feat(store): per-account inbound/outbound whitelist CRUD

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

internal/store/whitelist.go

@@ -0,0 +1,88 @@
+package store
+
+import (
+	"fmt"
+	"strings"
+)
+
+type Direction string
+
+const (
+	DirIn  Direction = "in"
+	DirOut Direction = "out"
+)
+
+func (d Direction) table() (string, error) {
+	switch d {
+	case DirIn:
+		return "whitelist_in", nil
+	case DirOut:
+		return "whitelist_out", nil
+	default:
+		return "", fmt.Errorf("invalid direction %q", d)
+	}
+}
+
+func (s *Store) accountID(name string) (int64, error) {
+	a, err := s.GetAccount(name)
+	if err != nil {
+		return 0, err
+	}
+	return a.ID, nil
+}
+
+func (s *Store) AddWhitelist(account string, dir Direction, address string) error {
+	tbl, err := dir.table()
+	if err != nil {
+		return err
+	}
+	id, err := s.accountID(account)
+	if err != nil {
+		return err
+	}
+	_, err = s.db.Exec(
+		fmt.Sprintf("INSERT OR IGNORE INTO %s(account_id,address) VALUES(?,?)", tbl),
+		id, strings.ToLower(address))
+	return err
+}
+
+func (s *Store) RemoveWhitelist(account string, dir Direction, address string) error {
+	tbl, err := dir.table()
+	if err != nil {
+		return err
+	}
+	id, err := s.accountID(account)
+	if err != nil {
+		return err
+	}
+	_, err = s.db.Exec(
+		fmt.Sprintf("DELETE FROM %s WHERE account_id=? AND address=?", tbl),
+		id, strings.ToLower(address))
+	return err
+}
+
+func (s *Store) ListWhitelist(account string, dir Direction) ([]string, error) {
+	tbl, err := dir.table()
+	if err != nil {
+		return nil, err
+	}
+	id, err := s.accountID(account)
+	if err != nil {
+		return nil, err
+	}
+	rows, err := s.db.Query(
+		fmt.Sprintf("SELECT address FROM %s WHERE account_id=? ORDER BY address", tbl), id)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []string{}
+	for rows.Next() {
+		var a string
+		if err := rows.Scan(&a); err != nil {
+			return nil, err
+		}
+		out = append(out, a)
+	}
+	return out, rows.Err()
+}