defmodule ComponentsElixirWeb.StorageLocationsLive do
  @moduledoc """
  LiveView for managing storage locations and AprilTags.
  """
  use ComponentsElixirWeb, :live_view

  alias ComponentsElixir.{Inventory, Auth}
  alias ComponentsElixir.Inventory.{StorageLocation, Hierarchical}
  alias ComponentsElixir.AprilTag

  @impl true
  def mount(_params, session, socket) do
    # Check authentication
    if Auth.authenticated?(session) do
      storage_locations = list_storage_locations()

      {:ok,
       socket
       |> assign(:session, session)
       |> assign(:storage_locations, storage_locations)
       |> assign(:show_add_form, false)
       |> assign(:show_edit_form, false)
       |> assign(:editing_location, nil)
       |> assign(:form, nil)
       |> assign(:apriltag_scanner_open, false)
       |> assign(:scanned_tags, [])
       |> assign(:expanded_locations, MapSet.new())
       |> assign(:page_title, "Storage Location Management")}
    else
      {:ok, socket |> push_navigate(to: ~p"/login")}
    end
  end

  @impl true
  def handle_event("show_add_form", _params, socket) do
    changeset = Inventory.change_storage_location(%StorageLocation{})
    form = to_form(changeset)

    {:noreply,
     socket
     |> assign(:show_add_form, true)
     |> assign(:form, form)
     |> assign(:available_apriltag_ids, AprilTag.available_apriltag_ids())
     |> assign(:apriltag_mode, "auto")}
  end

  def handle_event("hide_add_form", _params, socket) do
    {:noreply,
     socket
     |> assign(:show_add_form, false)
     |> assign(:form, nil)}
  end

  def handle_event("show_edit_form", %{"id" => id}, socket) do
    location = Inventory.get_storage_location!(id)
    # Create a changeset with current values forced into changes for proper form display
    changeset = Inventory.change_storage_location(location, %{
      name: location.name,
      description: location.description,
      parent_id: location.parent_id
    })
    |> Ecto.Changeset.force_change(:parent_id, location.parent_id)

    form = to_form(changeset)

    {:noreply,
     socket
     |> assign(:show_edit_form, true)
     |> assign(:editing_location, location)
     |> assign(:form, form)
     |> assign(:available_apriltag_ids, AprilTag.available_apriltag_ids())
     |> assign(:edit_apriltag_mode, "keep")}
  end

  def handle_event("hide_edit_form", _params, socket) do
    {:noreply,
     socket
     |> assign(:show_edit_form, false)
     |> assign(:editing_location, nil)
     |> assign(:form, nil)}
  end

  def handle_event("save_location", %{"storage_location" => location_params}, socket) do
    # Process AprilTag assignment based on mode
    processed_params = case socket.assigns.apriltag_mode do
      "none" ->
        # Remove any apriltag_id from params to ensure it's nil
        Map.delete(location_params, "apriltag_id")

      "auto" ->
        # Auto-assign next available AprilTag ID
        case AprilTag.next_available_apriltag_id() do
          nil ->
            # No available IDs, proceed without AprilTag
            Map.delete(location_params, "apriltag_id")
          apriltag_id ->
            Map.put(location_params, "apriltag_id", apriltag_id)
        end

      "manual" ->
        # Use the manually entered apriltag_id (validation will be handled by changeset)
        location_params

      _ ->
        # Fallback: remove apriltag_id
        Map.delete(location_params, "apriltag_id")
    end

    case Inventory.create_storage_location(processed_params) do
      {:ok, _location} ->
        {:noreply,
         socket
         |> put_flash(:info, "Storage location created successfully")
         |> assign(:show_add_form, false)
         |> assign(:form, nil)
         |> reload_storage_locations()}

      {:error, changeset} ->
        {:noreply, assign(socket, :form, to_form(changeset))}
    end
  end

  def handle_event("save_edit", %{"storage_location" => location_params}, socket) do
    case Inventory.update_storage_location(socket.assigns.editing_location, location_params) do
      {:ok, _location} ->
        {:noreply,
         socket
         |> put_flash(:info, "Storage location updated successfully")
         |> assign(:show_edit_form, false)
         |> assign(:editing_location, nil)
         |> assign(:form, nil)
         |> reload_storage_locations()}

