defmodule AprsmeWeb.CoreComponents do
  @moduledoc """
  Provides core UI components.

  The components in this module use Tailwind CSS, a utility-first CSS framework.
  See the [Tailwind CSS documentation](https://tailwindcss.com) to learn how to
  customize the generated components in this module.

  Icons are provided by [heroicons](https://heroicons.com), vendored in priv/heroicons/.
  """
  use Phoenix.Component
  use Gettext, backend: AprsmeWeb.Gettext

  alias Phoenix.HTML.Form
  alias Phoenix.LiveView.JS

  @doc """
  Renders a Heroicon SVG inline from priv/heroicons/.
  SVGs are loaded from trusted vendored heroicons directory and are safe to render as raw HTML.
  Usage: <.icon name="arrow-left" outline={true} class="h-5 w-5" />
  """
  attr :name, :string, required: true
  attr :outline, :boolean, default: true
  attr :class, :string, default: nil

  def icon(%{name: name, outline: outline, class: class} = assigns) do
    style = if outline, do: "outline", else: "solid"

    path =
      Path.join([
        :aprsme |> :code.priv_dir() |> to_string(),
        "heroicons/24",
        style,
        name <> ".svg"
      ])

    svg =
      case File.read(path) do
        {:ok, contents} ->
          # Insert class attribute if not present
          # SVG is from trusted vendored heroicons, safe to modify and render
          Regex.replace(~r/<svg([^>]*?)>/, contents, fn _, attrs ->
            add_class_to_svg_tag(attrs, class)
          end)

        _ ->
          "<!-- icon not found: #{name} -->"
      end

    assigns = assign(assigns, :svg, Phoenix.HTML.raw(svg))

    ~H"""
    {@svg}
    """
  end

  @doc """
  Renders a modal.

  ## Examples

      <.modal id="confirm-modal">
        Are you sure?
        <:confirm>OK</:confirm>
        <:cancel>Cancel</:cancel>
      </.modal>

  JS commands may be passed to the `:on_cancel` and `on_confirm` attributes
  for the caller to react to each button press, for example:

      <.modal id="confirm" on_confirm={JS.push("delete")} on_cancel={JS.navigate(~p"/posts")}>
        Are you sure you?
        <:confirm>OK</:confirm>
        <:cancel>Cancel</:cancel>
      </.modal>
  """
  attr :id, :string, required: true
  attr :show, :boolean, default: false
  attr :on_cancel, JS, default: %JS{}
  attr :on_confirm, JS, default: %JS{}

  slot :inner_block, required: true
  slot :title
  slot :subtitle
  slot :confirm
  slot :cancel

  def modal(assigns) do
    ~H"""
    <div id={@id} phx-mounted={@show && show_modal(@id)} class="relative z-50 hidden">
      <div id={"#{@id}-bg"} class="fixed inset-0 bg-zinc-50/90 transition-opacity" aria-hidden="true" />
      <div
        class="fixed inset-0 overflow-y-auto"
        aria-labelledby={"#{@id}-title"}
        aria-describedby={"#{@id}-description"}
        role="dialog"
        aria-modal="true"
        tabindex="0"
      >
        <div class="flex min-h-full items-center justify-center">
          <div class="w-full max-w-3xl p-4 sm:p-6 lg:py-8">
            <.focus_wrap
              id={"#{@id}-container"}
              phx-mounted={@show && show_modal(@id)}
              phx-window-keydown={hide_modal(@on_cancel, @id)}
              phx-key="escape"
              phx-click-away={hide_modal(@on_cancel, @id)}
              class="hidden relative rounded-2xl bg-white p-14 shadow-lg shadow-zinc-700/10 ring-1 ring-zinc-700/10 transition"
            >
              <div class="absolute top-6 right-5">
                <button
                  phx-click={hide_modal(@on_cancel, @id)}
                  type="button"
                  class="-m-3 flex-none p-3 opacity-20 hover:opacity-40"
                  aria-label={gettext("close")}
                >
                  <.icon name="x-mark" outline={false} class="h-5 w-5 stroke-current" />
                </button>
              </div>
              <div id={"#{@id}-content"}>
                <header :if={@title != []}>
                  <h1 id={"#{@id}-title"} class="text-lg font-semibold leading-8 text-zinc-800">
                    {render_slot(@title)}
                  </h1>
                  <p :if={@subtitle != []} class="mt-2 text-sm leading-6 text-zinc-600">
                    {render_slot(@subtitle)}
                  </p>
                </header>
                {render_slot(@inner_block)}
                <div :if={@confirm != [] or @cancel != []} class="ml-6 mb-4 flex items-center gap-5">
                  <.button
                    :for={confirm <- @confirm}
                    id={"#{@id}-confirm"}
                    phx-click={@on_confirm}
                    phx-disable-with
                    class="py-2 px-3"
                  >
                    {render_slot(confirm)}
                  </.button>
                  <.link
                    :for={cancel <- @cancel}
                    phx-click={hide_modal(@on_cancel, @id)}
                    class="text-sm font-semibold leading-6 text-zinc-900 hover:text-zinc-700"
                  >
                    {render_slot(cancel)}
                  </.link>
                </div>
              </div>
            </.focus_wrap>
          </div>
        </div>
      </div>
    </div>
    """
  end

