live_beats/lib/live_beats_web/live/live_helpers.ex

defmodule LiveBeatsWeb.LiveHelpers do
  import Phoenix.LiveView
  import Phoenix.LiveView.Helpers

  alias LiveBeatsWeb.Router.Helpers, as: Routes
  alias Phoenix.LiveView.JS

  alias LiveBeats.Accounts
  alias LiveBeats.MediaLibrary

  def home_path(nil = _current_user), do: "/"
  def home_path(%Accounts.User{} = current_user), do: profile_path(current_user)

  def profile_path(current_user_or_profile, action \\ :show)

  def profile_path(username, action) when is_binary(username) do
    Routes.profile_path(LiveBeatsWeb.Endpoint, action, username)
  end

  def profile_path(%Accounts.User{} = current_user, action) do
    profile_path(current_user.username, action)
  end

  def profile_path(%MediaLibrary.Profile{} = profile, action) do
    profile_path(profile.username, action)
  end

  def connection_status(assigns) do
    ~H"""
    <div
      id="connection-status"
      class="hidden rounded-md bg-red-50 p-4 fixed top-1 right-1 w-96 fade-in-scale"
      js-show={show("#connection-status")}
      js-hide={hide("#connection-status")}
    >
      <div class="flex">
        <div class="flex-shrink-0">
          <svg class="animate-spin -ml-1 mr-3 h-5 w-5 text-red-800" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" aria-hidden="true">
            <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
            <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
          </svg>
        </div>
        <div class="ml-3">
          <p class="text-sm font-medium text-red-800" role="alert">
            <%= render_slot(@inner_block) %>
          </p>
        </div>
      </div>
    </div>
    """
  end

  def flash(%{kind: :error} = assigns) do
    ~H"""
    <%= if live_flash(@flash, @kind) do %>
      <div
        id="flash"
        class="rounded-md bg-red-50 p-4 fixed top-1 right-1 w-96 fade-in-scale"
        phx-click={JS.push("lv:clear-flash") |> JS.remove_class("fade-in-scale", to: "#flash") |> hide("#flash")}
        phx-hook="Flash"
      >
        <div class="flex justify-between items-center space-x-3 text-red-700">
          <.icon name={:exclamation_circle} class="w-5 w-5"/>
          <p class="flex-1 text-sm font-medium">
            <%= live_flash(@flash, @kind) %>
          </p>
          <button type="button" class="inline-flex bg-red-50 rounded-md p-1.5 text-red-500 hover:bg-red-100 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-red-50 focus:ring-red-600">
            <.icon name={:x} class="w-4 h-4" />
          </button>
        </div>
      </div>
    <% end %>
    """
  end

  def flash(%{kind: :info} = assigns) do
    ~H"""
    <%= if live_flash(@flash, @kind) do %>
      <div
        id="flash"
        class="rounded-md bg-green-50 p-4 fixed top-1 right-1 w-96 fade-in-scale"
        phx-click={JS.push("lv:clear-flash") |> JS.remove_class("fade-in-scale") |> hide("#flash")}
        phx-value-key="info"
        phx-hook="Flash"
      >
        <div class="flex justify-between items-center space-x-3 text-green-700">
          <.icon name={:check_circle} class="w-5 h-5"/>
          <p class="flex-1 text-sm font-medium">
            <%= live_flash(@flash, @kind) %>
          </p>
          <button type="button" class="inline-flex bg-green-50 rounded-md p-1.5 text-green-500 hover:bg-green-100 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-green-50 focus:ring-green-600">
            <.icon name={:x} class="w-4 h-4" />
          </button>
        </div>
      </div>
    <% end %>
    """
  end

  def spinner(assigns) do
    ~H"""
    <svg class="inline-block animate-spin h-2.5 w-2.5 text-gray-400" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" aria-hidden="true">
      <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
      <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
    </svg>
    """
  end

  def icon(assigns) do
    assigns =
      assigns
      |> assign_new(:outlined, fn -> false end)
      |> assign_new(:class, fn -> "w-4 h-4 inline-block" end)
      |> assign_new(:"aria-hidden", fn -> !Map.has_key?(assigns, :"aria-label") end)

    ~H"""
    <%= if @outlined do %>
      <%= apply(Heroicons.Outline, @name, [assigns_to_attributes(assigns, [:outlined, :name])]) %>
    <% else %>
      <%= apply(Heroicons.Solid, @name, [assigns_to_attributes(assigns, [:outlined, :name])]) %>
    <% end %>
    """
  end

  def link(%{navigate: _to} = assigns) do
    assigns = assign_new(assigns, :class, fn -> nil end)

