import {z} from 'zod'

export type GetApiGamesetPlaysGamesetsGameSetIdTopPlayersArgs = {gameSetId: string, limit?: number | undefined, cursor?: string | undefined, withExternalId?: boolean | undefined};

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

export const rankedPlayerStandings = z.object({userId: z.string(), externalId: z.string().optional(), username: z.string(), avatarUrl: z.string(), gamesPlayedCount: z.number(), correctAnswerCount: z.number()});

export const topPlayersForGameSetResponseEntity = z.object({items: z.array(rankedPlayerStandings), cursor: 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
};

/**
 * List the top players of a game set (leaderboard)
 * 
 * GET /gameset/plays/gamesets/{gameSetId}/top-players
 */
export const getApiGamesetPlaysGamesetsGameSetIdTopPlayers = async (args: GetApiGamesetPlaysGamesetsGameSetIdTopPlayersArgs, options: GetApiGamesetPlaysGamesetsGameSetIdTopPlayersOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = 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.cursor != null) query.append("cursor", String(args.cursor))
if (args.withExternalId != null) query.append("withExternalId", String(args.withExternalId))

const url = `${baseUrl.replace(/\/+$/, '')}/gameset/plays/gamesets/${encodeURIComponent(String(args.gameSetId))}/top-players${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(topPlayersForGameSetResponseEntity, await res.json())
};