feat(api): added multiple things. see below

- Added ratelimiting
 - Rewrote api handling and take advantage of bucket hash
 - Removed the
word "api" in api client options

BREAKING CHANGE: Removed the word "api" in client options

.eslintrc

@@ -66,6 +66,12 @@
 			"always"
 		],
 		"no-var": "error",
+		"eqeqeq": "error",
+		"no-eq-null": "error",
+		"arrow-parens": [
+			"error",
+			"always"
+		],
 		// TypeScript Rules
 		"@typescript-eslint/naming-convention": [
 			"error",
@@ -127,8 +133,8 @@
 						"builtin",
 						"external",
 						"internal",
-						"sibling",
 						"parent",
+						"sibling",
 						"index",
 						"object",
 						"type"

src/api/apiClient.ts

@@ -1,11 +1,11 @@
-import { ApiHandler } from './apiHandler';
+import { ApiManager } from './apiManager';
 
 import type { Client } from '../client/client';
 import type { IRequestOptions } from '../utils/types';
 
 export class ApiClient {
 	public client: Client;
-	public handler: ApiHandler;
+	public manager: ApiManager;
 
 	private _token: string;
 
@@ -13,11 +13,11 @@ export class ApiClient {
 		this.client = client;
 		this._token = token;
 
-		this.handler = new ApiHandler(this.client, this._token);
+		this.manager = new ApiManager(this.client, this._token);
 	}
 
-	public async delete<T>(options: IRequestOptions): Promise<T | null> {
+	public async delete<T>(options: IRequestOptions): Promise<T> {
-		return this.handler.makeRequest<T>({
+		return this.manager.createRequest<T>({
 			method: 'DELETE',
 			body: options.body,
 			headers: options.headers,
@@ -28,8 +28,8 @@ export class ApiClient {
 		});
 	}
 
-	public async get<T>(options: IRequestOptions): Promise<T | null> {
+	public async get<T>(options: IRequestOptions): Promise<T> {
-		return this.handler.makeRequest<T>({
+		return this.manager.createRequest<T>({
 			method: 'GET',
 			body: options.body,
 			headers: options.headers,
@@ -40,8 +40,8 @@ export class ApiClient {
 		});
 	}
 
-	public async patch<T>(options: IRequestOptions): Promise<T | null> {
+	public async patch<T>(options: IRequestOptions): Promise<T> {
-		return this.handler.makeRequest<T>({
+		return this.manager.createRequest<T>({
 			method: 'PATCH',
 			body: options.body,
 			headers: options.headers,
@@ -52,8 +52,8 @@ export class ApiClient {
 		});
 	}
 
-	public async post<T>(options: IRequestOptions): Promise<T | null> {
+	public async post<T>(options: IRequestOptions): Promise<T> {
-		return this.handler.makeRequest<T>({
+		return this.manager.createRequest<T>({
 			method: 'POST',
 			body: options.body,
 			headers: options.headers,
@@ -64,8 +64,8 @@ export class ApiClient {
 		});
 	}
 
-	public async put<T>(options: IRequestOptions): Promise<T | null> {
+	public async put<T>(options: IRequestOptions): Promise<T> {
-		return this.handler.makeRequest<T>({
+		return this.manager.createRequest<T>({
 			method: 'PUT',
 			body: options.body,
 			headers: options.headers,

src/api/apiHandler.ts

@@ -3,68 +3,134 @@ import { queue, QueueObject } from 'async';
 import FormData from 'form-data';
 import fetch from 'node-fetch';
 
+import type { ApiManager } from './apiManager';
 import type { Client } from '../client/client';
-import type { IMakeRequestOptions } from '../utils/types';
+import type { IMakeRequestOptions, IRequestOptions, IRouteIdentifier } from '../utils/types';
+import { sleep } from '../utils/sleep';
 
 export class ApiHandler {
 	public client: Client;
+	public hash: string;
+	public id: string;
+	public limit: number;
+	public majorParameter: string;
+	public manager: ApiManager;
 	public queue: QueueObject<unknown>;
+	public remaining: number;
+	public reset: number;
 
 	private _token: string;
 
-	public constructor(client: Client, token: string) {
+	public constructor(client: Client, manager: ApiManager, token: string, hash: string, majorParameter: string) {
 		this.client = client;
 		this._token = token;
 