      {:error, changeset} ->
        {:noreply, assign(socket, :form, to_form(changeset))}
    end
  end

  def handle_event("delete_location", %{"id" => id}, socket) do
    location = Inventory.get_storage_location!(id)

    case Inventory.delete_storage_location(location) do
      {:ok, _deleted_location} ->
        {:noreply,
         socket
         |> put_flash(:info, "Storage location deleted successfully")
         |> reload_storage_locations()}

      {:error, _changeset} ->
        {:noreply, put_flash(socket, :error, "Cannot delete storage location - it may have components assigned or child locations")}
    end
  end

  def handle_event("open_apriltag_scanner", _params, socket) do
    {:noreply, assign(socket, :apriltag_scanner_open, true)}
  end

  def handle_event("close_apriltag_scanner", _params, socket) do
    {:noreply, assign(socket, :apriltag_scanner_open, false)}
  end

  def handle_event("apriltag_scanned", %{"apriltag_id" => apriltag_id_str}, socket) do
    case Integer.parse(apriltag_id_str) do
      {apriltag_id, ""} when apriltag_id >= 0 and apriltag_id <= 586 ->
        case Inventory.get_storage_location_by_apriltag_id(apriltag_id) do
          nil ->
            {:noreply, put_flash(socket, :error, "Storage location not found for AprilTag ID: #{apriltag_id}")}

          location ->
            scanned_tags = [%{apriltag_id: apriltag_id, location: location} | socket.assigns.scanned_tags]

            {:noreply,
             socket
             |> assign(:scanned_tags, scanned_tags)
             |> put_flash(:info, "Scanned: #{location.path}")}
        end

      _ ->
        {:noreply, put_flash(socket, :error, "Invalid AprilTag ID: #{apriltag_id_str}")}
    end
  end

  def handle_event("clear_scanned", _params, socket) do
    {:noreply, assign(socket, :scanned_tags, [])}
  end

  def handle_event("toggle_expand", %{"id" => id}, socket) do
    location_id = String.to_integer(id)
    expanded_locations = socket.assigns.expanded_locations

    new_expanded = if MapSet.member?(expanded_locations, location_id) do
      MapSet.delete(expanded_locations, location_id)
    else
      MapSet.put(expanded_locations, location_id)
    end

    {:noreply, assign(socket, :expanded_locations, new_expanded)}
  end

  def handle_event("set_apriltag_mode", %{"mode" => mode}, socket) do
    {:noreply, assign(socket, :apriltag_mode, mode)}
  end

  def handle_event("set_edit_apriltag_mode", %{"mode" => mode}, socket) do
    # Clear the apriltag_id field when switching modes
    form = case mode do
      "remove" ->
        socket.assigns.form
        |> Phoenix.Component.to_form()
        |> Map.put(:params, Map.put(socket.assigns.form.params || %{}, "apriltag_id", nil))
      "keep" ->
        current_id = socket.assigns.editing_location.apriltag_id
        socket.assigns.form
        |> Phoenix.Component.to_form()
        |> Map.put(:params, Map.put(socket.assigns.form.params || %{}, "apriltag_id", current_id))
      _ ->
        socket.assigns.form
    end

    {:noreply,
     socket
     |> assign(:edit_apriltag_mode, mode)
     |> assign(:form, form)}
  end

  def handle_event("download_apriltag", %{"id" => id}, socket) do
    case Inventory.get_storage_location!(id) do
      %{apriltag_id: nil} ->
        {:noreply, put_flash(socket, :error, "No AprilTag assigned to this location")}

      location ->
        case AprilTag.get_apriltag_url(location) do
          nil ->
            {:noreply, put_flash(socket, :error, "Failed to get AprilTag URL")}

          apriltag_url ->
            filename = "#{location.name |> String.replace(" ", "_")}_AprilTag_#{location.apriltag_id}.svg"

