import {z} from 'zod'

export type GetApiFundsArgs = {symbol?: string | undefined, figi?: string | undefined, isin?: string | undefined, cusip?: string | undefined, cik?: string | undefined, exchange?: string | undefined, mic_code?: string | undefined, country?: string | undefined, format?: ('JSON' | 'CSV') | undefined, delimiter?: string | undefined, show_plan?: boolean | undefined, page?: number | undefined, outputsize?: number | undefined};

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

export const fundResponseItem = z.object({symbol: z.string(), name: z.string(), country: z.string(), currency: z.string(), exchange: z.string(), mic_code: z.string(), type: z.string(), figi_code: z.string(), cfi_code: z.string(), isin: z.string(), cusip: z.string(), access: z.object({global: z.string(), plan: z.string(), plan_business: z.string()}).optional()});

export const getApiFundsResponse = z.object({result: z.object({count: z.number().int(), list: z.array(fundResponseItem)}), status: z.string()});

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
};

/**
 * Funds
 * 
 * GET /funds
 * 
 * Also accepts auth: queryParameter
 */
export const getApiFunds = async (args: GetApiFundsArgs, options?: GetApiFundsOptions) => {
const {baseUrl = "https://api.twelvedata.com", fetch: fetchFn = fetch, authorizationHeader} = options ?? {}

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

if (args.symbol != null) query.append("symbol", String(args.symbol))
if (args.figi != null) query.append("figi", String(args.figi))
if (args.isin != null) query.append("isin", String(args.isin))
if (args.cusip != null) query.append("cusip", String(args.cusip))
if (args.cik != null) query.append("cik", String(args.cik))
if (args.exchange != null) query.append("exchange", String(args.exchange))
if (args.mic_code != null) query.append("mic_code", String(args.mic_code))
if (args.country != null) query.append("country", String(args.country))
if (args.format != null) query.append("format", String(args.format))
if (args.delimiter != null) query.append("delimiter", String(args.delimiter))
if (args.show_plan != null) query.append("show_plan", String(args.show_plan))
if (args.page != null) query.append("page", String(args.page))
if (args.outputsize != null) query.append("outputsize", String(args.outputsize))
if (authorizationHeader !== undefined) headers.set("Authorization", authorizationHeader)

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