NodeJS Nested group aggregation with MongoDB - node.js

Question

I have a data set of payments that I want to group together to show on page in a report form. Below is the data:-
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab1"
},
"type": "Card",
"reason": "Deposit",
"item": "Dress",
"amount": 100,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab2"
},
"type": "Cash",
"reason": "Deposit",
"item": "Dress",
"amount": 400,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab3"
},
"type": "Cash",
"reason": "Deposit",
"item": "Dress",
"amount": 100,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab4"
},
"type": "Cash",
"reason": "Full Balance",
"item": "Dress",
"amount": 200,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab5"
},
"type": "Card",
"reason": "Full Balance",
"item": "Dress",
"amount": 300,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab6"
},
"type": "Cash",
"reason": "Deposit",
"item": "Jacket",
"amount": 400,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab7"
},
"type": "Card",
"reason": "Deposit",
"item": "Jacket",
"amount": 150,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab8"
},
"type": "Cash",
"reason": "Full Balance",
"item": "Jacket",
"amount": 250,
},
{
"_id": {
"$oid": "5bed91bfbbcf4d0014ec3ab9"
},
"type": "Card",
"reason": "Full Balance",
"item": "Jacket",
"amount": 350,
}
I can group the data by 1 item without problem, so for example I can group and total the amounts by item (Dress, Jacket etc.)
I would like to group by all three fields so would get an output that looks like this and structured so I can display them on the Frontend.
{
Dress: {
reason: {
"Deposit" : {
type: {
"Cash": 500 //Combination of 2 records for example
"Card": 100
}
}
"Full Balance" : {
type: {
"Cash": 200
"Card": 300
}
}
}
}
Jacket: {
reason: {
"Deposit" : {
type: {
"Cash": 400
"Card": 150
}
}
"Full Balance" : {
type: {
"Cash": 250
"Card": 350
}
}
}
}
I attempted to start this but I am struggling to get the concept right to be able to produce the right data. Obviously this doesn't produce the right output.
$group: {
_id: {item: "$item"},
totalAmount: {$sum: "$amount"}
},
$group: {
_id: {item: "$_id.item"},
total: {
"$push": {
type: {type: "$type"},
amount: {$sum : "$amount"}
}
}
}
Any help is appreciated.