            # Send file download to browser
            {:noreply,
             socket
             |> push_event("download_apriltag", %{
               filename: filename,
               url: apriltag_url,
               apriltag_id: location.apriltag_id
             })}
        end
    end
  end

  defp reload_storage_locations(socket) do
    storage_locations = list_storage_locations()
    assign(socket, :storage_locations, storage_locations)
  end

  defp parent_location_options(storage_locations, editing_location_id \\ nil) do
    Hierarchical.parent_select_options(
      storage_locations,
      editing_location_id,
      &(&1.parent),
      "No parent (Root location)"
    )
  end

  defp location_display_name(location) do
    StorageLocation.full_path(location)
  end

  defp root_storage_locations(storage_locations) do
    Hierarchical.root_entities(storage_locations, &(&1.parent_id))
  end

  defp child_storage_locations(storage_locations, parent_id) do
    Hierarchical.child_entities(storage_locations, parent_id, &(&1.parent_id))
  end

  defp count_components_in_location(location_id) do
    Inventory.count_components_in_storage_location(location_id)
  end

  defp get_apriltag_url(location) do
    AprilTag.get_apriltag_url(location)
  end

  # Component for rendering individual storage location items with QR code support
  defp location_item(assigns) do
    # Calculate margin based on depth (0 = no margin, 1+ = incremental margin)
    margin_left = if assigns.depth == 0, do: 0, else: 32 + assigns.depth * 16

    # Determine border style based on depth
    border_class = if assigns.depth > 0, do: "border-l-2 border-base-300 pl-6", else: ""

    # Icon size and button size based on depth
    {icon_size, button_size, text_size, title_tag} = case assigns.depth do
      0 -> {"w-5 h-5", "p-2", "text-lg", "h3"}
      1 -> {"w-4 h-4", "p-1.5", "text-base", "h4"}
      _ -> {"w-3 h-3", "p-1", "text-sm", "h5"}
    end

    # Different icons based on level - QR code is always present for storage locations
    icon_name = case assigns.depth do
      0 -> "hero-building-office"  # Shelf/Room
      1 -> "hero-archive-box"      # Drawer/Cabinet
      _ -> "hero-cube"             # Box/Container
    end

    children = child_storage_locations(assigns.storage_locations, assigns.location.id)
    has_children = !Enum.empty?(children)
    is_expanded = MapSet.member?(assigns.expanded_locations, assigns.location.id)

    # Calculate component counts including descendants
    {self_count, children_count, _total_count} = Hierarchical.count_with_descendants(
      assigns.location.id,
      assigns.storage_locations,
      &(&1.parent_id),
      &count_components_in_location/1
    )

    # Format count display
    count_display = Hierarchical.format_count_display(self_count, children_count, is_expanded)

    assigns = assigns
    |> assign(:margin_left, margin_left)
    |> assign(:border_class, border_class)
    |> assign(:icon_size, icon_size)
    |> assign(:button_size, button_size)
    |> assign(:text_size, text_size)
    |> assign(:title_tag, title_tag)
    |> assign(:icon_name, icon_name)
    |> assign(:children, children)
    |> assign(:has_children, has_children)
    |> assign(:is_expanded, is_expanded)
    |> assign(:count_display, count_display)

    ~H"""
    <div class={[@border_class, @depth > 0 && "mt-4"]} style={"margin-left: #{@margin_left}px"}>
      <div class="flex items-start justify-between p-2 hover:bg-base-50 rounded-md">
        <div class="flex items-start flex-1 space-x-2">
          <!-- Expand/Collapse button - always aligned to top -->
          <%= if @has_children do %>
            <button
              phx-click="toggle_expand"
              phx-value-id={@location.id}
              class="flex-shrink-0 p-1 hover:bg-base-200 rounded mt-0.5"
            >
              <%= if @is_expanded do %>
                <.icon name="hero-chevron-down" class="w-4 h-4 text-base-content/60" />
              <% else %>
                <.icon name="hero-chevron-right" class="w-4 h-4 text-base-content/60" />
              <% end %>
            </button>
          <% else %>
            <div class="w-6"></div> <!-- Spacer for alignment -->
          <% end %>

          <.icon name={@icon_name} class={"#{@icon_size} #{if @depth == 0, do: "text-primary", else: "text-base-content/60"} mt-0.5"} />

