Function BuildLastInjectedContext

coderd/x/chatd/contextparts.go:125–153

BuildLastInjectedContext filters parts down to non-empty context-file and skill parts, strips their internal fields, and marshals the result for LastInjectedContext. A nil or fully filtered input returns an invalid NullRawMessage.

(
	parts []codersdk.ChatMessagePart,
)

// result for LastInjectedContext. A nil or fully filtered input returns
// an invalid NullRawMessage.
func BuildLastInjectedContext(
	parts []codersdk.ChatMessagePart,
) (pqtype.NullRawMessage, error) {
	if parts == nil {
		return pqtype.NullRawMessage{Valid: false}, nil
	}

	filtered := FilterContextParts(parts, false)
	if len(filtered) == 0 {
		return pqtype.NullRawMessage{Valid: false}, nil
	}

	stripped := make([]codersdk.ChatMessagePart, 0, len(filtered))
	for _, part := range filtered {
		cp := part
		cp.StripInternal()
		stripped = append(stripped, cp)
	}

	raw, err := json.Marshal(stripped)
	if err != nil {
		return pqtype.NullRawMessage{}, xerrors.Errorf(
			"marshal injected context: %w",
			err,
		)
	}

	return pqtype.NullRawMessage{RawMessage: raw, Valid: true}, nil
}