Function ParseContent

coderd/x/chatd/chatprompt/chatprompt.go:337–352

ParseContent decodes persisted chat message content blocks into SDK parts. Dispatches on content version: version 0 (legacy) uses a role-aware heuristic to distinguish fantasy envelope format from SDK parts, version 1 (current) unmarshals SDK-format []ChatMessagePart directly.

(msg database.ChatMessage)

// from SDK parts, version 1 (current) unmarshals SDK-format
// []ChatMessagePart directly.
func ParseContent(msg database.ChatMessage) ([]codersdk.ChatMessagePart, error) {
	if !msg.Content.Valid || len(msg.Content.RawMessage) == 0 {
		return nil, nil
	}

	role := codersdk.ChatMessageRole(msg.Role)

	switch msg.ContentVersion {
	case ContentVersionV0:
		return parseLegacyContent(role, msg.Content)
	case ContentVersionV1:
		return parseContentV1(role, msg.Content)
	default:
		return nil, xerrors.Errorf("unsupported content version %d", msg.ContentVersion)
	}
}

// parseLegacyContent handles content version 0, where the format
// varies by role and era. Uses structural heuristics to distinguish