import {z} from 'zod'

export type BoardPrivacyFilter = 'ALL' | 'PUBLIC' | 'PROTECTED' | 'SECRET' | 'PUBLIC_AND_SECRET';

export type GetApiBoardsArgs = {ad_account_id?: string | undefined, privacy?: BoardPrivacyFilter | undefined, bookmark?: string | undefined, page_size?: number | undefined};

export type GetApiBoardsOptions = {baseUrl?: string | undefined, pinterestOauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const boardMedia = z.object({image_cover_url: z.string().nullable().optional(), pin_thumbnail_urls: z.array(z.string()).optional()});

export const boardOwner = z.object({username: z.string().optional()});

export const board = z.object({board_pins_modified_at: z.string().optional(), collaborator_count: z.number().int().gte(0).optional(), created_at: z.string().optional(), description: z.string().nullable().optional(), follower_count: z.number().int().gte(0).optional(), id: z.string(), is_ads_only: z.boolean().optional(), media: boardMedia.optional(), name: z.string(), owner: boardOwner.optional(), pin_count: z.number().int().gte(0).optional()});

export const getApiBoardsResponse = z.object({bookmark: z.string().nullable().optional(), items: z.array(board)});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * List boards
 * 
 * GET /boards
 * 
 * Also accepts auth: client_credentials
 */
export const getApiBoards = async (args: GetApiBoardsArgs, options?: GetApiBoardsOptions) => {
const {baseUrl = "https://api.pinterest.com/v5", fetch: fetchFn = fetch, pinterestOauth2} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.ad_account_id != null) query.append("ad_account_id", String(args.ad_account_id))
if (args.privacy != null) query.append("privacy", String(args.privacy))
if (args.bookmark != null) query.append("bookmark", String(args.bookmark))
if (args.page_size != null) query.append("page_size", String(args.page_size))
if (pinterestOauth2 !== undefined) headers.set('authorization', `Bearer ${pinterestOauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/boards${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getApiBoardsResponse, await res.json())
};