  @doc """
  Renders flash notices.

  ## Examples

      <.flash kind={:info} flash={@flash} />
      <.flash kind={:info} phx-mounted={show("#flash")}>Welcome Back!</.flash>
  """
  attr :id, :string, default: "flash", doc: "the optional id of flash container"
  attr :flash, :map, default: %{}, doc: "the map of flash messages to display"
  attr :title, :string, default: nil
  attr :kind, :atom, values: [:info, :error], doc: "used for styling and flash lookup"
  attr :autoshow, :boolean, default: true, doc: "whether to auto show the flash on mount"
  attr :close, :boolean, default: true, doc: "whether the flash can be closed"
  attr :rest, :global, doc: "the arbitrary HTML attributes to add to the flash container"

  slot :inner_block, doc: "the optional inner block that renders the flash message"

  def flash(assigns) do
    ~H"""
    <div
      :if={msg = render_slot(@inner_block) || Phoenix.Flash.get(@flash, @kind)}
      id={@id}
      phx-mounted={@autoshow && show("##{@id}")}
      phx-click={JS.push("lv:clear-flash", value: %{key: @kind}) |> hide("#flash")}
      role="alert"
      class={[
        "fixed hidden top-2 right-2 w-80 sm:w-96 z-[9999] rounded-lg p-3 shadow-md shadow-zinc-900/5 ring-1",
        @kind == :info && "bg-emerald-50 text-emerald-800 ring-emerald-500 fill-cyan-900",
        @kind == :error && "bg-rose-50 p-3 text-rose-900 shadow-md ring-rose-500 fill-rose-900"
      ]}
      {@rest}
    >
      <p :if={@title} class="flex items-center gap-1.5 text-[0.8125rem] font-semibold leading-6">
        <.icon name="information-circle" outline={true} class="h-4 w-4" />
        <.icon name="exclamation-circle" outline={true} class="h-4 w-4" />
        {@title}
      </p>
      <p class="mt-2 text-[0.8125rem] leading-5">{msg}</p>
      <button :if={@close} type="button" class="group absolute top-2 right-1 p-2" aria-label={gettext("close")}>
        <.icon name="x-mark" outline={false} class="h-5 w-5 stroke-current opacity-40 group-hover:opacity-70" />
      </button>
    </div>
    """
  end

  @doc """
  Renders a simple form.

  ## Examples

      <.simple_form :let={f} for={%{}} as={:user} phx-change="validate" phx-submit="save">
        <.input field={{f, :email}} label="Email"/>
        <.input field={{f, :username}} label="Username" />
        <:actions>
          <.button>Save</.button>
        </:actions>
      </.simple_form>
  """
  attr :for, :any, default: nil, doc: "the datastructure for the form"
  attr :as, :any, default: nil, doc: "the server side parameter to collect all input under"

  attr :rest, :global,
    include: ~w(autocomplete name rel action enctype method novalidate target),
    doc: "the arbitrary HTML attributes to apply to the form tag"

  slot :inner_block, required: true
  slot :actions, doc: "the slot for form actions, such as a submit button"

  def simple_form(assigns) do
    ~H"""
    <.form :let={f} for={@for} as={@as} {@rest}>
      <div class="space-y-8 mt-10">
        {render_slot(@inner_block, f)}
        <div :for={action <- @actions} class="mt-2 flex items-center justify-between gap-6">
          {render_slot(action, f)}
        </div>
      </div>
    </.form>
    """
  end

  @doc """
  Renders a button.