          <!-- Content area - always starts at same vertical position -->
          <div class="flex-1">
            <!-- Minimized view (default) -->
            <%= unless @is_expanded do %>
              <div class="flex items-center justify-between">
                <div class="flex items-center space-x-3">
                  <%= if @title_tag == "h3" do %>
                    <h3 class={"#{@text_size} font-medium"}>
                      <.link
                        navigate={~p"/?storage_location_id=#{@location.id}"}
                        class={"#{if @depth == 0, do: "text-base-content", else: "text-base-content/80"} hover:text-primary hover:underline"}
                      >
                        {@location.name}
                      </.link>
                    </h3>
                  <% else %>
                    <h4 class={"#{@text_size} font-medium"}>
                      <.link
                        navigate={~p"/?storage_location_id=#{@location.id}"}
                        class={"#{if @depth == 0, do: "text-base-content", else: "text-base-content/80"} hover:text-primary hover:underline"}
                      >
                        {@location.name}
                      </.link>
                    </h4>
                  <% end %>
                  <span class="text-xs text-base-content/50">
                    ({@count_display})
                  </span>
                  <%= if @location.apriltag_id do %>
                    <span class="text-xs bg-base-200 text-base-content/80 px-2 py-1 rounded">
                      AprilTag: {@location.apriltag_id}
                    </span>
                  <% end %>
                </div>
                <div class="flex items-center space-x-2 ml-4">
                  <button
                    phx-click="show_edit_form"
                    phx-value-id={@location.id}
                    class="inline-flex items-center p-1.5 border border-transparent rounded-full shadow-sm text-white bg-blue-600 hover:bg-blue-700"
                  >
                    <.icon name="hero-pencil" class="w-3 h-3" />
                  </button>
                  <button
                    phx-click="delete_location"
                    phx-value-id={@location.id}
                    data-confirm="Are you sure you want to delete this storage location? This action cannot be undone."
                    class="inline-flex items-center p-1.5 border border-transparent rounded-full shadow-sm text-white bg-red-600 hover:bg-red-700"
                  >
                    <.icon name="hero-trash" class="w-3 h-3" />
                  </button>
                </div>
              </div>
            <% end %>

            <!-- Expanded view -->
            <%= if @is_expanded do %>
              <div class="flex items-start justify-between">
                <div class="flex-1">
                  <%= if @title_tag == "h3" do %>
                    <h3 class={"#{@text_size} font-medium"}>
                      <.link
                        navigate={~p"/?storage_location_id=#{@location.id}"}
                        class={"#{if @depth == 0, do: "text-base-content", else: "text-base-content/80"} hover:text-primary hover:underline"}
                      >
                        {@location.name}
                      </.link>
                    </h3>
                  <% else %>
                    <h4 class={"#{@text_size} font-medium"}>
                      <.link
                        navigate={~p"/?storage_location_id=#{@location.id}"}
                        class={"#{if @depth == 0, do: "text-base-content", else: "text-base-content/80"} hover:text-primary hover:underline"}
                      >
                        {@location.name}
                      </.link>
                    </h4>
                  <% end %>
                  <%= if @location.description do %>
                    <p class="text-sm text-base-content/60 mt-1">{@location.description}</p>
                  <% end %>
                  <div class="flex items-center space-x-2 mt-1">
                    <p class="text-xs text-base-content/50">
                      {@count_display}
                    </p>
                    <%= if @location.apriltag_id do %>
                      <span class="text-xs bg-base-200 text-base-content/80 px-2 py-1 rounded">
                        AprilTag: {@location.apriltag_id}
                      </span>
                    <% end %>
                  </div>
                </div>
                <div class="flex items-start space-x-3 ml-4">
                  <%= if @location.apriltag_id do %>
                    <%= if get_apriltag_url(@location) do %>
                      <div class="apriltag-container flex-shrink-0">
                        <img
                          src={get_apriltag_url(@location)}
                          alt={"AprilTag for #{@location.name}"}
                          class="w-16 h-auto border border-base-300 rounded bg-base-100"
                          onerror="this.style.display='none'"
                        />
                      </div>
                    <% else %>
                      <div class="w-16 h-16 border border-base-300 rounded bg-base-200 flex items-center justify-center flex-shrink-0">
                        <.icon name="hero-qr-code" class="w-8 h-8 text-base-content/50" />
                      </div>
                    <% end %>
                    <button
                      phx-click="download_apriltag"
                      phx-value-id={@location.id}
                      class="inline-flex items-center px-3 py-1.5 border border-base-300 rounded-md shadow-sm text-sm font-medium text-base-content bg-base-100 hover:bg-base-200 flex-shrink-0"
                      title="Download AprilTag"
                    >
                      <.icon name="hero-arrow-down-tray" class="w-4 h-4 mr-1.5" />
                      Download
                    </button>
                  <% end %>
                  <div class="flex items-center space-x-2">
                    <button
                      phx-click="show_edit_form"
                      phx-value-id={@location.id}
                      class="inline-flex items-center p-2 border border-transparent rounded-full shadow-sm text-white bg-blue-600 hover:bg-blue-700"
                    >
                      <.icon name="hero-pencil" class="w-4 h-4" />
                    </button>
                    <button
                      phx-click="delete_location"
                      phx-value-id={@location.id}
                      data-confirm="Are you sure you want to delete this storage location? This action cannot be undone."
                      class="inline-flex items-center p-2 border border-transparent rounded-full shadow-sm text-white bg-red-600 hover:bg-red-700"
                    >
                      <.icon name="hero-trash" class="w-4 h-4" />
                    </button>
                  </div>
                </div>
              </div>
            <% end %>
          </div>
        </div>
      </div>

