export type InitialDepositRemarkKind = 'daily' | 'opening_bonus' | 'custom';

export type InitialDepositOperator = 'admin' | 'agent';

export const OPENING_BONUS_REMARK = '开户初始余额';
export const ADMIN_DAILY_DEPOSIT_REMARK = '管理员上分';
export const AGENT_DAILY_DEPOSIT_REMARK = '代理上分';

export type InitialDepositRemarkValidationError =
  | 'INITIAL_DEPOSIT_REMARK_REQUIRED'
  | 'INITIAL_DEPOSIT_REMARK_CUSTOM_INVALID';

export function dailyDepositRemark(operator: InitialDepositOperator): string {
  return operator === 'admin' ? ADMIN_DAILY_DEPOSIT_REMARK : AGENT_DAILY_DEPOSIT_REMARK;
}

export function resolveInitialDepositRemark(
  kind: InitialDepositRemarkKind,
  custom: string | undefined,
  operator: InitialDepositOperator,
): string {
  if (kind === 'daily') return dailyDepositRemark(operator);
  if (kind === 'opening_bonus') return OPENING_BONUS_REMARK;
  const trimmed = custom?.trim() ?? '';
  if (trimmed.length < 2) {
    throw new Error('INITIAL_DEPOSIT_REMARK_CUSTOM_INVALID');
  }
  return trimmed;
}

export function validateInitialDepositRemark(
  initialDeposit: number,
  remark: string | undefined,
  operator: InitialDepositOperator,
): { ok: true; remark: string } | { ok: false; code: InitialDepositRemarkValidationError } {
  if (initialDeposit <= 0) {
    return { ok: true, remark: remark?.trim() ?? '' };
  }
  const r = remark?.trim();
  if (!r) return { ok: false, code: 'INITIAL_DEPOSIT_REMARK_REQUIRED' };
  const daily = dailyDepositRemark(operator);
  if (r === daily || r === OPENING_BONUS_REMARK) return { ok: true, remark: r };
  if (r.length < 2) return { ok: false, code: 'INITIAL_DEPOSIT_REMARK_CUSTOM_INVALID' };
  return { ok: true, remark: r };
}