    ~H"""
    <a href={@navigate} data-phx-link="redirect" data-phx-link-state="push" class={@class}>
      <%= render_slot(@inner_block) %>
    </a>
    """
  end

  def link(%{patch: to} = assigns) do
    opts = assigns |> assigns_to_attributes() |> Keyword.put(:to, to)
    assigns = assign(assigns, :opts, opts)

    ~H"""
    <%= live_patch @opts do %><%= render_slot(@inner_block) %><% end %>
    """
  end

  def link(%{} = assigns) do
    opts = assigns |> assigns_to_attributes() |> Keyword.put(:to, assigns[:href] || "#")
    assigns = assign(assigns, :opts, opts)

    ~H"""
    <%= Phoenix.HTML.Link.link @opts do %><%= render_slot(@inner_block) %><% end %>
    """
  end

  @doc """
  Returns a button triggered dropdown with aria keyboard and focus supporrt.

  Accepts the follow slots:

    * `:id` - The id to uniquely identify this dropdown
    * `:img` - The optional img to show beside the button title
    * `:title` - The button title
    * `:subtitle` - The button subtitle

  ## Examples

      <.dropdown id={@id}>
        <:img src={@current_user.avatar_url}/>
        <:title><%= @current_user.name %></:title>
        <:subtitle>@<%= @current_user.username %></:subtitle>

        <:link navigate={profile_path(@current_user)}>View Profile</:link>
        <:link navigate={Routes.settings_path(LiveBeatsWeb.Endpoint, :edit)}Settings</:link>
      </.dropdown>
  """
  def dropdown(assigns) do
    assigns =
      assigns
      |> assign_new(:img, fn -> nil end)
      |> assign_new(:title, fn -> nil end)
      |> assign_new(:subtitle, fn -> nil end)

    ~H"""
    <!-- User account dropdown -->
    <div class="px-3 mt-6 relative inline-block text-left">
      <div>
        <button
          id={@id}
          type="button"
          class="group w-full bg-gray-100 rounded-md px-3.5 py-2 text-sm text-left font-medium text-gray-700 hover:bg-gray-200 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-100 focus:ring-purple-500"
          phx-click={show_dropdown("##{@id}-dropdown")}
          phx-hook="Menu"
          data-active-class="bg-gray-100"
          aria-haspopup="true"
        >
          <span class="flex w-full justify-between items-center">
            <span class="flex min-w-0 items-center justify-between space-x-3">
              <%= for img <- @img do %>
                <img class="w-10 h-10 bg-gray-300 rounded-full flex-shrink-0" alt="" {assigns_to_attributes(img)}/>
              <% end %>
              <span class="flex-1 flex flex-col min-w-0">
                <span class="text-gray-900 text-sm font-medium truncate"><%= render_slot(@title) %></span>
                <span class="text-gray-500 text-sm truncate"><%= render_slot(@subtitle) %></span>
              </span>
            </span>
            <svg class="flex-shrink-0 h-5 w-5 text-gray-400 group-hover:text-gray-500"
              xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20"
              fill="currentColor" aria-hidden="true">
              <path fill-rule="evenodd"
                d="M10 3a1 1 0 01.707.293l3 3a1 1 0 01-1.414 1.414L10 5.414 7.707 7.707a1 1 0 01-1.414-1.414l3-3A1 1 0 0110 3zm-3.707 9.293a1 1 0 011.414 0L10 14.586l2.293-2.293a1 1 0 011.414 1.414l-3 3a1 1 0 01-1.414 0l-3-3a1 1 0 010-1.414z"
                clip-rule="evenodd"></path>
            </svg>
          </span>
        </button>
      </div>
      <div
        id={"#{@id}-dropdown"}
        phx-click-away={hide_dropdown("##{@id}-dropdown")}
        class="hidden z-10 mx-3 origin-top absolute right-0 left-0 mt-1 rounded-md shadow-lg bg-white ring-1 ring-black ring-opacity-5 divide-y divide-gray-200"
        role="menu"
        aria-labelledby={@id}
      >
        <div class="py-1" role="none">
          <%= for link <- @link do %>
            <.link
              tabindex="-1"
              role="menuitem"
              class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-100 focus:ring-purple-500" {link}
            ><%= render_slot(link) %></.link>
          <% end %>
        </div>
      </div>
    </div>
    """
  end

