import {z} from 'zod'

export type CellReference = {kind: string, name?: string | undefined, uuid: unknown};

export type RackResources = {cell_reference?: CellReference | undefined, location?: string | undefined};

export type Rack = {name: string, resources: RackResources};

export type UserReference = {kind: string, name?: string | undefined, uuid: unknown};

export type RackMetadata = {last_update_time?: string | undefined, kind: string, uuid?: unknown | undefined, spec_version?: number | undefined, creation_time?: string | undefined, spec_hash?: string | undefined, should_force_translate?: boolean | undefined, owner_reference?: UserReference | undefined, categories?: {[key: string]: string} | undefined, name?: string | undefined};

export type RackIntentInput = {spec: Rack, api_version?: string | undefined, metadata: RackMetadata};

export type CreateApiRacksArgs = {body: RackIntentInput};

export type CreateApiRacksOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const messageResource = z.object({message: z.string(), reason: z.string(), details: z.record(z.string(), z.string()).optional()});

export const cellReference = z.object({kind: z.string(), name: z.string().optional(), uuid: z.string()});

export const rackResources = z.object({cell_reference: cellReference.optional(), location: z.string().optional()});

export const rackDefStatus = z.object({state: z.string().optional(), message_list: z.array(messageResource).optional(), name: z.string(), resources: rackResources});

export const rack = z.object({name: z.string().max(64), resources: rackResources});

export const userReference = z.object({kind: z.string(), name: z.string().optional(), uuid: z.string()});

export const rackMetadata = z.object({last_update_time: z.string().optional(), kind: z.string(), uuid: z.string().optional(), spec_version: z.number().int().optional(), creation_time: z.string().optional(), spec_hash: z.string().optional(), should_force_translate: z.boolean().optional(), owner_reference: userReference.optional(), categories: z.record(z.string(), z.string()).optional(), name: z.string().max(64).optional()});

export const rackIntentResponse = z.object({status: rackDefStatus.optional(), spec: rack.optional(), api_version: z.string(), metadata: rackMetadata});

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 a rack instance
 * 
 * POST /racks
 */
export const createApiRacks = async (args: CreateApiRacksArgs, options: CreateApiRacksOptions) => {
const {baseUrl, fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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