Enhance company document management with file ID sanitization and detachment functionality

- Updated the `UploadDocuments` method to sanitize document file IDs before saving, ensuring only valid references are stored.
- Introduced `DetachDocumentFileID` method in the `companyService` to remove file IDs from all companies referencing a deleted file, improving data integrity.
- Enhanced the `companyRepository` with a new method to handle the removal of document file IDs from the database.
- Updated the `filestore` handler to utilize the new detachment functionality when files are deleted, ensuring consistent state across domain entities.

This update improves the management of document file IDs within the company domain, enhancing data integrity and reference handling.

internal/company/service.go

@@ -35,6 +35,9 @@ type Service interface {
 	// UploadDocuments uploads files and attaches them to a company
 	UploadDocuments(ctx context.Context, companyID, uploadedBy string, files []*multipart.FileHeader) (*UploadDocumentsResponse, error)
 
+	// DetachDocumentFileID removes a file ID from companies when the file is deleted
+	DetachDocumentFileID(ctx context.Context, fileID string) error
+
 	// StartAIOnboarding sends company data to the AI team for recommendation onboarding
 	StartAIOnboarding(ctx context.Context, companyID string) (*OnboardingResponse, error)
 
@@ -121,7 +124,7 @@ func (s *companyService) Create(ctx context.Context, form *CompanyForm) (*Compan
 		Address:            s.convertAddressForm(form.Address),
 		Phone:              form.Phone,
 		Email:              form.Email,
-		DocumentFileIDs:    form.DocumentFileIDs,
+		DocumentFileIDs:    s.sanitizeDocumentFileIDs(form.DocumentFileIDs),
 		Tags:               s.convertCompanyTagsForm(form.Tags),
 		IsVerified:         false,
 		IsCompliant:        false,
@@ -183,6 +186,8 @@ func (s *companyService) GetByID(ctx context.Context, id string) (*CompanyRespon
 		})
 	}
 
+	company.DocumentFileIDs = s.sanitizeDocumentFileIDs(company.DocumentFileIDs)
+
 	return company.ToResponse(convertedCategories), nil
 }
 
@@ -284,7 +289,7 @@ func (s *companyService) Update(ctx context.Context, id string, form *CompanyFor
 	}
 
 	if form.DocumentFileIDs != nil {
-		company.DocumentFileIDs = form.DocumentFileIDs
+		company.DocumentFileIDs = s.sanitizeDocumentFileIDs(form.DocumentFileIDs)
 	}
 
 	if form.Tags != nil {
@@ -497,6 +502,8 @@ func (s *companyService) GetMyCompany(ctx context.Context, id string) (*CompanyP
 		return nil, errors.New("company not found")
 	}
 
+	company.DocumentFileIDs = s.sanitizeDocumentFileIDs(company.DocumentFileIDs)
+
 	return company.ToProfileResponse(), nil
 }