matrix-slack-parser

This package is a message parser for sending messages between Matrix and Slack. For that, it has two parsers: SlackMessageParser and MatrixMessageParser.

Installation

npm install --save matrix-slack-parser

SlackMessageParser

Example code:

import { SlackMessageParser, ISlackMessageParserOpts } from "matrix-slack-parser";

const parser = new SlackMessageParser();
const opts = {
    callbacks: {
        getUser: async (id: string, name: string) => null,
        getChannel: async (id: string, name: string) => null,
        getUsergroup: async (id: string, name: string) => null,
        getTeam: async (id: string, name: string) => null,
        urlToMxc: async (url: string) => null,
    },
} as ISlackMessageParserOpts;
const message = msg; // a slack message object. The one with the keys "text" and optionally "blocks", "attachments"
const result = await parser.FormatMessage(opts, message);
console.log(results); // this is a matrix message content, ready to be sent

All options of ISlackMessageParserOpts:

callbacks: ISlackMessageParserCallbacks, the callbacks to handle
- getUser: async (id: string, name: string) => Promise<ISlackMessageParserEntity | null>, resolves to either the information on the slack user or to null. name cannot be trusted.
- getChannel: async (id: string, name: string) => Promise<ISlackMessageParserEntity | null>, resolves to either the information on the slack channel or to null. name cannot be trusted.
- getUsergroup: async (id: string, name: string) => Promise<ISlackMessageParserEntity | null>, resolves to either the information on the slack usergroup or to null. name cannot be trusted.
- getTeam: async (id: string, name: string) => Promise<ISlackMessageParserEntity | null>, resolves to either the information on the slack team or to null. name cannot be trusted.
- urlToMxc: async (url: string) => Promise<string | null>, resolves to an mxc url associated with the http url, or null. If you don't de-dupe images it is recommended to resolve to null.

All properties of ISlackMessageParserEntity:

name: string, the name of the entity
mxid: string, the resulting matrix ID of the entity

MatrixMessageParser

Example code:

import { MatrixMessageParser, IMatrixMessageParserOpts } from "matrix-slack-parser":

const parser = new MatrixMessageParser)();
const opts = {
    callbacks: {
        canNotifyRoom: async () => false,
        getUserId: async (mxid: string) => null,
        getChannelId: async (mxid: string) => null,
        mxcUrlToHttp: (mxc: string) => "http://example.com",
    },
} as IMatrixMessageParserOpts;

const msg = { // raw matrix event content
    msgtype: "m.text",
    body: "**blah**",
    format: "org.matrix.custom.html",
    formatted_body: "<strong>blah</strong>",
};

const result = await parser.FormatMessage(opts, msg);
console.log(result); // a slack message ready to send, with the properties "text" and "blocks"

It is expected to create the options for a message within a closure so that the callbacks can determine if, for that particular message, the author may e.g. notify that particular room.

All options of IMatrixMessageParserOpts:

callbacks: IMatrixMessageParserCallbacks, the callbacks to handle
- canNotifyRoom: async () => Promise<boolean>, return if that particular user can notify that particular room
- getUserId: async (mxid: string) => Promise<string | null>, return the slack user ID given an mxid, or null
- getChannelId: async (mxid: string) => Promise<string | null>, return the slack channel ID given an mxid, or null
- mxcUrlToHttp: (mxc: string) => string, resolve an mxc uri to a publicly available http url.

Returned is a slack message object. If you only want to send the markdown-formatted message, use result.text. If you want to also send the blocks, send both result.text and result.blocks, so something like:

await web.chat.postMessage({
    ...result,
    channel,
    as_user: true,
});

janza/matrix-slack-parser

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