first commit for Comment Fuctionality

backend/src/main/java/com/neuefische/team2/backend/restaurant/RestaurantController.java

@@ -1,5 +1,6 @@
 package com.neuefische.team2.backend.restaurant;
 
+import com.neuefische.team2.backend.restaurant.domain.NewCommentDTO;
 import com.neuefische.team2.backend.restaurant.domain.NewRestaurantDTO;
 import com.neuefische.team2.backend.exceptions.ResourceNotFoundException;
 import com.neuefische.team2.backend.restaurant.domain.Restaurant;
@@ -12,6 +13,7 @@
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.ArrayList;
 import java.util.List;
 
 @RestController
@@ -37,7 +39,7 @@ Restaurant getRestaurantById(@PathVariable @Valid String id) {
     @PostMapping
     @ResponseStatus(HttpStatus.CREATED)
     public Restaurant addRestaurant(@RequestBody @Valid NewRestaurantDTO newRestaurantDTO) {
-        Restaurant restaurant = new Restaurant(null, newRestaurantDTO.title(), newRestaurantDTO.city());
+        Restaurant restaurant = new Restaurant(null, newRestaurantDTO.title(), newRestaurantDTO.city(), new ArrayList<>());
         return restaurantService.addRestaurant(restaurant);
     }
 
@@ -50,4 +52,16 @@ Restaurant putRestaurant(@Valid @RequestBody NewRestaurantDTO newRestaurantDTO,
     void deleteRestaurant(@PathVariable String id) {
         restaurantService.deleteRestaurant(id);
     }
+
+
+    @PostMapping("/{id}/comments")
+    public Restaurant addComment(@PathVariable String id, @RequestBody NewCommentDTO comment) {
+        return restaurantService.addCommentToRestaurant(id, comment.text());
+    }
+
+
+    @GetMapping("/{id}/comments")
+    public List<Restaurant.Comment> getComments(@PathVariable String id) {
+        return restaurantService.getCommentsForRestaurant(id);
+    }
 }

backend/src/main/java/com/neuefische/team2/backend/restaurant/RestaurantService.java

@@ -8,6 +8,7 @@
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
 import java.util.List;
 
 @Service
@@ -44,12 +45,13 @@ public Restaurant addRestaurant(Restaurant restaurant) {
 
     public Restaurant updateRestaurant(NewRestaurantDTO updatedRestaurantDTO, String id) throws ResourceNotFoundException {
         logger.info("Trying to update restaurant with ID {}", id);
-
+        Restaurant existingRestaurant = this.findRestaurantById(id);
         this.findRestaurantById(id);
         Restaurant updatedRestaurant = new Restaurant(
                 id,
                 updatedRestaurantDTO.title().trim(),
-                updatedRestaurantDTO.city().trim()
+                updatedRestaurantDTO.city().trim(),
+                existingRestaurant.comments()
         );
         Restaurant savedRestaurant = restaurantRepository.save(updatedRestaurant);
 
@@ -61,4 +63,29 @@ public void deleteRestaurant(String id) {
         this.findRestaurantById(id);
         restaurantRepository.deleteById(id);
     }
+
+    public Restaurant addCommentToRestaurant(String id, String commentText) throws ResourceNotFoundException {
+        logger.info("Trying to add comment to restaurant with ID {}", id);
+
+        Restaurant restaurant = this.findRestaurantById(id);
+        List<Restaurant.Comment> updatedComments = new ArrayList<>(restaurant.comments() != null ? restaurant.comments() : new ArrayList<>());
+        Restaurant.Comment comment = new Restaurant.Comment(commentText, System.currentTimeMillis());
+        updatedComments.add(comment);
+
+        Restaurant updatedRestaurant = new Restaurant(
+                restaurant.id(),
+                restaurant.title(),
+                restaurant.city(),
+                updatedComments
+        );
+        return restaurantRepository.save(updatedRestaurant);
+    }
+
+
+    public List<Restaurant.Comment> getCommentsForRestaurant(String id) throws ResourceNotFoundException {
+        logger.info("Trying to get comments for restaurant with ID {}", id);
+
+        Restaurant restaurant = this.findRestaurantById(id);
+        return restaurant.comments();
+    }
 }

backend/src/main/java/com/neuefische/team2/backend/restaurant/domain/NewCommentDTO.java

@@ -0,0 +1,7 @@
+package com.neuefische.team2.backend.restaurant.domain;
+
+public record NewCommentDTO(
+        String text
+
+) {
+}

backend/src/main/java/com/neuefische/team2/backend/restaurant/domain/Restaurant.java

@@ -4,6 +4,8 @@
 import jakarta.validation.constraints.NotBlank;
 import org.springframework.data.mongodb.core.mapping.Document;
 
+import java.util.List;
+
 @Document("restaurants")
 public record Restaurant(
         @Id
@@ -13,6 +15,11 @@ public record Restaurant(
         String title,
 
         @NotBlank(message = "Restaurant-Stadt muss vorhanden sein.")
-        String city
+        String city,
+        List<Comment> comments
 ) {
+        public record Comment(
+                String text,
+                long createdAt
+        ) {}
 }

frontend/src/components/Comments/CommentsSection.tsx

@@ -0,0 +1,56 @@
+import { useState, useEffect } from "react";
+import axios from "axios";
+
+type CommentsSectionProps = {
+  restaurantId: string;
+};
+
+function CommentsSection({ restaurantId }: CommentsSectionProps) {
+  const [comments, setComments] = useState<{ text: string }[]>([]);
+  const [newComment, setNewComment] = useState<{ text: string }>({ text: "" });
+
+  useEffect(() => {
+    axios
+      .get(`/api/restaurants/${restaurantId}/comments`)
+      .then((response) => {
+        setComments(response.data);
+      })
+      .catch((error) => {
+        console.error("There was an error fetching the comments!", error);
+      });
+  }, [restaurantId]);
+
+  const handleAddComment = () => {
+    axios
+      .post(`/api/restaurants/${restaurantId}/comments`, newComment)
+      .then((response) => {
+        setComments(response.data.comments);
+        setNewComment({ text: "" });
+      })
+      .catch((error) => {
+        console.error("There was an error adding the comment!", error);
+      });
+  };
+
+  return (
+    <div>
+      <h3>Comments</h3>
+      <input
+        type="text"
+        value={newComment.text}
+        onChange={(e) => setNewComment({ text: e.target.value })}
+        placeholder="Add a comment"
+      />
+      <button onClick={handleAddComment}>Add Comment</button>
+      <ul>
+        {comments.length > 0 ? (
+          comments.map((comment, index) => <li key={index}>{comment.text}</li>)
+        ) : (
+          <li>No comments available.</li>
+        )}
+      </ul>
+    </div>
+  );
+}
+
+export default CommentsSection;

frontend/src/pages/ViewRestaurantPage.tsx

@@ -9,6 +9,7 @@ import { logtail } from "../logger.ts";
 import AlertBox from "../components/AlertBox/AlertBox.tsx";
 import { mutate } from "swr";
 import { RestaurantType } from "../model/Restaurant.ts";
+import CommentsSection from "../components/Comments/CommentsSection.tsx";
 
 export default function ViewRestaurantPage() {
   const navigate = useNavigate();
@@ -78,6 +79,7 @@ export default function ViewRestaurantPage() {
       >
         Delete
       </Button>
+      <CommentsSection restaurantId={id} />
     </DefaultPageTemplate>
   );
 }