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/**
* 학생 회원 목록의 검색·정렬·페이징 조건 — 순수 규칙(허용 값·기본값·URL 직렬화)만 담는다.
* next/react 의존이 없다(`URLSearchParams`는 서버·브라우저 양쪽에서 쓸 수 있는 표준 Web API).
*
* `app/(protected)/(basic)/students/page.tsx`가 `searchParams`를 `parseStudentMemberQuery`로
* 정규화하는 지점이자 단일 진실원천이며, 검색바·툴바·페이지네이션은 모두 `buildStudentMemberHref`로
* 같은 규칙에 따라 URL을 만들어 파라미터 이름·기본값이 여러 파일에 흩어져 드리프트하는 것을 막는다.
*/
/** 라우트 경로 — 이 파일 안에서만 하드코딩하고 나머지는 이 상수를 참조한다. */
export const STUDENT_MEMBERS_PATH = '/students';
export type StudentMemberSearchField =
| 'name'
| 'loginId'
| 'phoneNumber'
| 'schoolName'
| 'memberCode';
export const STUDENT_MEMBER_SEARCH_FIELD_OPTIONS: ReadonlyArray<{
value: StudentMemberSearchField;
label: string;
}> = [
{ value: 'name', label: '회원명' },
{ value: 'loginId', label: 'ID' },
{ value: 'phoneNumber', label: '휴대전화번호' },
{ value: 'schoolName', label: '학교명' },
{ value: 'memberCode', label: '회원코드' },
];
export type StudentMemberSortOption = 'joinedAt' | 'name';
export const STUDENT_MEMBER_SORT_OPTIONS: ReadonlyArray<{
value: StudentMemberSortOption;
label: string;
}> = [
{ value: 'joinedAt', label: '가입일순' },
{ value: 'name', label: '이름순' },
];
export const STUDENT_MEMBER_PAGE_SIZE_OPTIONS = [10, 30, 50] as const;
export type StudentMemberPageSize =
(typeof STUDENT_MEMBER_PAGE_SIZE_OPTIONS)[number];
export const DEFAULT_STUDENT_MEMBER_SEARCH_FIELD: StudentMemberSearchField =
'name';
export const DEFAULT_STUDENT_MEMBER_SORT: StudentMemberSortOption = 'joinedAt';
export const DEFAULT_STUDENT_MEMBER_PAGE_SIZE: StudentMemberPageSize = 10;
const DEFAULT_PAGE = 1;
const MAX_KEYWORD_LENGTH = 100;
export type StudentMemberQuery = {
searchField: StudentMemberSearchField;
keyword: string;
sort: StudentMemberSortOption;
page: number;
pageSize: StudentMemberPageSize;
};
/** Next.js `page.tsx`의 `searchParams`가 리졸브하는 값 형태를 그대로 옮긴 구조 타입 —
* next 패키지를 import하지 않고도 같은 shape을 표현해 domain 계층의 무의존 규칙을 지킨다. */
type RawSearchParams = Record<string, string | string[] | undefined>;
function readParam(params: RawSearchParams, key: string): string | undefined {
const value = params[key];
return Array.isArray(value) ? value[0] : value;
}
function isStudentMemberSearchField(
value: string | undefined
): value is StudentMemberSearchField {
return (
value !== undefined &&
STUDENT_MEMBER_SEARCH_FIELD_OPTIONS.some((option) => option.value === value)
);
}
function isStudentMemberSortOption(
value: string | undefined
): value is StudentMemberSortOption {
return (
value !== undefined &&
STUDENT_MEMBER_SORT_OPTIONS.some((option) => option.value === value)
);
}
function isStudentMemberPageSize(
value: number
): value is StudentMemberPageSize {
return (STUDENT_MEMBER_PAGE_SIZE_OPTIONS as readonly number[]).includes(
value
);
}
/**
* URL의 searchParams를 검증된 `StudentMemberQuery`로 정규화한다. 값이 없거나 허용 목록을
* 벗어나면 기본값으로 fallback한다 — searchParams는 사용자가 임의로 조작 가능한 값이라
* 신뢰하지 않는다.
*/
export function parseStudentMemberQuery(
searchParams: RawSearchParams
): StudentMemberQuery {
const searchFieldRaw = readParam(searchParams, 'searchField');
const sortRaw = readParam(searchParams, 'sort');
const keywordRaw = readParam(searchParams, 'keyword');
const pageRaw = Number(readParam(searchParams, 'page'));
const pageSizeRaw = Number(readParam(searchParams, 'pageSize'));
return {
searchField: isStudentMemberSearchField(searchFieldRaw)
? searchFieldRaw
: DEFAULT_STUDENT_MEMBER_SEARCH_FIELD,
keyword: (keywordRaw ?? '').trim().slice(0, MAX_KEYWORD_LENGTH),
sort: isStudentMemberSortOption(sortRaw)
? sortRaw
: DEFAULT_STUDENT_MEMBER_SORT,
page: Number.isInteger(pageRaw) && pageRaw > 0 ? pageRaw : DEFAULT_PAGE,
pageSize: isStudentMemberPageSize(pageSizeRaw)
? pageSizeRaw
: DEFAULT_STUDENT_MEMBER_PAGE_SIZE,
};
}
/**
* `StudentMemberQuery`(+ 부분 override)를 `/students` 링크로 직렬화한다. `parseStudentMemberQuery`의
* 역연산이며, 기본값과 같은 필드는 URL에서 생략해 링크를 짧게 유지한다.
*/
export function buildStudentMemberHref(
query: StudentMemberQuery,
overrides: Partial<StudentMemberQuery> = {}
): string {
const merged = { ...query, ...overrides };
const params = new URLSearchParams();
if (merged.searchField !== DEFAULT_STUDENT_MEMBER_SEARCH_FIELD) {
params.set('searchField', merged.searchField);
}
if (merged.keyword) {
params.set('keyword', merged.keyword);
}
if (merged.sort !== DEFAULT_STUDENT_MEMBER_SORT) {
params.set('sort', merged.sort);
}
if (merged.pageSize !== DEFAULT_STUDENT_MEMBER_PAGE_SIZE) {
params.set('pageSize', String(merged.pageSize));
}
if (merged.page !== DEFAULT_PAGE) {
params.set('page', String(merged.page));
}
const queryString = params.toString();
return queryString
? `${STUDENT_MEMBERS_PATH}?${queryString}`
: STUDENT_MEMBERS_PATH;
}