import {z} from 'zod'

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

export const clusterInstanceGpuInfo = z.object({count: z.number().int().optional(), name: z.string().optional(), manufacturer: z.string().optional(), memory_in_mib: z.string().optional()});

export const clusterInstanceAttributes = z.object({instance_category: z.string().optional(), instance_generation: z.number().int().optional(), instance_family: z.string().optional(), instance_size: z.string().optional(), meets_resource_reqs: z.boolean().optional()});

export const clusterInstanceTypeResponseList = z.object({results: z.array(z.object({type: z.string(), name: z.string(), cpu: z.number().int(), ram_in_gb: z.number().int(), bandwidth_in_gbps: z.string(), bandwidth_guarantee: z.string(), architecture: z.string().optional(), gpu_info: clusterInstanceGpuInfo.optional(), attributes: clusterInstanceAttributes.optional()})).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
};

/**
 * List Scaleway available instance types
 * 
 * GET /scaleway/instanceType
 * 
 * Also accepts auth: bearerAuth
 */
export const getApiScalewayInstanceType = async (options?: GetApiScalewayInstanceTypeOptions) => {
const {baseUrl = "https://api.qovery.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

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