import {z} from 'zod'

export type DateTimeSeconds = string;

export type EmptyString = string;

export type NamePrivileged = string;

export type NameBasic = string;

export type NameBid = string;

export type NameCatchAll = string;

export type Name = NamePrivileged | NameBasic | NameBid | NameCatchAll;

export type Sha256 = string;

export type ProducerAuthorityList = Array<{threshold?: number | undefined, keys?: (Array<{key?: string | undefined, weight?: number | undefined}>) | undefined}>;

export type ProducerSchedule = {version?: number | undefined, producers?: (Array<{producer_name?: string | undefined, authority?: ProducerAuthorityList | undefined}>) | undefined};

export type Extension = Array<number | string>;

export type Signature = string;

export type DateTime = string;

export type WholeNumber = string | number;

export type Authority = {actor: Name, permission: Name};

export type Action = {account: Name, name: Name, authorization: Array<Authority>, data: {[key: string]: unknown}, hex_data: string};

export type Transaction = {expiration: DateTime, ref_block_num: number, ref_block_prefix: number, max_net_usage_words: WholeNumber, max_cpu_usage_ms: WholeNumber, delay_sec: number, context_free_actions: Array<Action>, actions: Array<Action>, transaction_extensions?: Array<Extension> | undefined};

export type PackedTransaction = {id: Sha256, signatures: Array<Signature>, compression: string, packed_context_free_data: string, context_free_data: Array<string>, packed_trx: string, transaction: Transaction};

export type TransactionVariant = Sha256 | PackedTransaction;

export type TransactionReceipt = {status: 'executed' | 'soft_fail' | 'hard_fail' | 'delayed' | 'expired', cpu_usage_us: number, net_usage_words: number, trx: TransactionVariant};

export type Block = {timestamp: DateTimeSeconds, producer: EmptyString | Name, confirmed: number, previous: Sha256, transaction_mroot: Sha256, action_mroot: Sha256, schedule_version: number, new_producers: ProducerSchedule, header_extensions?: Extension | undefined, new_protocol_features?: Array<Record<string, never>> | undefined, producer_signature: Signature, transactions?: Array<TransactionReceipt> | undefined, block_extensions?: Extension | undefined, id?: Sha256 | undefined, block_num?: number | undefined, ref_block_prefix?: number | undefined};

export type CreateApiPushBlockArgs = {body: Block};

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

export const createApiPushBlockResponse = z.unknown();

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
};

/**
 * Sends a block to the blockchain.
 * 
 * POST /push_block
 */
export const createApiPushBlock = async (args: CreateApiPushBlockArgs, options?: CreateApiPushBlockOptions) => {
const {baseUrl = "https://wax.greymass.com/v1/chain", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/push_block${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiPushBlockResponse, await res.json())
};