Initial chat box; man phoenix does not have the best docs

1 files changed, 17 insertions, 3 deletions

diff --git a/lib/aggiedit_web/channels/post_channel.ex b/lib/aggiedit_web/channels/post_channel.ex
index 308c6de..ea79d76 100644
--- a/lib/aggiedit_web/channels/post_channel.ex
+++ b/lib/aggiedit_web/channels/post_channel.ex
@@ -2,21 +2,35 @@ defmodule AggieditWeb.PostChannel do
   use AggieditWeb, :channel
 
   alias Aggiedit.Roles
+  alias Aggiedit.Repo
   alias Aggiedit.Rooms
 
   @impl true
   def join("post:" <> post_id, _payload, socket) do
     post = Rooms.get_post!(post_id)
     if Roles.guard?(socket.assigns.current_user, :show, post) do
-      {:ok, socket}
+      send(self(), :after_join)
+      {:ok, assign(socket, %{:post => post})}
     else
       {:error, "You do not have permission to view this post."}
     end
   end
 
   @impl true
-  def handle_in("send", body, socket) do
-    broadcast!(socket, "shout", body)
+  def handle_info(:after_join, socket) do
+    comments = socket.assigns.post
+    |> Repo.preload(comments: [:user])
+    |> Map.get(:comments)
+    |> Enum.map(fn c -> Aggiedit.Post.Comment.serialize(c) end)
+    push(socket, "initial-comments", %{:comments => comments})
+    
+    {:noreply, socket}
+  end
+
+  @impl true
+  def handle_in("send", %{"body" => comment}=body, socket) do
+    {:ok, comment} = Rooms.comment_post(socket.assigns.post, socket.assigns.current_user, comment)
+    broadcast!(socket, "shout", Aggiedit.Post.Comment.serialize(comment))
     {:reply, :ok, socket}
   end
 end
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