package radar

import (
	"context"

	"apps/backend/internal/middleware"
	"apps/backend/internal/response"
)

/*
ownerUID 取登入 uid，是 radar 全部資源的隔離依據。

request 若帶了 uid 一律忽略：整個 group 只讀寫自己的資料（spec §5.1、§7），
少了這道就等於開放任意越權讀寫。
*/
func ownerUID(ctx context.Context) (int64, error) {
	uid, ok := middleware.UIDFrom(ctx)
	if !ok || uid <= 0 {
		return 0, response.Biz(401, 401001, "missing authorization")
	}
	return uid, nil
}