From bd8177a7c0aa75860ba1a41a608a7f740ace7ba2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=BCdiger=20Diedrich?= <email@rdiedrich.org>
Date: Mon, 25 Jul 2022 11:04:46 +0200
Subject: [PATCH] we don't need to pass self() on to client functions

---
 lib/something_erlang/grover.ex                | 10 ++---
 .../live/thread_live/show.ex                  | 41 ++++++++++++++++---
 2 files changed, 41 insertions(+), 10 deletions(-)

diff --git a/lib/something_erlang/grover.ex b/lib/something_erlang/grover.ex
index 982deb2..a348e1c 100644
--- a/lib/something_erlang/grover.ex
+++ b/lib/something_erlang/grover.ex
@@ -3,15 +3,15 @@ defmodule SomethingErlang.Grover do
 
   require Logger
 
-  def mount(lv_pid, user, thread_id) do
+  def mount(user, thread_id) do
     DynamicSupervisor.start_child(
       SomethingErlang.Supervisor.Grovers,
-      {__MODULE__, [lv_pid, user, thread_id]}
+      {__MODULE__, [self(), user, thread_id]}
     )
   end
 
-  def get_thread!(lv_pid, thread_id, page_number) do
-    GenServer.call(via(lv_pid), {:show_thread, thread_id, page_number})
+  def get_thread!(thread_id, page_number) do
+    GenServer.call(via(self()), {:show_thread, thread_id, page_number})
   end
 
   def start_link([lv_pid, user, thread_id]) do
@@ -47,9 +47,9 @@ defmodule SomethingErlang.Grover do
     Logger.debug "received :DOWN from: #{inspect(state.lv_pid)} reason: #{inspect(reason)}"
     case reason do
       {:shutdown, _} -> {:stop, :normal, state}
+      :killed -> {:stop, :normal, state}
       _ -> {:noreply, state}
     end
-    |> IO.inspect()
   end
 
   defp via(lv_pid),
diff --git a/lib/something_erlang_web/live/thread_live/show.ex b/lib/something_erlang_web/live/thread_live/show.ex
index 8d2320b..202e724 100644
--- a/lib/something_erlang_web/live/thread_live/show.ex
+++ b/lib/something_erlang_web/live/thread_live/show.ex
@@ -9,13 +9,13 @@ defmodule SomethingErlangWeb.ThreadLive.Show do
 
   @impl true
   def mount(%{"id" => id} = _params, _session, socket) do
-    Grover.mount(self(), socket.assigns.current_user, id)
+    Grover.mount(socket.assigns.current_user, id)
     {:ok, socket}
   end
 
   @impl true
   def handle_params(%{"id" => id, "page" => page}, _, socket) do
-    thread = Grover.get_thread!(self(), id, page |> String.to_integer())
+    thread = Grover.get_thread!(id, page |> String.to_integer())
     {:noreply,
      socket
      |> assign(:thread, thread)}
@@ -40,12 +40,43 @@ defmodule SomethingErlangWeb.ThreadLive.Show do
 
   def user(assigns) do
     ~H"""
-    <aside class="userinfo shrink-0 w-[13em]">
-        <h3><%= @info.name %></h3>
-        <div class="title">
+    <aside class="userinfo bg-base-100 shrink-0 w-[13em]">
+        <h3 class="mb-4"><%= @info.name %></h3>
+        <div class="title text-sm pr-4">
             <%= raw @info.title %>
         </div>
     </aside>
     """
   end
+
+  def pagination(assigns) do
+    %{page: page_number, page_count: page_count} = assigns.thread
+
+    first_page_disabled_button = if page_number == 1, do: " btn-disabled", else: ""
+    last_page_disabled_button  = if page_number == page_count, do: " btn-disabled", else: ""
+    active_page_button = " btn-active"
+
+    prev_button_target = if page_number >= 1, do: page_number - 1, else: 1
+    next_button_target = if page_number < page_count, do: page_number + 1, else: page_count
+
+    buttons = [
+      %{label: "«", page: 1, special: first_page_disabled_button},
+      %{label: "‹", page: prev_button_target, special: first_page_disabled_button},
+      %{label: "#{page_number}", page: page_number, special: active_page_button},
+      %{label: "›", page: next_button_target, special: last_page_disabled_button},
+      %{label: "»", page: page_count, special: last_page_disabled_button}
+    ]
+
+    ~H"""
+    <div class="navbar my-4 bg-base-200">
+        <div class="flex-1"></div>
+        <div class="flex-none btn-group">
+            <%= for btn <- buttons do %>
+                <%= live_redirect btn.label, class: "btn btn-sm" <> btn.special,
+                to: Routes.thread_show_path(@socket, :show, @thread.id, page: btn.page) %>
+            <% end %>
+        </div>
+    </div>
+    """
+  end
 end