  def show_mobile_sidebar(js \\ %JS{}) do
    js
    |> JS.show(to: "#mobile-sidebar-container", transition: "fade-in")
    |> JS.show(
      to: "#mobile-sidebar",
      display: "flex",
      time: 300,
      transition:
        {"transition ease-in-out duration-300 transform", "-translate-x-full", "translate-x-0"}
    )
    |> JS.hide(to: "#show-mobile-sidebar", transition: "fade-out")
    |> JS.dispatch("js:exec", to: "#hide-mobile-sidebar", detail: %{call: "focus", args: []})
  end

  def hide_mobile_sidebar(js \\ %JS{}) do
    js
    |> JS.hide(to: "#mobile-sidebar-container", transition: "fade-out")
    |> JS.hide(
      to: "#mobile-sidebar",
      time: 300,
      transition:
        {"transition ease-in-out duration-300 transform", "translate-x-0", "-translate-x-full"}
    )
    |> JS.show(to: "#show-mobile-sidebar", transition: "fade-in")
    |> JS.dispatch("js:exec", to: "#show-mobile-sidebar", detail: %{call: "focus", args: []})
  end

  def show(js \\ %JS{}, selector) do
    JS.show(js,
      to: selector,
      time: 300,
      display: "inline-block",
      transition:
        {"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: 300,
      transition:
        {"transition ease-in duration-300", "transform opacity-100 scale-100",
         "transform opacity-0 scale-95"}
    )
  end

  def show_dropdown(to) do
    JS.show(
      to: to,
      transition:
        {"transition ease-out duration-120", "transform opacity-0 scale-95",
         "transform opacity-100 scale-100"}
    )
    |> JS.set_attribute({"aria-expanded", "true"}, to: to)
  end

  def hide_dropdown(to) do
    JS.hide(
      to: to,
      transition:
        {"transition ease-in duration-120", "transform opacity-100 scale-100",
         "transform opacity-0 scale-95"}
    )
    |> JS.remove_attribute("aria-expanded", to: to)
  end

  def show_modal(js \\ %JS{}, id) when is_binary(id) do
    js
    |> JS.show(
      to: "##{id}",
      display: "inline-block",
      transition: {"ease-out duration-300", "opacity-0", "opacity-100"}
    )
    |> JS.show(
      to: "##{id}-container",
      display: "inline-block",
      transition:
        {"ease-out duration-300", "opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95",
         "opacity-100 translate-y-0 sm:scale-100"}
    )
    |> js_exec("##{id}-confirm", "focus", [])
  end

  def hide_modal(js \\ %JS{}, id) do
    js
    |> JS.remove_class("fade-in", to: "##{id}")
    |> JS.hide(
      to: "##{id}",
      transition: {"ease-in duration-200", "opacity-100", "opacity-0"}
    )
    |> JS.hide(
      to: "##{id}-container",
      transition:
        {"ease-in duration-200", "opacity-100 translate-y-0 sm:scale-100",
         "opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"}
    )
    |> JS.dispatch("click", to: "##{id} [data-modal-return]")
  end

  def modal(assigns) do
    assigns =
      assigns
      |> assign_new(:show, fn -> false end)
      |> assign_new(:patch, fn -> nil end)
      |> assign_new(:navigate, fn -> nil end)
      |> assign_new(:on_cancel, fn -> %JS{} end)
      |> assign_new(:on_confirm, fn -> %JS{} end)
      # slots
      |> assign_new(:title, fn -> [] end)
      |> assign_new(:confirm, fn -> [] end)
      |> assign_new(:cancel, fn -> [] end)
      |> assign_rest(~w(id show patch navigate on_cancel on_confirm title confirm cancel)a)

