import {z} from 'zod'

export type GCSCredentials = {service_account_json_key: string};

export type IngestFromGcsBody = {urls: Array<string>, credentials?: GCSCredentials | undefined, metadata?: Record<string, never> | undefined};

export type CreateApiIngestGcsJobArgs = {collection_id: string, gen_doc_summaries?: boolean | undefined, gen_doc_questions?: boolean | undefined, audio_input_language?: string | undefined, ocr_model?: string | undefined, tesseract_lang?: string | undefined, keep_tables_as_one_chunk?: boolean | undefined, chunk_by_page?: boolean | undefined, handwriting_check?: boolean | undefined, ingest_mode?: ('standard' | 'agent_only') | undefined, timeout?: number | undefined, body: IngestFromGcsBody};

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

export const jobDetailsStatus = z.object({id: z.string(), status: z.string()});

export const jobDetails = z.object({id: z.string(), name: z.string(), overall_status: z.enum(["in progress", "completed", "failed", "canceled"]), status: z.string().optional(), passed_percentage: z.number(), failed_percentage: z.number(), progress: z.number(), created_at: z.string(), updated_at: z.string(), kind: z.string(), statuses: z.array(jobDetailsStatus), errors: z.array(z.string()), duration: z.string(), duration_seconds: z.number(), canceled_by: z.string().optional(), cancel_reason: z.string().optional(), timeout: z.number().optional(), start_time: z.number().optional(), files_total: z.number().int().optional(), files_failed: z.number().int().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
};

/**
 * Creates a job to add files from the Google Cloud Storage into a collection.
 * 
 * POST /ingest/gcs/job
 */
export const createApiIngestGcsJob = async (args: CreateApiIngestGcsJobArgs, options?: CreateApiIngestGcsJobOptions) => {
const {baseUrl = "https://h2ogpte.genai.h2o.ai/api/v1", 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 (args.collection_id != null) query.append("collection_id", String(args.collection_id))
if (args.gen_doc_summaries != null) query.append("gen_doc_summaries", String(args.gen_doc_summaries))
if (args.gen_doc_questions != null) query.append("gen_doc_questions", String(args.gen_doc_questions))
if (args.audio_input_language != null) query.append("audio_input_language", String(args.audio_input_language))
if (args.ocr_model != null) query.append("ocr_model", String(args.ocr_model))
if (args.tesseract_lang != null) query.append("tesseract_lang", String(args.tesseract_lang))
if (args.keep_tables_as_one_chunk != null) query.append("keep_tables_as_one_chunk", String(args.keep_tables_as_one_chunk))
if (args.chunk_by_page != null) query.append("chunk_by_page", String(args.chunk_by_page))
if (args.handwriting_check != null) query.append("handwriting_check", String(args.handwriting_check))
if (args.ingest_mode != null) query.append("ingest_mode", String(args.ingest_mode))
if (args.timeout != null) query.append("timeout", String(args.timeout))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/ingest/gcs/job${query.size > 0 ? `?${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(jobDetails, await res.json())
};