fix:default header crc (#20)

* fix:default header crc

* Update fit_tool/fit_file_builder.py

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: shaonianche

fit_tool/fit_file_builder.py

@@ -36,13 +36,19 @@ def add(self, message: Message):
 
             if stored_definition is None:
                 if self.auto_define:
-                    new_definition = DefinitionMessage.from_data_message(message, min_string_size=self.min_string_size)
+                    new_definition = DefinitionMessage.from_data_message(
+                        message, min_string_size=self.min_string_size
+                    )
                     self.definition_map[message.local_id] = new_definition
                     self.records.append(Record.from_message(new_definition))
                 else:
-                    raise Exception(f"Message has not been defined: ${message.name} local_id: ${message.local_id}")
+                    raise ValueError(
+                        f"Message has not been defined: {message.name} local_id: {message.local_id}"
+                    )
             else:
-                new_definition = DefinitionMessage.from_data_message(message, min_string_size=self.min_string_size)
+                new_definition = DefinitionMessage.from_data_message(
+                    message, min_string_size=self.min_string_size
+                )
                 if not stored_definition.supports(new_definition):
                     if self.auto_define:
                         self.definition_map[new_definition.local_id] = new_definition
@@ -66,7 +72,7 @@ def add_all(self, messages: list[Message]):
 
     def build(self) -> FitFile:
         records_size = calc_records_size(self.records)
-        header = FitFileHeader(records_size=records_size)
+        header = FitFileHeader(records_size=records_size, gen_crc=True)
 
         crc = calc_crc(header, self.records)
         return FitFile(header, self.records, crc)