import {z} from 'zod'

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

export const validatorPriority = z.object({address: z.string().optional(), pub_key: z.object({type: z.string(), value: z.string()}).optional(), voting_power: z.string().optional(), proposer_priority: z.string().optional()});

export const dumpConsensusResponse = z.object({jsonrpc: z.string(), id: z.number().int(), result: z.object({round_state: z.object({height: z.string(), round: z.number().int(), step: z.number().int(), start_time: z.string(), commit_time: z.string(), validators: z.object({validators: z.array(validatorPriority)}), locked_round: z.number().int(), valid_round: z.string(), votes: z.array(z.object({round: z.string().optional(), prevotes: z.array(z.string()).nullable().optional(), prevotes_bit_array: z.string().optional(), precommits: z.array(z.string()).nullable().optional(), precommits_bit_array: z.string().optional()})), commit_round: z.number().int(), last_commit: z.object({votes: z.array(z.string()), votes_bit_array: z.string(), peer_maj_23s: z.object({})}).nullable(), last_validators: z.object({validators: z.array(validatorPriority)}), triggered_timeout_precommit: z.boolean()}), proposer: z.object({address: z.string(), pub_key: z.object({type: z.string(), value: z.string()}), voting_power: z.string(), proposer_priority: z.string()}).optional(), peers: z.array(z.object({node_address: z.string().optional(), peer_state: z.object({round_state: z.object({height: z.string(), round: z.string(), step: z.number().int(), start_time: z.string(), proposal: z.boolean(), proposal_block_parts_header: z.object({total: z.number().int(), hash: z.string()}), proposal_pol_round: z.number().int().nullable(), proposal_pol: z.string().nullable(), prevotes: z.string().nullable(), precommits: z.string().nullable(), last_commit_round: z.number().int().nullable(), last_commit: z.string().nullable(), catchup_commit_round: z.number().int().nullable(), catchup_commit: z.string().nullable()}), stats: z.object({votes: z.string(), block_parts: 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 consensus state
 * 
 * GET /dump_consensus_state
 */
export const getApiDumpConsensusState = async (options?: GetApiDumpConsensusStateOptions) => {
const {baseUrl = "http://localhost:26657", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/dump_consensus_state${query.size > 0 ? `?${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(dumpConsensusResponse, await res.json())
};