  ## Examples

      <.button>Send!</.button>
      <.button phx-click="go" class="ml-2">Send!</.button>
  """
  attr :type, :string, default: nil
  attr :class, :string, default: nil
  attr :rest, :global, include: ~w(disabled form name value)

  slot :inner_block, required: true

  def button(assigns) do
    ~H"""
    <button
      type={@type}
      class={[
        "phx-submit-loading:opacity-75 rounded-lg bg-zinc-900 hover:bg-zinc-700 py-2 px-3",
        "text-sm font-semibold leading-6 text-white active:text-white/80",
        @class
      ]}
      {@rest}
    >
      {render_slot(@inner_block)}
    </button>
    """
  end

  @doc """
  Renders an input with label and error messages.

  A `%Phoenix.HTML.Form{}` and field name may be passed to the input
  to build input names and error messages, or all the attributes and
  errors may be passed explicitly.

  ## Examples

      <.input field={{f, :email}} type="email" />
      <.input name="my-input" errors={["oh no!"]} />
  """
  attr :id, :any
  attr :name, :any
  attr :label, :string, default: nil

  attr :type, :string,
    default: "text",
    values: ~w(checkbox color date datetime-local email file hidden month number password
               range radio search select tel text textarea time url week)

  attr :value, :any
  attr :field, :any, doc: "a %Phoenix.HTML.Form{}/field name tuple, for example: {f, :email}"
  attr :errors, :list
  attr :checked, :boolean, doc: "the checked flag for checkbox inputs"
  attr :prompt, :string, default: nil, doc: "the prompt for select inputs"
  attr :options, :list, doc: "the options to pass to Phoenix.HTML.Form.options_for_select/2"
  attr :multiple, :boolean, default: false, doc: "the multiple flag for select inputs"
  attr :rest, :global, include: ~w(autocomplete disabled form max maxlength min minlength
                                   pattern placeholder readonly required size step)
  slot :inner_block

  def input(%{field: {f, field}} = assigns) do
    assigns
    |> assign(field: nil)
    |> assign_new(:name, fn ->
      name = Form.input_name(f, field)
      if assigns.multiple, do: name <> "[]", else: name
    end)
    |> assign_new(:id, fn -> Form.input_id(f, field) end)
    |> assign_new(:value, fn -> Form.input_value(f, field) end)
    |> assign_new(:errors, fn -> translate_errors(f.errors || [], field) end)
    |> input()
  end

  def input(%{type: "checkbox"} = assigns) do
    assigns = assign_new(assigns, :checked, fn -> input_equals?(assigns.value, "true") end)

    ~H"""
    <label phx-feedback-for={@name} class="flex items-center gap-4 text-sm leading-6 text-zinc-600">
      <input type="hidden" name={@name} value="false" />
      <input
        type="checkbox"
        id={@id || @name}
        name={@name}
        value="true"
        checked={@checked}
        class="rounded border-zinc-300 text-zinc-900 focus:ring-zinc-900"
        {@rest}
      />
      {@label}
    </label>
    """
  end

  def input(%{type: "select"} = assigns) do
    ~H"""
    <div phx-feedback-for={@name}>
      <.label for={@id}>{@label}</.label>
      <select
        id={@id}
        name={@name}
        class="mt-1 block w-full py-2 px-3 border border-gray-300 bg-white rounded-md shadow-sm focus:outline-none focus:ring-zinc-500 focus:border-zinc-500 sm:text-sm"
        multiple={@multiple}
        {@rest}
      >
        <option :if={@prompt}>{@prompt}</option>
        {Phoenix.HTML.Form.options_for_select(@options, @value)}
      </select>
      <.error :for={msg <- @errors}>{msg}</.error>
    </div>
    """
  end

  def input(%{type: "textarea"} = assigns) do
    ~H"""
    <div phx-feedback-for={@name}>
      <.label for={@id}>{@label}</.label>
      <textarea
        id={@id || @name}
        name={@name}
        class={[
          input_border(@errors),
          "mt-2 block min-h-[6rem] w-full rounded-lg border-zinc-300 py-[7px] px-[11px]",
          "text-zinc-900 focus:border-zinc-400 focus:outline-none focus:ring-4 focus:ring-zinc-800/5 sm:text-sm sm:leading-6",
          "phx-no-feedback:border-zinc-300 phx-no-feedback:focus:border-zinc-400 phx-no-feedback:focus:ring-zinc-800/5"
        ]}
        {@rest}
      >

