Constants.js

'use strict';

const Package = exports.Package = require('../../package.json');
const { Error, RangeError } = require('../errors');
const browser = exports.browser = typeof window !== 'undefined';

/**
 * Options for a client.
 * @typedef {Object} ClientOptions
 * @property {number|number[]} [shards] ID of the shard to run, or an array of shard IDs
 * @property {number} [shardCount=1] Total number of shards that will be spawned by this Client
 * @property {number} [totalShardCount=1] The total amount of shards used by all processes of this bot
 * (e.g. recommended shard count, shard count of the ShardingManager)
 * @property {number} [messageCacheMaxSize=200] Maximum number of messages to cache per channel
 * (-1 or Infinity for unlimited - don't do this without message sweeping, otherwise memory usage will climb
 * indefinitely)
 * @property {number} [messageCacheLifetime=0] How long a message should stay in the cache until it is considered
 * sweepable (in seconds, 0 for forever)
 * @property {number} [messageSweepInterval=0] How frequently to remove messages from the cache that are older than
 * the message cache lifetime (in seconds, 0 for never)
 * @property {boolean} [fetchAllMembers=false] Whether to cache all guild members and users upon startup, as well as
 * upon joining a guild (should be avoided whenever possible)
 * @property {boolean} [disableEveryone=false] Default value for {@link MessageOptions#disableEveryone}
 * @property {PartialType[]} [partials] Structures allowed to be partial. This means events can be emitted even when
 * they're missing all the data for a particular structure. See the "Partials" topic listed in the sidebar for some
 * important usage information, as partials require you to put checks in place when handling data.
 * @property {number} [restWsBridgeTimeout=5000] Maximum time permitted between REST responses and their
 * corresponding websocket events
 * @property {number} [restTimeOffset=500] Extra time in millseconds to wait before continuing to make REST
 * requests (higher values will reduce rate-limiting errors on bad connections)
 * @property {number} [restSweepInterval=60] How frequently to delete inactive request buckets, in seconds
 * (or 0 for never)
 * @property {number} [retryLimit=1] How many times to retry on 5XX errors (Infinity for indefinite amount of retries)
 * @property {PresenceData} [presence] Presence data to use upon login
 * @property {WSEventType[]} [disabledEvents] An array of disabled websocket events. Events in this array will not be
 * processed, potentially resulting in performance improvements for larger bots. Only disable events you are
 * 100% certain you don't need, as many are important, but not obviously so. The safest one to disable with the
 * most impact is typically `TYPING_START`.
 * @property {WebsocketOptions} [ws] Options for the WebSocket
 * @property {HTTPOptions} [http] HTTP options
 */
exports.DefaultOptions = {
  shardCount: 1,
  totalShardCount: 1,
  messageCacheMaxSize: 200,
  messageCacheLifetime: 0,
  messageSweepInterval: 0,
  fetchAllMembers: false,
  disableEveryone: false,
  partials: [],
  restWsBridgeTimeout: 5000,
  disabledEvents: [],
  retryLimit: 1,
  restTimeOffset: 500,
  restSweepInterval: 60,
  presence: {},

  /**
   * WebSocket options (these are left as snake_case to match the API)
   * @typedef {Object} WebsocketOptions
   * @property {number} [large_threshold=250] Number of members in a guild to be considered large
   * @property {boolean} [compress=false] Whether to compress data sent on the connection
   * (defaults to `false` for browsers)
   */
  ws: {
    large_threshold: 250,
    compress: false,
    properties: {
      $os: browser ? 'browser' : process.platform,
      $browser: 'discord.js',
      $device: 'discord.js',
    },
    version: 6,
  },

