import {z} from 'zod'

export type GetApiChallengesUndisbursedUserIdArgs = {user_id: string, offset?: number | undefined, limit?: number | undefined, completed_blocknumber?: number | undefined, challenge_id?: string | undefined};

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

export const undisbursedChallenge = z.object({challenge_id: z.string(), user_id: z.string(), specifier: z.string(), amount: z.string(), completed_blocknumber: z.number().int(), handle: z.string(), wallet: z.string(), created_at: z.string(), completed_at: z.string(), cooldown_days: z.number().int().optional()});

export const undisbursedChallenges = z.object({data: z.array(undisbursedChallenge).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 undisbursed challenges for a user
 * 
 * GET /challenges/undisbursed/{user_id}
 */
export const getApiChallengesUndisbursedUserId = async (args: GetApiChallengesUndisbursedUserIdArgs, options: GetApiChallengesUndisbursedUserIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.completed_blocknumber != null) query.append("completed_blocknumber", String(args.completed_blocknumber))
if (args.challenge_id != null) query.append("challenge_id", String(args.challenge_id))

const url = `${baseUrl.replace(/\/+$/, '')}/challenges/undisbursed/${encodeURIComponent(String(args.user_id))}${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(undisbursedChallenges, await res.json())
};