import {z} from 'zod'

export type GetApiV1EndpointsOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const volumeExperimental = z.object({name: z.string(), path: z.string(), mount: z.string()});

export const replica = z.object({account_key: z.string(), endpoint_name: z.string(), replica_id: z.string(), status: z.enum(["pending", "running", "succeeded", "failed", "unknown"]), restarts: z.number().int().gte(0), age: z.number().int()});

export const endpointResponse = z.object({name: z.string(), display_name: z.string().optional(), description: z.string().optional(), image_url: z.string(), port: z.number().int(), health_check_path: z.string().optional(), auto_volume_experimental: z.boolean().optional(), volumes_experimental: z.array(volumeExperimental).optional(), min_replicas: z.number().int().gte(0).lte(999).optional(), max_replicas: z.number().int().gte(0).lte(999).optional(), scale_to_zero: z.number().int().gte(0).lte(3600).optional(), registry_credential: z.string().optional(), visibility: z.enum(["private", "public"]).optional(), endpoint_state: z.enum(["active", "disabled"]).optional(), env_overrides: z.record(z.string(), z.unknown()).optional(), instance_type: z.string().optional(), container_secrets: z.array(z.string()).optional(), concurrency_per_replica: z.number().int().gte(1).lte(500).optional(), endpoint: z.string().optional(), replicas: z.array(replica)});

export const getApiV1EndpointsResponse = z.array(endpointResponse);

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
};

/**
 * Return list of endpoints
 * 
 * GET /v1/endpoints
 */
export const getApiV1Endpoints = async (options?: GetApiV1EndpointsOptions) => {
const {baseUrl = "https://api.octoai.cloud", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/endpoints${query.size > 0 ? `?${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(getApiV1EndpointsResponse, await res.json())
};