-		this.queue = queue(async (requestOptions: IMakeRequestOptions, callback) => {
+		this.hash = hash;
-			callback(await this.makeRequest(requestOptions));
+		this.id = `${hash}:${majorParameter}`;
+		this.limit = -1;
+		this.majorParameter = majorParameter;
+		this.manager = manager;
+		this.queue = queue(async (task: { routeId: IRouteIdentifier, requestOptions: IMakeRequestOptions; }, callback) => {
+			if (this.limited) await sleep(this.timeToReset);
+			callback(await this.makeRequest(task.routeId, task.requestOptions));
 		});
+		this.remaining = -1;
+		this.reset = -1;
 	}
 
-	public get baseApiUrl(): string {
+	public async makeRequest<T>(routeId: IRouteIdentifier, options: IMakeRequestOptions, retries = 0): Promise<T> {
-		return `${this.client.options.api.apiUrl}/v${this.client.options.api.apiVersion}`;
-	}
-
-	public async makeRequest<T>(options: IMakeRequestOptions): Promise<T | null> {
 		const headers: Map<string, string> = new Map();
 
 		if (options.headers) for (const prop in options.headers) headers.set(prop, options.headers[prop]!);
-
-		if (options.requireAuth) headers.set('Authorization', `Bot ${this._token}`);
 		if (options.reason) headers.set('X-Audit-Log-Reason', encodeURIComponent(options.reason));
+		if (options.requireAuth) headers.set('Authorization', `Bot ${this._token}`);
 
 		let body: FormData | string;
 		if (options.files && options.files.length) {
 			body = new FormData();
-			for (const file of options.files) if (file && file.file) body.append(file.name, file.file, file.name);
+
 			if (options.body) body.append('payload_json', JSON.stringify(options.body));
+
+			for (const file of options.files) if (file && file.file) body.append(file.name, file.file, file.name);
 		} else if (options.body) {
 			body = JSON.stringify(options.body);
 			headers.set('Content-Type', 'application/json');
 		}
 
 		const controller = new AbortController();
-		const timeout = setTimeout(() => controller.abort(), this.client.options.api.apiRequestTimeout);
+		const timeout = setTimeout(() => controller.abort(), this.client.options.api.requestTimeout);
 
 		try {
 			// eslint-disable-next-line @typescript-eslint/ban-ts-comment
 			// @ts-ignore
 			const res = await fetch(`${this.baseApiUrl}${options.path}`, { method: options.method, headers, signal: controller.signal, body });
 
-			// TODO: handle Ratelimits
+			const bucketHash = res.headers.get('x-ratelimit-bucket');
+			const globalRatelimit = res.headers.get('x-ratelimit-global');
+			const limit = res.headers.get('x-ratelimit-limit');
+			const remaining = res.headers.get('x-ratelimit-remaining');
+			const reset = res.headers.get('x-ratelimit-reset');
+			const resetAfter = res.headers.get('x-ratelimit-reset-after');
+			const retry = res.headers.get('retry-after');
+			const serverDate = res.headers.get('date');
+
+			if (!resetAfter && options.path.includes('reactions')) {
+				this.reset = new Date(Number(serverDate)).getTime() - (new Date(Number(serverDate)).getTime() - Date.now()) + 250;
+			}
+
+			let retryAfter = 0;
+
+			this.limit = limit !== null ? Number(limit) : Number.MAX_VALUE;
+			this.remaining = remaining !== null ? Number(remaining) : Number.MAX_VALUE;
+			this.reset = reset || resetAfter
+				? Number(reset) * 1000 + Date.now() + this.client.options.api.offset
+				: Date.now();
+
+			if (retry !== null)
+				retryAfter = retry ? Number(retry) * 1000 : -1;
+
+			if (bucketHash !== null && bucketHash !== this.hash) {
+				if (!this.manager.hashes.has(`${options.method}-${routeId.route}`))
+					this.manager.hashes.set(`${options.method}-${routeId.route}`, bucketHash);
+			}
+
+			if (globalRatelimit) {
+				this.manager.globalTimeout = true;
+				this.manager.globalReset = Date.now() + retryAfter;
+			}
 
