setVisible(true);

                                                         copyProposalSearchPanel.setVisible(false);

                                                         useCurricReviewCheckbox.setEnabled(false);

                                                         copyCourseSearchPanel.clear();

                                                         copyProposalSearchPanel.clear();

                                                         startProposalButton.setEnabled(false);

                                                 }

                                         }

                     });

                     radioOptionCopyProposal.addValueChangeHandler(new ValueChangeHandler<Boolean>(){

                                         public void onValueChange(ValueChangeEvent<Boolean> event) {

                                                 if(event.getValue()){

                                                         copyCourseSearchPanel.setVisible(false);

                                                         copyProposalSearchPanel.setVisible(true);

                                                         useCurricReviewCheckbox.setEnabled(false);

                                                         copyCourseSearchPanel.clear();

                                                         copyProposalSearchPanel.clear();

                                                         startProposalButton.setEnabled(false);

                                                 }

                                         }

                     });

                             Application.getApplicationContext().getSecurityContext().checkScreenPermission("useCurriculumReview", new Callback<Boolean>() {

                                                     @Override

                                                     public void exec(Boolean result) {

                                                             final boolean isAuthorized = result;

                                                             //Only authorized users (eg. admin) are shown the "Use Curriculum Review" check box

                                                             if (isAuthorized){

                                                                     //An authorized user by default is allowed to bypass the curriculum review process.

                                                                     //They may choose to use it if desired and hence given the option to change it.

                                                         useCurricReviewCheckbox.setValue(false);

                                                         useCurricReviewCheckbox.setVisible(true);

                                                 } else {

                                                         //Unauthorized users must use curriculum review process and does not get option to change  

                                                         useCurricReviewCheckbox.setValue(true);

                                                         useCurricReviewCheckbox.setVisible(false);                            

                                                 }

                                                             //Setup dialog layout

                                                 layout.add(radioOptionBlank);

                                                 layout.add(radioOptionCopyCourse);

                                                 layout.add(copyCourseSearchPanel);

                                                 layout.add(radioOptionCopyProposal);

                                                 layout.add(copyProposalSearchPanel);

                                                 layout.add(new KSLabel(""));

                                                 layout.add(useCurricReviewCheckbox);

                                                 //Setup start proposal click handler

                                                 startProposalButton.addClickHandler(new ClickHandler(){

                                                                     public void onClick(ClickEvent event) {

                                                                             //Clicking this button will navigate user to appropriate screens based on selections

                                                         ViewContext viewContext = new ViewContext();

                                                         //Start New Proposal

                                                                             if(radioOptionBlank.getValue())        {

                                                                                     //Do nothing, empty view context indicates new proposal

                                                                             //Copy Course

                                                                             } else if (radioOptionCopyCourse.getValue()) {                                                                                                                                        

                                                                                     //Setup view context to open copy from existing course

                                                                                     viewContext.setId(copyCourseSearchPanel.getValue());

                                                                 viewContext.setIdType(IdType.COPY_OF_OBJECT_ID);

                                                                             //Copy Proposal

                                                                             } else if(radioOptionCopyProposal.getValue()){                                                                                    

                                                                                     //Setup view context to copy from existing proposal

                                                                                     viewContext.setId(copyProposalSearchPanel.getValue());

                                                                 viewContext.setIdType(IdType.COPY_OF_KS_KEW_OBJECT_ID);                                                                                                                               

                                                                             }

                                                                             //Based on curriculum review, navigate user to either admin or standard proposal screens

                                                                             if (useCurricReviewCheckbox.getValue()){                                                                                            

                                                                                     Application.navigate(AppLocations.Locations.COURSE_PROPOSAL.getLocation(),viewContext);                                                                                                    

                                                                             } else {

                                                                                     Application.navigate(AppLocations.Locations.COURSE_ADMIN.getLocation(),viewContext);

                                                                             }                                                                                    

                                                                             dialog.hide();

                                                                     }

                                                             });

                                                 dialog.setWidget(layout);

                                                 dialog.show();                                                                                    

                                                     }

                                             });                    

                     }

                    };

     }

     protected Widget getFindMajorsWidget() {

         final Widget searchWidget;

         if (searchMetadata != null) {

             Metadata metadata = searchMetadata.getProperties().get("findMajor");

             searchWidget = new KSPicker(metadata.getInitialLookup(), metadata.getAdditionalLookups());

             SearchPanel panel = ((KSPicker) searchWidget).getSearchPanel();

             if (panel != null) {

                 panel.setMutipleSelect(false);

             }

             ((KSPicker) searchWidget).setAdvancedSearchCallback(new Callback<List<SelectedResults>>() {

                 @Override

                 public void exec(List<SelectedResults> result) {

                     SelectedResults value = result.get(0);

                     ViewContext viewContext = new ViewContext();

                     viewContext.setId(value.getResultRow().getId());

                     String cluType = value.getResultRow().getValue("lu.resultColumn.luOptionalType");

                     if (cluType != null) {

                         viewContext.setAttribute(ProgramConstants.TYPE, cluType);

                     }

                     String variationId = value.getResultRow().getValue("lu.resultColumn.variationId");

                     if (variationId != null && !variationId.trim().isEmpty()) {

                         viewContext.setAttribute(ProgramConstants.VARIATION_ID, variationId);

                     }

                     viewContext.setIdType(IdType.OBJECT_ID);

                     ProgramRegistry.setCreateNew(true);

                     Application.navigate(AppLocations.Locations.VIEW_PROGRAM.getLocation(), viewContext);

                     ((KSPicker) searchWidget).getSearchWindow().hide();

                 }

             });

         } else {

             searchWidget = new Label(getMessage(FIND_MAJORS));

             searchWidget.setStyleName("contentBlock-navLink-disabled");

         }

         searchWidget.setStyleName("contentBlock-navLink");

         return searchWidget;

     }

     protected Widget getHowToWidget() {

         Anchor widget = new Anchor(getMessage(HOW_TO));

         widget.addClickHandler(new ClickHandler() {

             @Override

             public void onClick(ClickEvent event) {

                 final KSLightBox pop = new KSLightBox();

                 pop.setWidget(new CurriculumHomeHelpTable());

                 pop.setSize(800, 680);

                 pop.show();

             }

         });

         widget.setStyleName("contentBlock-navLink");

         return widget;

     }

     protected Widget getActionListLink() {

         Hyperlink widget = new Hyperlink(getMessage(ACTIONLIST), AppLocations.Locations.HOME.getLocation());

         widget.setStyleName("contentBlock-navLink");

         return widget;

     }

     private String getMessage(String key) {

         return Application.getApplicationContext().getMessage(key);

     }

 }