import {z} from 'zod'

export type CreateApiRdLlmV1DocumentsLayoutParsingArgs = {body: BodyInit};

export type CreateApiRdLlmV1DocumentsLayoutParsingOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const l017DocumentsLayoutParsingLayoutResultItem = z.object({url: z.string().optional(), bbox: z.array(z.unknown()), page: z.number().int(), type: z.string(), content: z.string().optional()});

export const l017DocumentsLayoutParsingLayoutParseResponse = z.object({state: z.string(), results: z.array(l017DocumentsLayoutParsingLayoutResultItem), file_type: z.string(), total_pages: z.number().int()});

export const l017DocumentsLayoutParsingResponse = z.object({data: l017DocumentsLayoutParsingLayoutParseResponse, status: z.string(), error_msg: z.string(), error_code: z.number().int()});

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
};

/**
 * L017 Layout-only Parsing (No OCR)
 * 
 * POST /rd-llm/v1/documents/layout_parsing
 */
export const createApiRdLlmV1DocumentsLayoutParsing = async (args: CreateApiRdLlmV1DocumentsLayoutParsingArgs, options?: CreateApiRdLlmV1DocumentsLayoutParsingOptions) => {
const {baseUrl = "https://connect.patsnap.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/rd-llm/v1/documents/layout_parsing${query.size > 0 ? `?${query}` : ''}`

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

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

return validateResponse(l017DocumentsLayoutParsingResponse, await res.json())
};