import {z} from 'zod'

export type GetApiV1TradesArgs = {page_size?: number | undefined, cursor?: string | undefined, order_by?: string | undefined, direction?: string | undefined, min_timestamp?: string | undefined, max_timestamp?: string | undefined};

export type GetApiV1TradesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const trade = z.object({transaction_id: z.number(), status: z.string().min(1), a: z.object({order_id: z.number(), token_type: z.string().min(1), sold: z.string().min(1)}), b: z.object({order_id: z.number(), token_type: z.string().min(1), token_id: z.string().min(1), token_address: z.string().min(1), sold: z.string().min(1)}), timestamp: z.string().min(1)});

export const tradeList = z.object({cursor: z.string().optional(), remaining: z.number().int().optional(), result: z.array(trade).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 a list of trades
 * 
 * GET /v1/trades
 */
export const getApiV1Trades = async (args: GetApiV1TradesArgs, options?: GetApiV1TradesOptions) => {
const {baseUrl = "https://api.x.immutable.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.page_size != null) query.append("page_size", String(args.page_size))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.order_by != null) query.append("order_by", String(args.order_by))
if (args.direction != null) query.append("direction", String(args.direction))
if (args.min_timestamp != null) query.append("min_timestamp", String(args.min_timestamp))
if (args.max_timestamp != null) query.append("max_timestamp", String(args.max_timestamp))

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