From 4a7e966744143dc3a29ea3f291f1f9649bdae7aa Mon Sep 17 00:00:00 2001
From: Gavin McDonald <gavinmcdoh@gmail.com>
Date: Fri, 17 Oct 2025 18:25:45 -0400
Subject: [PATCH] Claude set up a '/labels' endpoint

---
 .../controllers/labels_controller.ex          | 38 ++++++++
 lib/labelmaker_web/controllers/labels_html.ex | 16 ++++
 .../controllers/labels_html/index.html.heex   | 74 +++++++++++++++
 lib/labelmaker_web/router.ex                  |  1 +
 .../controllers/labels_controller_test.exs    | 93 +++++++++++++++++++
 5 files changed, 222 insertions(+)
 create mode 100644 lib/labelmaker_web/controllers/labels_controller.ex
 create mode 100644 lib/labelmaker_web/controllers/labels_html.ex
 create mode 100644 lib/labelmaker_web/controllers/labels_html/index.html.heex
 create mode 100644 test/labelmaker_web/controllers/labels_controller_test.exs

diff --git a/lib/labelmaker_web/controllers/labels_controller.ex b/lib/labelmaker_web/controllers/labels_controller.ex
new file mode 100644
index 0000000..ceba131
--- /dev/null
+++ b/lib/labelmaker_web/controllers/labels_controller.ex
@@ -0,0 +1,38 @@
+defmodule LabelmakerWeb.LabelsController do
+  use LabelmakerWeb, :controller
+
+  @label_dir Path.join(:code.priv_dir(:labelmaker), "static/labels")
+
+  def index(conn, _params) do
+    labels = list_labels()
+    render(conn, :index, labels: labels)
+  end
+
+  defp list_labels do
+    case File.ls(@label_dir) do
+      {:ok, files} ->
+        files
+        |> Enum.filter(&String.ends_with?(&1, ".png"))
+        |> Enum.map(fn filename ->
+          filepath = Path.join(@label_dir, filename)
+          stat = File.stat!(filepath)
+
+          %{
+            filename: filename,
+            filepath: filepath,
+            size: stat.size,
+            modified: stat.mtime,
+            url: "/labels/#{filename}"
+          }
+        end)
+        |> Enum.sort_by(& &1.modified, :desc)
+
+      {:error, :enoent} ->
+        # Directory doesn't exist yet
+        []
+
+      {:error, _reason} ->
+        []
+    end
+  end
+end
diff --git a/lib/labelmaker_web/controllers/labels_html.ex b/lib/labelmaker_web/controllers/labels_html.ex
new file mode 100644
index 0000000..edd4d20
--- /dev/null
+++ b/lib/labelmaker_web/controllers/labels_html.ex
@@ -0,0 +1,16 @@
+defmodule LabelmakerWeb.LabelsHTML do
+  use LabelmakerWeb, :html
+
+  embed_templates "labels_html/*"
+
+  def format_size(bytes) when bytes < 1024, do: "#{bytes} B"
+  def format_size(bytes) when bytes < 1024 * 1024, do: "#{Float.round(bytes / 1024, 1)} KB"
+  def format_size(bytes), do: "#{Float.round(bytes / (1024 * 1024), 1)} MB"
+
+  def format_datetime({{year, month, day}, {hour, minute, second}}) do
+    "#{year}-#{pad(month)}-#{pad(day)} #{pad(hour)}:#{pad(minute)}:#{pad(second)}"
+  end
+
+  defp pad(num) when num < 10, do: "0#{num}"
+  defp pad(num), do: "#{num}"
+end
diff --git a/lib/labelmaker_web/controllers/labels_html/index.html.heex b/lib/labelmaker_web/controllers/labels_html/index.html.heex
new file mode 100644
index 0000000..0769aa1
--- /dev/null
+++ b/lib/labelmaker_web/controllers/labels_html/index.html.heex
@@ -0,0 +1,74 @@
+<div class="max-w-6xl mx-auto p-6">
+  <div class="flex justify-between items-center mb-6">
+    <h1 class="text-4xl font-bold text-primary">Generated Labels</h1>
+    <a href={~p"/"} class="text-primary hover:underline">← Back to Home</a>
+  </div>
+
+  <%= if Enum.empty?(@labels) do %>
+    <div class="text-center py-12">
+      <p class="text-xl text-gray-600 dark:text-gray-400 mb-4">
+        No labels generated yet.
+      </p>
+      <a
+        href={~p"/"}
+        class="inline-block bg-primary text-fg-light px-4 py-2 rounded hover:bg-highlight focus:ring-fg-light"
+      >
+        Create Your First Label
+      </a>
+    </div>
+  <% else %>
+    <div class="mb-4 text-gray-600 dark:text-gray-400">
+      Total labels: <%= length(@labels) %>
+    </div>
+
+    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+      <%= for label <- @labels do %>
+        <div class="border border-gray-300 dark:border-gray-600 rounded-lg p-4 bg-secondary-light dark:bg-secondary-dark">
+          <div class="mb-3 bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded flex items-center justify-center p-4 min-h-[150px]">
+            <img
+              src={label.url}
+              alt="Label image"
+              class="max-w-full max-h-[200px] object-contain"
+            />
+          </div>
+
+          <div class="space-y-2 text-sm">
+            <div class="flex justify-between">
+              <span class="text-gray-600 dark:text-gray-400">Size:</span>
+              <span class="font-medium text-fg-light dark:text-fg-dark">
+                <%= format_size(label.size) %>
+              </span>
+            </div>
+
+            <div class="flex justify-between">
+              <span class="text-gray-600 dark:text-gray-400">Modified:</span>
+              <span class="font-medium text-fg-light dark:text-fg-dark text-xs">
+                <%= format_datetime(label.modified) %>
+              </span>
+            </div>
+
+            <div class="pt-2 flex gap-2">
+              <a
+                href={label.url}
+                target="_blank"
+                class="flex-1 text-center bg-primary text-fg-light px-3 py-2 rounded text-sm hover:bg-highlight"
+              >
+                View Full Size
+              </a>
+            </div>
+
+            <div class="pt-1">
+              <input
+                type="text"
+                readonly
+                value={label.url}
+                class="w-full text-xs px-2 py-1 border border-gray-300 dark:border-gray-600 rounded bg-white dark:bg-gray-800 text-fg-light dark:text-fg-dark"
+                onclick="this.select()"
+              />
+            </div>
+          </div>
+        </div>
+      <% end %>
+    </div>
+  <% end %>
+</div>
diff --git a/lib/labelmaker_web/router.ex b/lib/labelmaker_web/router.ex
index f5a6d25..2dfd006 100644
--- a/lib/labelmaker_web/router.ex
+++ b/lib/labelmaker_web/router.ex
@@ -18,6 +18,7 @@ defmodule LabelmakerWeb.Router do
     pipe_through :browser
 