  /**
   * HTTP options
   * @typedef {Object} HTTPOptions
   * @property {number} [version=7] API version to use
   * @property {string} [api='https://discordapp.com/api'] Base url of the API
   * @property {string} [cdn='https://cdn.discordapp.com'] Base url of the CDN
   * @property {string} [invite='https://discord.gg'] Base url of invites
   */
  http: {
    version: 7,
    api: 'https://discordapp.com/api',
    cdn: 'https://cdn.discordapp.com',
    invite: 'https://discord.gg',
  },
};

exports.UserAgent = browser ? null :
  `DiscordBot (${Package.homepage.split('#')[0]}, ${Package.version}) Node.js/${process.version}`;

exports.WSCodes = {
  1000: 'WS_CLOSE_REQUESTED',
  4004: 'TOKEN_INVALID',
  4010: 'SHARDING_INVALID',
  4011: 'SHARDING_REQUIRED',
};

const AllowedImageFormats = [
  'webp',
  'png',
  'jpg',
  'gif',
];

const AllowedImageSizes = Array.from({ length: 8 }, (e, i) => 2 ** (i + 4));

function makeImageUrl(root, { format = 'webp', size } = {}) {
  if (format && !AllowedImageFormats.includes(format)) throw new Error('IMAGE_FORMAT', format);
  if (size && !AllowedImageSizes.includes(size)) throw new RangeError('IMAGE_SIZE', size);
  return `${root}.${format}${size ? `?size=${size}` : ''}`;
}
/**
 * Options for Image URLs.
 * @typedef {Object} ImageURLOptions
 * @property {string} [format] One of `webp`, `png`, `jpg`, `gif`. If no format is provided,
 * it will be `gif` for animated avatars or otherwise `webp`
 * @property {number} [size] One of `16`, `32`, `64`, `128`, `256`, `512`, `1024`, `2048`
 */

exports.Endpoints = {
  CDN(root) {
    return {
      Emoji: (emojiID, format = 'png') => `${root}/emojis/${emojiID}.${format}`,
      Asset: name => `${root}/assets/${name}`,
      DefaultAvatar: number => `${root}/embed/avatars/${number}.png`,
      Avatar: (userID, hash, format = 'default', size) => {
        if (format === 'default') format = hash.startsWith('a_') ? 'gif' : 'webp';
        return makeImageUrl(`${root}/avatars/${userID}/${hash}`, { format, size });
      },
      Banner: (guildID, hash, format = 'webp', size) =>
        makeImageUrl(`${root}/banners/${guildID}/${hash}`, { format, size }),
      Icon: (guildID, hash, format = 'default', size) => {
        if (format === 'default') format = hash.startsWith('a_') ? 'gif' : 'webp';
        return makeImageUrl(`${root}/icons/${guildID}/${hash}`, { format, size });
      },
      AppIcon: (clientID, hash, { format = 'webp', size } = {}) =>
        makeImageUrl(`${root}/app-icons/${clientID}/${hash}`, { size, format }),
      AppAsset: (clientID, hash, { format = 'webp', size } = {}) =>
        makeImageUrl(`${root}/app-assets/${clientID}/${hash}`, { size, format }),
      GDMIcon: (channelID, hash, format = 'webp', size) =>
        makeImageUrl(`${root}/channel-icons/${channelID}/${hash}`, { size, format }),
      Splash: (guildID, hash, format = 'webp', size) =>
        makeImageUrl(`${root}/splashes/${guildID}/${hash}`, { size, format }),
      TeamIcon: (teamID, hash, { format = 'webp', size } = {}) =>
        makeImageUrl(`${root}/team-icons/${teamID}/${hash}`, { size, format }),
    };
  },
  invite: (root, code) => `${root}/${code}`,
  botGateway: '/gateway/bot',
};

/**
 * The current status of the client. Here are the available statuses:
 * * READY: 0
 * * CONNECTING: 1
 * * RECONNECTING: 2
 * * IDLE: 3
 * * NEARLY: 4
 * * DISCONNECTED: 5
 * @typedef {number} Status
 */
exports.Status = {
  READY: 0,
  CONNECTING: 1,
  RECONNECTING: 2,
  IDLE: 3,
  NEARLY: 4,
  DISCONNECTED: 5,
};