    <%= @value %></textarea>
      <.error :for={msg <- @errors}>{msg}</.error>
    </div>
    """
  end

  def input(assigns) do
    ~H"""
    <div phx-feedback-for={@name}>
      <.label for={@id}>{@label}</.label>
      <input
        type={@type}
        name={@name}
        id={@id || @name}
        value={@value}
        class={[
          input_border(@errors),
          "mt-2 block w-full rounded-lg border-zinc-300 py-[7px] px-[11px]",
          "text-zinc-900 focus:outline-none focus:ring-4 sm:text-sm sm:leading-6",
          "phx-no-feedback:border-zinc-300 phx-no-feedback:focus:border-zinc-400 phx-no-feedback:focus:ring-zinc-800/5"
        ]}
        {@rest}
      />
      <.error :for={msg <- @errors}>{msg}</.error>
    </div>
    """
  end

  defp input_border([] = _errors), do: "border-zinc-300 focus:border-zinc-400 focus:ring-zinc-800/5"

  defp input_border([_ | _] = _errors), do: "border-rose-400 focus:border-rose-400 focus:ring-rose-400/10"

  @doc """
  Renders a label.
  """
  attr :for, :string, default: nil
  slot :inner_block, required: true

  def label(assigns) do
    ~H"""
    <label for={@for} class="block text-sm font-semibold leading-6 text-zinc-800">
      {render_slot(@inner_block)}
    </label>
    """
  end

  @doc """
  Generates a generic error message.
  """
  slot :inner_block, required: true

  def error(assigns) do
    ~H"""
    <p class="phx-no-feedback:hidden mt-3 flex gap-3 text-sm leading-6 text-rose-600">
      <.icon name="exclamation-circle" outline={true} class="mt-0.5 h-5 w-5 flex-none fill-rose-500" />
      {render_slot(@inner_block)}
    </p>
    """
  end

  @doc """
  Renders a modern site header with navigation links.
  """
  attr :class, :string, default: ""
  attr :dev_mode, :boolean, default: false
  attr :current_user, :any, default: nil

  def header(assigns) do
    ~H"""
    <header class="site-header relative bg-gray-800 dark:bg-gray-800/50 dark:after:pointer-events-none dark:after:absolute dark:after:inset-x-0 dark:after:bottom-0 dark:after:h-px dark:after:bg-white/10">
      <nav class="mx-auto flex max-w-7xl items-center justify-between px-4 py-3 sm:px-6 lg:px-8">
        <div class="flex items-center">
          <.link
            navigate="/"
            class="flex items-center gap-2 text-xl font-bold text-white hover:text-gray-200"
          >
            <svg class="h-6 w-6 text-indigo-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path
                stroke-linecap="round"
                stroke-linejoin="round"
                stroke-width="2"
                d="M9.348 14.651a3.75 3.75 0 010-5.303m5.304 0a3.75 3.75 0 010 5.303m-7.425 2.122a6.75 6.75 0 010-9.546m9.546 0a6.75 6.75 0 010 9.546M5.106 18.894c-3.808-3.808-3.808-9.98 0-13.789m13.788 0c3.808 3.808 3.808 9.981 0 13.79M12 12h.008v.007H12V12zm.375 0a.375.375 0 11-.75 0 .375.375 0 01.75 0z"
              />
            </svg>
            aprs.me
            <%= if @dev_mode do %>
              <span class="ml-1 inline-flex items-center rounded-md bg-yellow-400/10 px-2 py-0.5 text-xs font-medium text-yellow-500 ring-1 ring-inset ring-yellow-400/20">
                DEV
              </span>
            <% end %>
          </.link>
        </div>
        <div class="hidden lg:flex lg:items-center lg:gap-x-1">
          <.navigation variant={:horizontal} current_user={@current_user} />
        </div>
        <div class="flex items-center gap-2">
          <.theme_selector />
          <div class="relative lg:hidden">
            <button
              phx-click={
                JS.toggle(to: "#mobile-menu", in: "transition ease-out duration-100", out: "transition ease-in duration-75")
              }
              class="relative inline-flex items-center justify-center rounded-md p-2 text-gray-400 hover:bg-white/5 hover:text-white focus:outline-2 focus:-outline-offset-1 focus:outline-indigo-500"
            >
              <svg class="h-6 w-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path
                  stroke-linecap="round"
                  stroke-linejoin="round"
                  stroke-width="1.5"
                  d="M3.75 6.75h16.5M3.75 12h16.5m-16.5 5.25h16.5"
                />
              </svg>
            </button>
            <div
              id="mobile-menu"
              class="hidden absolute right-0 z-10 mt-2 w-56 origin-top-right rounded-md bg-gray-800 py-2 shadow-lg ring-1 ring-white/10"
            >
              <.navigation variant={:vertical} current_user={@current_user} />
            </div>
          </div>
        </div>
      </nav>
    </header>
    """
  end

