import {z} from 'zod'

export type GetApiTickersArgs = {quotes?: string | undefined};

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

export const quote = z.object({price: z.number().optional(), volume_24h: z.number().optional(), volume_24h_change_24h: z.number().optional(), market_cap: z.number().optional(), market_cap_change_24h: z.number().optional(), percent_change_1h: z.number().optional(), percent_change_12h: z.number().optional(), percent_change_24h: z.number().optional(), percent_change_7d: z.number().optional(), percent_change_30d: z.number().optional(), percent_change_1y: z.number().optional(), ath_price: z.number().optional(), ath_date: z.string().optional(), percent_from_price_ath: z.number().optional()});

export const quotes = z.record(z.string(), quote);

export const tick = z.object({id: z.string().optional(), name: z.string().optional(), symbol: z.string().optional(), rank: z.number().optional(), circulating_supply: z.number().optional(), total_supply: z.number().optional(), max_supply: z.number().optional(), beta_value: z.number().optional(), first_data_at: z.string().optional(), last_updated: z.string().optional(), quotes: quotes.optional()});

export const getApiTickersResponse = z.array(tick);

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 tickers for all active coins
 * 
 * GET /tickers
 */
export const getApiTickers = async (args: GetApiTickersArgs, options?: GetApiTickersOptions) => {
const {baseUrl = "https://api.coinpaprika.com/v1", fetch: fetchFn = fetch} = options ?? {}

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

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

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