Rewrite identity and access management

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/document_version.go

@@ -46,32 +46,8 @@ type (
 	}
 
 	DocumentVersions []*DocumentVersion
-
-	ErrDocumentVersionNotFound struct {
-		Identifier string
-	}
-
-	ErrDocumentVersionAlreadyExists struct {
-		message string
-	}
-
-	ErrDocumentVersionNoChanges struct {
-		Message string
-	}
 )
 
-func (e ErrDocumentVersionNotFound) Error() string {
-	return fmt.Sprintf("document version not found: %q", e.Identifier)
-}
-
-func (e ErrDocumentVersionAlreadyExists) Error() string {
-	return e.message
-}
-
-func (e ErrDocumentVersionNoChanges) Error() string {
-	return e.Message
-}
-
 func (p *DocumentVersions) LoadByDocumentID(
 	ctx context.Context,
 	conn pg.Conn,
@@ -245,15 +221,8 @@ VALUES (
 		var pgErr *pgconn.PgError
 		if errors.As(err, &pgErr) {
 			if pgErr.Code == "23505" {
-				if pgErr.ConstraintName == "document_versions_document_id_version_number_key" {
-					return &ErrDocumentVersionAlreadyExists{
-						message: fmt.Sprintf("document version with document_id %s and version_number %d already exists", p.DocumentID, p.VersionNumber),
-					}
-				}
-				if pgErr.ConstraintName == "document_one_draft_version_idx" {
-					return &ErrDocumentVersionAlreadyExists{
-						message: fmt.Sprintf("document %s already has a draft version", p.DocumentID),
-					}
+				if pgErr.ConstraintName == "document_versions_document_id_version_number_key" || pgErr.ConstraintName == "document_one_draft_version_idx" {
+					return ErrResourceAlreadyExists
 				}
 			}
 		}