// Copyright © Aptos Foundation
// SPDX-License-Identifier: Apache-2.0

/**
 * Types of API endpoints used for routing requests in the Aptos network.
 * @group Implementation
 * @category Utils
 */
export enum AptosApiType {
  FULLNODE = "Fullnode",
  INDEXER = "Indexer",
  FAUCET = "Faucet",
  PEPPER = "Pepper",
  PROVER = "Prover",
}

/**
 * The default max gas amount when none is given.
 *
 * This is the maximum number of gas units that will be used by a transaction before being rejected.
 *
 * Note that max gas amount varies based on the transaction.  A larger transaction will go over this
 * default gas amount, and the value will need to be changed for the specific transaction.
 * @group Implementation
 * @category Utils
 */
export const DEFAULT_MAX_GAS_AMOUNT = 2000000;

/**
 * The minimum max gas amount that the SDK will allow for a transaction.
 *
 * This value acts as a floor to prevent transactions from being built with a max gas amount
 * below the network's minimum transaction gas units, which would cause
 * MAX_GAS_UNITS_BELOW_MIN_TRANSACTION_GAS_UNITS errors.
 * @group Implementation
 * @category Utils
 */
export const MIN_MAX_GAS_AMOUNT = 2000;

/**
 * Minimum gas unit price (Octas per gas unit) for encrypted transactions.
 * Encrypted transactions require 2× the network base minimum (100) because validators
 * bear the decryption compute cost (aptos-core `encrypted_txn_min_price_per_gas_unit`,
 * RELEASE_V1_45+). The node rejects encrypted submissions below this price.
 */
export const MIN_ENCRYPTED_TXN_GAS_UNIT_PRICE = 200;

/**
 * The default transaction expiration seconds from now.
 *
 * This time is how long until the blockchain nodes will reject the transaction.
 *
 * Note that the transaction expiration time varies based on network connection and network load.  It may need to be
 * increased for the transaction to be processed.
 * @group Implementation
 * @category Utils
 */
export const DEFAULT_TXN_EXP_SEC_FROM_NOW = 20;

/**
 * The default number of seconds to wait for a transaction to be processed.
 *
 * This time is the amount of time that the SDK will wait for a transaction to be processed when waiting for
 * the results of the transaction.  It may take longer based on network connection and network load.
 * @group Implementation
 * @category Utils
 */
export const DEFAULT_TXN_TIMEOUT_SEC = 20;

/**
 * The default gas currency for the network.
 * @group Implementation
 * @category Utils
 */
export const APTOS_COIN = "0x1::aptos_coin::AptosCoin";
/**
 * @group Implementation
 * @category Utils
 */
export const APTOS_FA = "0x000000000000000000000000000000000000000000000000000000000000000a";
/**
 * @group Implementation
 * @category Utils
 */
export const RAW_TRANSACTION_SALT = "APTOS::RawTransaction";
/**
 * @group Implementation
 * @category Utils
 */
export const RAW_TRANSACTION_WITH_DATA_SALT = "APTOS::RawTransactionWithData";

export const ACCOUNT_ABSTRACTION_SIGNING_DATA_SALT = "APTOS::AASigningData";

/**
 * Supported processor types for the indexer API, sourced from the processor_status table in the indexer database.
 * {@link https://cloud.hasura.io/public/graphiql?endpoint=https://api.mainnet.aptoslabs.com/v1/graphql}
 * @group Implementation
 * @category Utils
 */
export enum ProcessorType {
  ACCOUNT_RESTORATION_PROCESSOR = "account_restoration_processor",
  ACCOUNT_TRANSACTION_PROCESSOR = "account_transactions_processor",
  DEFAULT = "default_processor",
  EVENTS_PROCESSOR = "events_processor",
  // Fungible asset processor also handles coins
  FUNGIBLE_ASSET_PROCESSOR = "fungible_asset_processor",
  STAKE_PROCESSOR = "stake_processor",
  // Token V2 processor replaces Token processor (not only for digital assets)
  TOKEN_V2_PROCESSOR = "token_v2_processor",
  USER_TRANSACTION_PROCESSOR = "user_transaction_processor",
  OBJECT_PROCESSOR = "objects_processor",
}

/**
 * Regular expression pattern for Firebase Auth issuer URLs
 * Matches URLs in the format: https://securetoken.google.com/[project-id]
 * where project-id can contain letters, numbers, hyphens, and underscores
 */
export const FIREBASE_AUTH_ISS_PATTERN = /^https:\/\/securetoken\.google\.com\/[a-zA-Z0-9-_]+$/;

/**
 * Shared TextEncoder instance for string serialization to avoid repeated instantiation.
 *
 * The explicit structural type prevents TypeScript from inferring `import("util").TextEncoder`
 * (from `@types/node`) into the emitted `.d.ts`, which would force every SDK consumer to
 * have `@types/node` installed. The SDK is runtime-agnostic (browser/Node/Bun/Deno/RN), so
 * we expose only the minimal shape the SDK actually uses.
 */
export const TEXT_ENCODER: { encode(input: string): Uint8Array } = new TextEncoder();