  @doc """
  Renders a theme selector dropdown.
  """
  def theme_selector(assigns) do
    ~H"""
    <div class="relative">
      <button
        phx-click={
          JS.toggle(to: "#theme-menu", in: "transition ease-out duration-100", out: "transition ease-in duration-75")
        }
        class="relative rounded-full p-1.5 text-gray-400 hover:text-white focus:outline-2 focus:outline-offset-2 focus:outline-indigo-500"
      >
        <svg class="h-5 w-5 fill-current" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
          <path d="M12 2.25a.75.75 0 01.75.75v2.25a.75.75 0 01-1.5 0V3a.75.75 0 01.75-.75zM7.5 12a4.5 4.5 0 119 0 4.5 4.5 0 01-9 0zM18.894 6.166a.75.75 0 00-1.06-1.06l-1.591 1.59a.75.75 0 101.06 1.061l1.591-1.59zM21.75 12a.75.75 0 01-.75.75h-2.25a.75.75 0 010-1.5H21a.75.75 0 01.75.75zM17.834 18.894a.75.75 0 001.06-1.06l-1.59-1.591a.75.75 0 10-1.061 1.06l1.59 1.591zM12 18a.75.75 0 01.75.75V21a.75.75 0 01-1.5 0v-2.25A.75.75 0 0112 18zM7.758 17.303a.75.75 0 00-1.061-1.06l-1.591 1.59a.75.75 0 001.06 1.061l1.591-1.59zM6 12a.75.75 0 01-.75.75H3a.75.75 0 010-1.5h2.25A.75.75 0 016 12zM6.697 7.757a.75.75 0 001.06-1.06l-1.59-1.591a.75.75 0 00-1.061 1.06l1.59 1.591z" />
        </svg>
      </button>
      <div
        id="theme-menu"
        phx-click-away={JS.hide(to: "#theme-menu")}
        class="hidden absolute right-0 z-10 mt-2 w-48 origin-top-right rounded-md bg-gray-800 py-1 shadow-lg ring-1 ring-white/10"
      >
        <button
          phx-click={JS.dispatch("phx:set-theme", detail: %{theme: "light"}) |> JS.hide(to: "#theme-menu")}
          class="flex w-full items-center gap-3 px-4 py-2 text-sm text-gray-200 hover:bg-white/5"
        >
          <svg class="h-4 w-4" fill="currentColor" viewBox="0 0 20 20">
            <path
              fill-rule="evenodd"
              d="M10 2a1 1 0 011 1v1a1 1 0 11-2 0V3a1 1 0 011-1zm4 8a4 4 0 11-8 0 4 4 0 018 0zm-.464 4.95l.707.707a1 1 0 001.414-1.414l-.707-.707a1 1 0 00-1.414 1.414zm2.12-10.607a1 1 0 010 1.414l-.706.707a1 1 0 11-1.414-1.414l.707-.707a1 1 0 011.414 0zM17 11a1 1 0 100-2h-1a1 1 0 100 2h1zm-7 4a1 1 0 011 1v1a1 1 0 11-2 0v-1a1 1 0 011-1zM5.05 6.464A1 1 0 106.465 5.05l-.708-.707a1 1 0 00-1.414 1.414l.707.707zm1.414 8.486l-.707.707a1 1 0 01-1.414-1.414l.707-.707a1 1 0 011.414 1.414zM4 11a1 1 0 100-2H3a1 1 0 000 2h1z"
              clip-rule="evenodd"
            />
          </svg>
          {gettext("Light")}
        </button>
        <button
          phx-click={JS.dispatch("phx:set-theme", detail: %{theme: "dark"}) |> JS.hide(to: "#theme-menu")}
          class="flex w-full items-center gap-3 px-4 py-2 text-sm text-gray-200 hover:bg-white/5"
        >
          <svg class="h-4 w-4" fill="currentColor" viewBox="0 0 20 20">
            <path d="M17.293 13.293A8 8 0 016.707 2.707a8.001 8.001 0 1010.586 10.586z" />
          </svg>
          {gettext("Dark")}
        </button>
        <button
          phx-click={JS.dispatch("phx:set-theme", detail: %{theme: "auto"}) |> JS.hide(to: "#theme-menu")}
          class="flex w-full items-center gap-3 px-4 py-2 text-sm text-gray-200 hover:bg-white/5"
        >
          <svg class="h-4 w-4" fill="currentColor" viewBox="0 0 20 20">
            <path
              fill-rule="evenodd"
              d="M3 4a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zm0 4a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zm0 4a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1z"
              clip-rule="evenodd"
            />
          </svg>
          {gettext("Auto")}
        </button>
      </div>
    </div>
    """
  end

