frenzy/lib/frenzy_web/controllers/feed_controller.ex

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defmodule FrenzyWeb.FeedController do
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use FrenzyWeb, :controller
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alias Frenzy.{Repo, Group, Feed, Item, Pipeline, Paginator}
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alias FrenzyWeb.Router.Helpers, as: Routes
alias FrenzyWeb.Endpoint
import Ecto.Query
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plug :user_owns_feed
defp user_owns_feed(%Plug.Conn{path_params: %{"id" => id}} = conn, _opts) do
user = conn.assigns[:user]
feed = Repo.get(Feed, id)
if Enum.any?(user.groups, fn g -> g.id == feed.group_id end) do
conn
|> assign(:feed, feed)
else
conn
|> put_flash(:error, "You do not have permission to access that resource.")
|> redirect(to: Routes.group_path(Endpoint, :index))
|> halt()
end
end
defp user_owns_feed(conn, _opts), do: conn
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def show(conn, %{"id" => id} = params) do
feed = conn.assigns[:feed]
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items =
Item
|> where([i], i.feed_id == ^id)
|> Paginator.paginate(params)
|> limit(50)
|> Repo.all()
|> Enum.sort_by(fn item -> item.date end, fn a, b ->
DateTime.compare(a, b) == :gt
end)
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render(conn, "show.html", %{
feed: feed,
items: items
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})
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end
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def create(conn, %{"feed" => %{"group_id" => group_id, "feed_url" => feed_url}}) do
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user = conn.assigns[:user]
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group = Repo.get(Group, group_id)
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feed_url = feed_url |> String.trim()
cond do
group != nil && group.user_id == user.id ->
if String.length(feed_url) > 0 do
changeset =
Ecto.build_assoc(group, :feeds, %{
feed_url: feed_url
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})
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{:ok, _feed} = Repo.insert(changeset)
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conn
|> put_flash(:info, "Feed created")
|> redirect(to: Routes.group_path(Endpoint, :show, group_id))
else
conn
|> put_flash(:error, "Feed URL must not be empty")
|> redirect(to: Routes.group_path(Endpoint, :show, group_id))
end
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true ->
conn
|> put_flash(:error, "Invalid group")
|> redirect(to: Routes.group_path(Endpoint, :index))
end
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end
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def edit(conn, _params) do
user = conn.assigns[:user]
feed = conn.assigns[:feed]
edit_changeset = Feed.changeset(feed, %{})
pipelines =
Repo.all(from p in Pipeline, where: p.user_id == ^user.id)
|> Enum.map(fn pipeline -> {pipeline.name, pipeline.id} end)
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render(conn, "edit.html", %{
feed: feed,
changeset: edit_changeset,
pipelines: [{"No Pipeline", nil} | pipelines],
refresh_frequencies: [
{"Every 30 minutes", 30 * 60},
{"Every hour", 60 * 60},
{"Every 6 hours", 6 * 60 * 60},
{"Every 24 hours", 24 * 60 * 60}
]
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})
end
def update(conn, %{"feed" => feed_params}) do
feed = conn.assigns[:feed]
changeset = Feed.changeset(feed, feed_params)
{:ok, feed} = Repo.update(changeset)
redirect(conn, to: Routes.feed_path(Endpoint, :show, feed.id))
end
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def delete(conn, _params) do
feed = conn.assigns[:feed]
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{:ok, _} = Repo.delete(feed)
redirect(conn, to: Routes.group_path(Endpoint, :show, feed.group_id))
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end
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def enable_filter(conn, _params) do
feed = conn.assigns[:feed]
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changeset = Feed.changeset(feed, %{filter_enabled: true})
Repo.update(changeset)
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redirect(conn, to: Routes.feed_path(Endpoint, :show, feed.id))
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end
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def disable_filter(conn, _params) do
feed = conn.assigns[:feed]
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changeset = Feed.changeset(feed, %{filter_enabled: false})
Repo.update(changeset)
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redirect(conn, to: Routes.feed_path(Endpoint, :show, feed.id))
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end
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def refresh(conn, _params) do
feed = conn.assigns[:feed]
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Frenzy.UpdateFeeds.refresh(Frenzy.UpdateFeeds, feed)
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conn
|> put_flash(:info, "Refreshing feed. Wait a moment before reloading...")
|> redirect(to: Routes.feed_path(Endpoint, :show, feed.id))
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end
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end