import {z} from 'zod'

export type GetApiV1EtfsTickerArgs = {ticker: string};

export type GetApiV1EtfsTickerOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const etfPerformanceDto = z.object({oneWeekPercent: z.number().nullable().optional(), oneMonthPercent: z.number().nullable().optional(), sixMonthPercent: z.number().nullable().optional(), monthToDatePercent: z.number().nullable().optional(), yearToDatePercent: z.number().nullable().optional()});

export const etfAllocationDto = z.object({label: z.string().nullable().optional(), percent: z.number().optional()});

export const etfHoldingDto = z.object({name: z.string().nullable().optional(), ticker: z.string().nullable().optional(), cusip: z.string().nullable().optional(), isin: z.string().nullable().optional(), balance: z.number().nullable().optional(), units: z.string().nullable().optional(), valueUsd: z.number().nullable().optional(), percentOfNetAssets: z.number().nullable().optional(), weightPercent: z.number().nullable().optional(), marketValue: z.number().nullable().optional(), currency: z.string().nullable().optional(), assetCategory: z.string().nullable().optional(), sector: z.string().nullable().optional(), exchange: z.string().nullable().optional(), country: z.string().nullable().optional()});

export const etfProfileResponse = z.object({ticker: z.string().nullable().optional(), name: z.string().nullable().optional(), sponsor: z.string().nullable().optional(), structure: z.string().nullable().optional(), exchange: z.string().nullable().optional(), currency: z.string().nullable().optional(), isin: z.string().nullable().optional(), secSeriesId: z.string().nullable().optional(), price: z.number().nullable().optional(), priceDate: z.string().nullable().optional(), priceIsIntraday: z.boolean().optional(), dayChangePercent: z.number().nullable().optional(), netAssets: z.number().nullable().optional(), totalAssets: z.number().nullable().optional(), holdingCount: z.number().int().nullable().optional(), reportedHoldingCount: z.number().int().nullable().optional(), holdingsCoverage: z.string().nullable().optional(), reportPeriodDate: z.string().nullable().optional(), high52Week: z.number().nullable().optional(), low52Week: z.number().nullable().optional(), range52WeekStartDate: z.string().nullable().optional(), range52WeekIsPartial: z.boolean().optional(), averageVolume30Day: z.number().int().nullable().optional(), averageVolumeSessionCount: z.number().int().optional(), topTenWeightPercent: z.number().nullable().optional(), priceHistoryStartDate: z.string().nullable().optional(), performance: etfPerformanceDto.optional(), assetAllocations: z.array(etfAllocationDto).nullable().optional(), countryAllocations: z.array(etfAllocationDto).nullable().optional(), topHoldings: z.array(etfHoldingDto).nullable().optional(), coverageNote: z.string().nullable().optional()});

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 an ETF profile with exact-ticker settled market performance, split-safe range coverage, SEC-reported assets and concentration, asset and country allocation, and the ten largest stored portfolio holdings. Fields unavailable from the current SEC holdings dataset are omitted rather than inferred.
 * 
 * GET /v1/etfs/{ticker}
 */
export const getApiV1EtfsTicker = async (args: GetApiV1EtfsTickerArgs, options?: GetApiV1EtfsTickerOptions) => {
const {baseUrl = "https://api.equibles.com", fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

if (ApiKey !== undefined) headers.set('authorization', `Bearer ${ApiKey}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/etfs/${encodeURIComponent(String(args.ticker))}${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(etfProfileResponse, await res.json())
};