Bot Framework doesn't have username if telegram profile doesn't have full name or username - botframework

Question

Messages delivered from Bot Framework don't have name property in from object if message was sent by user who doesn't have username and full name. For example if you delete first or last name from profile like that
Here's example of json that I get for messages sent from user that only has first name (look at from object):
{
"channelData": {
"message": {
"chat": {
"all_members_are_administrators": true,
"id": -219911672,
"title": "jlarky-dev",
"type": "group"
},
"date": 1493246056,
"from": {
"first_name": "Test",
"id": 107390199
},
"message_id": 100,
"text": "test"
},
"update_id": 66470785
},
"channelId": "telegram",
"conversation": {
"id": "-219911672",
"isGroup": true,
"name": "jlarky-dev"
},
"entities": [
{
"mentioned": {
"id": "JLarkyTestBot",
"name": "jlarky_test"
},
"text": "JLarkyTestBot",
"type": "mention"
}
],
"from": {
"id": "107390199"
},
"id": "KxBlE8JsLfg",
"recipient": {
"id": "JLarkyTestBot",
"name": "jlarky_test"
},
"serviceUrl": "https://telegram.botframework.com",
"text": "test",
"timestamp": "2017-04-26T22:34:17.4109674Z",
"type": "message"
}

Answer 1

Since #NilsW's comment I tested this again and it looks like from.name only exists when username of telegram profile was set (same can be looked up from channelData.message.from.username), so I guess it makes sense for it not to show username when username was not set :) and not having last_name part was not related here.