Hello.
I have a following scenario 1: an array of structs (Post) that within themselves contain another array with struct (Like).

[
  Post%{
    id: 1,
    likes: [
      Like%{id: 1, post_id: 1, type: "upvote"},
      Like%{id: 2, post_id: 1, type: "downvote"},
    ]
  },
  Post%{
    id: 2,
    likes: [
      Like%{id: 3, post_id: 2, type: "downvote"},
    ]
  }
]

Now, I get the request to update the like on the post, like this:

Like%{id: 3, post_id: 2, type: "upvote"},

This means that I need to find the post that has id of 2, then in the array find the struct that has id of 3 and post_id of 2, and change the type to “upvote”, such that produces the following result:

[
  Post%{
    id: 1,
    likes: [
      Like%{id: 1, post_id: 1, type: "upvote"},
      Like%{id: 2, post_id: 1, type: "downvote"},
    ]
  },
  Post%{
    id: 2,
    likes: [
      Like%{id: 3, post_id: 2, type: "upvote"}, <- this changed
    ]
  }
]

Scenario 2:
This scenario is basically the same as the above with one additional request. Lets get another Like struct like this:

 Like%{id: 4, post_id: 2, type: "upvote"},

Its the same routine: find the post with the id of 2, but because we dont have a like struct with id of 4, we need to insert the whole Like struct in the array, like this:

[
  Post%{
    id: 1,
    likes: [
      Like%{id: 1, post_id: 1, type: "upvote"},
      Like%{id: 2, post_id: 1, type: "downvote"},
    ]
  },
  Post%{
    id: 2,
    likes: [
      Like%{id: 3, post_id: 2, type: "upvote"}, 
      Like%{id: 4, post_id: 2, type: "upvote"} <- This is new
    ]
  }
]

Can someone help me with this?