import {z} from 'zod'

export type GetApiBabylonFinalityV1VpDstCacheHeightArgs = {height: unknown};

export type GetApiBabylonFinalityV1VpDstCacheHeightOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const getApiBabylonFinalityV1VpDstCacheHeightResponse = z.object({total_voting_power: z.string().optional(), finality_providers: z.array(z.object({btc_pk_hex: z.string().optional(), addr: z.string().optional(), commission: z.string().optional(), total_bonded_sat: z.string().optional(), is_timestamped: z.boolean().optional(), is_jailed: z.boolean().optional(), is_slashed: z.boolean().optional()})).optional(), num_active_fps: 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
};

/**
 * VotingPowerDistribution queries the voting power distribution cache
 * Note: The vp dst cache is only kept at the store until that block height is finalized
 * 
 * GET /babylon/finality/v1/vp_dst_cache/{height}
 */
export const getApiBabylonFinalityV1VpDstCacheHeight = async (args: GetApiBabylonFinalityV1VpDstCacheHeightArgs, options: GetApiBabylonFinalityV1VpDstCacheHeightOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/babylon/finality/v1/vp_dst_cache/${encodeURIComponent(String(args.height))}${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(getApiBabylonFinalityV1VpDstCacheHeightResponse, await res.json())
};