Remove ecto repo, add writing to file

lib/birdy_chat/application.ex

@@ -5,14 +5,11 @@ defmodule BirdyChat.Application do
 
   use Application
 
-  @env Mix.env
-
   @impl true
   def start(_type, _args) do
     children = [
       BirdyChatWeb.Telemetry,
-      BirdyChat.Repo,
-      {BirdyChat.Identity, env: @env},
+      BirdyChat.Identity,
       {DNSCluster, query: Application.get_env(:birdy_chat, :dns_cluster_query) || :ignore},
       {Phoenix.PubSub, name: BirdyChat.PubSub},
       # Start a worker by calling: BirdyChat.Worker.start_link(arg)

lib/birdy_chat/identity.ex

@@ -32,8 +32,7 @@ defmodule BirdyChat.Identity do
   def parse_peers(peers) do
     values = String.split(peers, ";")
 
-    for value <- values,
-        [identity, address] = String.split(value, "::"), into: %{} do
+    for value <- values, [identity, address] = String.split(value, "::"), into: %{} do
       {identity, address}
     end
   end

lib/birdy_chat/message.ex

@@ -19,28 +19,4 @@ defmodule BirdyChat.Message do
       {:error, changeset}
     end
   end
-
-  def write(%{to: to, from: from, message: message} = msg) do
-    message_to_write = "#{from}: #{message}\n"
-    :ok = create_messages_folder!(Application.app_dir(:birdy_chat, ["priv", "messages"]))
-    path = Application.app_dir(:birdy_chat, ["priv", "messages", "#{to}.txt"])
-    result = File.write!(path, message_to_write, [:append])
-    {:ok, msg}
-  end
-
-  def create_messages_folder!(path) do
-    case File.mkdir(path) do
-      :ok ->
-        :ok
-
-      {:error, :eexist} ->
-        :ok
-
-      {:error, reason} ->
-        raise File.Error,
-          reason: reason,
-          action: "make directory",
-          path: IO.chardata_to_string(path)
-    end
-  end
 end

lib/birdy_chat/message_writer.ex

@@ -0,0 +1,16 @@
+defmodule BirdyChat.MessageWriter do
+  @moduledoc false
+
+  @spec write(%{to: String.t(), from: String.t(), message: String.t()}) :: :ok
+  def write(message) do
+    path = Application.app_dir(:birdy_chat, ["priv", "messages"])
+    write(path, message)
+  end
+
+  @spec write(String.t(), %{to: String.t(), from: String.t(), message: String.t()}) :: :ok
+  def write(path, %{to: to, from: from, message: message}) do
+    message_to_write = "#{from}: #{message}\n"
+    path = Path.join([path, "#{to}.txt"])
+    :ok = File.write!(path, message_to_write, [:append])
+  end
+end

lib/birdy_chat/repo.ex

@@ -1,5 +0,0 @@
-defmodule BirdyChat.Repo do
-  use Ecto.Repo,
-    otp_app: :birdy_chat,
-    adapter: Ecto.Adapters.Postgres
-end

lib/birdy_chat_web/api/messages/controller.ex

@@ -4,11 +4,11 @@ defmodule BirdyChatWeb.Api.Messages.Controller do
   def create(conn, params) do
     case BirdyChat.Message.validate(params) do
       {:ok, changeset} ->
-        case BirdyChat.Message.write(changeset.changes) do
-          {:ok, msg} ->
+        case BirdyChat.MessageWriter.write(changeset.changes) do
+          :ok ->
             conn
             |> put_status(:created)
-            |> render(:create, message: msg)
+            |> render(:create, message: changeset.changes)
         end
 
       {:error, changeset} ->

lib/birdy_chat_web/endpoint.ex

@@ -33,7 +33,6 @@ defmodule BirdyChatWeb.Endpoint do
     socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
     plug Phoenix.LiveReloader
     plug Phoenix.CodeReloader
-    plug Phoenix.Ecto.CheckRepoStatus, otp_app: :birdy_chat
   end
 
   plug Phoenix.LiveDashboard.RequestLogger,