defmodule Sukaato.Post do
  use Ecto.Schema
  import Ecto.Changeset
  # import Sukaato.CustomValidators

  schema "posts" do
    field :title, :string
    field :cat, :string
    field :abst, :string
    field :slug, :string
    field :content, :string
    field :tags, {:array, :string}
    field :ledit, :utc_datetime
    field :auth_id, :id
    field :rev_id, :id

    timestamps(type: :utc_datetime)
  end

  @doc false
  def changeset(post, attrs) do
    post
    |> cast(attrs, [:title, :abst, :slug, :content, :tags, :cat, :ledit])
    |> validate_required([:title, :content, :cat, :ledit])
    |> validate_format(:cat, ~r/^(\.(\w)+)+/)
    |> unique_constraint(:title)
    |> gen_slug()
  end

  defp gen_slug(changeset) do
    slug = changeset.changes.title |> String.downcase() |> String.replace(" ", "-")

    put_change(changeset, :slug, slug)
  end
end