import {z} from 'zod'

export type GetApiEarningsArgs = {symbol?: string | undefined, figi?: string | undefined, isin?: string | undefined, cusip?: string | undefined, exchange?: string | undefined, mic_code?: string | undefined, country?: string | undefined, type?: ('American Depositary Receipt' | 'Bond' | 'Bond Fund' | 'Closed-end Fund' | 'Common Stock' | 'Depositary Receipt' | 'Digital Currency' | 'ETF' | 'Exchange-Traded Note' | 'Global Depositary Receipt' | 'Limited Partnership' | 'Mutual Fund' | 'Physical Currency' | 'Preferred Stock' | 'REIT' | 'Right' | 'Structured Product' | 'Trust' | 'Unit' | 'Warrant') | undefined, period?: ('latest' | 'next') | undefined, outputsize?: number | undefined, format?: ('JSON' | 'CSV') | undefined, delimiter?: string | undefined, start_date?: string | undefined, end_date?: string | undefined, dp?: number | undefined};

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

export const earningsItem = z.object({date: z.string(), time: z.string().optional(), eps_estimate: z.number().optional(), eps_actual: z.number().optional(), difference: z.number().optional(), surprise_prc: z.number().optional()});

export const getApiEarningsResponse = z.object({meta: z.object({symbol: z.string(), name: z.string(), currency: z.string(), exchange: z.string(), mic_code: z.string(), exchange_timezone: z.string()}), earnings: z.array(earningsItem), 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
};

/**
 * Earnings
 * 
 * GET /earnings
 * 
 * Also accepts auth: queryParameter
 */
export const getApiEarnings = async (args: GetApiEarningsArgs, options?: GetApiEarningsOptions) => {
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.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.type != null) query.append("type", String(args.type))
if (args.period != null) query.append("period", String(args.period))
if (args.outputsize != null) query.append("outputsize", String(args.outputsize))
if (args.format != null) query.append("format", String(args.format))
if (args.delimiter != null) query.append("delimiter", String(args.delimiter))
if (args.start_date != null) query.append("start_date", String(args.start_date))
if (args.end_date != null) query.append("end_date", String(args.end_date))
if (args.dp != null) query.append("dp", String(args.dp))
if (authorizationHeader !== undefined) headers.set("Authorization", authorizationHeader)

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