mautrix_telegram_ynh/README.md

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# Matrix-Telegram bridge for YunoHost

[![Integration level](https://dash.yunohost.org/integration/mautrix_telegram.svg)](https://dash.yunohost.org/appci/app/mautrix_telegram) ![Working status](https://ci-apps.yunohost.org/ci/badges/mautrix_telegram.status.svg) ![Maintenance status](https://ci-apps.yunohost.org/ci/badges/mautrix_telegram.maintain.svg)  
[![Install Matrix-Telegram bridge with YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=mautrix_telegram)

*[Lire ce readme en français.](./README_fr.md)*

> *This package allows you to install Matrix-Telegram bridge quickly and simply on a YunoHost server.
If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/install) to learn how to install it.*

## Overview

A puppeting bridge between Matrix and Telegram packaged as a YunoHost service. Messages, notifications (and sometimes media) are bridged between a Telegram user and a Matrix user. Currently the Matrix user can NOT invite other Matrix user in a bridged Telegram room, so only someone with a Telegram account can participate to Telegram group conversations. The ["Mautrix-Telegram"](https://docs.mau.fi/bridges/python/telegram/index.html) bridge is a Synapse App Service and relies on postgresql. Therefore, [Synapse for YunoHost](https://github.com/YunoHost-Apps/synapse_ynh) should be installed beforehand.


**Shipped version:** 0.12.2~ynh3
## Disclaimers / important information

## List of known public services

* Ask on one of the following rooms: #mautrix_yunohost:matrix.fdn.fr or #telegram:maunium.net

## Bridging usage
** Note that several Telegram and Matrix users can be bridged, each Telegram account has its own bot administration room. If they are in a same Telegram group, only one matrix room will be created. **

### Bridge a Telegram user and a Matrix user
* First your Matrix user or Synapse Server has to be authorized in the Configuration of the bridge (see below)
* Then, invite the bot (default @telegrambot:yoursynapse.domain) in this new Mautrix-Telegram bot administration room.
  * If the Bot does bot accept, see the [troubleshooting page](https://docs.mau.fi/bridges/general/troubleshooting.html)
* Send ``!tg help`` to the bot in the created room to know how to control the bot.
See also [upstream wiki Authentication page](https://docs.mau.fi/bridges/python/telegram/authentication.html)

#### Logging into Telegram account
* Type ``login`` or ``login-qr`` (untested) in main management room (`!tg` in any bridge room)
* follow setup instructions from bot
* By defaults, only conversations with very recent messages and groups will be suggested to be bridged
* Accept invitations to the bridged chat rooms

#### Registering the Bridge as a primary device (untested)
* Type ``!tg register <phone>``, where ``<phone>`` is your phone number in the internation format with no space, e.g. ``!tg register +33612345678``
* Answer in the bot room with the verification code that you reveived in SMS.
* Set a profile name with ``!tg set-profile-name <name>``

### Double puppeting
* Log in with ``login-matrix <access token>``
* After logging in, the default Matrix puppet of your Telegram account should leave rooms and your account should join all rooms the puppet was in automatically.


### Relaybot: Bridge a group for several Matrix and several Telegram users to chat together
* see https://docs.mau.fi/bridges/python/telegram/relay-bot.html

## Configuration of the bridge

The bridge is [roughly configured at installation](https://github.com/YunoHost-Apps/mautrix_telegram_ynh/blob/master/conf/config.yaml), e.g. allowed admin and user of the bot. Finer configuration can be done by modifying the
following configuration file with SSH: 
```/opt/yunohost/mautrix_telegram/config.yaml```
and then restarting the mautrix_telegram service.

## Documentation

 * Official "Mautrix-Telegram" documentation: https://docs.mau.fi/bridges/python/telegram/index.html
 * Matrix room (Matrix Bridges in Yunohost): #mautrix_yunohost:matrix.fdn.fr
 * Matrix room (upstream app): #telegram:maunium.net
In case you need to upload your logs somewhere, be aware that they contain your contacts' and your phone numbers. Strip them out with 
``| sed -r 's/[0-9]{10,}/📞/g' ``
 * "Mautrix-Telegram" bridge is based on the [telegram daemon](https://gitlab.com/telegramd/telegramd) project.
 * YunoHost documentation: If more specific documentation is needed, feel free to contribute.

## YunoHost specific features

#### Multi-user support

* Bot users are not related to Yunohost users. Any Matrix account or Synapse server autorized in the configuration of the bridge can invite/use the bot. 
* The Telegram bot is a local Matrix-Synapse user, but accessible through federation (synapse public or private).
* Several Telegram and Matrix users can be bridged with one bridge, each user has its own bot administration room. 
* If several bot users are in a same Telegram group, only one Matrix room will be created by the bridge.
* See https://github.com/YunoHost-Apps/synapse_ynh#multi-users-support

#### Multi-instance support

* Multi-instance installation should work. Several bridge instances could be installed for one Matrix-Synapse instance so that one Matrix user can bridge several Telegram accounts. 
* Several bridge instances could be installed for each Matrix-Synapse instance to benefit from it. But one bridge can be used by users from several Matrix-Synapse instances.

## Troubleshooting

* Check the spelling of the bot name!
* For slow servers it might be necessary to run ``systemctl edit mautrix_telegram.service`` (also for `coturn.service` and `coturn-synapse.service`) and insert
```
[Service]
ExecStartPre=/bin/sleep 90
```
such that it is ensured that synapse is running before the bridge tries to connect.
(If it worked after installation but broke after a restart this probably is it.)

## Documentation and resources

* Official app website: <https://docs.mau.fi/bridges/python/telegram/index.html>
* Official user documentation: <https://docs.mau.fi/bridges/python/telegram/management-commands.html>
* Official admin documentation: <https://github.com/YunoHost-Apps/mautrix_telegram_ynh>
* Upstream app code repository: <https://github.com/mautrix/telegram>
* YunoHost documentation for this app: <https://yunohost.org/app_mautrix_telegram>
* Report a bug: <https://github.com/YunoHost-Apps/mautrix_telegram_ynh/issues>

## Developer info

Please send your pull request to the [testing branch](https://github.com/YunoHost-Apps/mautrix_telegram_ynh/tree/testing).

To try the testing branch, please proceed like that.

``` bash
sudo yunohost app install https://github.com/YunoHost-Apps/mautrix_telegram_ynh/tree/testing --debug
or
sudo yunohost app upgrade mautrix_telegram -u https://github.com/YunoHost-Apps/mautrix_telegram_ynh/tree/testing --debug
```

The `.github/workflows/updater.sh` script needs to be synced with changes in `conf/config.yaml` so for now a `pre-commit`
hook is used to display a reminder to update `.github/workflows/updater.sh` (if needed)  when `conf/config.yaml` has been modified.

Please enable Git hooks using following command to ensure code quality and stability.
``` bash
git config --local core.hooksPath .githooks
```

**More info regarding app packaging:** <https://yunohost.org/packaging_apps>