import {z} from 'zod'

export type LibraryListingSourceV1 = {kind?: 'library_listing' | undefined, lab_display_name: string, user_defined_listing_id: string, deployed_model_name?: (string | null) | undefined};

export type DeploymentArchivePayloadV1 = {config: {[key: string]: unknown}, raw_config?: (string | null) | undefined, user_env?: ({[key: string]: unknown} | null) | undefined, environment_name?: (string | null) | undefined, preserve_env_instance_type?: boolean | undefined, deploy_timeout_minutes?: (number | null) | undefined, deployment_name?: (string | null) | undefined, labels?: ({[key: string]: unknown} | null) | undefined, is_development?: boolean | undefined};

export type ModelArchiveSourceV1 = {kind?: 'model_archive' | undefined, name: string, deployment: DeploymentArchivePayloadV1, s3_key?: (string | null) | undefined, disable_archive_download?: boolean | undefined};

export type CreateModelRequestV1 = {source: LibraryListingSourceV1 | ModelArchiveSourceV1};

export type CreateApiV1ModelsArgs = {body: CreateModelRequestV1};

export type CreateApiV1ModelsOptions = {baseUrl: string, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const modelV1 = z.object({id: z.string(), created_at: z.string(), name: z.string(), deployments_count: z.number().int(), production_deployment_id: z.string().nullable(), development_deployment_id: z.string().nullable(), instance_type_name: z.string(), team_name: z.string()});

export const deploymentStatusV1 = z.enum(["BUILDING", "DEPLOYING", "DEPLOY_FAILED", "LOADING_MODEL", "ACTIVE", "UNHEALTHY", "BUILD_FAILED", "BUILD_STOPPED", "DEACTIVATING", "INACTIVE", "FAILED", "UPDATING", "SCALED_TO_ZERO", "WAKING_UP"]);

export const autoscalingSettingsV1 = z.object({min_replica: z.number().int(), max_replica: z.number().int(), autoscaling_window: z.number().int().nullable(), scale_down_delay: z.number().int().nullable(), concurrency_target: z.number().int(), target_utilization_percentage: z.number().int().nullable(), target_in_flight_tokens: z.number().int().nullable().optional(), max_scale_down_rate: z.number().int().nullable().optional()});

export const deploymentV1 = z.object({id: z.string(), created_at: z.string(), name: z.string(), model_id: z.string(), is_production: z.boolean(), is_development: z.boolean(), status: deploymentStatusV1, active_replica_count: z.number().int(), autoscaling_settings: autoscalingSettingsV1.nullable(), instance_type_name: z.string().nullable(), environment: z.string().nullable(), labels: z.record(z.string(), z.unknown()).nullable().optional()});

export const createdModelDeploymentV1 = z.object({model: modelV1, deployment: deploymentV1});

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 new model from a source
 * 
 * POST /v1/models
 */
export const createApiV1Models = async (args: CreateApiV1ModelsArgs, options: CreateApiV1ModelsOptions) => {
const {baseUrl, 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 = `${baseUrl.replace(/\/+$/, '')}/v1/models${query.size > 0 ? `?${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(createdModelDeploymentV1, await res.json())
};