    ~H"""
    <div id={@id} class={"fixed z-10 inset-0 overflow-y-auto #{if @show, do: "fade-in", else: "hidden"}"} aria-labelledby="modal-title" role="dialog" aria-modal="true" {@rest}>
      <div class="flex items-end justify-center min-h-screen pt-4 px-4 pb-20 text-center sm:block sm:p-0">
        <div class="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" aria-hidden="true"></div>
        <span class="hidden sm:inline-block sm:align-middle sm:h-screen" aria-hidden="true">&#8203;</span>
        <div
          id={"#{@id}-container"}
          class={"#{if @show, do: "fade-in-scale", else: "hidden"} sticky inline-block align-bottom bg-white rounded-lg px-4 pt-5 pb-4 text-left overflow-hidden shadow-xl transform sm:my-8 sm:align-middle sm:max-w-xl sm:w-full sm:p-6"}
          phx-window-keydown={hide_modal(@on_cancel, @id)} phx-key="escape"
          phx-click-away={hide_modal(@on_cancel, @id)}
        >
          <%= if @patch do %>
            <.link patch={@patch} data-modal-return class="hidden"></.link>
          <% end %>
          <%= if @navigate do %>
            <.link navigate={@navigate} data-modal-return class="hidden"></.link>
          <% end %>
          <div class="sm:flex sm:items-start">
            <div class={"mx-auto flex-shrink-0 flex items-center justify-center h-8 w-8 rounded-full bg-purple-100 sm:mx-0"}>
              <!-- Heroicon name: outline/plus -->
              <.icon name={:information_circle} outlined class="h-6 w-6 text-purple-600"/>
            </div>
            <div class="mt-3 text-center sm:mt-0 sm:ml-4 sm:text-left w-full mr-12">
              <h3 class="text-lg leading-6 font-medium text-gray-900" id={"#{@id}-title"}>
                <%= render_slot(@title) %>
              </h3>
              <div class="mt-2">
                <p id={"#{@id}-content"} class={"text-sm text-gray-500"}>
                  <%= render_slot(@inner_block) %>
                </p>
              </div>
            </div>
          </div>
          <div class="mt-5 sm:mt-4 sm:flex sm:flex-row-reverse">
            <%= for confirm <- @confirm do %>
              <button
                id={"#{@id}-confirm"}
                class="w-full inline-flex justify-center rounded-md border border-transparent shadow-sm px-4 py-2 bg-red-600 text-base font-medium text-white hover:bg-red-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500 sm:ml-3 sm:w-auto sm:text-sm"
                phx-click={@on_confirm}
                phx-disable-with
                tabindex="1"
                {assigns_to_attributes(confirm)}
              >
                <%= render_slot(confirm) %>
              </button>
            <% end %>
            <%= for cancel <- @cancel do %>
              <button
                class="mt-3 w-full inline-flex justify-center rounded-md border border-gray-300 shadow-sm px-4 py-2 bg-white text-base font-medium text-gray-700 hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 sm:mt-0 sm:w-auto sm:text-sm"
                phx-click={hide_modal(@on_cancel, @id)}
                tabindex="2"
                {assigns_to_attributes(cancel)}
              >
                <%= render_slot(cancel) %>
              </button>
            <% end %>
          </div>
        </div>
      </div>
    </div>
    """
  end

  def progress_bar(assigns) do
    assigns =
      assigns
      |> assign_new(:min, fn -> 0 end)
      |> assign_new(:max, fn -> 100 end)
      |> assign_new(:value, fn -> assigns[:min] || 0 end)

    ~H"""
    <div id={"#{@id}-container"} class="bg-gray-200 flex-auto dark:bg-black rounded-full overflow-hidden" phx-update="ignore">
      <div
        id={@id}
        class="bg-lime-500 dark:bg-lime-400 h-1.5 w-0"
        data-min={@min}
        data-max={@max}
        data-val={@value}>
      </div>
    </div>
    """
  end

  def title_bar(assigns) do
    assigns = assign_new(assigns, :actions, fn -> [] end)

    ~H"""
    <!-- Page title & actions -->
    <div class="border-b border-gray-200 px-4 py-4 sm:flex sm:items-center sm:justify-between sm:px-6 lg:px-8 sm:h-16">
      <div class="flex-1 min-w-0">
        <h1 class="text-lg font-medium leading-6 text-gray-900 sm:truncate focus:outline-none">
          <%= render_slot(@inner_block) %>
        </h1>
      </div>
      <%= if Enum.count(@actions) > 0 do %>
        <div class="mt-4 flex sm:mt-0 sm:ml-4 space-x-4">
          <%= render_slot(@actions) %>
        </div>
      <% end %>
    </div>
    """
  end

  def button(%{patch: _} = assigns) do
    assigns = assign_new(assigns, :primary, fn -> false end)

