import {z} from 'zod'

export type GetApiAiDeploymentIdArgs = {id: string};

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

export const inferenceEngineVersion = z.enum(["0.12.0", "0.15.1", "0.16.0", "0.17.0", "0.18.0", "0.18.1", "0.19.0", "0.19.1", "0.20.0", "0.20.1", "0.20.2", "0.21.0", "0.22.0", "0.22.1", "0.23.0", "0.24.0", "0.25.0", "0.25.1", "0.26.0"]);

export const modelRef = z.object({name: z.string().min(1).optional(), id: z.string().optional()});

export const getDeploymentResponse = z.object({"gpu-count": z.number().int().gte(1).optional(), "updated-at": z.string().optional(), "deployment-url": z.string(), "service-level": z.string().min(1).optional(), "inference-engine-version": inferenceEngineVersion.optional(), name: z.string().min(1), state: z.enum(["ready", "creating", "preparing", "error", "deploying", "scaling", "updating"]), "gpu-type": z.string().min(1).optional(), id: z.string().optional(), replicas: z.number().int().gte(0).optional(), "state-details": z.string().optional(), "created-at": z.string().optional(), visibility: z.enum(["public", "private"]), "inference-engine-parameters": z.array(z.string()).optional(), model: modelRef});

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
};

/**
 * Get Deployment
 * 
 * GET /ai/deployment/{id}
 */
export const getApiAiDeploymentId = async (args: GetApiAiDeploymentIdArgs, options?: GetApiAiDeploymentIdOptions) => {
const {baseUrl = "https://api-ch-gva-2.exoscale.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/ai/deployment/${encodeURIComponent(String(args.id))}${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(getDeploymentResponse, await res.json())
};