  # Helper function to safely generate row IDs.
  # Prefer the :id / "id" field on maps; hash the inspected row as a
  # last-resort fallback. Non-map rows go through Phoenix.Param.
  defp safe_row_id(%{id: id}), do: id
  defp safe_row_id(%{"id" => id}), do: id

  defp safe_row_id(row) when is_map(row) do
    :md5 |> :crypto.hash(inspect(row)) |> Base.encode16() |> String.slice(0, 8)
  end

  defp safe_row_id(row), do: Phoenix.Param.to_param(row)

  @doc ~S"""
  Renders a table with generic styling.

  ## Examples

      <.table id="users" rows={@users}>
        <:col :let={user} label="id"><%= user.id %></:col>
        <:col :let={user} label="username"><%= user.username %></:col>
      </.table>
  """
  attr :id, :string, required: true
  attr :row_click, :any, default: nil
  attr :rows, :list, required: true

  slot :col, required: true do
    attr :label, :string
  end

  slot :action, doc: "the slot for showing user actions in the last table column"

  def table(assigns) do
    ~H"""
    <div id={@id} class="overflow-y-auto px-0 sm:overflow-visible sm:px-0">
      <table class="w-[40rem] sm:w-full">
        <thead class="text-left text-[0.8125rem] leading-6 text-zinc-500">
          <tr>
            <th :for={col <- @col} class="p-0 pb-4 pr-6 font-normal">{col[:label]}</th>
            <th class="relative p-0 pb-4"><span class="sr-only">{gettext("Actions")}</span></th>
          </tr>
        </thead>
        <tbody class="relative divide-y divide-zinc-100 border-t border-zinc-200 text-sm leading-6 text-zinc-700">
          <tr :for={row <- @rows} id={"#{@id}-#{safe_row_id(row)}"} class="relative group hover:bg-zinc-50">
            <td
              :for={{col, i} <- Enum.with_index(@col)}
              phx-click={@row_click && @row_click.(row)}
              class={["p-0", @row_click && "hover:cursor-pointer"]}
            >
              <div :if={i == 0}>
                <span class="absolute h-full w-4 top-0 left-0 group-hover:bg-zinc-50 sm:rounded-l-xl" />
                <span class="absolute h-full w-4 top-0 -right-4 group-hover:bg-zinc-50 sm:rounded-r-xl" />
              </div>
              <div class="block py-4 pr-6">
                <span class={["relative", i == 0 && "font-semibold text-zinc-900"]}>
                  {render_slot(col, row)}
                </span>
              </div>
            </td>
            <td :if={@action != []} class="p-0 w-14">
              <div class="relative whitespace-nowrap py-4 text-right text-sm font-medium">
                <span
                  :for={action <- @action}
                  class="relative ml-4 font-semibold leading-6 text-zinc-900 hover:text-zinc-700"
                >
                  {render_slot(action, row)}
                </span>
              </div>
            </td>
          </tr>
        </tbody>
      </table>
    </div>
    """
  end

  @doc """
  Renders a data list.