      <!-- Render children recursively (only when expanded) -->
      <%= if @is_expanded do %>
        <%= for child <- @children do %>
          <.location_item location={child} storage_locations={@storage_locations} expanded_locations={@expanded_locations} depth={@depth + 1} />
        <% end %>
      <% end %>
    </div>
    """
  end

  defp list_storage_locations do
    Inventory.list_storage_locations()
  end

  @impl true
  def render(assigns) do
    ~H"""
    <div class="min-h-screen bg-base-200">
      <!-- Header -->
      <div class="bg-base-100 shadow">
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div class="flex justify-between items-center py-6">
            <div class="flex items-center space-x-4">
              <.link
                navigate={~p"/"}
                class="text-base-content/60 hover:text-base-content"
              >
                <.icon name="hero-arrow-left" class="w-5 h-5" />
              </.link>
              <h1 class="text-3xl font-bold text-base-content">
                Storage Location Management
              </h1>
            </div>
            <div class="flex items-center space-x-4">
              <button
                phx-click="open_qr_scanner"
                class="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md shadow-sm text-white bg-green-600 hover:bg-green-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-green-500"
              >
                <.icon name="hero-qr-code" class="w-4 h-4 mr-2" /> Scan QR
              </button>
              <button
                phx-click="show_add_form"
                class="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md shadow-sm text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
              >
                <.icon name="hero-plus" class="w-4 h-4 mr-2" /> Add Location
              </button>
              <.link
                navigate={~p"/"}
                class="inline-flex items-center px-4 py-2 border border-base-300 text-sm font-medium rounded-md text-base-content bg-base-100 hover:bg-base-200 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary"
              >
                <.icon name="hero-cube-transparent" class="w-4 h-4 mr-2" /> Components
              </.link>
            </div>
          </div>
        </div>
      </div>

      <!-- Add Location Modal -->
      <%= if @show_add_form do %>
        <div class="fixed inset-0 bg-base-content/50 overflow-y-auto h-full w-full z-50">
          <div class="relative top-20 mx-auto p-5 border border-base-300 w-11/12 md:w-1/2 shadow-lg rounded-md bg-base-100">
            <div class="mt-3">
              <div class="flex justify-between items-center mb-4">
                <h3 class="text-lg font-medium text-base-content">Add New Storage Location</h3>
                <button
                  phx-click="hide_add_form"
                  class="text-base-content/60 hover:text-base-content"
                >
                  <.icon name="hero-x-mark" class="w-6 h-6" />
                </button>
              </div>

