separation of functions

lib/plantid_discord_bot/cogs/plantnet.ex

@@ -39,30 +39,53 @@ defmodule PlantIdDiscordBot.Cog.PlantNet do
       }
     })
 
+    try do
       attachment_urls = get_attachment_urls(interaction)
       original_images = get_original_images(attachment_urls)
 
-    saved_images =
+      saved_images = File.download_and_save_files!(attachment_urls)
-      try do
+
-        File.download_and_save_files!(attachment_urls)
+      prepare_images(saved_images)
+      |> build_query_uri()
+      |> get_response(interaction, original_images)
+
+      cleanup_saved_images(saved_images)
     rescue
       e ->
         Api.create_followup_message(interaction.application_id, interaction.token, %{
           content: e.message
         })
     end
+  end
 
-    images =
+  defp get_attachment_urls(interaction) do
+    interaction.data.resolved.attachments
+    |> Map.values()
+    |> Enum.map(& &1.url)
+  end
+
+  @spec get_original_images([String.t()]) :: String.t()
+  defp get_original_images(attachment_urls), do: Enum.join(attachment_urls, "\n")
+
+  defp prepare_images(saved_images) do
     if Mix.env() in [:test, :dev] do
       PlantIdDiscordBotTest.Mocks.PlantNet.Images.images()
     else
       Enum.map(saved_images, fn {:ok, filename} -> "#{@fileserver_url}/#{filename}" end)
     end
+  end
 
-    Logger.debug(Enum.join(images, ", "))
+  @spec build_query_uri([String.t()]) :: String.t()
-
+  defp build_query_uri(image_filenames) do
-    query_uri = build_query_uri(images)
+    URI.parse("#{@plantnet_api_base_url}/identify/all?api-key=#{@plantnet_api_key}")
+    |> URI.append_query("images=#{Enum.join(image_filenames, "&images=")}")
+    |> URI.append_query("nb-results=#{@max_results}")
+    |> URI.append_query("type=kt")
+    |> URI.to_string()
+  end
 
+  @spec get_response(String.t(), Nostrum.Interaction.t(), String.t()) :: :ok
+  defp get_response(query_uri, interaction, original_images) do
     case HTTPoison.get(query_uri) do
       {:ok, %HTTPoison.Response{status_code: 200, body: body}} ->
         response_message = Parser.parse(body)
@@ -105,30 +128,10 @@ defmodule PlantIdDiscordBot.Cog.PlantNet do
           content: "Internal Server Error"
         })
     end
+  end
 
+  defp cleanup_saved_images(saved_images) do
     Enum.map(saved_images, fn {:ok, filename} -> filename end)
     |> File.delete_files!()
   end
-
-  defp get_attachment_urls(interaction) do
-    interaction.data.resolved.attachments
-    |> Map.values()
-    |> Enum.map(& &1.url)
-  end
-
-  @spec get_original_images([String.t()]) :: String.t()
-  defp get_original_images(attachment_urls), do: Enum.join(attachment_urls, "\n")
-
-  @spec build_query_uri([String.t()]) :: String.t()
-  defp build_query_uri(image_filenames) do
-    identify_api_url = "#{@plantnet_api_base_url}/identify/all?api-key=#{@plantnet_api_key}"
-
-    URI.append_query(
-      URI.parse(identify_api_url),
-      "images=#{Enum.join(image_filenames, "&images=")}"
-    )
-    |> URI.append_query("nb-results=#{@max_results}")
-    |> URI.append_query("type=kt")
-    |> URI.to_string()
-  end
 end