import {z} from 'zod'

export type InferenceEngineVersion = '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 type ModelRef = {name?: string | undefined, id?: string | undefined};

export type CreateDeploymentRequest = {'gpu-count': number, 'inference-engine-version'?: InferenceEngineVersion | undefined, name: string, 'gpu-type': string, 'product-name'?: string | undefined, replicas: number, 'inference-engine-parameters'?: Array<string> | undefined, model: ModelRef};

export type CreateApiAiDeploymentArgs = {body: CreateDeploymentRequest};

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

export const operation = z.object({id: z.string().optional(), reason: z.enum(["incorrect", "unknown", "unavailable", "forbidden", "busy", "fault", "partial", "not-found", "interrupted", "unsupported", "conflict"]).optional(), reference: z.object({id: z.string().optional(), link: z.string().optional(), command: z.string().optional()}).optional(), message: z.string().optional(), state: z.enum(["failure", "pending", "success", "timeout"]).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 Deployment
 * 
 * POST /ai/deployment
 */
export const createApiAiDeployment = async (args: CreateApiAiDeploymentArgs, options?: CreateApiAiDeploymentOptions) => {
const {baseUrl = "https://api-ch-gva-2.exoscale.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/ai/deployment${query.size > 0 ? `?${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(operation, await res.json())
};