/**
 * The current status of a voice connection. Here are the available statuses:
 * * CONNECTED: 0
 * * CONNECTING: 1
 * * AUTHENTICATING: 2
 * * RECONNECTING: 3
 * * DISCONNECTED: 4
 * @typedef {number} VoiceStatus
 */
exports.VoiceStatus = {
  CONNECTED: 0,
  CONNECTING: 1,
  AUTHENTICATING: 2,
  RECONNECTING: 3,
  DISCONNECTED: 4,
};

exports.OPCodes = {
  DISPATCH: 0,
  HEARTBEAT: 1,
  IDENTIFY: 2,
  STATUS_UPDATE: 3,
  VOICE_STATE_UPDATE: 4,
  VOICE_GUILD_PING: 5,
  RESUME: 6,
  RECONNECT: 7,
  REQUEST_GUILD_MEMBERS: 8,
  INVALID_SESSION: 9,
  HELLO: 10,
  HEARTBEAT_ACK: 11,
};

exports.VoiceOPCodes = {
  IDENTIFY: 0,
  SELECT_PROTOCOL: 1,
  READY: 2,
  HEARTBEAT: 3,
  SESSION_DESCRIPTION: 4,
  SPEAKING: 5,
  HELLO: 8,
  CLIENT_CONNECT: 12,
  CLIENT_DISCONNECT: 13,
};

exports.Events = {
  RATE_LIMIT: 'rateLimit',
  CLIENT_READY: 'ready',
  GUILD_CREATE: 'guildCreate',
  GUILD_DELETE: 'guildDelete',
  GUILD_UPDATE: 'guildUpdate',
  GUILD_UNAVAILABLE: 'guildUnavailable',
  GUILD_AVAILABLE: 'guildAvailable',
  GUILD_MEMBER_ADD: 'guildMemberAdd',
  GUILD_MEMBER_REMOVE: 'guildMemberRemove',
  GUILD_MEMBER_UPDATE: 'guildMemberUpdate',
  GUILD_MEMBER_AVAILABLE: 'guildMemberAvailable',
  GUILD_MEMBER_SPEAKING: 'guildMemberSpeaking',
  GUILD_MEMBERS_CHUNK: 'guildMembersChunk',
  GUILD_INTEGRATIONS_UPDATE: 'guildIntegrationsUpdate',
  GUILD_ROLE_CREATE: 'roleCreate',
  GUILD_ROLE_DELETE: 'roleDelete',
  GUILD_ROLE_UPDATE: 'roleUpdate',
  GUILD_EMOJI_CREATE: 'emojiCreate',
  GUILD_EMOJI_DELETE: 'emojiDelete',
  GUILD_EMOJI_UPDATE: 'emojiUpdate',
  GUILD_BAN_ADD: 'guildBanAdd',
  GUILD_BAN_REMOVE: 'guildBanRemove',
  CHANNEL_CREATE: 'channelCreate',
  CHANNEL_DELETE: 'channelDelete',
  CHANNEL_UPDATE: 'channelUpdate',
  CHANNEL_PINS_UPDATE: 'channelPinsUpdate',
  MESSAGE_CREATE: 'message',
  MESSAGE_DELETE: 'messageDelete',
  MESSAGE_UPDATE: 'messageUpdate',
  MESSAGE_BULK_DELETE: 'messageDeleteBulk',
  MESSAGE_REACTION_ADD: 'messageReactionAdd',
  MESSAGE_REACTION_REMOVE: 'messageReactionRemove',
  MESSAGE_REACTION_REMOVE_ALL: 'messageReactionRemoveAll',
  USER_UPDATE: 'userUpdate',
  PRESENCE_UPDATE: 'presenceUpdate',
  VOICE_SERVER_UPDATE: 'voiceServerUpdate',
  VOICE_STATE_UPDATE: 'voiceStateUpdate',
  VOICE_BROADCAST_SUBSCRIBE: 'subscribe',
  VOICE_BROADCAST_UNSUBSCRIBE: 'unsubscribe',
  TYPING_START: 'typingStart',
  TYPING_STOP: 'typingStop',
  WEBHOOKS_UPDATE: 'webhookUpdate',
  ERROR: 'error',
  WARN: 'warn',
  DEBUG: 'debug',
  SHARD_DISCONNECTED: 'shardDisconnected',
  SHARD_ERROR: 'shardError',
  SHARD_RECONNECTING: 'shardReconnecting',
  SHARD_READY: 'shardReady',
  SHARD_RESUMED: 'shardResumed',
  INVALIDATED: 'invalidated',
  RAW: 'raw',
};

exports.ShardEvents = {
  CLOSE: 'close',
  DESTROYED: 'destroyed',
  INVALID_SESSION: 'invalidSession',
  READY: 'ready',
  RESUMED: 'resumed',
};

