My goal with this code: When a user clicks the link, I want to log into a system via SSH, get a file and then download that file to the users machine.

I am probably making this more complicated that it needs to be and if there is a simpler way please let me know.

Live view named sims_live.ex

defmodule AppWeb.SimsLive do
  use AppWeb, :live_view

  def mount(_params, _session, socket) do
    {:ok,
     assign(socket,
       nothing: ""
     )}
  end


  def handle_event("get_JSON", params, socket) do

    IO.inspect params

    {:ok, conn} =
      SSH.connect(
        "system_ip.whatever",
        user: "root",
        identity: "/.ssh/id_rsa_nop",
        save_accepted_host: false,
        silently_accept_hosts: true,
        user_interaction: false
      )
     file_path = "priv/data.json"

    result = SSH.fetch(conn, "/data.json")

    {:ok, json_data} = result

    case File.write(file_path, json_data) do
      :ok ->
        # IO.puts("File written successfully")
        {:noreply, redirect(socket, to: "/download")}

      {:error, reason} ->
        IO.puts("Failed to write to file: #{reason}")
        {:noreply, socket}
    end

  end


  def render(assigns) do
    ~H"""
    <div>


          <a phx-click="get_JSON"> Click me </a>



    </div>
    """
  end
end

Controller named: download_controller

defmodule AppWeb.DownloadController do
  use AppWeb, :controller

  def home(conn, _params) do

    path = Application.app_dir(:app, "priv/data.json") #static directory
    send_download(conn, {:file, path})

    render(conn, :home, layout: false)

  end
end

The code above (kinda) works but there are two problems.

The first problem is that when a user clicks the event element the file is captured and downloads, but if the user clicks it again nothing happens without refreshing the page. I don’t know how to fix this. I think the download_controller may need a redirect of some sort, but everything I have tried has failed.

The second problem is this error, and I have no idea how to interpret it.

[error] Ranch listener AppWeb.Endpoint.HTTP had connection process started with :cowboy_clear:start_link/4 at #PID<0.834.0> exit with reason: {:function_clause, [{:cowboy_http, :commands, [{:state, #PID<0.602.0>, AppWeb.Endpoint.HTTP, #Port<0.33>, :ranch_tcp, :undefined, %{env: %{dispatch: [{:_, [], [{:_, [], Plug.Cowboy.Handler, {Phoenix.Endpoint.SyncCodeReloadPlug, {AppWeb.Endpoint, []}}}]}]},