import {z} from 'zod'

export type ApiParameterPeriod = '1d' | '7d' | '30d' | '90d' | '180d' | '1y' | 'total';

export type GetApiApyArgs = {period?: ApiParameterPeriod | undefined};

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

export const apyEntry = z.object({bonusApr: z.number(), baseApy: z.number(), apy: z.number()});

export const recordStringApyEntry = z.record(z.string(), apyEntry);

export const apyResponse = z.object({glvs: recordStringApyEntry, markets: recordStringApyEntry});

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 /apy
 */
export const getApiApy = async (args: GetApiApyArgs, options?: GetApiApyOptions) => {
const {baseUrl = "https://arbitrum.gmxapi.io/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.period != null) query.append("period", String(args.period))

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