import {z} from 'zod'

export type GetApiCoinsMappingsArgs = {coinpaprika?: string | undefined, coinmarketcap?: string | undefined, coingecko?: string | undefined, cryptocompare?: string | undefined, isin?: string | undefined, dti?: string | undefined};

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

export const apiMappings = z.object({coinpaprika: z.string().optional(), coinmarketcap: z.string().optional(), coingecko: z.string().optional(), cryptocompare: z.string().optional(), isin: z.string().optional(), dti: z.string().optional(), updated_at: z.string().optional()});

export const getApiCoinsMappingsResponse = z.array(apiMappings);

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
};

/**
 * API ID mappings
 * 
 * GET /coins/mappings
 */
export const getApiCoinsMappings = async (args: GetApiCoinsMappingsArgs, options?: GetApiCoinsMappingsOptions) => {
const {baseUrl = "https://api.coinpaprika.com/v1", fetch: fetchFn = fetch, APIKeyAuth} = options ?? {}

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

if (args.coinpaprika != null) query.append("coinpaprika", String(args.coinpaprika))
if (args.coinmarketcap != null) query.append("coinmarketcap", String(args.coinmarketcap))
if (args.coingecko != null) query.append("coingecko", String(args.coingecko))
if (args.cryptocompare != null) query.append("cryptocompare", String(args.cryptocompare))
if (args.isin != null) query.append("isin", String(args.isin))
if (args.dti != null) query.append("dti", String(args.dti))
if (APIKeyAuth !== undefined) headers.set("Authorization", APIKeyAuth)

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