import {z} from 'zod'

export type OperationType = 'yql' | 'materialize_history' | 'batch_inference' | 'finetuning' | 'file_to_dataset' | 'dataset_to_file' | 'merge';

export type GetApiV1OperationsArgs = {limit?: number | undefined, cursor_time?: (string | null) | undefined, ai_project_id?: (string | null) | undefined, type?: (OperationType | null) | undefined};

export type GetApiV1OperationsOptions = {baseUrl?: string | undefined, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const uUIDSchema = z.string();

export const instanceResourcesLimits = z.object({max_layer_bytes: z.number().int().gte(1).optional()});

export const instanceNetworking = z.object({enabled: z.boolean().optional()});

export const closableStreamRepr = z.object({value: z.string(), encoding: z.enum(["ascii", "base64"]).optional(), close: z.boolean().optional()});

export const streamRepr = z.object({value: z.string(), encoding: z.enum(["ascii", "base64"]), truncated: z.boolean().optional()});

export const instanceResult = z.object({resources: z.object({block_input: z.number().int().optional(), block_output: z.number().int().optional(), cost: z.number().optional(), elapsed_time: z.number().optional(), involuntary_switches: z.number().int().optional(), max_rss: z.number().int().optional(), monotonic_time: z.number().optional(), page_faults: z.number().int().optional(), page_faults_io: z.number().int().optional(), shared_memory: z.number().int().optional(), signals: z.number().int().optional(), swaps: z.number().int().optional(), system_cpu_time: z.number().optional(), unshared_memory: z.number().int().optional(), user_cpu_time: z.number().optional(), voluntary_switches: z.number().int().optional()}).optional(), state: z.object({continued: z.boolean().optional(), core_dump: z.boolean().optional(), exit_code: z.number().int().optional(), pid: z.number().int().optional(), signal: z.number().int().optional(), stopped: z.boolean().optional(), timed_out: z.boolean().optional()}).optional(), stdout: streamRepr.optional(), stderr: streamRepr.optional()});

export const operationInstanceMetadata = z.object({command: z.string(), disposable: z.boolean().optional(), hostname: z.string().optional(), image: z.union([z.string(), z.string()]), args: z.array(z.string()).optional(), shell: z.boolean().optional(), env: z.record(z.string(), z.string()).nullable().optional(), preserve_env: z.boolean().optional(), cwd: z.string().optional(), uid: z.number().int().gte(0).optional(), gid: z.number().int().gte(0).optional(), resources_limits: instanceResourcesLimits.optional(), networking: instanceNetworking.optional(), stdin: closableStreamRepr.optional(), timeout: z.number().int().optional(), truncate_output_at: z.number().int().optional(), files: z.record(z.string(), z.object({uuid: uUIDSchema.optional(), uid: z.number().int().optional(), gid: z.number().int().optional(), mode: z.string().optional()})).optional(), result: instanceResult.optional()});

export const imageImportMetadata = z.object({registry: z.object({url: z.string().optional(), credentials: z.object({username: z.string().optional(), password: z.string().optional()}).optional()}).optional(), tag: z.string().nullable().optional(), timeout: z.number().int().optional()});

export const operationMetadata = z.union([operationInstanceMetadata, imageImportMetadata]);

export const operationResponse = z.object({uuid: uUIDSchema.optional(), kind: z.enum(["image_import", "instance"]).optional(), status: z.enum(["PENDING", "ASSIGNED", "EXECUTING", "SUCCESS", "FAILED", "CANCELLED"]).optional(), error: z.string().nullable().optional(), created_at: z.string().optional(), duration: z.number().nullable().optional(), image_size: z.number().int().nullable().optional(), consumed_cpu: z.number().nullable().optional(), consumed_memory: z.number().int().nullable().optional(), image_uuid: uUIDSchema.nullable().optional(), result_image_uuid: uUIDSchema.nullable().optional(), metadata: operationMetadata.optional(), result: z.object({image: uUIDSchema.nullable().optional(), tag: z.string().nullable().optional()}).optional()});

export const operationsResponse = z.object({object: z.string().optional(), data: z.array(operationResponse)});

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
};

/**
 * Filter operations by attributes
 * 
 * GET /v1/operations
 */
export const getApiV1Operations = async (args: GetApiV1OperationsArgs, options?: GetApiV1OperationsOptions) => {
const {baseUrl = "https://api.tokenfactory.nebius.com", fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor_time != null) query.append("cursor_time", String(args.cursor_time))
if (args.ai_project_id != null) query.append("ai_project_id", String(args.ai_project_id))
if (args.type != null) query.append("type", String(args.type))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/operations${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(operationsResponse, await res.json())
};