@callback browse(target :: term(), store :: String.t(), opts :: keyword()) ::
  {[{String.t(), term(), String.t(), integer()}], term() | nil}

@callback count(target :: term(), store :: String.t()) :: non_neg_integer()

@callback delete(target :: term(), store :: String.t(), path :: String.t()) :: :ok

@callback delete_subtree(target :: term(), store :: String.t(), path :: String.t()) ::
  non_neg_integer()

@callback last_seq(target :: term(), store :: String.t()) :: integer()

@callback read(target :: term(), store :: String.t(), path :: String.t()) ::
  {:ok, term()} | :miss

@callback read_all(target :: term(), store :: String.t(), pattern :: String.t()) :: [
  {String.t(), term()}
]

@callback read_entry(target :: term(), store :: String.t(), path :: String.t()) ::
  {:ok,
   {value :: term(), type :: String.t(), seq :: integer(),
    synced_at :: integer() | nil}}
  | :miss

@callback read_many(target :: term(), store :: String.t(), paths :: [String.t()]) :: %{
  required(String.t()) =>
    {value :: term(), type :: String.t(), seq :: integer()}
}

@callback read_subtree(target :: term(), store :: String.t(), path :: String.t()) :: [
  {path :: String.t(), value :: term(), type :: String.t(), seq :: integer()}
]

@callback write(
  target :: term(),
  store :: String.t(),
  path :: String.t(),
  value :: term(),
  type :: String.t(),
  seq :: integer()
) :: :ok

@callback write_batch(target :: term(), store :: String.t(), entries :: list()) :: :ok