import {z} from 'zod'

export type DocDigitizationSupportedLanguage = 'hi-IN' | 'en-IN' | 'bn-IN' | 'gu-IN' | 'kn-IN' | 'ml-IN' | 'mr-IN' | 'od-IN' | 'pa-IN' | 'ta-IN' | 'te-IN' | 'ur-IN' | 'as-IN' | 'brx-IN' | 'doi-IN' | 'ks-IN' | 'kok-IN' | 'mai-IN' | 'mni-IN' | 'ne-IN' | 'sa-IN' | 'sat-IN' | 'sd-IN';

export type DocDigitizationOutputFormat = 'html' | 'md' | 'json';

export type DocDigitizationJobParameters = {language?: DocDigitizationSupportedLanguage | undefined, output_format?: DocDigitizationOutputFormat | undefined};

export type DocDigitizationWebhookCallback = {url: string, auth_token?: string | undefined};

export type DocDigitizationCreateJobRequest = {job_parameters?: DocDigitizationJobParameters | undefined, callback?: (DocDigitizationWebhookCallback | null) | undefined};

export type CreateApiDocDigitizationJobV1Args = {'api-subscription-key': string, body: DocDigitizationCreateJobRequest};

export type CreateApiDocDigitizationJobV1Options = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const storageContainerType = z.enum(["Azure", "Local", "Google", "Azure_V1"]);

export const docDigitizationSupportedLanguage = z.enum(["hi-IN", "en-IN", "bn-IN", "gu-IN", "kn-IN", "ml-IN", "mr-IN", "od-IN", "pa-IN", "ta-IN", "te-IN", "ur-IN", "as-IN", "brx-IN", "doi-IN", "ks-IN", "kok-IN", "mai-IN", "mni-IN", "ne-IN", "sa-IN", "sat-IN", "sd-IN"]);

export const docDigitizationOutputFormat = z.enum(["html", "md", "json"]);

export const docDigitizationJobParameters = z.object({language: docDigitizationSupportedLanguage.optional(), output_format: docDigitizationOutputFormat.optional()});

export const docDigitizationJobState = z.enum(["Accepted", "Pending", "Running", "Completed", "PartiallyCompleted", "Failed"]);

export const docDigitizationCreateJobResponse = z.object({job_id: z.string(), storage_container_type: storageContainerType, job_parameters: docDigitizationJobParameters, job_state: docDigitizationJobState});

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
};

/**
 * Create Document Intelligence Job
 * 
 * POST /doc-digitization/job/v1
 */
export const createApiDocDigitizationJobV1 = async (args: CreateApiDocDigitizationJobV1Args, options?: CreateApiDocDigitizationJobV1Options) => {
const {baseUrl = "https://api.sarvam.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['api-subscription-key'] != null) headers.set("api-subscription-key", String(args['api-subscription-key']))

const url = `${baseUrl.replace(/\/+$/, '')}/doc-digitization/job/v1${query.size > 0 ? `?${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(docDigitizationCreateJobResponse, await res.json())
};