import {z} from 'zod'

export type GetApiV1PortfolioPositionsArgs = {market?: string | undefined, limit?: number | undefined, cursor?: string | undefined};

export type GetApiV1PortfolioPositionsOptions = {baseUrl?: string | undefined, XPMAccessKey?: string | undefined, XPMTimestamp?: string | undefined, XPMSignature?: string | undefined, fetch?: typeof fetch | undefined};

export const amount = z.object({value: z.string(), currency: z.string()});

export const marketMetadata = z.object({slug: z.string().optional(), icon: z.string().optional(), title: z.string().optional(), outcome: z.string().optional(), eventSlug: z.string().optional()});

export const userPosition = z.object({netPosition: z.string().optional(), qtyBought: z.string().optional(), qtySold: z.string().optional(), cost: amount.optional(), realized: amount.optional(), bodPosition: z.string().optional(), expired: z.boolean().optional(), updateTime: z.string().optional(), marketMetadata: marketMetadata.optional(), cashValue: amount.optional(), qtyAvailable: z.string().nullable().optional(), netPositionDecimal: z.string().optional(), qtyBoughtDecimal: z.string().optional(), qtySoldDecimal: z.string().optional(), bodPositionDecimal: z.string().optional(), qtyAvailableDecimal: z.string().nullable().optional()});

export const getUserPositionsResponse = z.object({positions: z.record(z.string(), userPosition).optional(), nextCursor: z.string().optional(), eof: z.boolean().optional(), availablePositions: z.array(z.string()).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 User Positions
 * 
 * GET /v1/portfolio/positions
 */
export const getApiV1PortfolioPositions = async (args: GetApiV1PortfolioPositionsArgs, options?: GetApiV1PortfolioPositionsOptions) => {
const {baseUrl = "https://api.polymarket.us", fetch: fetchFn = fetch, XPMAccessKey, XPMTimestamp, XPMSignature} = options ?? {}

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

if (args.market != null) query.append("market", String(args.market))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (XPMAccessKey !== undefined) headers.set("X-PM-Access-Key", XPMAccessKey)
if (XPMTimestamp !== undefined) headers.set("X-PM-Timestamp", XPMTimestamp)
if (XPMSignature !== undefined) headers.set("X-PM-Signature", XPMSignature)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/portfolio/positions${query.size > 0 ? `?${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(getUserPositionsResponse, await res.json())
};