/**
 * The type of Structure allowed to be a partial:
 * * USER
 * * CHANNEL (only affects DMChannels)
 * * GUILD_MEMBER
 * * MESSAGE
 * <warn>Partials require you to put checks in place when handling data, read the Partials topic listed in the
 * sidebar for more information.</warn>
 * @typedef {string} PartialType
 */
exports.PartialTypes = keyMirror([
  'USER',
  'CHANNEL',
  'GUILD_MEMBER',
  'MESSAGE',
]);

/**
 * The type of a websocket message event, e.g. `MESSAGE_CREATE`. Here are the available events:
 * * READY
 * * RESUMED
 * * GUILD_CREATE
 * * GUILD_DELETE
 * * GUILD_UPDATE
 * * GUILD_MEMBER_ADD
 * * GUILD_MEMBER_REMOVE
 * * GUILD_MEMBER_UPDATE
 * * GUILD_MEMBERS_CHUNK
 * * GUILD_INTEGRATIONS_UPDATE
 * * GUILD_ROLE_CREATE
 * * GUILD_ROLE_DELETE
 * * GUILD_ROLE_UPDATE
 * * GUILD_BAN_ADD
 * * GUILD_BAN_REMOVE
 * * GUILD_EMOJIS_UPDATE
 * * CHANNEL_CREATE
 * * CHANNEL_DELETE
 * * CHANNEL_UPDATE
 * * CHANNEL_PINS_UPDATE
 * * MESSAGE_CREATE
 * * MESSAGE_DELETE
 * * MESSAGE_UPDATE
 * * MESSAGE_DELETE_BULK
 * * MESSAGE_REACTION_ADD
 * * MESSAGE_REACTION_REMOVE
 * * MESSAGE_REACTION_REMOVE_ALL
 * * USER_UPDATE
 * * USER_SETTINGS_UPDATE
 * * PRESENCE_UPDATE
 * * TYPING_START
 * * VOICE_STATE_UPDATE
 * * VOICE_SERVER_UPDATE
 * * WEBHOOKS_UPDATE
 * @typedef {string} WSEventType
 */
exports.WSEvents = keyMirror([
  'READY',
  'RESUMED',
  'GUILD_CREATE',
  'GUILD_DELETE',
  'GUILD_UPDATE',
  'GUILD_MEMBER_ADD',
  'GUILD_MEMBER_REMOVE',
  'GUILD_MEMBER_UPDATE',
  'GUILD_MEMBERS_CHUNK',
  'GUILD_INTEGRATIONS_UPDATE',
  'GUILD_ROLE_CREATE',
  'GUILD_ROLE_DELETE',
  'GUILD_ROLE_UPDATE',
  'GUILD_BAN_ADD',
  'GUILD_BAN_REMOVE',
  'GUILD_EMOJIS_UPDATE',
  'CHANNEL_CREATE',
  'CHANNEL_DELETE',
  'CHANNEL_UPDATE',
  'CHANNEL_PINS_UPDATE',
  'MESSAGE_CREATE',
  'MESSAGE_DELETE',
  'MESSAGE_UPDATE',
  'MESSAGE_DELETE_BULK',
  'MESSAGE_REACTION_ADD',
  'MESSAGE_REACTION_REMOVE',
  'MESSAGE_REACTION_REMOVE_ALL',
  'USER_UPDATE',
  'PRESENCE_UPDATE',
  'TYPING_START',
  'VOICE_STATE_UPDATE',
  'VOICE_SERVER_UPDATE',
  'WEBHOOKS_UPDATE',
]);

/**
 * The type of a message, e.g. `DEFAULT`. Here are the available types:
 * * DEFAULT
 * * RECIPIENT_ADD
 * * RECIPIENT_REMOVE
 * * CALL
 * * CHANNEL_NAME_CHANGE
 * * CHANNEL_ICON_CHANGE
 * * PINS_ADD
 * * GUILD_MEMBER_JOIN
 * * USER_PREMIUM_GUILD_SUBSCRIPTION
 * * USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_1
 * * USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_2
 * * USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_3
 * @typedef {string} MessageType
 */
exports.MessageTypes = [
  'DEFAULT',
  'RECIPIENT_ADD',
  'RECIPIENT_REMOVE',
  'CALL',
  'CHANNEL_NAME_CHANGE',
  'CHANNEL_ICON_CHANGE',
  'PINS_ADD',
  'GUILD_MEMBER_JOIN',
  'USER_PREMIUM_GUILD_SUBSCRIPTION',
  'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_1',
  'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_2',
  'USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_3',
];