              <.form for={@form} phx-submit="save_location" class="space-y-4">
                <div>
                  <label class="block text-sm font-medium text-base-content">Name</label>
                  <.input field={@form[:name]} type="text" required />
                </div>

                <div>
                  <label class="block text-sm font-medium text-base-content">Parent Location</label>
                  <.input
                    field={@form[:parent_id]}
                    type="select"
                    options={parent_location_options(@storage_locations)}
                  />
                </div>

                <div>
                  <label class="block text-sm font-medium text-base-content">Description</label>
                  <.input field={@form[:description]} type="textarea" />
                </div>

                <div>
                  <label class="block text-sm font-medium text-base-content">AprilTag ID (Optional)</label>
                  <div class="space-y-2">
                    <div class="flex items-center space-x-2">
                      <input
                        type="radio"
                        name="apriltag_assignment"
                        value="none"
                        id="apriltag_none"
                        checked={@apriltag_mode == "none"}
                        class="h-4 w-4 text-primary focus:ring-primary border-base-300"
                        phx-click="set_apriltag_mode"
                        phx-value-mode="none"
                      />
                      <label for="apriltag_none" class="text-sm text-base-content">
                        No AprilTag
                      </label>
                    </div>
                    <div class="flex items-center space-x-2">
                      <input
                        type="radio"
                        name="apriltag_assignment"
                        value="auto"
                        id="apriltag_auto"
                        checked={@apriltag_mode == "auto"}
                        class="h-4 w-4 text-primary focus:ring-primary border-base-300"
                        phx-click="set_apriltag_mode"
                        phx-value-mode="auto"
                      />
                      <label for="apriltag_auto" class="text-sm text-base-content">
                        Auto-assign next available ID
                      </label>
                    </div>
                    <div class="flex items-center space-x-2">
                      <input
                        type="radio"
                        name="apriltag_assignment"
                        value="manual"
                        id="apriltag_manual"
                        checked={@apriltag_mode == "manual"}
                        class="h-4 w-4 text-primary focus:ring-primary border-base-300"
                        phx-click="set_apriltag_mode"
                        phx-value-mode="manual"
                      />
                      <label for="apriltag_manual" class="text-sm text-base-content">
                        Choose specific ID
                      </label>
                    </div>
                    <%= if @apriltag_mode == "manual" do %>
                      <div class="ml-6 space-y-2">
                        <.input
                          field={@form[:apriltag_id]}
                          type="number"
                          min="0"
                          max="586"
                          placeholder="Enter ID (0-586)"
                          class="w-32"
                        />
                        <div class="text-xs text-base-content/60">
                          Available IDs: <%= length(@available_apriltag_ids) %> of 587
                          <%= if length(@available_apriltag_ids) < 20 do %>
                            <br/>Next available: <%= @available_apriltag_ids |> Enum.take(10) |> Enum.join(", ") %>
                            <%= if length(@available_apriltag_ids) > 10, do: "..." %>
                          <% end %>
                        </div>
                      </div>
                    <% end %>
                  </div>
                </div>

                <div class="flex justify-end space-x-3 pt-4">
                  <button
                    type="button"
                    phx-click="hide_add_form"
                    class="px-4 py-2 border border-base-300 rounded-md text-sm font-medium text-base-content hover:bg-base-200"
                  >
                    Cancel
                  </button>
                  <button
                    type="submit"
                    class="px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-primary-content bg-primary hover:bg-primary/90"
                  >
                    Save Location
                  </button>
                </div>
              </.form>
            </div>
          </div>
        </div>
      <% end %>

      <!-- Edit Location Modal -->
      <%= if @show_edit_form do %>
        <div class="fixed inset-0 bg-base-content/50 overflow-y-auto h-full w-full z-50">
          <div class="relative top-20 mx-auto p-5 border border-base-300 w-11/12 md:w-1/2 shadow-lg rounded-md bg-base-100">
            <div class="mt-3">
              <div class="flex justify-between items-center mb-4">
                <h3 class="text-lg font-medium text-base-content">Edit Storage Location</h3>
                <button
                  phx-click="hide_edit_form"
                  class="text-base-content/60 hover:text-base-content"
                >
                  <.icon name="hero-x-mark" class="w-6 h-6" />
                </button>
              </div>

