MadelineProto/examples/libtgvoipbot.php

<?php declare(strict_types=1);

use danog\MadelineProto\EventHandler\Attributes\Handler;
use danog\MadelineProto\EventHandler\Filter\FilterCommand;
use danog\MadelineProto\EventHandler\Message;
use danog\MadelineProto\EventHandler\SimpleFilter\HasAudio;
use danog\MadelineProto\EventHandler\SimpleFilter\HasDocument;
use danog\MadelineProto\EventHandler\SimpleFilter\Incoming;
use danog\MadelineProto\Ogg;
use danog\MadelineProto\SimpleEventHandler;

use function Amp\async;

if (class_exists(API::class)) {
    // Otherwise, if a stable version of MadelineProto was installed via composer, load composer autoloader
} elseif (file_exists('vendor/autoload.php')) {
    require_once 'vendor/autoload.php';
} else {
    // Otherwise download an !!! alpha !!! version of MadelineProto via madeline.php
    if (!file_exists('madeline.php')) {
        copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
    }
    require_once 'madeline.php';
}

class MyEventHandler extends SimpleEventHandler
{
    #[FilterCommand('start')]
    public function startCmd(Incoming&Message $message): void
    {
        $message->reply("This bot can be used to convert files to be played by a @MadelineProto Telegram webradio!\n\nSee https://docs.madelineproto.xyz/docs/CALLS.html for more info, and call @magicalcrazypony to hear some nice tunes!\n\nSend me an audio file to start.\n\nPowered by @MadelineProto.");
    }
    #[Handler]
    public function convertCmd((Incoming&Message&HasAudio)|(Incoming&Message&HasDocument) $message): void
    {
        $pipe = self::getStreamPipe();
        $sink = $pipe->getSink();
        async(
            Ogg::convert(...),
            $message->media->getStream(),
            $sink
        )->finally($sink->close(...));

        $this->sendDocument(
            $message->chatId,
            file: $pipe->getSource(),
            fileName: $message->media->fileName.".ogg"
        );
    }
}

if (!getenv('TOKEN')) {
    throw new AssertionError("You must define a TOKEN environment variable with the token of the bot!");
}

MyEventHandler::startAndLoopBot('libtgvoipbot.madeline', getenv('TOKEN'));