nextjs-notion-starter-kit/lib/notion.ts

import { NotionAPI } from 'notion-client'
import { ExtendedRecordMap } from 'notion-types'
import { getPreviewImages } from './get-preview-images'
import { mapNotionImageUrl } from './map-image-url'

const notion = new NotionAPI({
  apiBaseUrl: process.env.NOTION_API_BASE_URL
})

export default notion

export async function getPage(pageId: string): Promise<ExtendedRecordMap> {
  const recordMap = await notion.getPage(pageId)
  const blockIds = Object.keys(recordMap.block)

  const imageUrls: string[] = blockIds
    .map((blockId) => {
      const block = recordMap.block[blockId]?.value

      if (block) {
        if (block.type === 'image') {
          const source = block.properties?.source?.[0]?.[0]

          if (source) {
            return {
              block,
              url: source
            }
          }
        }

        if ((block.format as any)?.page_cover) {
          const source = (block.format as any).page_cover

          return {
            block,
            url: source
          }
        }
      }
    })
    .filter(Boolean)
    .map(({ block, url }) => mapNotionImageUrl(url, block))
    .filter(Boolean)

  const urls = Array.from(new Set(imageUrls))
  const previewImageMap = await getPreviewImages(urls)
  ;(recordMap as any).preview_images = previewImageMap

  return recordMap
}

// export const getSearch = pMemoize(getSearchImpl, { maxAge: 20000 })

// async function getSearchImpl(
//   params: types.SearchParams
// ): Promise<types.NotionSearchResultsType | types.NotionError> {
//   const url = `${apiBaseUrl}/v1/search?${new URLSearchParams(
//     params as any
//   ).toString()}`

//   return fetch(url).then((res) => res.json())
// }