import {z} from 'zod'

export type GetApiV113fMostHeldArgs = {reportDate?: string | undefined, sort?: string | undefined, limit?: number | undefined};

export type GetApiV113fMostHeldOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const mostHeldStockDto = z.object({ticker: z.string().nullable().optional(), company: z.string().nullable().optional(), filerCount: z.number().int().optional(), deltaFilerCount: z.number().int().optional(), totalValue: z.number().int().optional(), deltaValue: z.number().int().optional(), percentOfUniverse: z.number().optional(), convictionHolders: z.number().int().nullable().optional(), convictionShare: z.number().nullable().optional(), crowding: z.number().nullable().optional(), crowdingPercentile: z.number().nullable().optional(), privateFundAdviserOwnership: z.number().nullable().optional()});

export const mostHeldResponse = z.object({reportDate: z.string().optional(), previousReportDate: z.string().optional(), coverageStartDate: z.string().optional(), isWithinCoverage: z.boolean().optional(), comparisonAvailable: z.boolean().optional(), isRankingAvailable: z.boolean().optional(), comparisonUnavailableReason: z.string().nullable().optional(), isFilingWindowOpen: z.boolean().optional(), sort: z.string().nullable().optional(), universeFilerCount: z.number().int().optional(), data: z.array(mostHeldStockDto).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
};

/**
 * Cross-sectional ranking of stocks by institutional 13F breadth for a quarter —
 * stocks ranked by number of 13F filers (default), by quarter-over-quarter change in
 * filer count, by total published position value, by conviction (filers holding the stock
 * among their ten largest positions) or by crowding (shares held by high-turnover filers and
 * private-fund advisers as a fraction of shares outstanding), with Δ filers, Δ value and the
 * stock's share of the 13F filer universe. Conviction and crowding rank the primary listings of
 * the newest closed quarter measured across every 13F book, carry no deltas, and snap a
 * requested quarter not measured yet to the newest measured one before it. Values normally use
 * report-date closing prices, may fall back to filer values, and can be zero when unavailable.
 * 
 * GET /v1/13f/most-held
 */
export const getApiV113fMostHeld = async (args: GetApiV113fMostHeldArgs, options?: GetApiV113fMostHeldOptions) => {
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 (args.reportDate != null) query.append("reportDate", String(args.reportDate))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.limit != null) query.append("limit", String(args.limit))
if (ApiKey !== undefined) headers.set('authorization', `Bearer ${ApiKey}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/13f/most-held${query.size > 0 ? `?${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(mostHeldResponse, await res.json())
};