/**
 * The type of an activity of a users presence, e.g. `PLAYING`. Here are the available types:
 * * PLAYING
 * * STREAMING
 * * LISTENING
 * * WATCHING
 * @typedef {string} ActivityType
 */
exports.ActivityTypes = [
  'PLAYING',
  'STREAMING',
  'LISTENING',
  'WATCHING',
];

exports.ChannelTypes = {
  TEXT: 0,
  DM: 1,
  VOICE: 2,
  GROUP: 3,
  CATEGORY: 4,
  NEWS: 5,
  STORE: 6,
};

exports.ClientApplicationAssetTypes = {
  SMALL: 1,
  BIG: 2,
};

exports.Colors = {
  DEFAULT: 0x000000,
  WHITE: 0xFFFFFF,
  AQUA: 0x1ABC9C,
  GREEN: 0x2ECC71,
  BLUE: 0x3498DB,
  YELLOW: 0xFFFF00,
  PURPLE: 0x9B59B6,
  LUMINOUS_VIVID_PINK: 0xE91E63,
  GOLD: 0xF1C40F,
  ORANGE: 0xE67E22,
  RED: 0xE74C3C,
  GREY: 0x95A5A6,
  NAVY: 0x34495E,
  DARK_AQUA: 0x11806A,
  DARK_GREEN: 0x1F8B4C,
  DARK_BLUE: 0x206694,
  DARK_PURPLE: 0x71368A,
  DARK_VIVID_PINK: 0xAD1457,
  DARK_GOLD: 0xC27C0E,
  DARK_ORANGE: 0xA84300,
  DARK_RED: 0x992D22,
  DARK_GREY: 0x979C9F,
  DARKER_GREY: 0x7F8C8D,
  LIGHT_GREY: 0xBCC0C0,
  DARK_NAVY: 0x2C3E50,
  BLURPLE: 0x7289DA,
  GREYPLE: 0x99AAB5,
  DARK_BUT_NOT_BLACK: 0x2C2F33,
  NOT_QUITE_BLACK: 0x23272A,
};

