Lookup - Objects within an Object (Nested Object)

MongoDB Atlas Atlas Triggers & Functions
,
1

Need to do a lookup and I have an object(s) within an Object. I have spent quite an amount of time looking for examples similar to this, but am only finding example where there is an array of objects within an object…

I have seemed to simplify this down to not even knowing how to how to access objects with an Object.

  • _id – ObjectID Always present
  • email – String Always present
  • dailyIntake – Object Always present
    • breakfast – Object, Not required / not always present
      • Ingredient – Array
    • lunch – Object, Not required / not always present
      • Ingredient – Array
    • dinner – Object, Not required / not always present
      • Ingredient – Array

Shown below:
Daily Intake – Collection

[
  {
    "name": "Taylor Scott",
    "email": "taylor_scott@fakegmail.com",
    "dailyIntake": {
      "breakfast": {
        "foodItem": [
          "pancakes"
        ]
      },
      "lunch": {
        "foodItem": [
          "sandwhich"
        ]
      },
      "dinner": {
        "foodItem": [
          "mushroom soup",
          "salad"
        ]
      }
    }
  }
]

NOTE: Not required that breakfast, lunch, or dinner are present

Now I have another collection:
Food – Collection

[
  {
    "_id": "egg",
    "consumer_name": "Taylor Scott",
    "brand": "FarmFresh",
    "distributor": "Whole Foods"
  }
]

I would like to do a $lookup that gives me something like this:

[
  {
    "name": "Taylor Scott",
    "email": "taylor_scott@fakegmail.com",
    "dailyIntake": {
      "breakfast": {
        "foodItem": [
          "pancakes"
        ]
      },
      "lunch": {
        "foodItem": [
          "sandwhich"
        ]
      },
      "dinner": {
        "foodItem": [
          "mushroom soup",
          "salad"
        ]
      }
    },
    "dailyIntakeObjects": [ 
        { 
           "_id": "egg",  
           "consumer_name": "Taylor Scott",
           "brand": "FarmFresh",
           "distributor": "Whole Foods"},  
           { <ham object> }, 
           { <mushroom soup object>}, 
           { <salad object>}
      }
   ]
}

]