import {z} from 'zod'

export type EnvVar = {key: string, value: string};

export type HealthCheckType = 'http' | 'tcp' | 'exec';

export type HealthCheck = {intervalSecs?: number | undefined, path?: (string | null) | undefined, port?: (number | null) | undefined, retries?: number | undefined, timeoutSecs?: number | undefined, type: HealthCheckType};

export type DeployStrategy = {batchSize?: number | undefined, type: 'rolling', useHealthCheck?: boolean | undefined, waitSeconds?: number | undefined} | {autoPromote?: boolean | undefined, canaryCount?: number | undefined, type: 'canary'} | {type: 'blueGreen'};

export type VolumeMount = {mountPath: string, name: string, sizeGb?: number | undefined};

export type DeployRequest = {coLocateWith?: (string | null) | undefined, cpus?: number | undefined, domain?: (string | null) | undefined, env?: Array<EnvVar> | undefined, health?: (HealthCheck | null) | undefined, image: string, memoryMb?: number | undefined, name: string, network?: boolean | undefined, port?: number | undefined, publicIngress?: boolean | undefined, stopGraceSecs?: number | undefined, strategy?: DeployStrategy | undefined, volume?: (VolumeMount | null) | undefined};

export type CreateApiV1GroupsArgs = {body: DeployRequest};

export type CreateApiV1GroupsOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const instanceInfo = z.object({generation: z.number().int().gte(0), hostPort: z.number().int().gte(0).nullable().optional(), id: z.string(), nodeId: z.string(), status: z.string()});

export const groupInfo = z.object({createdAt: z.string(), domain: z.string().nullable().optional(), id: z.string(), image: z.string(), instances: z.array(instanceInfo), name: z.string(), port: z.number().int().gte(0), replicas: z.number().int().gte(0), status: z.string(), updatedAt: z.string()});

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 or update a group deployment.
 * 
 * POST /v1/groups
 */
export const createApiV1Groups = async (args: CreateApiV1GroupsArgs, options?: CreateApiV1GroupsOptions) => {
const {baseUrl = "https://api.smolmachines.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

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

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