import {z} from 'zod'

export type GetApiV1IncentivesArgs = {pageSize?: number | undefined, pageToken?: string | undefined, symbols?: Array<string> | undefined, orderBy?: 'created_at' | undefined, orderDirection?: ('asc' | 'desc') | undefined, statuses?: (Array<'active' | 'closed' | 'pending'>) | undefined};

export type GetApiV1IncentivesOptions = {baseUrl?: string | undefined, XPMAccessKey?: string | undefined, XPMTimestamp?: string | undefined, XPMSignature?: string | undefined, fetch?: typeof fetch | undefined};

export const timePeriod = z.object({programId: z.string().optional(), programType: z.string().optional(), start: z.string().optional(), end: z.string().optional(), rewardPool: z.number().optional(), status: z.enum(["active", "closed", "pending"]).optional(), discountFactor: z.number().nullable().optional(), targetSize: z.number().int().nullable().optional(), period: z.string().optional(), createdAt: z.string().optional()});

export const incentiveProgram = z.object({marketSlug: z.string().optional(), timePeriods: z.array(timePeriod).optional()});

export const listIncentivesResponse = z.object({programs: z.array(incentiveProgram).optional(), nextPageToken: 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 Incentive Programs
 * 
 * GET /v1/incentives
 */
export const getApiV1Incentives = async (args: GetApiV1IncentivesArgs, options?: GetApiV1IncentivesOptions) => {
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.pageSize != null) query.append("pageSize", String(args.pageSize))
if (args.pageToken != null) query.append("pageToken", String(args.pageToken))
for (const item of args.symbols ?? []) query.append("symbols", String(item))
if (args.orderBy != null) query.append("orderBy", String(args.orderBy))
if (args.orderDirection != null) query.append("orderDirection", String(args.orderDirection))
for (const item of args.statuses ?? []) query.append("statuses", String(item))
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/incentives${query.size > 0 ? `?${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(listIncentivesResponse, await res.json())
};