/**
 * An error encountered while performing an API request. Here are the potential errors:
 * * UNKNOWN_ACCOUNT
 * * UNKNOWN_APPLICATION
 * * UNKNOWN_CHANNEL
 * * UNKNOWN_GUILD
 * * UNKNOWN_INTEGRATION
 * * UNKNOWN_INVITE
 * * UNKNOWN_MEMBER
 * * UNKNOWN_MESSAGE
 * * UNKNOWN_OVERWRITE
 * * UNKNOWN_PROVIDER
 * * UNKNOWN_ROLE
 * * UNKNOWN_TOKEN
 * * UNKNOWN_USER
 * * UNKNOWN_EMOJI
 * * UNKNOWN_WEBHOOK
 * * BOT_PROHIBITED_ENDPOINT
 * * BOT_ONLY_ENDPOINT
 * * MAXIMUM_GUILDS
 * * MAXIMUM_FRIENDS
 * * MAXIMUM_PINS
 * * MAXIMUM_ROLES
 * * MAXIMUM_REACTIONS
 * * UNAUTHORIZED
 * * MISSING_ACCESS
 * * INVALID_ACCOUNT_TYPE
 * * CANNOT_EXECUTE_ON_DM
 * * EMBED_DISABLED
 * * CANNOT_EDIT_MESSAGE_BY_OTHER
 * * CANNOT_SEND_EMPTY_MESSAGE
 * * CANNOT_MESSAGE_USER
 * * CANNOT_SEND_MESSAGES_IN_VOICE_CHANNEL
 * * CHANNEL_VERIFICATION_LEVEL_TOO_HIGH
 * * OAUTH2_APPLICATION_BOT_ABSENT
 * * MAXIMUM_OAUTH2_APPLICATIONS
 * * INVALID_OAUTH_STATE
 * * MISSING_PERMISSIONS
 * * INVALID_AUTHENTICATION_TOKEN
 * * NOTE_TOO_LONG
 * * INVALID_BULK_DELETE_QUANTITY
 * * CANNOT_PIN_MESSAGE_IN_OTHER_CHANNEL
 * * INVALID_OR_TAKEN_INVITE_CODE
 * * CANNOT_EXECUTE_ON_SYSTEM_MESSAGE
 * * BULK_DELETE_MESSAGE_TOO_OLD
 * * INVITE_ACCEPTED_TO_GUILD_NOT_CONTAINING_BOT
 * * REACTION_BLOCKED
 * @typedef {string} APIError
 */
exports.APIErrors = {
  UNKNOWN_ACCOUNT: 10001,
  UNKNOWN_APPLICATION: 10002,
  UNKNOWN_CHANNEL: 10003,
  UNKNOWN_GUILD: 10004,
  UNKNOWN_INTEGRATION: 10005,
  UNKNOWN_INVITE: 10006,
  UNKNOWN_MEMBER: 10007,
  UNKNOWN_MESSAGE: 10008,
  UNKNOWN_OVERWRITE: 10009,
  UNKNOWN_PROVIDER: 10010,
  UNKNOWN_ROLE: 10011,
  UNKNOWN_TOKEN: 10012,
  UNKNOWN_USER: 10013,
  UNKNOWN_EMOJI: 10014,
  UNKNOWN_WEBHOOK: 10015,
  BOT_PROHIBITED_ENDPOINT: 20001,
  BOT_ONLY_ENDPOINT: 20002,
  MAXIMUM_GUILDS: 30001,
  MAXIMUM_FRIENDS: 30002,
  MAXIMUM_PINS: 30003,
  MAXIMUM_ROLES: 30005,
  MAXIMUM_REACTIONS: 30010,
  UNAUTHORIZED: 40001,
  MISSING_ACCESS: 50001,
  INVALID_ACCOUNT_TYPE: 50002,
  CANNOT_EXECUTE_ON_DM: 50003,
  EMBED_DISABLED: 50004,
  CANNOT_EDIT_MESSAGE_BY_OTHER: 50005,
  CANNOT_SEND_EMPTY_MESSAGE: 50006,
  CANNOT_MESSAGE_USER: 50007,
  CANNOT_SEND_MESSAGES_IN_VOICE_CHANNEL: 50008,
  CHANNEL_VERIFICATION_LEVEL_TOO_HIGH: 50009,
  OAUTH2_APPLICATION_BOT_ABSENT: 50010,
  MAXIMUM_OAUTH2_APPLICATIONS: 50011,
  INVALID_OAUTH_STATE: 50012,
  MISSING_PERMISSIONS: 50013,
  INVALID_AUTHENTICATION_TOKEN: 50014,
  NOTE_TOO_LONG: 50015,
  INVALID_BULK_DELETE_QUANTITY: 50016,
  CANNOT_PIN_MESSAGE_IN_OTHER_CHANNEL: 50019,
  INVALID_OR_TAKEN_INVITE_CODE: 50020,
  CANNOT_EXECUTE_ON_SYSTEM_MESSAGE: 50021,
  BULK_DELETE_MESSAGE_TOO_OLD: 50034,
  INVITE_ACCEPTED_TO_GUILD_NOT_CONTAINING_BOT: 50036,
  REACTION_BLOCKED: 90001,
};

/**
 * The value set for a guild's default message notifications, e.g. `ALL`. Here are the available types:
 * * ALL
 * * MENTIONS
 * @typedef {string} DefaultMessageNotifications
 */
exports.DefaultMessageNotifications = [
  'ALL',
  'MENTIONS',
];

/**
 * The value set for a team members's membership state:
 * * INVITED
 * * ACCEPTED
 * @typedef {string} MembershipStates
 */
exports.MembershipStates = [
  // They start at 1
  null,
  'INVITED',
  'ACCEPTED',
];

function keyMirror(arr) {
  let tmp = Object.create(null);
  for (const value of arr) tmp[value] = value;
  return tmp;
}