import {z} from 'zod'

export type CreateApiV1WebScrapeArgs = {body: {url: string, engine?: ('auto' | 'browser') | undefined, format?: ('html' | 'markdown' | 'text') | undefined, render_js?: boolean | undefined, wait_for?: string | undefined, wait_timeout?: number | undefined, wait_after_load?: number | undefined, js_scenario?: Array<Record<string, never>> | undefined, session_id?: string | undefined, retry_count?: number | undefined, retry_on_block?: boolean | undefined, country?: string | undefined, custom_headers?: Record<string, never> | undefined, screenshot?: boolean | undefined, video?: boolean | undefined, anti_bot?: boolean | undefined, escalate?: boolean | undefined, max_cost?: number | undefined, ai_extract?: boolean | undefined, ai_prompt?: string | undefined}};

export type CreateApiV1WebScrapeOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiV1WebScrapeResponse = z.object({success: z.boolean().optional(), url: z.string().optional(), status_code: z.number().int().optional(), content: z.string().optional(), format: z.string().optional(), engine_used: z.string().optional(), credits_used: z.number().int().optional(), duration_ms: z.number().int().optional(), retries_used: z.number().int().optional(), content_length: z.number().int().optional(), screenshot_url: z.string().nullable().optional(), video_url: z.string().nullable().optional(), headers: z.object({}).optional(), blocking_detected: z.boolean().optional(), blocking_details: z.object({}).nullable().optional(), antibot_systems: z.array(z.unknown()).optional(), captcha_systems: z.array(z.unknown()).optional(), anti_bot_solved: z.boolean().optional(), solver_used: z.string().nullable().optional(), ai_extraction: z.unknown(), ai_model: z.string().nullable().optional(), ai_error: z.string().nullable().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
};

/**
 * Scrape URL
 * 
 * POST /v1/web/scrape
 */
export const createApiV1WebScrape = async (args: CreateApiV1WebScrapeArgs, options?: CreateApiV1WebScrapeOptions) => {
const {baseUrl = "https://scrapebadger.com", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (apiKey !== undefined) headers.set("x-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/web/scrape${query.size > 0 ? `?${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(createApiV1WebScrapeResponse, await res.json())
};