commit c29e8a707df624aa1162538a2dfe751fb46dee21 · dunkirk.sh/cachet

+105

src/slack.d.ts

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       /**

     

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        * Response from Slack's users.info API endpoint

     

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        */

     

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       export interface SlackUserInfoResponse {

     

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         /** Whether the request was successful */

     

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         ok: boolean;

     

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         /** The user information if found */

     

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         user?: SlackUser;

     

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         /** Error message if request failed */

     

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         error?: string;

     

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       }

     

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       /**

     

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        * Response from Slack's emoji.list API endpoint

     

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        */

     

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       export interface SlackEmojiListResponse {

     

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         /** Whether the request was successful */

     

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         ok: boolean;

     

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         /** Map of emoji names to their image URLs */

     

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         emoji?: Record<string, string>;

     

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         /** Error message if request failed */

     

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         error?: string;

     

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       }

     

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       /**

     

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        * A Slack user's information

     

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        */

     

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       export interface SlackUser {

     

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         /** Unique identifier for the user */

     

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         id: string;

     

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         /** ID of the team the user belongs to */

     

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         team_id: string;

     

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         /** Username */

     

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         name: string;

     

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         /** Whether the user has been deactivated */

     

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         deleted: boolean;

     

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         /** User's color preference */

     

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         color: string;

     

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         /** User's full name */

     

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         real_name: string;

     

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         /** User's timezone identifier */

     

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         tz: string;

     

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         /** Display label for the timezone */

     

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         tz_label: string;

     

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         /** Timezone offset in seconds */

     

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         tz_offset: number;

     

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         /** Extended profile information */

     

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         profile: SlackUserProfile;

     

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         /** Whether user is a workspace admin */

     

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         is_admin: boolean;

     

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         /** Whether user is a workspace owner */

     

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         is_owner: boolean;

     

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         /** Whether user is the primary workspace owner */

     

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         is_primary_owner: boolean;

     

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         /** Whether user has restricted access */

     

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         is_restricted: boolean;

     

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         /** Whether user has ultra restricted access */

     

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         is_ultra_restricted: boolean;

     

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         /** Whether user is a bot */

     

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         is_bot: boolean;

     

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         /** Timestamp of last update to user info */

     

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         updated: number;

     

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         /** Whether user is an app user */

     

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         is_app_user: boolean;

     

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         /** Whether user has two-factor auth enabled */

     

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         has_2fa: boolean;

     

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       }

     

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       /**

     

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        * Extended profile information for a Slack user

     

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        */

     

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       export interface SlackUserProfile {

     

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         /** Hash of user's profile picture */

     

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         avatar_hash: string;

     

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         /** User's status text */

     

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         status_text: string;

     

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         /** Emoji shown in user's status */

     

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         status_emoji: string;

     

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         /** User's full name */

     

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         real_name: string;

     

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         /** User's display name */

     

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         display_name: string;

     

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         /** Normalized version of real name */

     

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         real_name_normalized: string;

     

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         /** Normalized version of display name */

     

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         display_name_normalized: string;

     

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         /** User's email address */

     

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         email: string;

     

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         /** Original size profile image URL */

     

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         image_original: string;

     

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         /** 24x24 profile image URL */

     

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         image_24: string;

     

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         /** 32x32 profile image URL */

     

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         image_32: string;

     

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         /** 48x48 profile image URL */

     

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         image_48: string;

     

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         /** 72x72 profile image URL */

     

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         image_72: string;

     

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         /** 192x192 profile image URL */

     

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         image_192: string;

     

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         /** 512x512 profile image URL */

     

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         image_512: string;

     

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         /** Team ID the profile belongs to */

     

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         team: string;

     

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       }

+140

src/slackWrapper.ts

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       import { createHmac, timingSafeEqual } from "node:crypto";

     

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       import type {

     

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         SlackEmojiListResponse,

     

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         SlackUser,

     

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         SlackUserInfoResponse,

     

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       } from "./slack";

     

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       /**

     

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        * Interface for mapping emoji names to their URLs

     

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        */

     

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       interface SlackEmoji {

     

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         [key: string]: string;

     

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       }

     

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       /**

     

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        * Configuration options for initializing the SlackWrapper

     

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        */

     

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       interface SlackConfig {

     

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         /** Slack signing secret for request verification */

     

