import {z} from 'zod'

export type GetApiV2LeaguesArgs = {limit?: number | undefined, offset?: number | undefined};

export type GetApiV2LeaguesOptions = {baseUrl?: string | undefined, XPMAccessKey?: string | undefined, XPMTimestamp?: string | undefined, XPMSignature?: string | undefined, fetch?: typeof fetch | undefined};

export const gatewaySportsV2League = z.object({name: z.string().optional(), slug: z.string().optional(), image: z.string().nullable().optional(), isOperational: z.boolean().nullable().optional(), id: z.number().int().optional(), sportId: z.number().int().optional(), tagId: z.number().int().nullable().optional(), resolution: z.string().nullable().optional(), ordering: z.string().nullable().optional(), activeSeriesId: z.number().int().nullable().optional(), createdAt: z.string().nullable().optional(), abbreviation: z.string().nullable().optional()});

export const gatewaySportsV2GetLeaguesResponse = z.object({leagues: z.array(gatewaySportsV2League).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 All Leagues
 * 
 * GET /v2/leagues
 */
export const getApiV2Leagues = async (args: GetApiV2LeaguesArgs, options?: GetApiV2LeaguesOptions) => {
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.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
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 = `${baseUrl.replace(/\/+$/, '')}/v2/leagues${query.size > 0 ? `?${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(gatewaySportsV2GetLeaguesResponse, await res.json())
};