     live "/", Home
+    get "/labels", LabelsController, :index
     get "/:label", LabelController, :show
   end
 
diff --git a/test/labelmaker_web/controllers/labels_controller_test.exs b/test/labelmaker_web/controllers/labels_controller_test.exs
new file mode 100644
index 0000000..fed2fb5
--- /dev/null
+++ b/test/labelmaker_web/controllers/labels_controller_test.exs
@@ -0,0 +1,93 @@
+defmodule LabelmakerWeb.LabelsControllerTest do
+  use LabelmakerWeb.ConnCase, async: false
+
+  @label_dir Path.join(:code.priv_dir(:labelmaker), "static/labels")
+
+  setup do
+    # Clean up test images before each test
+    File.rm_rf!(@label_dir)
+    File.mkdir_p!(@label_dir)
+    :ok
+  end
+
+  describe "index" do
+    test "renders empty state when no labels exist", %{conn: conn} do
+      conn = get(conn, ~p"/labels")
+
+      assert html_response(conn, 200) =~ "No labels generated yet"
+      assert html_response(conn, 200) =~ "Create Your First Label"
+    end
+
+    test "lists all generated labels", %{conn: conn} do
+      # Generate some test labels
+      _conn1 = get(conn, ~p"/TestLabel1?color=red")
+      _conn2 = get(conn, ~p"/TestLabel2?color=blue")
+      _conn3 = get(conn, ~p"/TestLabel3?color=green")
+
+      # Visit labels page
+      conn = get(conn, ~p"/labels")
+      html = html_response(conn, 200)
+
+      assert html =~ "Generated Labels"
+      assert html =~ "Total labels: 3"
+    end
+
+    test "displays label information correctly", %{conn: conn} do
+      # Generate a test label
+      _conn = get(conn, ~p"/MyLabel?color=yellow&size=96")
+
+      # Visit labels page
+      conn = get(conn, ~p"/labels")
+      html = html_response(conn, 200)
+
+      # Should show size and modified date
+      assert html =~ "Size:"
+      assert html =~ "Modified:"
+      assert html =~ "View Full Size"
+    end
+
+    test "shows labels sorted by most recent first", %{conn: conn} do
+      # Generate labels with delays to ensure different timestamps
+      _conn1 = get(conn, ~p"/First")
+      Process.sleep(100)
+      _conn2 = get(conn, ~p"/Second")
+      Process.sleep(100)
+      _conn3 = get(conn, ~p"/Third")
+
+      # Visit labels page
+      conn = get(conn, ~p"/labels")
+      html = html_response(conn, 200)
+
+      # Should show all labels
+      assert html =~ "Total labels: 3"
+    end
+
+    test "handles missing labels directory gracefully", %{conn: conn} do
+      # Remove the labels directory entirely
+      File.rm_rf!(@label_dir)
+
+      conn = get(conn, ~p"/labels")
+
+      assert html_response(conn, 200) =~ "No labels generated yet"
+    end
+
+    test "includes link back to home", %{conn: conn} do
+      conn = get(conn, ~p"/labels")
+      html = html_response(conn, 200)
+
+      assert html =~ "Back to Home"
+      assert html =~ ~p"/"
+    end
+
+    test "shows clickable URLs for each label", %{conn: conn} do
+      _conn = get(conn, ~p"/ClickableTest")
+
+      conn = get(conn, ~p"/labels")
+      html = html_response(conn, 200)
+
+      # Should have a URL input field
+      assert html =~ "/labels/"
+      assert html =~ ".png"
+    end
+  end
+end