import {z} from 'zod'

export type GetApiV1UserFeesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const apiNextTierProgress = z.object({tier: z.number().int().optional(), threshold_usd: z.string().optional(), remaining_usd: z.string().optional(), progress_pct: z.number().optional(), taker_bps: z.number().optional(), maker_bps: z.number().optional()});

export const apiFeeScheduleEntry = z.object({tier: z.number().int().optional(), threshold_usd: z.string().optional(), taker_bps: z.number().optional(), maker_bps: z.number().optional()});

export const apiGetUserFeesResponse = z.object({tier: z.number().int().optional(), taker_bps: z.number().optional(), maker_bps: z.number().optional(), weighted_14d_volume_usd: z.string().optional(), applied_at: z.string().optional(), next_tier: apiNextTierProgress.optional(), schedule: z.array(apiFeeScheduleEntry).optional(), trial_tier: z.number().int().optional(), trial_ends_at: z.string().optional(), earned_tier: z.number().int().optional()});

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 my fees
 * 
 * GET /v1/user/fees
 */
export const getApiV1UserFees = async (options?: GetApiV1UserFeesOptions) => {
const {baseUrl = "https://api.testnet.rise.trade", fetch: fetchFn = fetch} = options ?? {}

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

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