import {z} from 'zod'

export type GetApiV113fMarketActivityArgs = {bucket: string, reportDate?: string | undefined, limit?: number | undefined};

export type GetApiV113fMarketActivityOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const marketActivityStockDto = z.object({ticker: z.string().nullable().optional(), company: z.string().nullable().optional(), deltaShares: z.number().int().nullable().optional(), deltaValue: z.number().int().nullable().optional(), filerCount: z.number().int().nullable().optional()});

export const marketActivityResponse = z.object({bucket: z.string().nullable().optional(), 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(), data: z.array(marketActivityStockDto).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
};

/**
 * Market-wide 13F leaderboards for a quarter — which stocks were most bought, most
 * sold, most initiated or most exited across all 13F filers versus the prior quarter.
 * Mover deltas are restated onto today's split basis; ordering is by change in published
 * position value. Values normally use report-date closing prices, may fall back to filer
 * values, and can be zero when unavailable; the delta therefore includes price movement,
 * not just net buying or selling.
 * 
 * GET /v1/13f/market-activity
 */
export const getApiV113fMarketActivity = async (args: GetApiV113fMarketActivityArgs, options?: GetApiV113fMarketActivityOptions) => {
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.bucket != null) query.append("bucket", String(args.bucket))
if (args.reportDate != null) query.append("reportDate", String(args.reportDate))
if (args.limit != null) query.append("limit", String(args.limit))
if (ApiKey !== undefined) headers.set('authorization', `Bearer ${ApiKey}`)

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