Added task06

task06/src/main/java/de/hftstuttgart/vs/task06/Task06Application.java

@@ -0,0 +1,13 @@
+package de.hftstuttgart.vs.task06;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Task06Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Task06Application.class, args);
+	}
+
+}

task06/src/main/java/de/hftstuttgart/vs/task06/api/graphql/GraphQLAPI.java

@@ -0,0 +1,34 @@
+package de.hftstuttgart.vs.task06.api.graphql;
+
+import de.hftstuttgart.vs.task06.api.graphql.model.HelloWorldDO;
+import de.hftstuttgart.vs.task06.bm.BlogController;
+import jakarta.annotation.Nonnull;
+import org.springframework.graphql.data.method.annotation.QueryMapping;
+import org.springframework.graphql.data.method.annotation.SchemaMapping;
+import org.springframework.stereotype.Controller;
+
+@Controller
+public class GraphQLAPI implements QueryResolver {
+
+    private final BlogController blogController;
+
+    public GraphQLAPI(final BlogController blogController) {
+        this.blogController = blogController;
+    }
+
+    @Nonnull
+    @Override
+    @QueryMapping
+    public HelloWorldDO helloWorld() {
+        return new HelloWorldDO();
+    }
+
+    @SchemaMapping
+    public String message(final HelloWorldDO helloWorld) {
+        return "Hello World!";
+    }
+
+    //TODO 3: Add mappings for queries and mutations defined in your schema
+
+    //TODO 5: Add field mapping for count of comments for a post
+}

task06/src/main/java/de/hftstuttgart/vs/task06/api/graphql/mapper/CommentMapper.java

@@ -0,0 +1,13 @@
+package de.hftstuttgart.vs.task06.api.graphql.mapper;
+
+//import de.hftstuttgart.vs.task06.bm.model.Comment;
+//import de.hftstuttgart.vs.task06.api.graphql.model.CommentDO;
+
+public class CommentMapper {
+
+    /*public static CommentDO map(final Comment comment) {
+        return CommentDO.builder()
+                .setText(comment.getText())
+                .build();
+    }*/
+}

task06/src/main/java/de/hftstuttgart/vs/task06/api/graphql/mapper/PostMapper.java

@@ -0,0 +1,15 @@
+package de.hftstuttgart.vs.task06.api.graphql.mapper;
+
+//import de.hftstuttgart.vs.task06.api.graphql.model.PostDO;
+//import de.hftstuttgart.vs.task06.bm.model.Post;
+public class PostMapper {
+
+    /*public static PostDO map(final Post post) {
+        return PostDO.builder()
+                .setPostID(post.getPostID())
+                .setText(post.getText())
+                .setState(PostStateMapper.map(post.getState()))
+                .build();
+    }*/
+
+}

task06/src/main/java/de/hftstuttgart/vs/task06/api/graphql/mapper/PostStateMapper.java

@@ -0,0 +1,15 @@
+package de.hftstuttgart.vs.task06.api.graphql.mapper;
+
+//import de.hftstuttgart.vs.task06.api.graphql.model.PostStateDO;
+//import de.hftstuttgart.vs.task06.bm.model.PostState;
+
+public class PostStateMapper {
+
+    /*public static PostStateDO map(final PostState state) {
+        return PostStateDO.valueOf(state.toString());
+    }
+
+    public static PostState map(final PostStateDO state) {
+        return PostState.valueOf(state.toString());
+    }*/
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/BlogController.java

