import {z} from 'zod'

export type CreateApiSyncDeltaArgs = {body: {file_type?: string | undefined, limit?: number | undefined, utime?: number | undefined}};

export type CreateApiSyncDeltaOptions = {baseUrl: string, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const schemaFileType = z.union([z.literal(0), z.literal(1), z.literal(2), z.literal(3), z.literal(4), z.literal(5), z.literal(6), z.literal(7)]);

export const schemaBook = z.object({asin: z.string().optional(), author: z.string().optional(), author_sort: z.string().optional(), author_url: z.string().optional(), category: z.string().optional(), count_download: z.number().int().optional(), count_visit: z.number().int().optional(), cover_url: z.string().optional(), ctime: z.number().int().optional(), description: z.string().optional(), file_type: schemaFileType.optional(), id: z.string().optional(), identifier: z.string().optional(), isbn: z.string().optional(), language: z.string().optional(), pubdate: z.string().optional(), publisher: z.string().optional(), publisher_url: z.string().optional(), rating: z.number().optional(), series: z.string().optional(), seriesIndex: z.string().optional(), size: z.number().int().optional(), sub_title: z.string().optional(), tags: z.array(z.string()).optional(), title: z.string().optional(), utime: z.number().int().optional(), uuid: z.string().optional()});

export const createApiSyncDeltaResponse = z.object({books: z.array(schemaBook).optional()});

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
};

/**
 * Delta data sync
 * 
 * POST /sync/delta
 */
export const createApiSyncDelta = async (args: CreateApiSyncDeltaArgs, options: CreateApiSyncDeltaOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (BearerAuth !== undefined) headers.set("Authorization", BearerAuth)

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

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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