import {z} from 'zod'

export type RateLimitDomain = 'VEHICLE';

export type GetApiV1RateLimitsArgs = {objectId: string, domain: RateLimitDomain};

export type GetApiV1RateLimitsOptions = {baseUrl?: string | undefined, OAuth2ClientCredentialsBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const rateLimitDomain = z.literal("VEHICLE");

export const rateLimitKey = z.enum(["BMW_ENERGY_API_COMMANDS", "BMW_ENERGY_API_STOP_COMMANDS", "BMW_ENERGY_API_COMMANDS_AND_FETCH_STATE"]);

export const rateLimit = z.object({remainingRequests: z.number().int(), maxRequests: z.number().int(), domain: rateLimitDomain, windowSizeSeconds: z.number().int(), objectId: z.string(), key: rateLimitKey});

export const getApiV1RateLimitsResponse = z.array(rateLimit);

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
};

/**
 * Get Rate Limits
 * 
 * GET /v1/rate-limits
 */
export const getApiV1RateLimits = async (args: GetApiV1RateLimitsArgs, options?: GetApiV1RateLimitsOptions) => {
const {baseUrl = "https://api.volteras.com", fetch: fetchFn = fetch, OAuth2ClientCredentialsBearer} = options ?? {}

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

if (args.objectId != null) query.append("objectId", String(args.objectId))
if (args.domain != null) query.append("domain", String(args.domain))
if (OAuth2ClientCredentialsBearer !== undefined) headers.set('authorization', `Bearer ${OAuth2ClientCredentialsBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/rate-limits${query.size > 0 ? `?${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(getApiV1RateLimitsResponse, await res.json())
};