feat: stopping with pdfs duplications

app/api/repositories/pdf_repository.py

@@ -20,20 +20,9 @@ class PDFRepository:
         return pdfs
 
     def get_by_nome(self, nome: str) -> PDF:
-        # This method returns the latest pdf with the given nome.
-        # It uses the 'criado' field to determine which pdf is the latest.
-        all_pdfs = self.get_all()
-        latest_pdf = None
-        for pdf in all_pdfs:
-            if pdf.nome == nome:
-                if latest_pdf is None:
-                    latest_pdf = pdf
-                else:
-                    if is_date_after(pdf.criado, latest_pdf.criado):
-                        latest_pdf = pdf
-        if latest_pdf is None:
-            raise Exception(f"PDF com nome {nome} não encontrado.")
-        return latest_pdf
+        # This method returns pdf with the given nome.
+        pdf_dict = self._collection.find_one({"nome": nome})
+        return PDF.parse_obj(pdf_dict)
 
     def create(self, pdf_data: PDF) -> InsertOneResult:
         # On create we need to convert car_data to dict and then insert it into the database.

app/api/services/pdf_service.py

@@ -24,17 +24,26 @@ class PDFService:
     def get_by_nome(self, nome: str) -> PDF:
         try:
             return self._repository.get_by_nome(nome)
-        except Exception as error:
+        except Exception:
             raise HTTPException(
-                status_code=404, detail=error.args[0])
+                status_code=404, detail="PDF não encontrado.")
 
     def create(self, pdf_data: PDF) -> PDF:
-        # Set date attributes.
-        created_date = current_date()
-        pdf_data.criado = created_date
-        pdf_data.ultimo_visto = created_date
-        result = self._repository.create(pdf_data)
-        return self._repository.find_by_id(result.inserted_id)
+        try:
+            # get_by_nome raises a 404 error if the car is not found.
+            self.get_by_nome(pdf_data.nome)
+            # If we got here, that means the pdf already exists in the database.
+            raise ValueError(f"PDF já existente por nome: {pdf_data.nome}.")
+        except HTTPException as e:
+            if e.status_code == 404:
+                created_date = current_date()
+                pdf_data.criado = created_date
+                pdf_data.ultimo_visto = created_date
+                result = self._repository.create(pdf_data)
+                return self._repository.find_by_id(result.inserted_id)
+        except ValueError as e:
+            raise HTTPException(
+                status_code=400, detail=e.args[0])
 
     def update(self, nome: str, pdf_data: PDF) -> PDF:
         pdf_data.ultimo_visto = current_date()