              <.form for={@form} phx-submit="save_edit" class="space-y-4">
                <div>
                  <label class="block text-sm font-medium text-base-content">Name</label>
                  <.input field={@form[:name]} type="text" required />
                </div>

                <div>
                  <label class="block text-sm font-medium text-base-content">Parent Location</label>
                  <.input
                    field={@form[:parent_id]}
                    type="select"
                    options={parent_location_options(@storage_locations, @editing_location.id)}
                  />
                </div>

                <div>
                  <label class="block text-sm font-medium text-base-content">Description</label>
                  <.input field={@form[:description]} type="textarea" />
                </div>

                <div>
                  <label class="block text-sm font-medium text-base-content">AprilTag ID</label>
                  <div class="space-y-2">
                    <div class="flex items-center space-x-2">
                      <input
                        type="radio"
                        name="edit_apriltag_assignment"
                        value="keep"
                        id="edit_apriltag_keep"
                        checked={@edit_apriltag_mode == "keep"}
                        class="h-4 w-4 text-primary focus:ring-primary border-base-300"
                        phx-click="set_edit_apriltag_mode"
                        phx-value-mode="keep"
                      />
                      <label for="edit_apriltag_keep" class="text-sm text-base-content">
                        Keep current assignment
                      </label>
                    </div>
                    <div class="flex items-center space-x-2">
                      <input
                        type="radio"
                        name="edit_apriltag_assignment"
                        value="change"
                        id="edit_apriltag_change"
                        checked={@edit_apriltag_mode == "change"}
                        class="h-4 w-4 text-primary focus:ring-primary border-base-300"
                        phx-click="set_edit_apriltag_mode"
                        phx-value-mode="change"
                      />
                      <label for="edit_apriltag_change" class="text-sm text-base-content">
                        Change to different ID
                      </label>
                    </div>
                    <div class="flex items-center space-x-2">
                      <input
                        type="radio"
                        name="edit_apriltag_assignment"
                        value="remove"
                        id="edit_apriltag_remove"
                        checked={@edit_apriltag_mode == "remove"}
                        class="h-4 w-4 text-primary focus:ring-primary border-base-300"
                        phx-click="set_edit_apriltag_mode"
                        phx-value-mode="remove"
                      />
                      <label for="edit_apriltag_remove" class="text-sm text-base-content">
                        Remove AprilTag assignment
                      </label>
                    </div>
                    <%= if @edit_apriltag_mode == "change" do %>
                      <div class="ml-6 space-y-2">
                        <.input
                          field={@form[:apriltag_id]}
                          type="number"
                          min="0"
                          max="586"
                          placeholder="Enter new ID (0-586)"
                          class="w-32"
                        />
                        <div class="text-xs text-base-content/60">
                          Available IDs: <%= length(@available_apriltag_ids) %> of 587
                        </div>
                      </div>
                    <% end %>
                    <p class="text-xs text-base-content/60 mt-1">
                      Current: <%= if @editing_location.apriltag_id, do: "ID #{@editing_location.apriltag_id}", else: "None" %>
                    </p>
                  </div>
                </div>

                <div class="flex justify-end space-x-3 pt-4">
                  <button
                    type="button"
                    phx-click="hide_edit_form"
                    class="px-4 py-2 border border-base-300 rounded-md text-sm font-medium text-base-content hover:bg-base-200"
                  >
                    Cancel
                  </button>
                  <button
                    type="submit"
                    class="px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-primary-content bg-primary hover:bg-primary/90"
                  >
                    Update Location
                  </button>
                </div>
              </.form>
            </div>
          </div>
        </div>
      <% end %>

      <!-- AprilTag Scanner Modal -->
      <%= if @apriltag_scanner_open do %>
        <div class="fixed inset-0 bg-base-content/30 bg-opacity-50 overflow-y-auto h-full w-full z-50">
          <div class="relative top-10 mx-auto p-5 border border-base-300 w-11/12 md:w-1/2 shadow-lg rounded-md bg-base-100">
            <div class="mt-3">
              <div class="flex justify-between items-center mb-4">
                <h3 class="text-lg font-medium text-base-content">AprilTag Scanner</h3>
                <button
                  phx-click="close_apriltag_scanner"
                  class="text-base-content/50 hover:text-base-content"
                >
                  <.icon name="hero-x-mark" class="w-6 h-6" />
                </button>
              </div>