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         signingSecret?: string;

     

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         /** Slack bot user OAuth token */

     

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         botToken?: string;

     

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       }

     

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       /**

     

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        * Wrapper class for Slack API interactions

     

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        */

     

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       class SlackWrapper {

     

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         private signingSecret: string;

     

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         private botToken: string;

     

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         /**

     

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          * Creates a new SlackWrapper instance

     

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          * @param config Optional configuration object containing signing secret and bot token

     

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          * @throws Error if required credentials are missing

     

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          */

     

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         constructor(config?: SlackConfig) {

     

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           this.signingSecret =

     

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             config?.signingSecret || process.env.SLACK_SIGNING_SECRET || "";

     

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           this.botToken = config?.botToken || process.env.SLACK_BOT_TOKEN || "";

     

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           const missingFields = [];

     

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           if (!this.signingSecret) missingFields.push("signing secret");

     

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           if (!this.botToken) missingFields.push("bot token");

     

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           if (missingFields.length > 0) {

     

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             throw new Error(

     

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               `Missing required Slack credentials: ${missingFields.join(" and ")} either pass them to the class or set them as environment variables`,

     

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             );

     

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           }

     

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         }

     

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         /**

     

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          * Tests authentication with current credentials

     

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          * @returns Promise resolving to true if auth is valid

     

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          * @throws Error if authentication fails

     

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          */

     

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         async testAuth(): Promise<boolean> {

     

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           const response = await fetch("https://slack.com/api/auth.test", {

     

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             headers: {

     

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               Authorization: `Bearer ${this.botToken}`,

     

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               "Content-Type": "application/json",

     

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             },

     

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           });

     

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           const data = await response.json();

     

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           if (!data.ok) {

     

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             throw new Error(`Authentication failed: ${data.error}`);

     

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           }

     

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           return true;

     

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         }

     

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         /**

     

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          * Retrieves information about a Slack user

     

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          * @param userId The ID of the user to look up

     

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          * @returns Promise resolving to the user's information

     

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          * @throws Error if the API request fails

     

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          */

     

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         async getUserInfo(userId: string): Promise<SlackUser> {

     

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           const response = await fetch(

     

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             `https://slack.com/api/users.info?user=${userId}`,

     

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             {

     

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               method: "POST",

     

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               headers: {

     

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                 Authorization: `Bearer ${this.botToken}`,

     

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                 "Content-Type": "application/json",

     

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               },

     

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               body: JSON.stringify({ user: userId }),

     

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             },

     

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           );

     

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           const data: SlackUserInfoResponse = await response.json();

     

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           if ((!data.ok && data.error !== "user_not_found") || !data.user) {

     

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             throw new Error(data.error);

     

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           }

     

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           return data.user;

     

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         }

     

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         /**

     

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          * Retrieves the list of custom emojis from the Slack workspace

     

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          * @returns Promise resolving to the emoji list

     

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          * @throws Error if the API request fails

     

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          */

     

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         async getEmojiList(): Promise<Record<string, string>> {

     

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           const response = await fetch("https://slack.com/api/emoji.list", {

     

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             headers: {

     

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               Authorization: `Bearer ${this.botToken}`,

     

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               "Content-Type": "application/json",

     

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             },

     

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           });

     

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           const data: SlackEmojiListResponse = await response.json();

     

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           if (!data.ok || !data.emoji) {

     

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             throw new Error(`Failed to get emoji list: ${data.error}`);

     

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           }

     

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           return data.emoji;

     

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         }

     

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         /**

     

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          * Verifies a Slack request signature

     

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          * @param signature The signature from the request header

     

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          * @param timestamp The timestamp from the request header

     

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          * @param body The raw request body

     

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          * @returns boolean indicating if the signature is valid

     

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          */

     

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         verifySignature(signature: string, timestamp: string, body: string): boolean {

     

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           const baseString = `v0:${timestamp}:${body}`;

     

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           const hmac = createHmac("sha256", this.signingSecret);

     

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           const computedSignature = `v0=${hmac.update(baseString).digest("hex")}`;

     

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           return timingSafeEqual(

     

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             Buffer.from(signature).valueOf() as Uint8Array,

     

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             Buffer.from(computedSignature).valueOf() as Uint8Array,

     

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           );

     

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         }

     

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       }

     

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       export { SlackWrapper };