@@ -0,0 +1,99 @@
+package de.hftstuttgart.vs.task06.bm;
+
+import de.hftstuttgart.vs.task06.bm.exceptions.PostNotFound;
+import de.hftstuttgart.vs.task06.bm.exceptions.UserNotFound;
+import de.hftstuttgart.vs.task06.bm.model.Comment;
+import de.hftstuttgart.vs.task06.bm.model.Post;
+import de.hftstuttgart.vs.task06.bm.model.PostState;
+import de.hftstuttgart.vs.task06.bm.model.User;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+public class BlogController implements UserRepository, PostRepository {
+
+    private final Map<String, User> users;
+    private final Map<Integer, Post> posts;
+    private int nextID = 1;
+
+    public BlogController() {
+        users = new HashMap<>();
+        users.put("mmustermann", new User("mmustermann", "Max", "Mustermann"));
+        users.put("jdoe", new User("jdoe", "John", "Doe"));
+        posts = new HashMap<>();
+        posts.put(1, new Post(1, "This is an example post", PostState.PUBLISHED, "mmustermann", new ArrayList<>()));
+        posts.get(1).getComments().add(new Comment("Great post!", "jdoe"));
+    }
+
+    @Override
+    public List<Post> getPosts() {
+        return posts.values().stream().toList();
+    }
+
+    @Override
+    public Post getPost(final int postID) {
+        return posts.get(postID);
+    }
+
+    @Override
+    public Post addPost(final String userName, final String text) {
+        final var postID = nextID++;
+        final var post = new Post(postID, text, PostState.UNPUBLISHED, userName, new ArrayList<>());
+        posts.put(postID, post);
+        return post;
+    }
+
+    @Override
+    public Post editPost(final int postID, final String text) throws PostNotFound {
+        if (!posts.containsKey(postID)) {
+            throw new PostNotFound();
+        }
+        final var post = posts.get(postID);
+        post.setText(text);
+        return post;
+    }
+
+    @Override
+    public Post changePostState(final int postID, final PostState state) throws PostNotFound {
+        if (!posts.containsKey(postID)) {
+            throw new PostNotFound();
+        }
+        final var post = posts.get(postID);
+        post.setState(state);
+        return post;
+    }
+
+    @Override
+    public Comment addComment(final int postID, final String userName, final String commentText) throws PostNotFound {
+        if (!posts.containsKey(postID)) {
+            throw new PostNotFound();
+        }
+        final var post = posts.get(postID);
+        final var comment = new Comment(commentText, userName);
+        post.addComment(comment);
+        return comment;
+    }
+
+    @Override
+    public List<User> getUsers() {
+        return users.values().stream().toList();
+    }
+
+    @Override
+    public User getUser(final String userName) throws UserNotFound {
+        final var user = users.get(userName);
+        if (user == null) {
+            throw new UserNotFound();
+        }
+        return user;
+    }
+
+    public int getCommentCount(final int postID) {
+        throw new RuntimeException("NOT IMPLEMENTED");
+        //TODO 4: implement method counting the comments for a post
+    }
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/PostRepository.java

@@ -0,0 +1,24 @@
+package de.hftstuttgart.vs.task06.bm;
+
+import de.hftstuttgart.vs.task06.bm.exceptions.PostNotFound;
+import de.hftstuttgart.vs.task06.bm.model.Comment;
+import de.hftstuttgart.vs.task06.bm.model.Post;
+import de.hftstuttgart.vs.task06.bm.model.PostState;
+
+import java.util.List;
+
+public interface PostRepository {
+
+    List<Post> getPosts();
+
+    Post getPost(int postID);
+
+    Post addPost(String userName, String text);
+
+    Post editPost(int postID, String text) throws PostNotFound;
+
+    Post changePostState(int postID, PostState state) throws PostNotFound;
+
+    Comment addComment(int postID, String userName, String comment) throws PostNotFound;
+
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/UserRepository.java

@@ -0,0 +1,14 @@
+package de.hftstuttgart.vs.task06.bm;
+
+import de.hftstuttgart.vs.task06.bm.exceptions.UserNotFound;
+import de.hftstuttgart.vs.task06.bm.model.User;
+
+import java.util.List;
+
+public interface UserRepository {
+
+    List<User> getUsers();
+
+    User getUser(String userName) throws UserNotFound;
+
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/exceptions/PostNotFound.java

@@ -0,0 +1,4 @@
+package de.hftstuttgart.vs.task06.bm.exceptions;
+
+public class PostNotFound extends Exception {
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/exceptions/UserNotFound.java

@@ -0,0 +1,4 @@
+package de.hftstuttgart.vs.task06.bm.exceptions;
+
+public class UserNotFound extends Exception {
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/model/Comment.java

