import {z} from 'zod'

export type ClaimWorkRequest = {service_versions?: ({[key: string]: string} | null) | undefined, cpu_pct?: (number | null) | undefined, ram_pct?: (number | null) | undefined, disk_pct?: (number | null) | undefined, docker_container_count?: (number | null) | undefined, runtime_contract?: (number | null) | undefined};

export type CreateApiV1ValidatorWorkClaimArgs = {body: ClaimWorkRequest | null};

export type CreateApiV1ValidatorWorkClaimOptions = {baseUrl: string, SessionBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const inferenceTokenGrant = z.object({provider: z.enum(["chutes", "openrouter"]), access_token: z.string(), base_url: z.string(), expires_at: z.string()});

export const claimWorkResponse = z.object({eval_run_id: z.string(), agent_version_id: z.string(), suite_id: z.number().int(), lease_expires_at: z.string(), code_download_url: z.string(), env_pack_sha256: z.string().nullable().optional(), race_id: z.string().nullable().optional(), delivery_id: z.string().nullable().optional(), episode_nonces: z.record(z.string(), z.string()).nullable().optional(), inference_token: inferenceTokenGrant.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
};

/**
 * Claim evaluation work
 * 
 * POST /v1/validator/work/claim
 * 
 * Also accepts auth: X-Hotkey + X-Timestamp + X-Nonce + X-Signature
 */
export const createApiV1ValidatorWorkClaim = async (args: CreateApiV1ValidatorWorkClaimArgs, options: CreateApiV1ValidatorWorkClaimOptions) => {
const {baseUrl, fetch: fetchFn = fetch, SessionBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/validator/work/claim${query.size > 0 ? `?${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(claimWorkResponse, await res.json())
};