Add the sync task for Publisher.

lib/decentralised_book_index/metadata/publisher.ex

@@ -25,6 +25,10 @@ defmodule DecentralisedBookIndex.Metadata.Publisher do
       accept [:name]
     end
 
+    create :sync_create do
+      accept [:id, :name, :inserted_at, :updated_at, :dbi_server_id]
+    end
+
     read :by_id do
       argument :id, :uuid, allow_nil?: false
       get? true
@@ -41,17 +45,24 @@ defmodule DecentralisedBookIndex.Metadata.Publisher do
 
       pagination offset?: true, default_limit: 10
     end
+
+    update :sync do
+      accept [:name, :inserted_at, :updated_at, :dbi_server_id]
+    end
   end
 
   attributes do
-    uuid_primary_key :id
+    uuid_primary_key :id, writable?: true
 
     attribute :name, :string do
       allow_nil? false
       public? true
     end
 
-    timestamps()
+    timestamps() do
+      writable? true
+      public? true
+    end
   end
 
   relationships do

lib/decentralised_book_index/sync/data_transformers/publisher_transformer.ex

@@ -0,0 +1,22 @@
+defmodule DecentralisedBookIndex.Sync.DataTransformers.PublisherTransformer do
+  def from_json(json_body) do
+    attrs =
+      if Map.has_key?(json_body, "data") do
+        %{
+          id: get_in(json_body, ["data", "id"]),
+          name: get_in(json_body, ["data", "attributes", "name"]),
+          inserted_at: get_in(json_body, ["data", "attributes", "inserted_at"]),
+          updated_at: get_in(json_body, ["data", "attributes", "updated_at"]),
+        }
+      else
+        %{
+          id: get_in(json_body, ["id"]),
+          name: get_in(json_body, ["attributes", "name"]),
+          inserted_at: get_in(json_body, ["attributes", "inserted_at"]),
+          updated_at: get_in(json_body, ["attributes", "updated_at"]),
+        }
+      end
+
+    {:ok, attrs}
+  end
+end

lib/decentralised_book_index/sync/sync/publisher_sync.ex

@@ -0,0 +1,29 @@
+defmodule DecentralisedBookIndex.Sync.PublisherSync do
+  alias DecentralisedBookIndex.Metadata
+  alias DecentralisedBookIndex.Metadata.Publisher
+
+  def create_update(attrs, server_id) do
+    case Metadata.get_publisher_by_id(attrs.id) do
+      {:ok, publisher} ->
+        attrs =
+          attrs
+          |> Map.delete(:id)
+
+        publisher
+        |> Ash.Changeset.for_update(:sync, attrs)
+        |> Ash.update!()
+
+        :ok
+      {:error, %Ash.Error.Query.NotFound{}} ->
+        attrs =
+          attrs
+          |> Map.put(:dbi_server_id, server_id)
+
+        Publisher
+        |> Ash.Changeset.for_create(:sync_create, attrs)
+        |> Ash.create!()
+
+        :ok
+    end
+  end
+end

lib/decentralised_book_index/sync/sync_tasks/sync_publishers_task.ex

@@ -0,0 +1,34 @@
+defmodule DecentralisedBookIndex.SyncTasks.SyncPublishersTask do
+  alias DecentralisedBookIndex.Sync.ApiClients.FetchJsons
+  alias DecentralisedBookIndex.Sync.DataTransformers.PublisherTransformer
+  alias DecentralisedBookIndex.Sync.PublisherSync
+
+  alias DecentralisedBookIndex.Metadata.DBIServer
+
+  def sync(%DBIServer{} = server) do
+    url = "#{server.url}/api/v1/json/publishers"
+    FetchJsons.get(url, sync_closure(server))
+
+    server
+  end
+
+  def sync_chunk(json_chunk, server_id) do
+    for json <- json_chunk do
+      with {:ok, attrs} <- PublisherTransformer.from_json(json),
+           :ok <- PublisherSync.create_update(attrs, server_id) do
+        :ok
+      else
+        {:error, reason} ->
+          Logger.error("Pipeline error: #{inspect(reason)}")
+      end
+    end
+
+    []
+  end
+
+  def sync_closure(server) do
+    fn json_chunk ->
+      sync_chunk(json_chunk, server.id)
+    end
+  end
+end

test/decentralised_book_index/sync/data_transformers/publisher_transformer_test.exs

