defmodule Mongo.InsertOneResult do
  @moduledoc """
  The successful result struct of `Mongo.insert_one/4`. Its fields are:

    * `:inserted_id` - The id of the inserted document
  """

  @type t :: %__MODULE__{
    inserted_id: nil | BSON.ObjectId.t
  }

  defstruct [acknowledged: true, inserted_id: nil]
end

defmodule Mongo.InsertManyResult do
  @moduledoc """
  The successful result struct of `Mongo.insert_many/4`. Its fields are:

    * `:inserted_ids` - The ids of the inserted documents indexed by their order
  """

  @type t :: %__MODULE__{
    inserted_ids: %{non_neg_integer => BSON.ObjectId.t}
  }

  defstruct [acknowledged: true, inserted_ids: nil]
end

defmodule Mongo.DeleteResult do
  @moduledoc """
  The successful result struct of `Mongo.delete_one/4` and `Mongo.delete_many/4`.
  Its fields are:

    * `:deleted_count` - Number of deleted documents
    * `:acknowledged` - Write-concern
  """

  @type t :: %__MODULE__{
    acknowledged: boolean,
    deleted_count: non_neg_integer
  }

  defstruct [acknowledged: true, deleted_count: 0]
end

defmodule Mongo.UpdateResult do
  @moduledoc """
  The successful result struct of `Mongo.update_one/5`, `Mongo.update_many/5`
  and `Mongo.replace_one/5`. Its fields are:

    * `:matched_count` - Number of matched documents
    * `:modified_count` - Number of modified documents
    * `:upserted_ids` - If the operation was an upsert, the upserted ids
  """

  @type t :: %__MODULE__{
    acknowledged: boolean,
    matched_count: non_neg_integer,
    modified_count: non_neg_integer,
    upserted_ids: list(BSON.ObjectId.t)
  }

  defstruct [acknowledged: true, matched_count: 0, modified_count: 0, upserted_ids: []]
end