import { createError, readBody } from 'h3'
import { requireAdminSession } from '../../../utils/admin-auth'
import { parseAdminNavigationInput } from '../../../utils/admin-navigation-input'
import { updateNavigationItems } from '../../../repositories/content-repository'
import { renumberSortOrderByTree, validateNavigationItems } from '../../../utils/navigation-tree'

/**
 * 관리자 네비게이션 일괄 저장 API
 * @param {import('h3').H3Event} event - 요청 이벤트
 * @returns {Promise<Array>} 저장된 네비게이션 항목 목록
 */
export default defineEventHandler(async (event) => {
  requireAdminSession(event)

  const parsedBody = parseAdminNavigationInput(await readBody(event))

  if (!parsedBody.success) {
    throw createError({
      statusCode: 400,
      message: '네비게이션 입력 형식이 올바르지 않습니다.'
    })
  }

  const items = parsedBody.data.items.map((row) => ({
    id: row.id,
    label: row.label.trim(),
    url: row.url.trim(),
    location: row.location,
    sortOrder: row.sortOrder,
    isVisible: row.isVisible,
    parentId: row.parentId ?? null,
    isFolder: Boolean(row.isFolder)
  }))

  const checked = validateNavigationItems(items)
  if (!checked.ok) {
    throw createError({
      statusCode: 400,
      message: checked.message
    })
  }

  renumberSortOrderByTree(items, 'primary')
  renumberSortOrderByTree(items, 'footer')

  return updateNavigationItems(items)
})