Files
discord.js/src/client/ClientDataResolver.js
2017-02-22 20:11:11 +00:00

404 lines
12 KiB
JavaScript

const path = require('path');
const fs = require('fs');
const request = require('superagent');
const Constants = require('../util/Constants');
const convertToBuffer = require('../util/Util').convertToBuffer;
const User = require('../structures/User');
const Message = require('../structures/Message');
const Guild = require('../structures/Guild');
const Channel = require('../structures/Channel');
const GuildMember = require('../structures/GuildMember');
const Emoji = require('../structures/Emoji');
const ReactionEmoji = require('../structures/ReactionEmoji');
/**
* The DataResolver identifies different objects and tries to resolve a specific piece of information from them, e.g.
* extracting a User from a Message object.
* @private
*/
class ClientDataResolver {
/**
* @param {Client} client The client the resolver is for
*/
constructor(client) {
this.client = client;
}
/**
* Data that resolves to give a User object. This can be:
* * A User object
* * A user ID
* * A Message object (resolves to the message author)
* * A Guild object (owner of the guild)
* * A GuildMember object
* @typedef {User|Snowflake|Message|Guild|GuildMember} UserResolvable
*/
/**
* Resolves a UserResolvable to a User object
* @param {UserResolvable} user The UserResolvable to identify
* @returns {?User}
*/
resolveUser(user) {
if (user instanceof User) return user;
if (typeof user === 'string') return this.client.users.get(user) || null;
if (user instanceof GuildMember) return user.user;
if (user instanceof Message) return user.author;
if (user instanceof Guild) return user.owner;
return null;
}
/**
* Resolves a UserResolvable to a user ID string
* @param {UserResolvable} user The UserResolvable to identify
* @returns {?Snowflake}
*/
resolveUserID(user) {
if (user instanceof User || user instanceof GuildMember) return user.id;
if (typeof user === 'string') return user || null;
if (user instanceof Message) return user.author.id;
if (user instanceof Guild) return user.ownerID;
return null;
}
/**
* Data that resolves to give a Guild object. This can be:
* * A Guild object
* * A Guild ID
* @typedef {Guild|Snowflake} GuildResolvable
*/
/**
* Resolves a GuildResolvable to a Guild object
* @param {GuildResolvable} guild The GuildResolvable to identify
* @returns {?Guild}
*/
resolveGuild(guild) {
if (guild instanceof Guild) return guild;
if (typeof guild === 'string') return this.client.guilds.get(guild) || null;
return null;
}
/**
* Data that resolves to give a GuildMember object. This can be:
* * A GuildMember object
* * A User object
* @typedef {Guild} GuildMemberResolvable
*/
/**
* Resolves a GuildMemberResolvable to a GuildMember object
* @param {GuildResolvable} guild The guild that the member is part of
* @param {UserResolvable} user The user that is part of the guild
* @returns {?GuildMember}
*/
resolveGuildMember(guild, user) {
if (user instanceof GuildMember) return user;
guild = this.resolveGuild(guild);
user = this.resolveUser(user);
if (!guild || !user) return null;
return guild.members.get(user.id) || null;
}
/**
* Data that can be resolved to give a Channel. This can be:
* * A Channel object
* * A Message object (the channel the message was sent in)
* * A Guild object (the #general channel)
* * A channel ID
* @typedef {Channel|Guild|Message|Snowflake} ChannelResolvable
*/
/**
* Resolves a ChannelResolvable to a Channel object
* @param {ChannelResolvable} channel The channel resolvable to resolve
* @returns {?Channel}
*/
resolveChannel(channel) {
if (channel instanceof Channel) return channel;
if (channel instanceof Message) return channel.channel;
if (channel instanceof Guild) return channel.channels.get(channel.id) || null;
