I'm currently working on implementing a user-to-user messaging feature within my NodeJS, Express, MongoDB application.
The approach I'm taking involves utilizing two MongoDB documents: 'Messages' to store individual messages and 'Conversations' to group related messages together.
Upon receiving a new message on the server, my goal is to search for existing conversations involving both the sender and recipient. If a relevant conversation is found, I aim to update it with the latest message. In case no such conversation exists, I need to create a new one and then add the message to it.
app.post('/messages', function(req, res){
var message = { // Construct an object containing the message details
sender: req.body.sender,
recipient: req.body.recipient,
messageContent: req.body.msgCont,
timeSent: Date.now()
};
Message.create(message, function(err, newMessage){ // Save the message to MongoDB
if(err){
console.log('Error Creating Message' + Err);
} else {
console.log("The New Message " + newMessage)
Conversation.findOneAndUpdate({ // Look for a conversation involving both users
$and: [ // as participants (there should only be one)
{$or: [
{"participants.user1.id" : req.body.sender},
{"participants.user1.id" : req.body.recipient}
]},
{$or: [
{"participants.user2.id" : req.body.sender},
{"participants.user2.id" : req.body.recipient}
]},
]}, {$setOnInsert : {
messages : message,
"participants.user1.id" : req.body.sender,
"participants.user2.id" : req.body.recipient
},
new : true,
upsert : true
}, function(err, convo){
if(err){
console.log(err + 'error finding conversation')
} else {
console.log("Convo " + convo)
}
});
}
});
res.redirect('/matches');
});
Saving messages to the database functions correctly, but there seems to be an issue with the Conversation query. When checking the console, I receive Convo null, indicating that nothing is being added to the conversation document.
If anyone can spot where I might have made a mistake, any assistance would be greatly appreciated!