 			// TODO: Handle non-2xx responses (Will slowly add them as i get them)
 			if (res.ok) {
 				return res.json() as unknown as T;
+			} else if (res.status === 429) {
+				await sleep(retryAfter);
+				return this.makeRequest(routeId, options, retries++);
 			} else {
-				return null;
+				throw new Error('An unknown status code was returned!');
 			}
 		} finally {
 			clearTimeout(timeout);
 		}
 	}
 
-	public async push<T>(requestOptions: IMakeRequestOptions): Promise<T> {
+	public async push<T>(routeId: IRouteIdentifier, requestOptions: IRequestOptions): Promise<T> {
-		return await this.queue.pushAsync<T>(requestOptions);
+		return await this.queue.pushAsync<T>({ routeId, requestOptions });
+	}
+
+	public get baseApiUrl(): string {
+		return `${this.client.options.api.url}/v${this.client.options.api.version}`;
+	}
+
+	public get inactive(): boolean {
+		return this.queue.length() === 0 && !this.limited;
+	}
+
+	public get limited(): boolean {
+		if (typeof this.manager.globalTimeout === 'number') return this.manager.globalTimeout <= 0 && Date.now() < this.manager.globalReset;
+		else return this.remaining <= 0 && Date.now() < this.reset;
+	}
+
+	public get timeToReset(): number {
+		return this.reset - Date.now();
 	}
 }

src/api/apiManager.ts

@@ -0,0 +1,64 @@
+import { ApiHandler } from './apiHandler';
+import { Snowflake } from '../utils/snowflake';
+
+import type { Client } from '../client/client';
+import type { ApiMethods, IMakeRequestOptions, IRouteIdentifier } from '../utils/types';
+
+export class ApiManager {
+	public client: Client;
+	public globalReset: number;
+	public globalTimeout: boolean | null;
+	public hashes: Map<string, string>;
+	public queues: Map<string, ApiHandler>;
+
+	private _token: string;
+
+	public constructor(client: Client, token: string) {
+		this.client = client;
+		this._token = token;
+
+		this.globalReset = 0;
+		this.globalTimeout = null;
+		this.hashes = new Map();
+		this.queues = new Map();
+	}
+
+	public async createRequest<T>(requestOptions: IMakeRequestOptions): Promise<T> {
+		const routeId = this.generateRouteIdentifiers(requestOptions.path, requestOptions.method);
+		let hash = this.hashes.get(`${requestOptions.method}-${routeId.route}`);
+
+		if (!hash) hash = `UnknownHash(${routeId.route})`;
+
+		let queue = this.queues.get(`${hash}:${routeId.majorParameter}`);
+
+		if (queue === null) {
+			const apiHandler = new ApiHandler(this.client, this, this._token, hash, routeId.majorParameter);
+			this.queues.set(apiHandler.id, apiHandler);
+
+			queue = this.queues.get(`${hash}:${routeId.majorParameter}`);
+		}
+
+		return await queue!.push<T>(routeId, requestOptions);
+	}
+
+	public generateRouteIdentifiers(endpoint: string, method: ApiMethods): IRouteIdentifier {
+		const result = new RegExp('^/(?:channels|guilds|webhooks)/(d{16,19})').exec(endpoint);
+		const majorParameter = result && result.length !== 0 ? result[1]!.toString() : 'global';
+		const baseRoute = endpoint.replace(new RegExp('d{16,19}'), ':id');
+
+		let exceptions = '';
+
+		if (method === 'DELETE' && baseRoute === '/channels/:id/messages/:id') {
+			const id = new RegExp('d{16,19}$').exec(endpoint);
+			const snowflake = Snowflake.fromSnowflake(id![0]!);
+
+			if (Date.now() - (new Date(snowflake).getTime() / 1000) > 1000 * 60 * 60 * 24 * 14)
+				exceptions += '[Delete Old Message]';
+		}
+
+		return {
+			route: `${baseRoute}${exceptions}`,
+			majorParameter,
+		};
+	}
+}

src/index.ts

@@ -12,4 +12,3 @@ export {
 	IMakeRequestOptions,
 	Primitives,
 } from './utils/types';
-export { } from './utils/utils';

src/utils/defaults.ts

@@ -3,9 +3,12 @@ import type { IDefaultOptions } from './types';
 export const defaults: IDefaultOptions = {
 	clientOptions: {
 		api: {
-			apiRequestTimeout: 5000,
+			offset: 500,
-			apiUrl: 'https://discord.com/api',
+			requestTimeout: 5000,
-			apiVersion: 9,
+			retryLimit: 5,
+			sweepInterval: 60000,
+			url: 'https://discord.com/api',
+			version: 9,
 		},
 	},
 };