@@ -0,0 +1,64 @@
+defmodule DecentralisedBookIndex.Sync.DataTransformers.PublisherTransformerTest do
+  use ExUnit.Case, async: true
+
+  alias DecentralisedBookIndex.Sync.DataTransformers.PublisherTransformer
+  alias DecentralisedBookIndex.Metadata.Publisher
+
+  describe "correct transformations" do
+    test "a json contains correct publisher information" do
+      json_body = %{
+        "data" => %{
+          "attributes" => %{
+            "inserted_at" => "2025-03-21T09:20:48.791539Z",
+            "name" => "Publisher",
+            "updated_at" => "2025-03-21T09:20:48.791539Z"
+          },
+          "id" => "11349865-1b7b-454a-b999-6c4059888a78",
+          "links" => %{},
+          "meta" => %{},
+          "relationships" => %{},
+          "type" => "publisher"
+        },
+        "jsonapi" => %{"version" => "1.0"},
+        "links" => %{
+          "self" =>
+            "http://localhost:4000/api/v1/json/publishers/11349865-1b7b-454a-b999-6c4059888a78"
+        },
+        "meta" => %{}
+      }
+
+      assert {:ok, publisher} = PublisherTransformer.from_json(json_body)
+
+      assert %{
+               id: "11349865-1b7b-454a-b999-6c4059888a78",
+               name: "Publisher",
+               inserted_at: "2025-03-21T09:20:48.791539Z",
+               updated_at: "2025-03-21T09:20:48.791539Z"
+             } = publisher
+    end
+
+    test "a json doesn't contains publisher information \"data\" attribute" do
+      json_body = %{
+        "attributes" => %{
+          "inserted_at" => "2025-03-21T09:20:48.791539Z",
+          "name" => "Publisher",
+          "updated_at" => "2025-03-21T09:20:48.791539Z"
+        },
+        "id" => "11349865-1b7b-454a-b999-6c4059888a78",
+        "links" => %{},
+        "meta" => %{},
+        "relationships" => %{},
+        "type" => "publisher"
+      }
+
+      assert {:ok, publisher} = PublisherTransformer.from_json(json_body)
+
+      assert %{
+               id: "11349865-1b7b-454a-b999-6c4059888a78",
+               name: "Publisher",
+               inserted_at: "2025-03-21T09:20:48.791539Z",
+               updated_at: "2025-03-21T09:20:48.791539Z"
+             } = publisher
+    end
+  end
+end

test/decentralised_book_index/sync/sync/publisher_sync_test.exs

@@ -0,0 +1,53 @@
+defmodule DecentralisedBookIndex.Sync.DataTransformers.PublisherSyncTest do
+  use DecentralisedBookIndex.DataCase, async: true
+
+  alias DecentralisedBookIndex.Sync.PublisherSync
+  alias DecentralisedBookIndex.Metadata
+
+  alias DecentralisedBookIndex.TestEndpoints
+  @test_server_endpoint TestEndpoints.test_api_endpoint()
+
+  describe "sync publisher transformations" do
+    test "a new publisher will be created" do
+      server = generate(dbi_server(url: @test_server_endpoint))
+
+      publisher = %{
+        id: "11349865-1b7b-454a-b999-6c4059888a78",
+        name: "Publisher",
+        inserted_at: "2025-03-21T09:20:48.791539Z",
+        updated_at: "2025-03-21T09:20:48.791539Z"
+      }
+
+      {:ok, inserted_at, 0} = DateTime.from_iso8601(publisher[:inserted_at])
+      {:ok, updated_at, 0} = DateTime.from_iso8601(publisher[:updated_at])
+
+      assert :ok = PublisherSync.create_update(publisher, server.id)
+      assert {:ok, saved_publisher} = Metadata.get_publisher_by_id(publisher.id)
+
+      publisher =
+        publisher
+        |> Map.replace(:inserted_at, inserted_at)
+        |> Map.replace(:updated_at, updated_at)
+
+      assert publisher = saved_publisher
+    end
+
+    test "update an existing publisher" do
+      server = generate(dbi_server(url: @test_server_endpoint))
+
+      {:ok, publisher} = Metadata.create_publisher("Publisher")
+
+      publisher_attrs = %{
+        id: publisher.id,
+        name: "Publisher",
+        inserted_at: "2025-03-21T09:20:48.791539Z",
+        updated_at: "2025-03-21T09:20:48.791539Z"
+      }
+
+      assert :ok = PublisherSync.create_update(publisher_attrs, server.id)
+      assert {:ok, saved_publisher} = Metadata.get_publisher_by_id(publisher.id)
+
+      assert publisher_attrs = saved_publisher
+    end
+  end
+end

test/decentralised_book_index/sync/sync_tasks/sync_publishers_task_test.exs

@@ -0,0 +1,20 @@
+defmodule DecentralisedBookIndex.SyncTasks.SyncPublishersTaskTest do
+  use DecentralisedBookIndex.DataCase
+
+  alias DecentralisedBookIndex.SyncTasks.SyncPublishersTask
+  alias DecentralisedBookIndex.Metadata
+
+  alias DecentralisedBookIndex.TestEndpoints
+  @test_server_endpoint TestEndpoints.test_api_endpoint()
+
+  describe "sync publishers tasks" do
+    test "sync publisher" do
+      server = generate(dbi_server(url: @test_server_endpoint))
+
+      {:ok, _publisher} = Metadata.create_publisher("Publisher")
+      {:ok, _publisher} = Metadata.create_publisher("Publisher2")
+
+      assert server = SyncPublishersTask.sync(server)
+    end
+  end
+end