import {z} from 'zod'

export type PaginationRequest = {page?: number | undefined, per_page?: number | undefined};

export type TopHolderSortField = 'position_size' | 'unrealized_pnl_usd' | 'avg_entry_price';

export type SortDirection = 'ASC' | 'DESC';

export type SortOrderTopHolderSortField = {field: TopHolderSortField, direction: SortDirection};

export type TopHoldersRequest = {market_id: string, pagination?: PaginationRequest | undefined, order_by?: Array<SortOrderTopHolderSortField> | undefined, sort?: Array<SortOrderTopHolderSortField> | undefined};

export type CreateApiApiV1PredictionMarketTopHoldersArgs = {body: TopHoldersRequest};

export type CreateApiApiV1PredictionMarketTopHoldersOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const paginationInfo = z.object({page: z.number().int().gte(1).optional(), per_page: z.number().int().gte(1).lte(1000).optional(), is_last_page: z.boolean().optional()});

export const topHolder = z.object({market_id: z.string(), outcome_index: z.number().int().optional(), address: z.string().optional(), owner_address: z.string().optional(), side: z.string().optional(), position_size: z.number().optional(), avg_entry_price: z.number().optional(), current_price: z.number().optional(), unrealized_pnl_usd: z.number().optional()});

export const topHoldersResponse = z.object({pagination: paginationInfo.optional(), data: z.array(topHolder)});

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 Prediction Market Top Holders
 * 
 * POST /api/v1/prediction-market/top-holders
 */
export const createApiApiV1PredictionMarketTopHolders = async (args: CreateApiApiV1PredictionMarketTopHoldersArgs, options?: CreateApiApiV1PredictionMarketTopHoldersOptions) => {
const {baseUrl = "https://api.nansen.ai", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("apiKey", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/prediction-market/top-holders${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(topHoldersResponse, await res.json())
};