From c2f0fd6fcd84a53cd9b1a08bb12a9473f43acc71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Broks=20Randolfs=20Gail=C4=ABtis?=
 <broks.randolfs@gailitis.dev>
Date: Mon, 18 Aug 2025 20:10:07 +0300
Subject: [PATCH] Get port and servers from env

---
 lib/message_server/application.ex | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/message_server/application.ex b/lib/message_server/application.ex
index 29a660d..9511253 100644
--- a/lib/message_server/application.ex
+++ b/lib/message_server/application.ex
@@ -5,6 +5,11 @@ defmodule MessageServer.Application do
   @impl true
   def start(_type, _args) do
     server_id = get_server_id()
+    port = get_port()
+    servers = parse_servers()
+
+    Logger.info("Starting MessageServer #{server_id} on port #{port}")
+    Logger.info("Known servers: #{inspect(servers)}")
 
     children = [
       {MessageServer.Storage, server_id}
@@ -19,4 +24,20 @@ defmodule MessageServer.Application do
     System.get_env("SERVER_ID") ||
       raise "SERVER_ID is required"
   end
+
+  @spec get_port() :: integer()
+  def get_port() do
+    System.get_env("PORT", "4000") |> String.to_integer()
+  end
+
+  @spec parse_servers() :: map()
+  defp parse_servers() do
+    System.get_env("SERVERS", "")
+    |> String.split(",")
+    |> Enum.reject(&(&1 == ""))
+    |> Enum.into(%{}, fn server_string ->
+      [id, host, port] = String.split(server_string, ":")
+      {id, %{host: host, port: String.to_integer(port)}}
+    end)
+  end
 end