import {z} from 'zod'

export type GetApiCashFlowArgs = {symbol?: string | undefined, figi?: string | undefined, isin?: string | undefined, cusip?: string | undefined, exchange?: string | undefined, mic_code?: string | undefined, country?: string | undefined, period?: ('annual' | 'quarterly') | undefined, start_date?: string | undefined, end_date?: string | undefined, outputsize?: number | undefined};

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

export const cashFlowStruct = z.object({fiscal_date: z.string(), quarter: z.string().optional(), year: z.number().int().optional(), operating_activities: z.object({net_income: z.number().optional(), depreciation: z.number().optional(), deferred_taxes: z.number().optional(), stock_based_compensation: z.number().optional(), other_non_cash_items: z.number().optional(), accounts_receivable: z.number().optional(), accounts_payable: z.number().optional(), other_assets_liabilities: z.number().optional(), operating_cash_flow: z.number().optional()}).optional(), investing_activities: z.object({capital_expenditures: z.number().optional(), net_intangibles: z.number().optional(), net_acquisitions: z.number().optional(), purchase_of_investments: z.number().optional(), sale_of_investments: z.number().optional(), other_investing_activity: z.number().optional(), investing_cash_flow: z.number().optional()}).optional(), financing_activities: z.object({long_term_debt_issuance: z.number().optional(), long_term_debt_payments: z.number().optional(), short_term_debt_issuance: z.number().optional(), common_stock_issuance: z.number().optional(), common_stock_repurchase: z.number().optional(), common_dividends: z.number().optional(), other_financing_charges: z.number().optional(), financing_cash_flow: z.number().optional()}).optional(), end_cash_position: z.number().optional(), income_tax_paid: z.number().optional(), interest_paid: z.number().optional(), free_cash_flow: z.number().optional()});

export const getApiCashFlowResponse = 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(), period: z.string()}), cash_flow: z.array(cashFlowStruct)});

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
};

/**
 * Cash flow
 * 
 * GET /cash_flow
 * 
 * Also accepts auth: queryParameter
 */
export const getApiCashFlow = async (args: GetApiCashFlowArgs, options?: GetApiCashFlowOptions) => {
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.period != null) query.append("period", String(args.period))
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.outputsize != null) query.append("outputsize", String(args.outputsize))
if (authorizationHeader !== undefined) headers.set("Authorization", authorizationHeader)

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