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Add backend and endpoints for Feed Tokens

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Closes #19 #86 #87

Signed-off-by: Thomas Citharel <tcit@tcit.fr>
This commit is contained in:
Thomas Citharel 2019-03-08 12:25:06 +01:00
parent 2eeabe5a23
commit c61c75163f
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GPG Key ID: A061B9DDE0CA0773
11 changed files with 476 additions and 9 deletions
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3
lib/mobilizon/actors/actor.ex
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@ -24,7 +24,7 @@ defmodule Mobilizon.Actors.Actor do
alias Mobilizon.Actors
alias Mobilizon.Users.User
alias Mobilizon.Actors.{Actor, Follower, Member}
alias Mobilizon.Events.Event
alias Mobilizon.Events.{Event, FeedToken}
import Ecto.Query
import Mobilizon.Ecto
@ -58,6 +58,7 @@ defmodule Mobilizon.Actors.Actor do
has_many(:organized_events, Event, foreign_key: :organizer_actor_id)
many_to_many(:memberships, Actor, join_through: Member)
belongs_to(:user, User)
has_many(:feed_tokens, FeedToken, foreign_key: :actor_id)
timestamps()
end

139
lib/mobilizon/events/events.ex
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@ -577,7 +577,7 @@ defmodule Mobilizon.Events do
## Examples
iex> list_participants_for_event(someuuid)
iex> list_participants_for_event(some_uuid)
[%Participant{}, ...]
"""
@ -594,6 +594,32 @@ defmodule Mobilizon.Events do
)
end
@doc """
Returns the list of participations for an actor.
Default behaviour is to not return :not_approved participants
## Examples
iex> list_participants_for_actor(%Actor{})
[%Participant{}, ...]
"""
def list_event_participations_for_actor(%Actor{id: id}, page \\ nil, limit \\ nil) do
Repo.all(
from(
e in Event,
join: p in Participant,
join: a in Actor,
on: p.actor_id == a.id,
on: p.event_id == e.id,
where: a.id == ^id and p.role != ^:not_approved,
preload: [:tags]
)
|> paginate(page, limit)
)
end
@doc """
Returns the list of organizers participants for an event.
@ -1119,4 +1145,115 @@ defmodule Mobilizon.Events do
def change_comment(%Comment{} = comment) do
Comment.changeset(comment, %{})
end
alias Mobilizon.Events.FeedToken
@doc """
Gets a single feed token.
## Examples
iex> get_feed_token("123")
{:ok, %FeedToken{}}
iex> get_feed_token("456")
{:error, nil}
"""
def get_feed_token(token) do
from(
tk in FeedToken,
where: tk.token == ^token,
preload: [:actor, :user]
)
|> Repo.one()
end
@doc """
Gets a single feed token.
Raises `Ecto.NoResultsError` if the FeedToken does not exist.
## Examples
iex> get_feed_token!(123)
%FeedToken{}
iex> get_feed_token!(456)
** (Ecto.NoResultsError)
"""
def get_feed_token!(token) do
from(
tk in FeedToken,
where: tk.token == ^token,
preload: [:actor, :user]
)
|> Repo.one!()
end
@doc """
Creates a feed token.
## Examples
iex> create_feed_token(%{field: value})
{:ok, %FeedToken{}}
iex> create_feed_token(%{field: bad_value})
{:error, %Ecto.Changeset{}}
"""
def create_feed_token(attrs \\ %{}) do
%FeedToken{}
|> FeedToken.changeset(attrs)
|> Repo.insert()
end
@doc """
Updates a feed token.
## Examples
iex> update_feed_token(feed_token, %{field: new_value})
{:ok, %FeedToken{}}
iex> update_feed_token(feed_token, %{field: bad_value})
{:error, %Ecto.Changeset{}}
"""
def update_feed_token(%FeedToken{} = feed_token, attrs) do
feed_token
|> FeedToken.changeset(attrs)
|> Repo.update()
end
@doc """
Deletes a FeedToken.
## Examples
iex> delete_feed_token(feed_token)
{:ok, %FeedToken{}}
iex> delete_feed_token(feed_token)
{:error, %Ecto.Changeset{}}
"""
def delete_feed_token(%FeedToken{} = feed_token) do
Repo.delete(feed_token)
end
@doc """
Returns an `%Ecto.Changeset{}` for tracking feed_token changes.
## Examples
iex> change_feed_token(feed_token)
%Ecto.Changeset{source: %FeedToken{}}
"""
def change_feed_token(%FeedToken{} = feed_token) do
FeedToken.changeset(feed_token, %{})
end
end