  ## Examples

      <.list>
        <:item title="Title"><%= @post.title %></:item>
        <:item title="Views"><%= @post.views %></:item>
      </.list>
  """
  slot :item, required: true do
    attr :title, :string, required: true
  end

  def list(assigns) do
    ~H"""
    <div class="mt-14">
      <dl class="-my-4 divide-y divide-zinc-100">
        <div :for={item <- @item} class="flex gap-4 py-4 sm:gap-8">
          <dt class="w-1/4 flex-none text-[0.8125rem] leading-6 text-zinc-500">{item.title}</dt>
          <dd class="text-sm leading-6 text-zinc-700">{render_slot(item)}</dd>
        </div>
      </dl>
    </div>
    """
  end

  @doc """
  Renders a back navigation link.

  ## Examples

      <.back navigate={~p"/posts"}>Back to posts</.back>
  """
  attr :navigate, :any, required: true
  slot :inner_block, required: true

  def back(assigns) do
    ~H"""
    <div class="mt-16">
      <.link navigate={@navigate} class="text-sm font-semibold leading-6 text-zinc-900 hover:text-zinc-700">
        <.icon name="arrow-left" outline={false} class="w-3 h-3 stroke-current inline" />
        {render_slot(@inner_block)}
      </.link>
    </div>
    """
  end

  ## JS Commands

  def show(js \\ %JS{}, selector) do
    JS.show(js,
      to: selector,
      transition:
        {"transition-all transform ease-out duration-300", "opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95",
         "opacity-100 translate-y-0 sm:scale-100"}
    )
  end

  def hide(js \\ %JS{}, selector) do
    JS.hide(js,
      to: selector,
      time: 200,
      transition:
        {"transition-all transform ease-in duration-200", "opacity-100 translate-y-0 sm:scale-100",
         "opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"}
    )
  end

  def show_modal(js \\ %JS{}, id) when is_binary(id) do
    js
    |> JS.show(to: "##{id}")
    |> JS.show(
      to: "##{id}-bg",
      transition: {"transition-all transform ease-out duration-300", "opacity-0", "opacity-100"}
    )
    |> show("##{id}-container")
    |> JS.focus_first(to: "##{id}-content")
  end

  def hide_modal(js \\ %JS{}, id) do
    js
    |> JS.hide(
      to: "##{id}-bg",
      transition: {"transition-all transform ease-in duration-200", "opacity-100", "opacity-0"}
    )
    |> hide("##{id}-container")
    |> JS.hide(to: "##{id}", transition: {"block", "block", "hidden"})
    |> JS.pop_focus()
  end

  @doc """
  Translates an error message using gettext.
  """
  def translate_error({msg, opts}) do
    # When using gettext, we typically pass the strings we want
    # to translate as a static argument:
    #
    #     # Translate "is invalid" in the "errors" domain
    #     dgettext("errors", "is invalid")
    #
    #     # Translate the number of files with plural rules
    #     dngettext("errors", "1 file", "%{count} files", count)
    #
    # Because the error messages we show in our forms and APIs
    # are defined inside Ecto, we need to translate them dynamically.
    # This requires us to call the Gettext module passing our gettext
    # backend as first argument.
    #
    # Note we use the "errors" domain, which means translations
    # should be written to the errors.po file. The :count option is
    # set by Ecto and indicates we should also apply plural rules.
    if count = opts[:count] do
      Gettext.dngettext(AprsmeWeb.Gettext, "errors", msg, msg, count, opts)
    else
      Gettext.dgettext(AprsmeWeb.Gettext, "errors", msg, opts)
    end
  end

  @doc """
  Translates the errors for a field from a keyword list of errors.
  """
  def translate_errors(errors, field) when is_list(errors) do
    for {^field, {msg, opts}} <- errors, do: translate_error({msg, opts})
  end

  defp input_equals?(val1, val2) do
    Phoenix.HTML.html_escape(val1) == Phoenix.HTML.html_escape(val2)
  end

