import {z} from 'zod'

export type BatchRequest = {custom_id?: (string | null) | undefined, body: {[key: string]: unknown}};

export type ApiEndpoint = '/v1/chat/completions' | '/v1/embeddings' | '/v1/fim/completions' | '/v1/moderations' | '/v1/chat/moderations' | '/v1/ocr' | '/v1/classifications' | '/v1/chat/classifications' | '/v1/conversations' | '/v1/audio/transcriptions';

export type CreateBatchJobRequest = {input_files?: (Array<string> | null) | undefined, requests?: (Array<BatchRequest> | null) | undefined, endpoint: ApiEndpoint, model?: (string | null) | undefined, agent_id?: (string | null) | undefined, metadata?: ({[key: string]: string} | null) | undefined, timeout_hours?: number | undefined};

export type CreateApiV1BatchJobsArgs = {body: CreateBatchJobRequest};

export type CreateApiV1BatchJobsOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const batchError = z.object({message: z.string(), count: z.number().int().optional()});

export const batchJobStatus = z.enum(["QUEUED", "RUNNING", "SUCCESS", "FAILED", "TIMEOUT_EXCEEDED", "CANCELLATION_REQUESTED", "CANCELLED"]);

export const batchJob = z.object({id: z.string(), object: z.literal("batch").optional(), input_files: z.array(z.string()), metadata: z.record(z.string(), z.unknown()).nullable().optional(), endpoint: z.string(), model: z.string().nullable().optional(), agent_id: z.string().nullable().optional(), output_file: z.string().nullable().optional(), error_file: z.string().nullable().optional(), errors: z.array(batchError), outputs: z.array(z.record(z.string(), z.unknown())).nullable().optional(), status: batchJobStatus, created_at: z.number().int(), total_requests: z.number().int(), completed_requests: z.number().int(), succeeded_requests: z.number().int(), failed_requests: z.number().int(), started_at: z.number().int().nullable().optional(), completed_at: z.number().int().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
};

/**
 * Create Batch Job
 * 
 * POST /v1/batch/jobs
 */
export const createApiV1BatchJobs = async (args: CreateApiV1BatchJobsArgs, options?: CreateApiV1BatchJobsOptions) => {
const {baseUrl = "https://api.mistral.ai", 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('authorization', `Bearer ${ApiKey}`)

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