26
lib/mobilizon/events/feed_token.ex Normal file
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@ -0,0 +1,26 @@
defmodule Mobilizon.Events.FeedToken do
@moduledoc """
Represents a Token for a Feed of events
"""
use Ecto.Schema
import Ecto.Changeset
alias Mobilizon.Events.FeedToken
alias Mobilizon.Actors.Actor
alias Mobilizon.Users.User
@primary_key false
schema "feed_token" do
field(:token, :string, primary_key: true)
belongs_to(:actor, Actor)
belongs_to(:user, User)
timestamps(updated_at: false)
end
@doc false
def changeset(%FeedToken{} = feed_token, attrs) do
feed_token
|> Ecto.Changeset.cast(attrs, [:token, :actor_id, :user_id])
|> validate_required([:token, :user_id])
end
end

2
lib/mobilizon/users/user.ex
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@ -15,6 +15,7 @@ defmodule Mobilizon.Users.User do
alias Mobilizon.Actors.Actor
alias Mobilizon.Users.User
alias Mobilizon.Service.EmailChecker
alias Mobilizon.Events.FeedToken
schema "users" do
field(:email, :string)
@ -28,6 +29,7 @@ defmodule Mobilizon.Users.User do
field(:confirmation_token, :string)
field(:reset_password_sent_at, :utc_datetime)
field(:reset_password_token, :string)
has_many(:feed_tokens, FeedToken, foreign_key: :user_id)
timestamps()
end

28
lib/mobilizon_web/controllers/feed_controller.ex
View File

@ -45,4 +45,32 @@ defmodule MobilizonWeb.FeedController do
|> send_file(404, "priv/static/index.html")
end
end
def going(conn, %{"token" => token, "format" => "ics"}) do
with {status, data} when status in [:ok, :commit] <-
Cachex.fetch(:ics, "token_" <> token) do
conn
|> put_resp_content_type("text/calendar")
|> send_resp(200, data)
else
_err ->
conn
|> put_resp_content_type("text/html")
|> send_file(404, "priv/static/index.html")
end
end
def going(conn, %{"token" => token, "format" => "atom"}) do
with {status, data} when status in [:ok, :commit] <-
Cachex.fetch(:feed, "token_" <> token) do
conn
|> put_resp_content_type("application/atom+xml")
|> send_resp(200, data)
else
_err ->
conn
|> put_resp_content_type("text/html")
|> send_file(404, "priv/static/index.html")
end
end
end

1
lib/mobilizon_web/router.ex
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@ -64,6 +64,7 @@ defmodule MobilizonWeb.Router do
get("/@:name/feed/:format", FeedController, :actor)
get("/events/:uuid/export/:format", FeedController, :event)
get("/events/going/:token/:format", FeedController, :going)
end
scope "/", MobilizonWeb do

71
lib/service/export/feed.ex
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@ -3,14 +3,17 @@ defmodule Mobilizon.Service.Export.Feed do
Serve Atom Syndication Feeds
"""
alias Mobilizon.Users.User
alias Mobilizon.Users
alias Mobilizon.Actors
alias Mobilizon.Actors.Actor
alias Mobilizon.Events
alias Mobilizon.Events.Event
alias Mobilizon.Events.{Event, FeedToken}
alias Atomex.{Feed, Entry}
import MobilizonWeb.Gettext
alias MobilizonWeb.Router.Helpers, as: Routes
alias MobilizonWeb.Endpoint
require Logger
@version Mix.Project.config()[:version]
def version(), do: @version
@ -25,6 +28,16 @@ defmodule Mobilizon.Service.Export.Feed do
end
end
@spec create_cache(String.t()) :: {:commit, String.t()} | {:ignore, any()}
def create_cache("token_" <> token) do
with {:ok, res} <- fetch_events_from_token(token) do
{:commit, res}
else
err ->
{:ignore, err}
end
end
@spec fetch_actor_event_feed(String.t()) :: String.t()
defp fetch_actor_event_feed(name) do
with %Actor{} = actor <- Actors.get_local_actor_by_name(name),
@ -37,17 +50,22 @@ defmodule Mobilizon.Service.Export.Feed do
end
# Build an atom feed from actor and it's public events
@spec build_actor_feed(Actor.t(), list()) :: String.t()
defp build_actor_feed(%Actor{} = actor, events) do
@spec build_actor_feed(Actor.t(), list(), boolean()) :: String.t()
defp build_actor_feed(%Actor{} = actor, events, public \\ true) do
display_name = Actor.display_name(actor)
self_url = Routes.feed_url(Endpoint, :actor, actor.preferred_username, "atom") |> URI.decode()
title =
if public,
do: "%{actor}'s public events feed on Mobilizon",
else: "%{actor}'s private events feed on Mobilizon"
# Title uses default instance language
feed =
Feed.new(
self_url,
DateTime.utc_now(),
gettext("%{actor}'s public events feed", actor: display_name)
Gettext.gettext(MobilizonWeb.Gettext, title, actor: display_name)
)
|> Feed.author(display_name, uri: actor.url)
|> Feed.link(self_url, rel: "self")
@ -86,8 +104,51 @@ defmodule Mobilizon.Service.Export.Feed do
Entry.build(entry)
else
{:error, _html, error_messages} ->
require Logger
Logger.error("Unable to produce HTML for Markdown", details: inspect(error_messages))
end
end
@spec fetch_events_from_token(String.t()) :: String.t()
defp fetch_events_from_token(token) do
with %FeedToken{actor: actor, user: %User{} = user} <- Events.get_feed_token(token) do
case actor do
%Actor{} = actor ->
events = fetch_identity_going_to_events(actor)
{:ok, build_actor_feed(actor, events, false)}
nil ->
with actors <- Users.get_actors_for_user(user),
events <-
actors
|> Enum.map(&Events.list_event_participations_for_actor/1)
|> Enum.concat() do
{:ok, build_user_feed(events, user, token)}
end
end
end
end
defp fetch_identity_going_to_events(%Actor{} = actor) do
with events <- Events.list_event_participations_for_actor(actor) do
events
end
end
# Build an atom feed from actor and it's public events
@spec build_user_feed(list(), User.t(), String.t()) :: String.t()
defp build_user_feed(events, %User{email: email}, token) do
self_url = Routes.feed_url(Endpoint, :going, token, "atom") |> URI.decode()
# Title uses default instance language
Feed.new(
self_url,
DateTime.utc_now(),
gettext("Feed for %{email} on Mobilizon", email: email)
)
|> Feed.link(self_url, rel: "self")
|> Feed.generator("Mobilizon", uri: "https://joinmobilizon.org", version: version())
|> Feed.entries(Enum.map(events, &get_entry/1))
|> Feed.build()
|> Atomex.generate_document()
end
end

