Draft: Add HeadTA Job Offers + Constraint Violation Errors

Description

• Add HeadTA Job Offers
• Add Constraint Violation Error Messages

Related Issues

• Resolve #192
• Resolve #196

Checklist

• I have added a changelog entry to reflect the significant changes I made.

src/main/java/nl/tudelft/tam/controller/advice/GlobalExceptionHandler.java

+/*
+ * TAM
+ * Copyright (C) 2021 - Delft University of Technology
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package nl.tudelft.tam.controller.advice;
+
+import java.util.stream.Collectors;
+
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+import nl.tudelft.tam.exception.ConstraintViolationDetailedException;
+
+@ControllerAdvice
+public class GlobalExceptionHandler {
+
+	@ExceptionHandler(ConstraintViolationDetailedException.class)
+	public String handleConstraintViolationException(Model model, ConstraintViolationDetailedException ex) {
+		StackTraceElement topOfStack = ex.getStackTrace()[0];
+		String className = topOfStack.getClassName();
+		String methodName = topOfStack.getMethodName();
+
+		String errorMessage = ex.getConstraintViolations().stream()
+				.map(violation -> violation.getPropertyPath() + " " + violation.getMessage())
+				.collect(Collectors.joining(", "));
+
+		switch (className) {
+			case "nl.tudelft.tam.controller.JobOfferController":
+				switch (methodName) {
+					case "createJobOffer":
+						model.addAttribute("jobOfferCreationError", errorMessage);
+						return "job_offer/manage";
+					case "patchJobOffer":
+						model.addAttribute("editingError", errorMessage);
+						return "redirect:/job-offer/" + ex.getRedirectId();
+					case "patchJobOfferMessages":
+						model.addAttribute("messageEditingError", errorMessage);
+						return "redirect:/job-offer/" + ex.getRedirectId();
+				}
+			case "nl.tudelft.tam.controller.ExtraWorkController":
+				switch (methodName) {
+					case "createExtraWork":
+						model.addAttribute("extraWorkCreationError", errorMessage);
+						return "job_offer/manage";
+					case "patchExtraWork":
+						model.addAttribute("editingError", errorMessage);
+						return "redirect:/extra-work/" + ex.getRedirectId();
+				}
+		}
+
+		throw ex;
+	}
+
+}