if (typeof channel === 'string') return this.client.channels.get(channel) || null;
return null;
}
/**
* Resolves a ChannelResolvable to a Channel object
* @param {ChannelResolvable} channel The channel resolvable to resolve
* @returns {?Snowflake}
*/
resolveChannelID(channel) {
if (channel instanceof Channel) return channel.id;
if (typeof channel === 'string') return channel;
if (channel instanceof Message) return channel.channel.id;
if (channel instanceof Guild) return channel.defaultChannel.id;
return null;
}
/**
* Data that can be resolved to give an invite code. This can be:
* * An invite code
* * An invite URL
* @typedef {string} InviteResolvable
*/
/**
* Resolves InviteResolvable to an invite code
* @param {InviteResolvable} data The invite resolvable to resolve
* @returns {string}
*/
resolveInviteCode(data) {
const inviteRegex = /discord(?:app)?\.(?:gg|com\/invite)\/([a-z0-9]{5})/i;
const match = inviteRegex.exec(data);
if (match && match[1]) return match[1];
return data;
}
/**
* Data that can be resolved to give a permission number. This can be:
* * A string
* * A permission number
*
* Possible strings:
* ```js
* [
* 'CREATE_INSTANT_INVITE',
* 'KICK_MEMBERS',
* 'BAN_MEMBERS',
* 'ADMINISTRATOR',
* 'MANAGE_CHANNELS',
* 'MANAGE_GUILD',
* 'ADD_REACTIONS', // add reactions to messages
* 'READ_MESSAGES',
* 'SEND_MESSAGES',
* 'SEND_TTS_MESSAGES',
* 'MANAGE_MESSAGES',
* 'EMBED_LINKS',
* 'ATTACH_FILES',
* 'READ_MESSAGE_HISTORY',
* 'MENTION_EVERYONE',
* 'EXTERNAL_EMOJIS', // use external emojis
* 'CONNECT', // connect to voice
* 'SPEAK', // speak on voice
* 'MUTE_MEMBERS', // globally mute members on voice
* 'DEAFEN_MEMBERS', // globally deafen members on voice
* 'MOVE_MEMBERS', // move member's voice channels
* 'USE_VAD', // use voice activity detection
* 'CHANGE_NICKNAME',
* 'MANAGE_NICKNAMES', // change nicknames of others
* 'MANAGE_ROLES_OR_PERMISSIONS',
* 'MANAGE_WEBHOOKS',
* 'MANAGE_EMOJIS'
* ]
* ```
* @typedef {string|number} PermissionResolvable
*/
/**
* Resolves a PermissionResolvable to a permission number
* @param {PermissionResolvable} permission The permission resolvable to resolve
* @returns {number}
*/
resolvePermission(permission) {
if (typeof permission === 'string') permission = Constants.PermissionFlags[permission];
if (typeof permission !== 'number' || permission < 1) throw new Error(Constants.Errors.NOT_A_PERMISSION);
return permission;
}
/**
* Turn an array of permissions into a valid Discord permission bitfield
* @param {PermissionResolvable[]} permissions Permissions to resolve together
* @returns {number}
*/
resolvePermissions(permissions) {
let bitfield = 0;
for (const permission of permissions) bitfield |= this.resolvePermission(permission);
return bitfield;
}
hasPermission(bitfield, name, explicit = false) {
const permission = this.resolvePermission(name);
if (!explicit && (bitfield & Constants.PermissionFlags.ADMINISTRATOR) > 0) return true;
return (bitfield & permission) > 0;
}
serializePermissions(bitfield) {
const serializedPermissions = {};
for (const name in Constants.PermissionFlags) {
serializedPermissions[name] = this.hasPermission(bitfield, name);
}
return serializedPermissions;
}
/**
* Data that can be resolved to give a string. This can be:
* * A string
* * An array (joined with a new line delimiter to give a string)
* * Any value
* @typedef {string|Array|*} StringResolvable
*/
/**
* Resolves a StringResolvable to a string
* @param {StringResolvable} data The string resolvable to resolve
* @returns {string}
*/
resolveString(data) {
if (typeof data === 'string') return data;
if (data instanceof Array) return data.join('\n');
return String(data);
}
/**
* Data that resolves to give a Base64 string, typically for image uploading. This can be:
