export interface PointAccount {
  id: string;
  memberNo: string;
  loginId: string;
  studentName: string;
  schoolName: string;
  grade: number;
  classNo: number;
  studentNo: number;
  totalPoint: number;
  deductedPoint: number;
  usedPoint: number;
  currentPoint: number;
  updatedAt: string;
  siteName: string;
}

export interface PointHistoryEntry {
  id: string;
  title: string;
  point: number;
  siteName: string;
  date: string;
}

export const EMPTY_FIELD_PLACEHOLDER = '-';

export function formatOptionalValue(
  value: string | number | null | undefined
): string {
  return value === null || value === undefined || value === ''
    ? EMPTY_FIELD_PLACEHOLDER
    : String(value);
}

export function formatPoint(value: number): string {
  return value.toLocaleString('ko-KR');
}

/** 취득은 `+`, 사용은 `-`를 붙여 부호가 곧 방향이 되게 한다(기획 PTS10300001 ②). */
export function formatPointDelta(value: number): string {
  const sign = value > 0 ? '+' : '';
  return `${sign}${formatPoint(value)} P`;
}

export function isPointEarned(value: number): boolean {
  return value > 0;
}

export function formatGradeClassNumber(account: PointAccount): string {
  return `${account.grade}학년 ${account.classNo}반 ${account.studentNo}번`;
}