Feat/get post file url

src/main/java/api/educai/controllers/PostController.java

@@ -54,6 +54,12 @@ public ResponseEntity<PostDTO> getPostById(@PathVariable String id){
         return ResponseEntity.status(200).body(mapper.map(postService.getPostById(id), PostDTO.class));
     }
 
+    @Operation(summary = "Retorna a URL para download de um post específico passando seu ID")
+    @GetMapping("/{id}/download")
+    public ResponseEntity<String> getPostUrlById(@PathVariable String id){
+        return ResponseEntity.status(200).body(postService.getPostUrlById(id));
+    }
+
     @Operation(summary = "Atualiza o título de um post")
     @Secured("ROLE_TEACHER")
     @PatchMapping("/{id}")

src/main/java/api/educai/dto/PostDTO.java

@@ -15,6 +15,7 @@ public class PostDTO {
     @NotBlank
     @Size(max = 100)
     private String description;
-    private String url;
+    private String file;
+    private String originalFileName;
     private LocalDate datePosting;
 }

src/main/java/api/educai/entities/Post.java

@@ -22,6 +22,7 @@ public class Post {
     @Size(max = 100)
     private String description;
     private String file;
+    private String originalFileName;
     @NotNull
     private LocalDate datePosting;
 }

src/main/java/api/educai/services/PostService.java

@@ -35,6 +35,7 @@ public Post createPost(NewPostDTO newPost, MultipartFile file) {
         if (file != null) {
             try {
                 String path = azureBlobService.upload(file);
+                post.setOriginalFileName(file.getOriginalFilename());
                 post.setFile(path);
             } catch (IOException ex) {
                 throw new ResponseStatusException(HttpStatusCode.valueOf(500), "Error while trying to upload file!");
@@ -57,16 +58,16 @@ public List<Post> getPosts() {
         return posts;
     }
 
-    public Post getPostById(String id){
+    public Post getPostById(String id) {
         ObjectId idPost = new ObjectId(id);
         Post post = postRepository.findById(idPost);
-        if(post == null){
+        if (post == null) {
             throw new ResponseStatusException(HttpStatusCode.valueOf(204), "No posts found with that id");
         }
         return post;
     }
 
-    public Post updatePost(ObjectId id, PatchPost updatedPost){
+    public Post updatePost(ObjectId id, PatchPost updatedPost) {
 
         Post post = postRepository.findById(id);
         post.setTitle(updatedPost.getTitle());
@@ -76,8 +77,17 @@ public Post updatePost(ObjectId id, PatchPost updatedPost){
         return post;
     }
 
-    public Post deletePost(String id){
+    public Post deletePost(String id) {
         ObjectId idPost = new ObjectId(id);
         return postRepository.deleteById(idPost);
     }
+
+    public String getPostUrlById(String id) {
+        Post post = getPostById(id);
+        String path = post.getFile();
+        String[] parts = path.split("/");
+        String fileName = parts[parts.length - 1];
+        return azureBlobService.getBlobUrl(fileName);
+
+    }
 }