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defmodule AggieditWeb.PostLive.Index do
use AggieditWeb, :live_view
alias Aggiedit.Roles
alias Aggiedit.Rooms
alias Aggiedit.Rooms.Post
alias Aggiedit.Repo
@impl true
def mount(%{"room_id" => _room_id} = params, session, socket) do
{:ok, socket} = assign_socket_room_and_user_or_error(params, session, socket)
case socket.assigns do
%{:room => room} ->
if connected?(socket), do: Rooms.subscribe(socket.assigns.room)
{:ok, assign(socket, %{:posts => room |> Repo.preload(posts: [:user, :upload]) |> Map.get(:posts)}), temporary_assigns: [posts: []]}
_ -> {:ok, socket}
end
end
@impl true
def handle_params(%{"id" => id}=params, _url, socket) do
post = Rooms.get_post!(id)
if Roles.guard?(socket.assigns.current_user, socket.assigns.live_action, post) do
{:noreply, apply_action(socket, socket.assigns.live_action, params)}
else
{:noreply, socket |> put_flash(:error, "You do not have permission to edit this post.") |> redirect(to: Routes.post_index_path(socket, :index, socket.assigns.room))}
end
end
@impl true
def handle_params(params, _url, socket) do
{:noreply, apply_action(socket, socket.assigns.live_action, params)}
end
defp apply_action(socket, :edit, %{"id" => id}) do
socket
|> assign(:page_title, "Edit Post")
|> assign(:post, Rooms.get_post!(id) |> Repo.preload(:upload))
end
defp apply_action(socket, :new, _params) do
socket
|> assign(:page_title, "New Post")
|> assign(:post, %Post{})
end
defp apply_action(socket, :index, _params) do
socket
|> assign(:page_title, "Listing Posts")
|> assign(:post, nil)
end
@impl true
def handle_event("delete", %{"id" => id}, socket) do
post = Rooms.get_post!(id)
if Roles.guard?(socket.assigns.current_user, :delete, post) do
Rooms.delete_post(post)
{:noreply, socket |> put_flash(:success, "Post deleted.") |> redirect(to: Routes.post_index_path(socket, :index, socket.assigns.room))}
else
{:noreply, socket |> put_flash(:error, "You do not have permission to delete this post.") |> redirect(to: Routes.post_index_path(socket, :index, socket.assigns.room))}
end
end
@impl true
def handle_info({action, post}, socket) when action in [:post_created, :post_updated, :post_deleted] do
{:noreply, update(socket, :posts, fn posts ->
[posts | post]
end)}
end
end
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