import {z} from 'zod'

export type WebSearchLocation = {country: string, state?: string | undefined, city?: string | undefined};

export type WebSearchFiletype = 'pdf' | 'doc' | 'docx' | 'xls' | 'xlsx' | 'ppt' | 'pptx' | 'html';

export type WebSearchFilters = {exactPhrase?: boolean | undefined, semanticPhrase?: boolean | undefined, excludeTerms?: Array<string> | undefined, boostTerms?: Array<string> | undefined, filetype?: WebSearchFiletype | undefined, site?: string | undefined, excludeSite?: string | undefined, intitle?: string | undefined, inurl?: string | undefined};

export type WebSearchParams = {query: string, page?: number | undefined, maxAgeSeconds?: number | undefined, location?: WebSearchLocation | undefined, filters?: WebSearchFilters | undefined};

export type CreateApiX402WebSearchArgs = {'PAYMENT-SIGNATURE'?: string | undefined, body: WebSearchParams};

export type CreateApiX402WebSearchOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const webSearchStatus = z.enum(["completed", "failed", "pending", "running", "stopped"]);

export const webSearchResultItem = z.object({title: z.string(), url: z.string(), description: z.string()});

export const webSearchResponseData = z.object({query: z.string(), results: z.array(webSearchResultItem)});

export const webSearchResponse = z.object({jobId: z.string(), status: webSearchStatus, error: z.string().nullable().optional(), data: webSearchResponseData.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
};

/**
 * Search the web with X402 payment
 * 
 * POST /x402/web/search
 */
export const createApiX402WebSearch = async (args: CreateApiX402WebSearchArgs, options?: CreateApiX402WebSearchOptions) => {
const {baseUrl = "https://api.hyperbrowser.ai", fetch: fetchFn = fetch} = options ?? {}

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

if (args['PAYMENT-SIGNATURE'] != null) headers.set("PAYMENT-SIGNATURE", String(args['PAYMENT-SIGNATURE']))

const url = `${baseUrl.replace(/\/+$/, '')}/x402/web/search${query.size > 0 ? `?${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(webSearchResponse, await res.json())
};