Implement staff with salespoint

Co-authored-by: Eren Asker <eren.asker@mailbox.tu-dresden.de>

src/main/java/catering/staff/Staff.java

@@ -1,20 +1,28 @@
 package catering.staff;
 
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+
+import org.springframework.data.domain.AbstractAggregateRoot;
+
+@Entity
 public class Staff {
 
-	private int id;
+	private String surname, name, job;
-	private String surname;
+	private @Id @GeneratedValue Long id;
-	private String name;
+
-	private String job;
+	protected Staff() {
+		// No-argument constructor for JPA
+	}
 
 	public Staff(String name, String surname, String job) {
-		this.id = (int) (Math.random() * 10 * Math.random() * 10 + Math.random() * 10);
 		this.name = name;
 		this.surname = surname;
 		this.job = job;
 	}
 
-	public int getId() {
+	public Long getId() {
 		return id;
 	}
 
@@ -30,10 +38,6 @@ public class Staff {
 		return job;
 	}
 
-	public void setId(int id) {
-		this.id = id;
-	}
-
 	public void setSurname(String surname) {
 		this.surname = surname;
 	}
@@ -45,5 +49,4 @@ public class Staff {
 	public void setJob(String job) {
 		this.job = job;
 	}
-
 }

src/main/java/catering/staff/StaffController.java

@@ -1,55 +1,70 @@
 package catering.staff;
 
+import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestParam;
+
 import org.springframework.ui.Model;
 
 @Controller
 public class StaffController {
 
-	private final StaffRepository staffRepository;
+	private final StaffManagement staffManagement;
 
-	public StaffController(StaffRepository staffRepository) {
+	public StaffController(StaffManagement staffManagement) {
-		this.staffRepository = staffRepository;
+		this.staffManagement = staffManagement;
 	}
 
 	@GetMapping("/staff")
+	@PreAuthorize("hasRole('ADMIN')")
 	public String getStaff(Model model) {
 		model.addAttribute("title", "Personalverwaltung");
-		model.addAttribute("staffs", staffRepository.getStaffs());
+		model.addAttribute("staff", staffManagement.findAll());
 		return "staff";
 	}
 
 	@PostMapping("/staff/remove")
-	public String removeStaff(@RequestParam("staffID") int staffID, Model model) {
+	@PreAuthorize("hasRole('ADMIN')")
-		staffRepository.removeStaff(staffID);
+	public String removeStaff(@RequestParam("staffID") Staff staff, Model model) {
+		staffManagement.deleteStaff(staff.getId());
 		return "redirect:/staff";
 	}
 
 	@PostMapping("/staff/add")
+	@PreAuthorize("hasRole('ADMIN')")
 	public String addStaff(
 		@RequestParam String name,
 		@RequestParam String surname,
 		@RequestParam String job,
-			Model model) {
+		Model model
+	) {
 		Staff newStaff = new Staff(name, surname, job);
-		staffRepository.save(newStaff);
+		staffManagement.save(newStaff);
 		return "redirect:/staff";
 	}
 
 	@GetMapping("/staff/edit/{id}")
-	public String editStaff(@PathVariable("id") int id, Model model) {
+	@PreAuthorize("hasRole('ADMIN')")
-		staffRepository.findById(id).ifPresent(staff -> model.addAttribute("staff", staff));
+	public String editStaff(@PathVariable("id") Staff staff, Model model) {
+		model.addAttribute("staff", staff);
 		return "edit-staff";
 	}
 
-	@PostMapping("/staff/update")
+	@PostMapping("/staff/edit/{id}")
-	public String updateStaff(@ModelAttribute Staff staff) {
+	@PreAuthorize("hasRole('ADMIN')")
-		staffRepository.save(staff);
+	public String updateStaff(
+		@PathVariable("id") Staff staff,
+		@RequestParam String name,
+		@RequestParam String surname,
+		@RequestParam String job
+	) {
+		staff.setJob(job);
+		staff.setName(name);
+		staff.setSurname(surname);
+		staffManagement.save(staff);
 		return "redirect:/staff";
 	}
 }

src/main/java/catering/staff/StaffDataInitializer.java

@@ -1,35 +0,0 @@
-package catering.staff;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import org.springframework.stereotype.Component;
-import org.springframework.util.Assert;
-
-import jakarta.annotation.PostConstruct;
-
-@Component
-
-public class StaffDataInitializer {
-
-	private static final Logger LOG = LoggerFactory.getLogger(StaffDataInitializer.class);
-
-	private final StaffRepository staffRepository;
-
-	public StaffDataInitializer(StaffRepository staffRepository) {
-		Assert.notNull(staffRepository, "StaffRepository must not be null!");
-		this.staffRepository = staffRepository;
-	}
-
-	@PostConstruct
-	public void initialize() {
-
-		LOG.info("Creating default staff.");
-
-		staffRepository.save(new Staff("Max", "Musterkoch", "Koch"));
-		staffRepository.save(new Staff("Julia", "Musterfrau", "Servicekraft"));
-
-		LOG.info("Default staff created");
-
-	}
-}

