agregamos redirect.ex y refactorizamos get_hash.ex en controller

lib/api_web/controllers/get_hash.ex

@@ -7,6 +7,7 @@ defmodule ApiWeb.GetHash do
   # El token fue generado con generate_token(%{password: "1nf0rm3"})
   @valid_token "XHhlNmU3Y2RmYjAyOGZhNWM5NjVhZGNkOTNhOTQ0NDRkYmYwMWFkM2U3YjQ1NjE1YzU1ZDg0ZjlmMDQzNDRmNTUw"
 
+
   def index(conn, %{"study" => accessionnumber}) do
     Envar.load(".env")
     Envar.require_env_file(".env")
@@ -16,7 +17,25 @@ defmodule ApiWeb.GetHash do
       |> put_status(:unauthorized)
       |> json(%{error: "Token inválido o ausente"})
     else
+
       Logger.info("Accession get hash -> #{accessionnumber}")
+        hash = get_hash(accessionnumber)
+        if hash == "nil" do
+      
+          conn
+          |> put_status(:not_found)
+          |> json(%{error: "Estudio no encontrado"})
+        else
+        
+          conn
+          |> put_status(:ok)
+          |> json(%{hash: hash})
+
+        end
+    end
+  end
+
+    def get_hash(accessionnumber) do
 
       studyidentifier = Envar.get("IDENTIFIERFIELD") || "IDSTUDY"
 
@@ -45,10 +64,7 @@ defmodule ApiWeb.GetHash do
 
       case Repo.one(query) do
         nil ->
-          conn
-          |> put_status(:not_found)
-          |> json(%{error: "Estudio no encontrado"})
-
+          "nil"
         res ->
           vencimiento = DateTime.add(DateTime.utc_now(), 2 * 24 * 60 * 60, :second)
 
@@ -56,13 +72,11 @@ defmodule ApiWeb.GetHash do
 
           token = generate_token(json_data)
 
-          conn
-          |> put_status(:ok)
-          |> json(%{hash: token})
       end
-    end
+
   end
 
+
   def generate_token(json) do
     json_string = Jason.encode!(json)
     query = "select encrypt('#{json_string}'::bytea, '1nf0rm3', 'aes')::text"