Demo Request: sendPhoto

[alexivanovvv]

Hey, is there any way to see a demo for sendPhoto? Can't figure it out…

[benjick]

Hey, can you try this? https://github.com/benjick/meteor-telegram-bot/issues/1#issuecomment-131053638

[alexivanovvv]

Thanks for the tip. I had to change the code from that example a bit, since Meteor was asking for callback to have its own fiber. However, still no luck: Telegram returns [Error: failed [400] {"ok":false,"error_code":400,"description":"[Error]: Bad Request: Wrong persistent file_id specified: contains wrong characters or have wrong length"}] stack: [Getter] on this code:

     fs = Npm.require('fs');
      TelegramBot.addListener('/senddoc', function(command, username, original) {
        fs.readFile('/etc/hosts', 'utf8', Meteor.bindEnvironment(function (err,data) {
          if (err) {
            console.log(err);
            return;
          }
          TelegramBot.method('sendDocument', {
            chat_id: original.chat.id,
            document: data,
          })
        }));

      });

[alexivanovvv]

another challenge is to get a picture file from a specific url to be uploaded with sendPhoto. I tried to do it with CollectionFS, but didn't succeed. fs.readStream didn't help either, so I'm a bit lost now.

[alexivanovvv]

Ended up using external php file to pass images. Not the best option, but does the job.

[benjick]

Can you describe the whole flow for me? What you are doing from a to b On Feb 17, 2016 23:24, "epleplepl" notifications@github.com wrote:

Ended up using external php file to pass images. Not the best option, but does the job.

— Reply to this email directly or view it on GitHub https://github.com/benjick/meteor-telegram-bot/issues/12#issuecomment-185434811 .

[alexivanovvv]

Hey, thanks for reply. I'm writing a bot that helps one memorize names.

On /start the sequence happens:

1. The bot sends a picture and a question "Who is this person?", randomly selected from a larger set of people.
2. Custom keyboard is shown with four names (one of them of the person)
3. The user replies with one of the names
4. The bot replies with either confirmation or a message with the correct name.
5. Repeat from 1.

Picture URLs and names are gathered from LinkedIn.

Here is the code I have now:

 TelegramBot.addListener('/start', function(command, username, original) {

    var chatId = original.chat.id;
    //a quiz person is selected from array
    var randomPerson = people.randomElement();

    // Create Keyboard
    kb = {
        keyboard: [
            [randomPerson.name,maleNames.randomElement()],
            [maleNames.randomElement(),maleNames.randomElement()]
        ],
        one_time_keyboard: true,
        resize_keyboard: true
    };

    keyboard = EJSON.stringify(kb);
    var message = "What's the name of this person?";

    //phpImageSendUrl is a variable containing URL to PHP file that posts the picture to the chat by ID
    HTTP.call("GET", phpImageSendUrl, { params: {chatid: chatId, url: randomPerson.imageURL} }, function(error, result) {
        if (!error) {
            TelegramBot.method('sendMessage', {
                chat_id: chatId,
                text: message,
                reply_markup: keyboard
                //reply_to_message_id: original.message.message_id
            });
        }
    });
});

the content of php file:

// PHP
if (isset($_GET['chatid'])) {
    $chatId = $_GET['chatid'];
} else {
    // Fallback behaviour goes here
}

if (isset($_GET['url'])) {
    $imageUrl = $_GET['url'];
} else {
    // Fallback behaviour goes here
}

print_r('botURL:' . $botUrl . '<br/>');
print_r('chat id: ' . $chatId . '<br/>');
print_r('image URL: ' . $imageUrl . '<br/>');

sendPhoto($chatId,$imageUrl);
function sendPhoto($chatId,$photoUrl){
    global $botUrl;
    $url = $botUrl . "sendPhoto?chat_id=" . $chatId;
    $ext = pathinfo($photoUrl, PATHINFO_EXTENSION);
    $localFile = '/tmp/image'  . rand ( 10 , 99) . '.' . $ext;

    copy($photoUrl, $localFile);

    $postFields = array(
        'chat_id' => $chatId,
        'photo' => new CURLFile(realpath($localFile))
    );

    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        "Content-Type:multipart/form-data"
    ));
    curl_setopt($ch, CURLOPT_URL, $url); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields); 
    $output = curl_exec($ch);

    //print_r('Image Sent '. $botUrl . ' '. $photoUrl . ' > ' . $localFile);
}

[alexivanovvv]

Things I didn't figure out yet:

1. how to send images from Meteor
2. how to follow up on discussion, that is, learn what user replies and depending on where you are in conversation, reply with corresponding response (e.g. if the name entered was correct, reply 'Good job!')
3. how to properly loop the whole thing (step 5)

I'd appreciate your feedback and hints, Max.

[benjick]

For (1) can you try this?

var r = request.post('http://service.com/upload', Meteor.bindEnvironment(function(err, httpResponse, body) {
  if (err) {
    return console.error('upload failed:', err);
  }
  console.log('Upload successful!  Server responded with:', body);
}));
var form = r.form()
form.append('my_file', fs.createReadStream(path.join(__dirname, 'doodle.png')))

I will check the rest when I have time

[alexivanovvv]

Thanks for pointing out! Below is the code that finally worked.

1. May I suggest adding sendPhoto by URL function to the package?
2. Is there way to use Meteor.npmRequire() without filling in packages.json?

function sendPhoto(chatId,photoURL,callback) {
    if (typeof chatId == 'undefined') {
        console.log('chatId undefined');
        return false;
    }

    if (typeof photoURL == 'undefined') {
        console.log('photoURL undefined');
        return false;
    }

    var sendURL = 'https://api.telegram.org/bot' + TELEGRAM_TOKEN + '/sendPhoto?chat_id=' + chatId;
    var randomPerson = people.randomElement();
    var request = Meteor.npmRequire('request');
    var r = request.post(sendURL, Meteor.bindEnvironment( function(err, httpResponse, body) {
        if (err) {
            return console.error('upload failed:', err);
        }
        console.log('Upload successful!  Server responded with:', body);
    }));

    var form = r.form();
    form.append('photo', request(photoURL));

    if (typeof callback != 'undefined') {
        return callback;
    }

[benjick]

Hey. If you want to do a pull request I'd be happy to merge it.

[alexivanovvv]

Pull request… It’s going to be that day when I finally feel like a proper developer ^_^

[ghost]

guys can u add sendPhoto function to this package?

[benjick]

You can call any method @Evrei, what's the problem?