const UNAVAILABLE_DEPARTMENT_SCOPE_ID = '__department_dashboard_scope_unavailable__'

function normalizeDepartmentPath(value: unknown) {
  return String(value ?? '')
    .split('/')
    .map((part) => part.trim())
    .filter(Boolean)
    .join('/')
}

/**
 * 部门看板只按登录人的明确部门路径取数。
 *
 * 不使用部门名称兜底，避免不同组织下的同名部门被合并；没有可靠路径时返回一个
 * 不可能命中的员工 ID，使指标安全地显示为空，而不是扩大到个人可见或全公司范围。
 */
export function buildDepartmentDashboardEmployeeWhere(scopeDepartmentPath: unknown) {
  const departmentPath = normalizeDepartmentPath(scopeDepartmentPath)
  if (!departmentPath) return { id: UNAVAILABLE_DEPARTMENT_SCOPE_ID }

  return {
    OR: [
      { departmentPath },
      { departmentPath: { startsWith: `${departmentPath}/` } },
      {
        departmentMemberships: {
          some: {
            OR: [
              { departmentPath },
              { departmentPath: { startsWith: `${departmentPath}/` } },
            ],
          },
        },
      },
    ],
  }
}