  @doc """
  Renders a navigation menu component that can be used in both regular pages and map sidebars.
  """
  attr :class, :string, default: ""
  attr :variant, :atom, values: [:horizontal, :vertical, :sidebar], default: :horizontal
  attr :current_user, :any, default: nil
  attr :map_state, :map, default: nil
  attr :tracked_callsign, :string, default: ""

  def navigation(assigns) do
    # Build home URL with map state if available
    home_url =
      if assigns[:map_state] do
        base_url = "/?lat=#{assigns.map_state.lat}&lng=#{assigns.map_state.lng}&z=#{assigns.map_state.zoom}"

        if assigns[:tracked_callsign] && assigns.tracked_callsign != "" do
          base_url <> "&call=#{assigns.tracked_callsign}"
        else
          base_url
        end
      else
        "/"
      end

    assigns = assign(assigns, :home_url, home_url)

    ~H"""
    <%= if @variant == :horizontal do %>
      <.link
        navigate={@home_url}
        class="rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
      >
        {gettext("Home")}
      </.link>
      <.link
        navigate="/api"
        class="rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
      >
        API
      </.link>
      <.link
        navigate="/about"
        class="rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
      >
        {gettext("About")}
      </.link>
      <%= if @current_user do %>
        <.link
          navigate="/users/settings"
          class="rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
        >
          {gettext("Settings")}
        </.link>
        <.link
          href="/users/log_out"
          method="delete"
          class="rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
        >
          {gettext("Log out")}
        </.link>
      <% else %>
        <.link
          navigate="/users/register"
          class="rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
        >
          {gettext("Register")}
        </.link>
        <.link
          navigate="/users/log_in"
          class="rounded-md bg-indigo-500 px-3 py-2 text-sm font-semibold text-white shadow-xs hover:bg-indigo-400"
        >
          {gettext("Log in")}
        </.link>
      <% end %>
    <% end %>
    <%= if @variant == :vertical do %>
      <.link
        navigate={@home_url}
        class="block rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
      >
        {gettext("Home")}
      </.link>
      <.link
        navigate="/api"
        class="block rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
      >
        API
      </.link>
      <.link
        navigate="/about"
        class="block rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
      >
        {gettext("About")}
      </.link>
      <%= if @current_user do %>
        <.link
          navigate="/users/settings"
          class="block rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
        >
          {gettext("Settings")}
        </.link>
        <.link
          href="/users/log_out"
          method="delete"
          class="block rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
        >
          {gettext("Log out")}
        </.link>
      <% else %>
        <.link
          navigate="/users/register"
          class="block rounded-md px-3 py-2 text-sm font-medium text-gray-300 hover:bg-white/5 hover:text-white"
        >
          {gettext("Register")}
        </.link>
        <.link
          navigate="/users/log_in"
          class="block rounded-md bg-indigo-500 px-3 py-2 text-sm font-semibold text-white shadow-xs hover:bg-indigo-400"
        >
          {gettext("Log in")}
        </.link>
      <% end %>
    <% end %>
    <%= if @variant == :sidebar do %>
      <.link
        navigate={@home_url}
        class="block rounded-md px-3 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
      >
        {gettext("Home")}
      </.link>
      <.link
        navigate="/api"
        class="block rounded-md px-3 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
      >
        API
      </.link>
      <.link
        navigate="/about"
        class="block rounded-md px-3 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
      >
        {gettext("About")}
      </.link>
      <%= if @current_user do %>
        <.link
          navigate="/users/settings"
          class="block rounded-md px-3 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
        >
          {gettext("Settings")}
        </.link>
        <.link
          href="/users/log_out"
          method="delete"
          class="block rounded-md px-3 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
        >
          {gettext("Log out")}
        </.link>
      <% else %>
        <.link
          navigate="/users/register"
          class="block rounded-md px-3 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
        >
          {gettext("Register")}
        </.link>
        <.link
          navigate="/users/log_in"
          class="block rounded-md bg-indigo-600 px-3 py-2 text-sm font-semibold text-white shadow-xs hover:bg-indigo-500"
        >
          {gettext("Log in")}
        </.link>
      <% end %>
    <% end %>
    """
  end

  defp add_class_to_svg_tag(attrs, class) do
    if String.contains?(attrs, "class=") do
      "<svg#{attrs}>"
    else
      "<svg class=\"#{class}\"#{attrs}>"
    end
  end
end