Images are working but still there is need to add isImageMain flag to images.

src/main/java/_11/asktpk/artisanconnectbackend/controller/ImageController.java

@@ -0,0 +1,89 @@
+package _11.asktpk.artisanconnectbackend.controller;
+
+import _11.asktpk.artisanconnectbackend.dto.RequestResponseDTO;
+import _11.asktpk.artisanconnectbackend.service.ImageService;
+import _11.asktpk.artisanconnectbackend.service.NoticeService;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.Resource;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.util.*;
+
+@RestController
+@RequestMapping("/api/v1/images")
+public class ImageController {
+
+    private final ImageService imageService;
+    private final NoticeService noticeService;
+    ImageController(ImageService imageService, NoticeService noticeService) {
+        this.imageService = imageService;
+        this.noticeService = noticeService;
+    }
+
+    @Value("${file.upload-dir}")
+    private String uploadDir;
+
+    @PostMapping("/upload/{id}")
+    public ResponseEntity<RequestResponseDTO> uploadImage(@RequestParam("file") MultipartFile file, @PathVariable("id") Long noticeId) {
+        try {
+            if(file.isEmpty()) {
+                return ResponseEntity.badRequest().body(new RequestResponseDTO("File is empty"));
+            }
+
+            if(!Objects.equals(file.getContentType(), "image/jpeg") && !Objects.equals(file.getContentType(), "image/png")) {
+                return ResponseEntity.badRequest().body(new RequestResponseDTO("File must be a JPEG or PNG image."));
+            }
+
+            if(noticeId == null || !noticeService.noticeExists(noticeId)) {
+                return ResponseEntity.badRequest().body(new RequestResponseDTO("Notice ID is invalid or does not exist."));
+            }
+
+            String newImageName = imageService.saveImageToStorage(uploadDir, file);
+            imageService.addImageUrlToDB(newImageName, noticeId);
+
+            return ResponseEntity.ok(new RequestResponseDTO("Image uploaded successfully with new name: " + newImageName));
+        } catch (Exception e) {
+            return ResponseEntity.status(HttpStatus.UNSUPPORTED_MEDIA_TYPE).body(new RequestResponseDTO(e.getMessage()));
+        }
+    }
+
+    @GetMapping("/get/{filename}")
+    public ResponseEntity<Resource> getImage(@PathVariable String filename) {
+        try {
+            return ResponseEntity.ok()
+                    .contentType(MediaType.IMAGE_JPEG)
+                    .body(imageService.getImage(uploadDir, filename));
+        } catch (Exception e) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).build();
+        }
+    }
+
+    @GetMapping("/list/{id}")
+    public ResponseEntity<List<String>> getImagesNamesList(@PathVariable("id") Long noticeId) {
+        if(noticeId == null) {
+            return ResponseEntity.badRequest().body(Collections.singletonList("Notice ID is invalid or does not exist."));
+        }
+
+        List<String> result;
+        try {
+            result = imageService.getImagesList(noticeId);
+        } catch (Exception e) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(Collections.singletonList(e.getMessage()));
+        }
+        return ResponseEntity.ok(result);
+    }
+
+    @DeleteMapping("/delete/{id}")
+    public ResponseEntity deleteImage(@PathVariable("id") String filename) {
+        try {
+            imageService.deleteImage(uploadDir, filename);
+            return new ResponseEntity<>(HttpStatus.OK);
+        } catch (Exception e) {
+            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+}