import {z} from 'zod'

export type ChatCompletionRequestLLMArgs = {[key: string]: unknown};

export type GuardrailsSettings = {exception_message?: string | undefined, show_violated_responses?: boolean | undefined, guardrails_on_transcriptions?: boolean | undefined, vision_guardrails_enabled?: boolean | undefined, guardrails_vision_llm?: string | undefined, column_redaction_config?: Array<Array<string>> | undefined, disallowed_regex_patterns?: Array<string> | undefined, presidio_labels_to_flag?: Array<string> | undefined, pii_labels_to_flag?: Array<string> | undefined, pii_detection_parse_action?: ('allow' | 'redact' | 'fail') | undefined, pii_detection_llm_input_action?: ('allow' | 'redact' | 'fail') | undefined, pii_detection_llm_output_action?: ('allow' | 'redact' | 'fail') | undefined, prompt_guard_labels_to_flag?: Array<string> | undefined, guardrails_labels_to_flag?: Array<string> | undefined, guardrails_llm?: string | undefined, guardrails_safe_category?: string | undefined, guardrails_entities?: {[key: string]: string} | undefined, column_redaction_custom_entities_to_flag?: Array<string> | undefined, column_redaction_custom_entities?: {[key: string]: string} | undefined, custom_pii_entities_to_flag?: Array<string> | undefined, custom_pii_entities?: {[key: string]: string} | undefined};

export type ProcessDocumentJobRequest = {document_id: string, summary_id?: string | undefined, system_prompt?: string | undefined, pre_prompt_summary?: string | undefined, prompt_summary?: string | undefined, image_batch_image_prompt?: string | undefined, image_batch_final_prompt?: string | undefined, llm?: string | undefined, llm_args?: ChatCompletionRequestLLMArgs | undefined, max_num_chunks?: number | undefined, sampling_strategy?: ('auto' | 'uniform' | 'first' | 'first+last') | undefined, pages?: Array<number> | undefined, schema?: Record<string, never> | undefined, keep_intermediate_results?: boolean | undefined, guardrails_settings?: GuardrailsSettings | undefined, timeout?: number | undefined, meta_data_to_include?: {[key: string]: boolean} | undefined};

export type CreateApiDocumentsProcessJobArgs = {body: ProcessDocumentJobRequest};

export type CreateApiDocumentsProcessJobOptions = {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 job to process document.
 * 
 * POST /documents/process_job
 */
export const createApiDocumentsProcessJob = async (args: CreateApiDocumentsProcessJobArgs, options?: CreateApiDocumentsProcessJobOptions) => {
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 (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/documents/process_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())
};