schema.ex

defmodule BlogWeb.Schema do
  use Absinthe.Schema

  import_types Absinthe.Type.Custom
  import_types BlogWeb.Schema.AccountTypes
  import_types BlogWeb.Schema.ContentTypes

  alias BlogWeb.Resolvers
  alias Blog.Content


  # =============
  # Dataloader 
  def context(ctx) do
     loader =
       Dataloader.new()
       |> Dataloader.add_source(Content, Content.data())

    Map.put(ctx, :loader, loader)
  end

  def plugins do
    [Absinthe.Middleware.Dataloader | Absinthe.Plugin.defaults()]
  end
    
  query do

    @desc "Get all posts"
    field :posts, list_of(:post) do
      resolve &Resolvers.Content.list_posts/3
    end

    @desc "Get a user of the blog"
    field :user, :user do
      arg :id, non_null(:id)
      resolve &Resolvers.Accounts.find_user/3
    end

  end

  mutation do

    @desc "Create a post"
    field :create_post, :post do
      arg :title, non_null(:string)
      arg :body, non_null(:string)
      arg :published_at, :naive_datetime

      resolve &Resolvers.Content.create_post/3
    end

    @desc "Create a user"
    field :create_user, :user do
      arg :name, non_null(:string)
      arg :contact, non_null(:contact_input)
      arg :password, non_null(:string)

      resolve &Resolvers.Accounts.create_user/3
    end

  end

  subscription do
    field :new_post, :post do
      config fn _args, _info ->
        {:ok, topic: "*"}
      end
    end 
  end

end