43
lib/service/export/icalendar.ex
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@ -3,10 +3,12 @@ defmodule Mobilizon.Service.Export.ICalendar do
Export an event to iCalendar format
"""
alias Mobilizon.Events.Event
alias Mobilizon.Events.{Event, FeedToken}
alias Mobilizon.Events
alias Mobilizon.Actors.Actor
alias Mobilizon.Actors
alias Mobilizon.Users.User
alias Mobilizon.Users
@doc """
Export a public event to iCalendar format.
@ -47,6 +49,13 @@ defmodule Mobilizon.Service.Export.ICalendar do
end
end
@spec export_private_actor(Actor.t()) :: String.t()
def export_private_actor(%Actor{} = actor) do
with events <- Events.list_event_participations_for_actor(actor) do
{:ok, %ICalendar{events: events |> Enum.map(&do_export_event/1)} |> ICalendar.to_ics()}
end
end
@doc """
Create cache for an actor
"""
@ -72,4 +81,36 @@ defmodule Mobilizon.Service.Export.ICalendar do
{:ignore, err}
end
end
@doc """
Create cache for an actor
"""
def create_cache("token_" <> token) do
with {:ok, res} <- fetch_events_from_token(token) do
{:commit, res}
else
err ->
{:ignore, err}
end
end
@spec fetch_events_from_token(String.t()) :: String.t()
defp fetch_events_from_token(token) do
with %FeedToken{actor: actor, user: %User{} = user} <- Events.get_feed_token(token) do
case actor do
%Actor{} = actor ->
export_private_actor(actor)
nil ->
with actors <- Users.get_actors_for_user(user),
events <-
actors
|> Enum.map(&Events.list_event_participations_for_actor/1)
|> Enum.concat() do
{:ok,
%ICalendar{events: events |> Enum.map(&do_export_event/1)} |> ICalendar.to_ics()}
end
end
end
end
end

13
priv/repo/migrations/20190307133518_feed_token_table.exs Normal file
View File

@ -0,0 +1,13 @@
defmodule Mobilizon.Repo.Migrations.FeedTokenTable do
use Ecto.Migration
def change do
create table(:feed_token, primary_key: false) do
add(:token, :string, primary_key: true)
add(:actor_id, references(:actors, on_delete: :delete_all), null: true)
add(:user_id, references(:users, on_delete: :delete_all), null: false)
timestamps(updated_at: false)
end
end
end

