feat: use postgres

notification/internal/adapters/postgres/notificationstore/codecs.go

@@ -0,0 +1,65 @@
+package notificationstore
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// marshalRecipientUserIDs returns the JSONB bytes for the
+// `records.recipient_user_ids` column. A nil/empty slice round-trips as `[]`
+// to keep the column NOT NULL across equality tests.
+func marshalRecipientUserIDs(userIDs []string) ([]byte, error) {
+	if userIDs == nil {
+		userIDs = []string{}
+	}
+	payload, err := json.Marshal(userIDs)
+	if err != nil {
+		return nil, fmt.Errorf("marshal recipient user ids: %w", err)
+	}
+	return payload, nil
+}
+
+// unmarshalRecipientUserIDs decodes the JSONB recipient user-id list. nil
+// payloads round-trip as a nil slice so the read path matches what the
+// service layer accepts (`nil` and an empty `[]` are equivalent for
+// audience_kind != user_set).
+func unmarshalRecipientUserIDs(payload []byte) ([]string, error) {
+	if len(payload) == 0 {
+		return nil, nil
+	}
+	var userIDs []string
+	if err := json.Unmarshal(payload, &userIDs); err != nil {
+		return nil, fmt.Errorf("unmarshal recipient user ids: %w", err)
+	}
+	if len(userIDs) == 0 {
+		return nil, nil
+	}
+	return userIDs, nil
+}
+
+// marshalRawFields returns the JSONB bytes for the
+// `malformed_intents.raw_fields` column. The map is serialised verbatim so
+// future operator queries can match arbitrary keys.
+func marshalRawFields(fields map[string]any) ([]byte, error) {
+	if fields == nil {
+		fields = map[string]any{}
+	}
+	payload, err := json.Marshal(fields)
+	if err != nil {
+		return nil, fmt.Errorf("marshal raw fields: %w", err)
+	}
+	return payload, nil
+}
+
+// unmarshalRawFields decodes the malformed_intents.raw_fields column into a
+// non-nil map (empty {} when the column is null/empty).
+func unmarshalRawFields(payload []byte) (map[string]any, error) {
+	out := map[string]any{}
+	if len(payload) == 0 {
+		return out, nil
+	}
+	if err := json.Unmarshal(payload, &out); err != nil {
+		return nil, fmt.Errorf("unmarshal raw fields: %w", err)
+	}
+	return out, nil
+}