    ~H"""
    <%= if @primary do %>
      <%= live_patch [to: @patch, class: "order-0 inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-purple-600 hover:bg-purple-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-500 sm:order-1 sm:ml-3"] ++
        assigns_to_attributes(assigns, [:primary, :patch]) do %>
        <%= render_slot(@inner_block) %>
      <% end %>
    <% else %>
      <%= live_patch [to: @patch, class: "order-1 inline-flex items-center px-4 py-2 border border-gray-300 shadow-sm text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-500 sm:order-0 sm:ml-0 lg:ml-3"] ++
        assigns_to_attributes(assigns, [:primary, :patch]) do %>
        <%= render_slot(@inner_block) %>
      <% end %>
    <% end %>
    """
  end

  def button(%{} = assigns) do
    assigns =
      assigns
      |> assign_new(:primary, fn -> false end)
      |> assign(:rest, assigns_to_attributes(assigns))

    ~H"""
    <%= if @primary do %>
      <button type="button" class="order-0 inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-purple-600 hover:bg-purple-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-500 sm:order-1 sm:ml-3" {@rest}>
        <%= render_slot(@inner_block) %>
      </button>
    <% else %>
      <button type="button" class="order-1 inline-flex items-center px-4 py-2 border border-gray-300 shadow-sm text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-500 sm:order-0 sm:ml-0 lg:ml-3" {@rest}>
        <%= render_slot(@inner_block) %>
      </button>
    <% end %>
    """
  end

  def table(assigns) do
    assigns =
      assigns
      |> assign_new(:row_id, fn -> false end)
      |> assign(:col, for(col <- assigns.col, col[:if] != false, do: col))

    ~H"""
    <div class="hidden mt-8 sm:block">
      <div class="align-middle inline-block min-w-full border-b border-gray-200">
        <table class="min-w-full">
          <thead>
            <tr class="border-t border-gray-200">
              <%= for col <- @col do %>
                <th
                  class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  <span class="lg:pl-2"><%= col.label %></span>
                </th>
              <% end %>
            </tr>
          </thead>
          <tbody class="bg-white divide-y divide-gray-100">
            <%= for {row, i} <- Enum.with_index(@rows) do %>
              <tr id={@row_id && @row_id.(row)} class="hover:bg-gray-50">
                <%= for col <- @col do %>
                  <td class={"px-6 py-3 whitespace-nowrap text-sm font-medium text-gray-900 #{if i == 0, do: "max-w-0 w-full"} #{col[:class]}"}>
                    <div class="flex items-center space-x-3 lg:pl-2">
                      <%= render_slot(col, row) %>
                    </div>
                  </td>
                <% end %>
              </tr>
            <% end %>
          </tbody>
        </table>
      </div>
    </div>
    """
  end

  def live_table(assigns) do
    assigns =
      assigns
      |> assign_new(:row_id, fn -> false end)
      |> assign_new(:active_id, fn -> nil end)
      |> assign_new(:owns_profile?, fn -> assigns.owns_profile? end)
      |> assign(:col, for(col <- assigns.col, col[:if] != false, do: col))

    ~H"""
    <div class="hidden mt-8 sm:block">
      <div class="align-middle inline-block min-w-full border-b border-gray-200">
        <table class="min-w-full">
          <thead>
            <tr class="border-t border-gray-200">
              <%= for col <- @col do %>
                <th
                  class="px-6 py-3 border-b border-gray-200 bg-gray-50 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                  <span class="lg:pl-2"><%= col.label %></span>
                </th>
              <% end %>
            </tr>
          </thead>
          <tbody id={@id} class="bg-white divide-y divide-gray-100" phx-update="append">
            <%= for {row, i} <- Enum.with_index(@rows) do %>
              <.live_component
                module={@module}
                id={@row_id.(row)}
                row={row} col={@col}
                index={i}
                active_id={@active_id}
                class="hover:bg-gray-50",
                owns_profile?={@owns_profile?}
              />
            <% end %>
          </tbody>
        </table>
      </div>
    </div>
    """
  end

  @doc """
  Calls a wired up event listener to call a function with arguments.

      window.addEventListener("js:exec", e => e.target[e.detail.call](...e.detail.args))
  """
  def js_exec(js \\ %JS{}, to, call, args) do
    JS.dispatch(js, "js:exec", to: to, detail: %{call: call, args: args})
  end

  defp assign_rest(assigns, exclude) do
    assign(assigns, :rest, assigns_to_attributes(assigns, exclude))
  end
end