149
test/mobilizon_web/controllers/feed_controller_test.exs
View File

@ -24,7 +24,7 @@ defmodule MobilizonWeb.FeedControllerTest do
{:ok, feed} = ElixirFeedParser.parse(conn.resp_body)
assert feed.title == actor.preferred_username <> "'s public events feed"
assert feed.title == actor.preferred_username <> "'s public events feed on Mobilizon"
[entry1, entry2] = entries = feed.entries
@ -139,4 +139,151 @@ defmodule MobilizonWeb.FeedControllerTest do
assert entry1.categories == [event1.category, tag1.slug, tag2.slug]
end
end
describe "/events/going/:token/atom" do
test "it returns an atom feed of all events for all identities for an user token", %{
conn: conn
} do
user = insert(:user)
actor1 = insert(:actor, user: user)
actor2 = insert(:actor, user: user)
event1 = insert(:event)
event2 = insert(:event)
insert(:participant, event: event1, actor: actor1)
insert(:participant, event: event2, actor: actor2)
feed_token = insert(:feed_token, user: user, actor: nil)
conn =
conn
|> get(
Routes.feed_url(Endpoint, :going, feed_token.token, "atom")
|> URI.decode()
)
assert response(conn, 200) =~ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
assert response_content_type(conn, :xml) =~ "charset=utf-8"
{:ok, feed} = ElixirFeedParser.parse(conn.resp_body)
assert feed.title == "Feed for #{user.email} on Mobilizon"
entries = feed.entries
Enum.each(entries, fn entry ->
assert entry.title in [event1.title, event2.title]
end)
end
test "it returns an atom feed of all events a single identity for an actor token", %{
conn: conn
} do
user = insert(:user)
actor1 = insert(:actor, user: user)
actor2 = insert(:actor, user: user)
event1 = insert(:event)
event2 = insert(:event)
insert(:participant, event: event1, actor: actor1)
insert(:participant, event: event2, actor: actor2)
feed_token = insert(:feed_token, user: user, actor: actor1)
conn =
conn
|> put_req_header("accept", "application/atom+xml")
|> get(
Routes.feed_url(Endpoint, :going, feed_token.token, "atom")
|> URI.decode()
)
assert response(conn, 200) =~ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
assert response_content_type(conn, :xml) =~ "charset=utf-8"
{:ok, feed} = ElixirFeedParser.parse(conn.resp_body)
assert feed.title == "#{actor1.preferred_username}'s private events feed on Mobilizon"
[entry] = feed.entries
assert entry.title == event1.title
end
test "it returns 404 for an not existing feed", %{conn: conn} do
conn =
conn
|> get(
Routes.feed_url(Endpoint, :going, "not existing", "atom")
|> URI.decode()
)
assert response(conn, 404)
end
end
describe "/events/going/:token/ics" do
test "it returns an ical feed of all events for all identities for an user token", %{
conn: conn
} do
user = insert(:user)
actor1 = insert(:actor, user: user)
actor2 = insert(:actor, user: user)
event1 = insert(:event)
event2 = insert(:event)
insert(:participant, event: event1, actor: actor1)
insert(:participant, event: event2, actor: actor2)
feed_token = insert(:feed_token, user: user, actor: nil)
conn =
conn
|> put_req_header("accept", "text/calendar")
|> get(
Routes.feed_url(Endpoint, :going, feed_token.token, "ics")
|> URI.decode()
)
assert response(conn, 200) =~ "BEGIN:VCALENDAR"
assert response_content_type(conn, :calendar) =~ "charset=utf-8"
entries = ExIcal.parse(conn.resp_body)
Enum.each(entries, fn entry ->
assert entry.summary in [event1.title, event2.title]
end)
end
test "it returns an ical feed of all events a single identity for an actor token", %{
conn: conn
} do
user = insert(:user)
actor1 = insert(:actor, user: user)
actor2 = insert(:actor, user: user)
event1 = insert(:event)
event2 = insert(:event)
insert(:participant, event: event1, actor: actor1)
insert(:participant, event: event2, actor: actor2)
feed_token = insert(:feed_token, user: user, actor: actor1)
conn =
conn
|> put_req_header("accept", "text/calendar")
|> get(
Routes.feed_url(Endpoint, :going, feed_token.token, "ics")
|> URI.decode()
)
assert response(conn, 200) =~ "BEGIN:VCALENDAR"
assert response_content_type(conn, :calendar) =~ "charset=utf-8"
[entry1] = ExIcal.parse(conn.resp_body)
assert entry1.summary == event1.title
end
test "it returns 404 for an not existing feed", %{conn: conn} do
conn =
conn
|> get(
Routes.feed_url(Endpoint, :going, "not existing", "ics")
|> URI.decode()
)
assert response(conn, 404)
end
end
end

10
test/support/factory.ex
View File

@ -152,4 +152,14 @@ defmodule Mobilizon.Factory do
role: :not_approved
}
end
def feed_token_factory do
user = build(:user)
%Mobilizon.Events.FeedToken{
user: user,
actor: build(:actor, user: user),
token: Ecto.UUID.generate()
}
end
end