              <!-- AprilTag Scanner Interface -->
              <div class="border-2 border-dashed border-base-300 rounded-lg p-6 text-center">
                <.icon name="hero-qr-code" class="mx-auto h-12 w-12 text-base-content/50" />
                <p class="mt-2 text-sm text-base-content/70">Camera AprilTag scanner would go here</p>
                <p class="text-xs text-base-content/60 mt-1">In a real implementation, this would use JavaScript AprilTag detection</p>

                <!-- Test buttons for demo -->
                <div class="mt-4 space-y-2">
                  <p class="text-sm font-medium text-base-content/80">Test with sample AprilTag IDs:</p>
                  <button
                    phx-click="apriltag_scanned"
                    phx-value-apriltag_id="0"
                    class="block w-full px-3 py-2 text-sm bg-base-200 hover:bg-base-300 rounded"
                  >
                    Scan AprilTag ID 0
                  </button>
                  <button
                    phx-click="apriltag_scanned"
                    phx-value-apriltag_id="1"
                    class="block w-full px-3 py-2 text-sm bg-base-200 hover:bg-base-300 rounded"
                  >
                    Scan AprilTag ID 1
                  </button>
                </div>
              </div>
            </div>
          </div>
        </div>
      <% end %>

      <!-- Scanned Tags Display -->
      <%= if length(@scanned_tags) > 0 do %>
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-4">
          <div class="bg-green-50 border border-green-200 rounded-lg p-4">
            <div class="flex justify-between items-center mb-2">
              <h3 class="text-lg font-medium text-green-800">Recently Scanned</h3>
              <button
                phx-click="clear_scanned"
                class="text-sm text-green-600 hover:text-green-800"
              >
                Clear
              </button>
            </div>
            <div class="space-y-2">
              <div :for={scan <- @scanned_tags} class="flex items-center justify-between bg-base-100 p-2 rounded border border-base-300">
                <div>
                  <span class="font-medium text-base-content">{location_display_name(scan.location)}</span>
                  <span class="text-sm text-base-content/70 ml-2">(AprilTag ID {scan.apriltag_id})</span>
                </div>
                <span class="text-xs text-green-600 bg-green-100 px-2 py-1 rounded">
                  Level <%= Hierarchical.compute_level(scan.location, &(&1.parent)) %>
                </span>
              </div>
            </div>
          </div>
        </div>
      <% end %>

      <!-- Storage Locations List -->
      <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
        <div class="bg-base-100 shadow overflow-hidden sm:rounded-md">
          <div class="px-6 py-4 border-b border-base-300">
            <h2 class="text-lg font-medium text-base-content">Storage Location Hierarchy</h2>
            <p class="text-sm text-base-content/60 mt-1">Manage your physical storage locations and AprilTags</p>
          </div>

          <%= if Enum.empty?(@storage_locations) do %>
            <div class="text-center py-12">
              <.icon name="hero-building-office" class="mx-auto h-12 w-12 text-base-content/50" />
              <h3 class="mt-2 text-sm font-medium text-base-content">No storage locations</h3>
              <p class="mt-1 text-sm text-base-content/60">
                Get started by creating your first storage location.
              </p>
              <div class="mt-6">
                <button
                  phx-click="show_add_form"
                  class="inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700"
                >
                  <.icon name="hero-plus" class="w-4 h-4 mr-2" />
                  Add Location
                </button>
              </div>
            </div>
          <% else %>
            <div class="divide-y divide-base-300">
              <!-- Recursive Storage Location Tree -->
              <%= for location <- root_storage_locations(@storage_locations) do %>
                <div class="px-6 py-4">
                  <.location_item location={location} storage_locations={@storage_locations} expanded_locations={@expanded_locations} depth={0} />
                </div>
              <% end %>
            </div>
          <% end %>
        </div>
      </div>
    </div>
    """
  end
end