codicil

defmodule Codicil.Db.ModuleDependency do
  # Schema for module dependency relationships.
  #
  # Tracks two types of dependencies:
  # - :compiler - Compile-time dependencies (import/require/use)
  # - :runtime - Runtime dependencies (function calls between modules)
  @moduledoc false

  use Ecto.Schema
  import EctoEnum
  alias Ecto.Changeset

  defenum(DependencyType, compiler: 0, runtime: 1)

  schema "module_dependencies" do
    belongs_to(:dependent, Codicil.Db.Module, type: :string, foreign_key: :dependent_id)
    belongs_to(:dependency, Codicil.Db.Module, type: :string, foreign_key: :dependency_id)
    field(:type, DependencyType)
  end

  def changeset(module_dependency, attrs) do
    # IMPORTANT: DO NOT CHANGE THIS LINE - converts atoms to strings, including nil -> "nil"
    # This line requires dependent_id and dependency_id keys to exist in attrs
    attrs = %{
      attrs
      | dependent_id: "#{attrs.dependent_id}",
        dependency_id: "#{attrs.dependency_id}"
    }

    module_dependency
    |> Changeset.cast(attrs, [:dependent_id, :dependency_id, :type])
    |> Changeset.validate_required([:dependent_id, :dependency_id, :type])
  end
end