* * A Buffer
* * A base64 string
* @typedef {Buffer|string} Base64Resolvable
*/
/**
* Resolves a Base64Resolvable to a Base 64 image
* @param {Base64Resolvable} data The base 64 resolvable you want to resolve
* @returns {?string}
*/
resolveBase64(data) {
if (data instanceof Buffer) return `data:image/jpg;base64,${data.toString('base64')}`;
return data;
}
/**
* Data that can be resolved to give a Buffer. This can be:
* * A Buffer
* * The path to a local file
* * A URL
* @typedef {string|Buffer} BufferResolvable
*/
/**
* Resolves a BufferResolvable to a Buffer
* @param {BufferResolvable} resource The buffer resolvable to resolve
* @returns {Promise<Buffer>}
*/
resolveBuffer(resource) {
if (resource instanceof Buffer) return Promise.resolve(resource);
if (this.client.browser && resource instanceof ArrayBuffer) return Promise.resolve(convertToBuffer(resource));
if (typeof resource === 'string') {
return new Promise((resolve, reject) => {
if (/^https?:\/\//.test(resource)) {
const req = request.get(resource).set('Content-Type', 'blob');
if (this.client.browser) req.responseType('arraybuffer');
req.end((err, res) => {
if (err) return reject(err);
if (this.client.browser) return resolve(convertToBuffer(res.xhr.response));
if (!(res.body instanceof Buffer)) return reject(new TypeError('The response body isn\'t a Buffer.'));
return resolve(res.body);
});
} else {
const file = path.resolve(resource);
fs.stat(file, (err, stats) => {
if (err) return reject(err);
if (!stats || !stats.isFile()) return reject(new Error(`The file could not be found: ${file}`));
fs.readFile(file, (err2, data) => {
if (err2) reject(err2); else resolve(data);
});
return null;
});
}
});
}
return Promise.reject(new TypeError('The resource must be a string or Buffer.'));
}
/**
* Data that can be resolved to give an emoji identifier. This can be:
* * A string
* * An Emoji
* * A ReactionEmoji
* @typedef {string|Emoji|ReactionEmoji} EmojiIdentifierResolvable
*/
/**
* Resolves an EmojiResolvable to an emoji identifier
* @param {EmojiIdentifierResolvable} emoji The emoji resolvable to resolve
* @returns {string}
*/
resolveEmojiIdentifier(emoji) {
if (emoji instanceof Emoji || emoji instanceof ReactionEmoji) return emoji.identifier;
if (typeof emoji === 'string') {
if (!emoji.includes('%')) return encodeURIComponent(emoji);
}
return null;
}
/**
* Can be a Hex Literal, Hex String, Number, RGB Array, or one of the following
* ```
* [
* 'DEFAULT',
* 'AQUA',
* 'GREEN',
* 'BLUE',
* 'PURPLE',
* 'GOLD',
* 'ORANGE',
* 'RED',
* 'GREY',
* 'DARKER_GREY',
* 'NAVY',
* 'DARK_AQUA',
* 'DARK_GREEN',
* 'DARK_BLUE',
* 'DARK_PURPLE',
* 'DARK_GOLD',
* 'DARK_ORANGE',
* 'DARK_RED',
* 'DARK_GREY',
* 'LIGHT_GREY',
* 'DARK_NAVY',
* 'RANDOM',
* ]
* ```
* or something like
* ```
* [255, 0, 255]
* ```
* for purple
* @typedef {String|number|Array} ColorResolvable
*/
/**
* Resolves a ColorResolvable into a color number
* @param {ColorResolvable} color Color to resolve
* @returns {number} A color
*/
static resolveColor(color) {
if (typeof color === 'string') {
if (color === 'RANDOM') return Math.floor(Math.random() * (0xFFFFFF + 1));
color = Constants.Colors[color] || parseInt(color.replace('#', ''), 16);
} else if (color instanceof Array) {
color = (color[0] << 16) + (color[1] << 8) + color[2];
}
if (color < 0 || color > 0xFFFFFF) {
throw new RangeError('Color must be within the range 0 - 16777215 (0xFFFFFF).');
} else if (color && isNaN(color)) {
throw new TypeError('Unable to convert color to a number.');
}
return color;
}
/**
* @param {ColorResolvable} color Color to resolve
* @returns {number} A color
*/
resolveColor(color) {
return this.constructor.resolveColor(color);
}
}
module.exports = ClientDataResolver;