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