src/utils/sleep.ts

@@ -0,0 +1,5 @@
+export const sleep = async (ms: number): Promise<void> => {
+	return new Promise((res) => {
+		setTimeout(() => res(), ms);
+	});
+};

src/utils/snowflake.ts

@@ -0,0 +1,9 @@
+export class Snowflake {
+	public static fromSnowflake(value: string): number {
+		return new Date((Number(value) >> 22) + 1420070400000).getTime() / 1000;
+	}
+
+	public static toSnowflake(value: number): string {
+		return (((new Date(value).getTime() / 1000) - 1420070400000) << 22).toString();
+	}
+}

src/utils/types.ts

@@ -1,8 +1,11 @@
 // Interfaces
 export interface IApiClientOptions {
-	apiUrl?: string;
+	offset?: number;
-	apiRequestTimeout?: number;
+	requestTimeout?: number;
-	apiVersion?: number;
+	retryLimit?: number;
+	sweepInterval?: number;
+	url?: string;
+	version?: number;
 }
 
 export interface IClientOptions {
@@ -23,48 +26,54 @@ export interface IMakeRequestOptions extends IRequestOptions {
 }
 
 export interface IMessageEmbed {
-	description: string;
-	title?: string;
-	type?: 'rich';
-	url?: string;
-	color?: number;
-	timestamp?: number;
 	author?: { name?: string, url?: string };
-	fields?: { name: string, value: string, inline?: boolean }[];
+	color?: number;
-	footer?: { text?: string, icon_url?: string };
+	description?: string;
+	fields?: { inline?: boolean, name: string, value: string }[];
+	footer?: { icon_url?: string, text?: string };
 	image?: { url?: string };
 	provider?: { name?: string, url?: string };
+	timestamp?: number;
+	title?: string;
 	thumbnail?: { url?: string };
+	type?: 'rich';
+	url?: string;
 	video?: { url?: string };
 }
 
 export interface IRequestOptions {
+	body?: unknown;
+	files?: IFile[];
+	headers?: Record<string, string>;
 	path: string;
 	reason?: string;
 	requireAuth?: boolean;
-	body?: unknown;
+}
-	headers?: Record<string, string>;
+
-	files?: IFile[];
+export interface IRouteIdentifier {
+	majorParameter: string;
+	route: string;
 }
 
 // Api Rest Request Interfaces
 // TODO: Add message components
 export interface IApiCreateMessage {
-	content?: string;
+	allowed_mentions?: {
-	tts?: boolean;
+		parse?: 'everyone' | 'roles' | 'users'[];
-	embeds?: IMessageEmbed[];
+		replied_user?: boolean;
-	allowed_mentions: {
 		roles?: string[];
 		users?: string[];
-		replied_user?: boolean;
-		parse?: 'everyone' | 'roles' | 'users'[];
 	};
-	message_reference: {
+	content?: string;
+	embeds?: IMessageEmbed[];
+	files?: IFile[];
+	message_reference?: {
 		channel_id?: string;
+		fail_if_not_exists?: boolean;
 		guild_id?: string;
 		message_id?: string;
-		fail_if_not_exists?: boolean;
 	};
+	tts?: boolean;
 }
 
 // Enums
@@ -72,7 +81,7 @@ export interface IApiCreateMessage {
 // Type Aliases
 export type ApiMethods = 'DELETE' | 'GET' | 'PATCH' | 'POST' | 'PUT' ;
 // eslint-disable-next-line @typescript-eslint/ban-types
-export type Builtin = Primitives | Function | Date | Error | RegExp;
+export type Builtin = Date | Error | Function | Primitives | RegExp;
 export type DeepRequired<T> = T extends Builtin
 	? NonNullable<T>
 	: T extends Map<infer K, infer V>
@@ -93,4 +102,4 @@ export type DeepRequired<T> = T extends Builtin
 	: T extends {}
 	? { [K in keyof T]-?: DeepRequired<T[K]> }
 	: NonNullable<T>;
-export type Primitives = string | number | boolean | bigint | symbol | undefined | null;
+export type Primitives = bigint | boolean | null | number | string | symbol | undefined;