creating images

lib/labelmaker_web/live/label.ex

@@ -0,0 +1,53 @@
+defmodule LabelmakerWeb.Label do
+  use LabelmakerWeb, :live_view
+
+  @label_dir Path.join(:code.priv_dir(:labelmaker), "static/labels")
+
+  def mount(%{"label" => label}, _session, socket) do
+    File.mkdir_p!(@label_dir)
+
+    filename = "#{label}.png"
+    filepath = Path.join(@label_dir, filename)
+
+    unless File.exists?(filepath) do
+      generate_label_image(label, filepath)
+    end
+
+    {:ok,
+     assign(socket,
+       label: label,
+       image_path: ~p"/labels/#{filename}"
+     )}
+  end
+
+  def render(assigns) do
+    ~H"""
+    <div>
+      <h1>Label: {@label}</h1>
+      <img src={@image_path} alt="" />
+    </div>
+    """
+  end
+
+  defp generate_label_image(label, filepath) do
+    args = [
+      "-background",
+      "none",
+      "-fill",
+      "black",
+      "-pointsize",
+      "24",
+      "-font",
+      "Comic-Sans-MS",
+      "label:#{label}",
+      filepath
+    ]
+
+    {_, 0} = System.cmd("magick", args)
+
+    IO.puts(filepath)
+    # png_binary = File.read!(filepath)
+    # File.rm(tmp_file)
+    # Base.encode64(png_binary)
+  end
+end