defmodule FirehoseWeb.Layouts do
  @moduledoc """
  This module holds layouts and related functionality
  used by your application.
  """
  use FirehoseWeb, :html

  # Embed all files in layouts/* within this module.
  # The default root.html.heex file contains the HTML
  # skeleton of your application, namely HTML headers
  # and other static content.

  embed_templates "layouts/*"

  @doc """
  Stores content in the connection for later rendering in layouts.

  Used to inject dynamic meta tags into the `<head>` section.
  """
  def put_content_for(conn, key, content) do
    content_for = Map.get(conn.assigns, :content_for, %{})
    new_content_for = Map.update(content_for, key, [content], &(&1 ++ [content]))
    Plug.Conn.assign(conn, :content_for, new_content_for)
  end

  @doc """
  Retrieves content stored via `put_content_for/3`.

  Can be called from HEEx templates with `get_content_for(assigns, :meta_tags)`.
  """
  def get_content_for(assigns, key) do
    content_for = assigns[:content_for]
    if is_map(content_for), do: Map.get(content_for, key, []), else: []
  end

  @doc """
  Shows the flash group with standard titles and content.

  ## Examples

      <.flash_group flash={@flash} />
  """
  attr :flash, :map, required: true, doc: "the map of flash messages"
  attr :id, :string, default: "flash-group", doc: "the optional id of flash container"

  def flash_group(assigns) do
    ~H"""
    <div id={@id} aria-live="polite">
      <.flash kind={:info} flash={@flash} />
      <.flash kind={:error} flash={@flash} />

      <.flash
        id="client-error"
        kind={:error}
        title={gettext("We can't find the internet")}
        phx-disconnected={show(".phx-client-error #client-error") |> JS.remove_attribute("hidden")}
        phx-connected={hide("#client-error") |> JS.set_attribute({"hidden", ""})}
        hidden
      >
        {gettext("Attempting to reconnect")}
        <.icon name="hero-arrow-path" class="ml-1 size-3 motion-safe:animate-spin" />
      </.flash>

      <.flash
        id="server-error"
        kind={:error}
        title={gettext("Something went wrong!")}
        phx-disconnected={show(".phx-server-error #server-error") |> JS.remove_attribute("hidden")}
        phx-connected={hide("#server-error") |> JS.set_attribute({"hidden", ""})}
        hidden
      >
        {gettext("Attempting to reconnect")}
        <.icon name="hero-arrow-path" class="ml-1 size-3 motion-safe:animate-spin" />
      </.flash>
    </div>
    """
  end

  @doc """
  Provides dark vs light theme toggle based on themes defined in app.css.

  See <head> in root.html.heex which applies the theme before page load.
  """
  def theme_toggle(assigns) do
    ~H"""
    <div class="card relative flex flex-row items-center border-2 border-base-300 bg-base-300 rounded-full">
      <%!-- The knob follows the visitor's choice, not the resolved palette: in
      system mode data-theme may be light or dark, but the system icon stays
      selected. --%>
      <div class="absolute w-1/3 h-full rounded-full border-1 border-base-200 bg-base-100 brightness-200 left-0 [[data-theme-choice=light]_&]:left-1/3 [[data-theme-choice=dark]_&]:left-2/3 transition-[left]" />

      <button
        class="flex p-2 cursor-pointer w-1/3"
        phx-click={JS.dispatch("phx:set-theme")}
        data-phx-theme="system"
      >
        <.icon name="hero-computer-desktop-micro" class="size-4 opacity-75 hover:opacity-100" />
      </button>

      <button
        class="flex p-2 cursor-pointer w-1/3"
        phx-click={JS.dispatch("phx:set-theme")}
        data-phx-theme="light"
      >
        <.icon name="hero-sun-micro" class="size-4 opacity-75 hover:opacity-100" />
      </button>

      <button
        class="flex p-2 cursor-pointer w-1/3"
        phx-click={JS.dispatch("phx:set-theme")}
        data-phx-theme="dark"
      >
        <.icon name="hero-moon-micro" class="size-4 opacity-75 hover:opacity-100" />
      </button>
    </div>
    """
  end
end