#546 - added controller with all CRUD methods

src/main/java/de/deadlocker8/budgetmaster/templategroup/TemplateGroupController.java

+package de.deadlocker8.budgetmaster.templategroup;
+
+import de.deadlocker8.budgetmaster.controller.BaseController;
+import de.deadlocker8.budgetmaster.utils.Mappings;
+import de.deadlocker8.budgetmaster.utils.ResourceNotFoundException;
+import de.deadlocker8.budgetmaster.utils.WebRequestUtils;
+import de.deadlocker8.budgetmaster.utils.notification.Notification;
+import de.deadlocker8.budgetmaster.utils.notification.NotificationType;
+import de.thecodelabs.utils.util.Localization;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.WebRequest;
+
+import java.util.Optional;
+
+
+@Controller
+@RequestMapping(Mappings.TEMPLATE_GROUPS)
+public class TemplateGroupController extends BaseController
+{
+	private final TemplateGroupService templateGroupService;
+
+	@Autowired
+	public TemplateGroupController(TemplateGroupService templateGroupService)
+	{
+		this.templateGroupService = templateGroupService;
+	}
+
+	@GetMapping
+	public String showTemplateGroups(Model model)
+	{
+		model.addAttribute("templateGroups", templateGroupService.getAllEntitiesAsc());
+		return "templateGroups/templateGroups";
+	}
+
+	@GetMapping("/{ID}/requestDelete")
+	public String requestDeleteTemplateGroup(Model model, @PathVariable("ID") Integer ID)
+	{
+		final Optional<TemplateGroup> templateGroupOptional = templateGroupService.getRepository().findById(ID);
+		if(templateGroupOptional.isEmpty())
+		{
+			throw new ResourceNotFoundException();
+		}
+
+		model.addAttribute("templateGroups", templateGroupService.getAllEntitiesAsc());
+		model.addAttribute("templateGroupToDelete", templateGroupOptional.get());
+		return "templateGroups/deleteTemplateGroupModal";
+	}
+
+	@GetMapping("/{ID}/delete")
+	public String deleteTemplateGroup(WebRequest request, @PathVariable("ID") Integer ID)
+	{
+		final TemplateGroup templateGroupToDelete = templateGroupService.getRepository().getById(ID);
+		templateGroupService.getRepository().deleteById(ID);
+
+		WebRequestUtils.putNotification(request, new Notification(Localization.getString("notification.template.group.delete.success", templateGroupToDelete.getName()), NotificationType.SUCCESS));
+
+		return "redirect:/templateGroups";
+	}
+
+	@GetMapping("/newTemplateGroup")
+	public String newTemplate(Model model)
+	{
+		final TemplateGroup emptyTemplateGroup = new TemplateGroup();
+		model.addAttribute("templateGroup", emptyTemplateGroup);
+		return "templateGroups/newTemplateGroup";
+	}
+
+	@PostMapping(value = "/newTemplateGroup")
+	public String post(WebRequest request,
+					   Model model,
+					   @ModelAttribute("NewTemplateGroup") TemplateGroup templateGroup, BindingResult bindingResult)
+	{
+		templateGroup.setName(templateGroup.getName().trim());
+
+		TemplateGroupValidator validator = new TemplateGroupValidator();
+		validator.validate(templateGroup, bindingResult);
+
+		if(bindingResult.hasErrors())
+		{
+			model.addAttribute("error", bindingResult);
+			model.addAttribute("templateGroup", templateGroup);
+			return "templateGroups/newTemplateGroup";
+		}
+
+		templateGroupService.getRepository().save(templateGroup);
+
+		WebRequestUtils.putNotification(request, new Notification(Localization.getString("notification.template.save.success", templateGroup.getName()), NotificationType.SUCCESS));
+		return "redirect:/templateGroups";
+	}
+
+	@GetMapping("/{ID}/edit")
+	public String editTemplateGroup(Model model, @PathVariable("ID") Integer ID)
+	{
+		Optional<TemplateGroup> templateGroupOptional = templateGroupService.findById(ID);
+		if(templateGroupOptional.isEmpty())
+		{
+			throw new ResourceNotFoundException();
+		}
+
+		TemplateGroup templateGroup = templateGroupOptional.get();
+		model.addAttribute("templateGroup", templateGroup);
+		return "templateGroups/newTemplateGroup";
+	}
+}
\ No newline at end of file

src/main/java/de/deadlocker8/budgetmaster/templategroup/TemplateGroupValidator.java

+package de.deadlocker8.budgetmaster.templategroup;
+
+import de.deadlocker8.budgetmaster.categories.Category;
+import de.deadlocker8.budgetmaster.utils.Strings;
+import org.springframework.validation.Errors;
+import org.springframework.validation.ValidationUtils;
+import org.springframework.validation.Validator;
+
+
+public class TemplateGroupValidator implements Validator
+{
+	public boolean supports(Class clazz)
+	{
+		return Category.class.equals(clazz);
+	}
+
+	public void validate(Object obj, Errors errors)
+	{
+		ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", Strings.WARNING_EMPTY_TRANSACTION_NAME);
+	}
+}
\ No newline at end of file

src/main/java/de/deadlocker8/budgetmaster/utils/Mappings.java

@@ -21,6 +21,7 @@ public final class Mappings
 	public static final String SETTINGS = "/settings";
 	public static final String TEAPOT = "/418";
 	public static final String TEMPLATES = "/templates";
+	public static final String TEMPLATE_GROUPS = "/templateGroups";
 	public static final String TRANSACTIONS = "/transactions";
 	public static final String TAGS = "/tags";
 	public static final String HINTS = "/hints";