Notes

var data = request.body;
console.log('received bot webhook');
// Make sure this is a page subscription
if (data.object === 'page') {
// Iterate over each entry - there may be multiple if batched
data.entry.forEach(function (entry) {
// Here you can obtain values about the webhook, such as:
var pageID = entry.id
var timeOfEvent = entry.time
entry.messaging.forEach(function (event) {
if (event.message) {
receivedMessage(event);
} else if (event.game_play) {
receivedGameplay(event);
} else {
console.log('Webhook received unknown event: ', entry.id);

}
});
});
}

function receivedGameplay (event) {
// Page-scoped ID of the bot user
var senderId = event.sender.id;

// FBInstant player ID: event.game_play.player_id
// FBInstant context ID: event.game_play.context_id
// User's Page-scoped ID: event.sender.id

// Check for payload
if (event.game_play.payload) {
//
// The variable payload here contains data set by
// FBInstant.setSessionData()
//
var payload = JSON.parse(event.game_play.payload);

// In this example, the bot is just "echoing" the message received
// immediately. In your game, you'll want to delay the bot messages
// to remind the user to play 1, 3, 7 days after game play, for example.
sendMessage(senderId, null, 'wali tal3ab azaml 😂 '+ event.eventsSeen, 'Play now!', payload);
}
}






function sendMessage(player, context, message, cta, payload) {
var button = {
type: 'game_play',
title: cta
};

if (context) {
button.context = context;
}
if (payload) {
button.payload = JSON.stringify(payload);
}
var messageData = {
recipient: {
id: player
},
message: {
attachment: {
type: 'template',
payload: {
template_type: 'generic',
elements: [
{
title: message,
buttons: [button]
}
]
}
}
}
};

callSendAPI(messageData);
}