@@ -0,0 +1,51 @@
+package de.hftstuttgart.vs.task06.bm.model;
+
+import java.util.Objects;
+
+public final class Comment {
+    private String text;
+    private String userName;
+
+    public Comment(final String text, final String userName) {
+        this.text = text;
+        this.userName = userName;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void setText(final String text) {
+        this.text = text;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(final String userName) {
+        this.userName = userName;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (obj == this) return true;
+        if (obj == null || obj.getClass() != this.getClass()) return false;
+        final var that = (Comment) obj;
+        return Objects.equals(this.text, that.text) &&
+                Objects.equals(this.userName, that.userName);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(text, userName);
+    }
+
+    @Override
+    public String toString() {
+        return "Comment[" +
+                "text=" + text + ", " +
+                "userName=" + userName + ']';
+    }
+
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/model/Post.java

@@ -0,0 +1,75 @@
+package de.hftstuttgart.vs.task06.bm.model;
+
+import java.util.List;
+import java.util.Objects;
+
+public final class Post {
+    private final int postID;
+    private final String userName;
+    private final List<Comment> comments;
+    private String text;
+    private PostState state;
+
+    public Post(final int postID, final String text, final PostState state, final String userName,
+                final List<Comment> comments) {
+        this.postID = postID;
+        this.text = text;
+        this.state = state;
+        this.userName = userName;
+        this.comments = comments;
+    }
+
+    public int getPostID() {
+        return postID;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void setText(final String text) {
+        this.text = text;
+    }
+
+    public PostState getState() {
+        return state;
+    }
+
+    public void setState(final PostState state) {
+        this.state = state;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public List<Comment> getComments() {
+        return comments;
+    }
+
+    public void addComment(final Comment comment) {
+        comments.add(comment);
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (obj == this) return true;
+        if (obj == null || obj.getClass() != this.getClass()) return false;
+        final var that = (Post) obj;
+        return Objects.equals(this.text, that.text) &&
+                Objects.equals(this.state, that.state) && Objects.equals(this.userName, that.userName) &&
+                Objects.equals(this.comments, that.comments);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(text, state, userName, comments);
+    }
+
+    @Override
+    public String toString() {
+        return "Post[" + "text=" + text + ", " + "state=" + state + ", " + "userName=" +
+                userName + ", " + "comments=" + comments + ']';
+    }
+
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/model/PostState.java

@@ -0,0 +1,5 @@
+package de.hftstuttgart.vs.task06.bm.model;
+
+public enum PostState {
+    PUBLISHED, UNPUBLISHED, LOCKED
+}

task06/src/main/java/de/hftstuttgart/vs/task06/bm/model/User.java

@@ -0,0 +1,59 @@
+package de.hftstuttgart.vs.task06.bm.model;
+
+import java.util.Objects;
+
+public final class User {
+    private final String userName;
+    private String firstName;
+    private String lastName;
+
+    public User(final String userName, final String firstName, final String lastName) {
+        this.userName = userName;
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(final String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(final String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (obj == this) return true;
+        if (obj == null || obj.getClass() != this.getClass()) return false;
+        final var that = (User) obj;
+        return Objects.equals(this.userName, that.userName) &&
+                Objects.equals(this.firstName, that.firstName) &&
+                Objects.equals(this.lastName, that.lastName);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(userName, firstName, lastName);
+    }
+
+    @Override
+    public String toString() {
+        return "User[" +
+                "userName=" + userName + ", " +
+                "firstName=" + firstName + ", " +
+                "lastName=" + lastName + ']';
+    }
+
+}

task06/src/main/resources/application.properties

@@ -0,0 +1 @@
+spring.graphql.graphiql.enabled=true

task06/src/main/resources/graphql/schema.graphqls

@@ -0,0 +1,11 @@
+type Query {
+    helloWorld: HelloWorld!
+}
+
+type HelloWorld {
+    message: String
+}
+
+# TODO 1: Add type definitions for the blog service
+
+# TODO 2: Add queries and mutations with the corresponding parameters and return types

task06/src/test/java/de/hftstuttgart/vs/task06/Task06ApplicationTests.java

@@ -0,0 +1,13 @@
+package de.hftstuttgart.vs.task06;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class Task06ApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}