src/main/java/catering/staff/StaffManagement.java

@@ -0,0 +1,39 @@
+package catering.staff;
+
+import java.util.Optional;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.SessionAttributes;
+import org.springframework.stereotype.Component;
+
+@Component
+@Transactional
+@SessionAttributes("staff")
+public class StaffManagement {
+
+	private final StaffRepository staffRepository;
+
+	public StaffManagement(StaffRepository staffRepository) {
+		this.staffRepository = staffRepository;
+	}
+
+	public Staff addStaff(Staff staff) {
+		return staffRepository.save(staff);
+	}
+
+	public Optional<Staff> findById(Long staffID) {
+		return staffRepository.findById(staffID);
+	}
+
+	public void save(Staff staff) {
+		staffRepository.save(staff);
+	}
+
+	public Iterable<Staff> findAll() {
+		return staffRepository.findAll();
+	}
+
+	public void deleteStaff(Long staffID) {
+		staffRepository.deleteById(staffID);
+	}
+
+}

src/main/java/catering/staff/StaffRepository.java

@@ -1,53 +1,10 @@
 package catering.staff;
 
-import org.springframework.stereotype.Component;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.util.Streamable;
 
-import java.util.ArrayList;
+interface StaffRepository extends CrudRepository<Staff, Long> {
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.Optional;
-import java.util.Set;
-
-@Component
-public class StaffRepository {
-
-	private Set<Staff> staffs = new HashSet<>();
-
-	public StaffRepository() {
-	}
-
-	public boolean addStaff(Staff staff) {
-		return this.staffs.add(staff);
-	}
-
-	private int nextId = (int) (Math.random() * 10 * Math.random() * 10 + Math.random() * 10);
-
-	public void save(Staff staff) {
-
-		if (staff.getId() == 0) {
-			staff.setId(nextId++);
-		} else {
-
-			this.staffs.removeIf(p -> p.getId() == staff.getId());
-		}
-
-		this.staffs.add(staff);
-	}
-
-	public long count() {
-		return this.staffs.size();
-	}
-
-	public boolean removeStaff(int staffID) {
-		return this.staffs.removeIf(staff -> staff.getId() == staffID);
-	}
-
-	public Collection<Staff> getStaffs() {
-		return new ArrayList<>(this.staffs);
-	}
-
-	public Optional<Staff> findById(int id) {
-		return this.staffs.stream().filter(staff -> staff.getId() == id).findFirst();
-	}
 
+	@Override
+	Streamable<Staff> findAll();
 }

src/main/resources/templates/edit-staff.html

@@ -7,7 +7,7 @@
 	</head>
 	<body>
 		<div layout:fragment="content">
-			<form th:action="@{/staff/update}" th:object="${staff}" method="post">
+			<form th:object="${staff}" method="post">
 				<input type="hidden" th:field="*{id}" />
 				<div class="mb-3">
 					<label class="form-label" for="name">Name:</label>

src/main/resources/templates/staff.html

@@ -1,31 +1,32 @@
 <!DOCTYPE html>
-<html xmlns:th="http://www.thymeleaf.org"
+<html
+	xmlns:th="http://www.thymeleaf.org"
 	xmlns:sec="http://www.thymeleaf.org/extras/spring-security"
 	xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
-	layout:decorate="~{layout.html(title='Angestellte')}">
+	layout:decorate="~{layout.html(title='Angestellte')}"
-	<head>
+>
-	</head>
+	<head> </head>
 	<body>
 		<div layout:fragment="content">
 			<div>
 				<h2>Mitarbeiterdetails</h2>
 				<table class="table">
 					<tr>
-						<th>ID</th>
+						<th>Name</th>
 						<th>Nachname</th>
-						<th>Vorname</th>
 						<th>Beruf</th>
 						<th></th>
 						<th></th>
 					</tr>
 
-					<tr th:each="staff : ${staffs}">
+					<tr th:each="staff : ${staff}">
-						<td th:text="${staff.id}">01</td>
-						<td th:text="${staff.surname}">Musterkoch</td>
 						<td th:text="${staff.name}">Max</td>
+						<td th:text="${staff.surname}">Musterkoch</td>
 						<td th:text="${staff.job}">Koch</td>
 						<td>
-							<a th:href="@{'/staff/edit/' + ${staff.id}}"><button class="btn btn-warning">Bearbeiten</button></a>
+							<a th:href="@{'/staff/edit/' + ${staff.id}}"
+								><button class="btn btn-warning">Bearbeiten</button></a
+							>
 						</td>
 						<td>
 							<form th:action="@{/staff/remove}" method="post">