feat: add links to cancel anonymous participations in emails

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/graphql/resolvers/participant.ex

@@ -176,7 +176,9 @@ defmodule Mobilizon.GraphQL.Resolvers.Participant do
 
         case Participations.leave(event, actor, %{local: false, cancellation_token: token}) do
           {:ok, _activity, %Participant{id: participant_id} = _participant} ->
-            {:ok, %{event: %{id: event_id}, actor: %{id: actor_id}, id: participant_id}}
+            {:ok, %Event{} = event} = Events.get_event_with_preload(event_id)
+            %Actor{} = actor = Actors.get_actor_with_preload!(actor_id)
+            {:ok, %{event: event, actor: actor, id: participant_id}}
 
           {:error, :is_only_organizer} ->
             {:error,
@@ -202,8 +204,11 @@ defmodule Mobilizon.GraphQL.Resolvers.Participant do
     with {:is_owned, %Actor{} = actor} <- User.owns_actor(user, actor_id),
          {:has_event, {:ok, %Event{} = event}} <-
            {:has_event, Events.get_event_with_preload(event_id)},
-         {:ok, _activity, _participant} <- Participations.leave(event, actor) do
+         {:ok, _activity, %Participant{id: participant_id} = _participant} <-
-      {:ok, %{event: %{id: event_id}, actor: %{id: actor_id}}}
+           Participations.leave(event, actor) do
+      {:ok, %Event{} = event} = Events.get_event_with_preload(event_id)
+      %Actor{} = actor = Actors.get_actor_with_preload!(actor_id)
+      {:ok, %{event: event, actor: actor, id: participant_id}}
     else
       {:has_event, _} ->
         {:error, "Event with this ID #{inspect(event_id)} doesn't exist"}

lib/graphql/schema/events/participant.ex

@@ -90,8 +90,8 @@ defmodule Mobilizon.GraphQL.Schema.Events.ParticipantType do
   object :deleted_participant do
     meta(:authorize, :all)
     field(:id, :id, description: "The participant ID")
-    field(:event, :deleted_object, description: "The participant's event")
+    field(:event, :event, description: "The participant's event")
-    field(:actor, :deleted_object, description: "The participant's actor")
+    field(:actor, :actor, description: "The participant's actor")
   end
 
   object :participant_mutations do

lib/web/controllers/page_controller.ex

@@ -26,6 +26,8 @@ defmodule Mobilizon.Web.PageController do
   defdelegate moderation_report(conn, params), to: PageController, as: :index
   @spec participation_email_confirmation(Plug.Conn.t(), any) :: Plug.Conn.t()
   defdelegate participation_email_confirmation(conn, params), to: PageController, as: :index
+  @spec participation_email_cancellation(Plug.Conn.t(), any) :: Plug.Conn.t()
+  defdelegate participation_email_cancellation(conn, params), to: PageController, as: :index
   @spec user_email_validation(Plug.Conn.t(), any) :: Plug.Conn.t()
   defdelegate user_email_validation(conn, params), to: PageController, as: :index
   @spec my_groups(Plug.Conn.t(), any) :: Plug.Conn.t()

lib/web/email/participation.ex

@@ -99,6 +99,7 @@ defmodule Mobilizon.Web.Email.Participation do
       locale: locale,
       event: event,
       jsonLDMetadata: json_ld(participant),
+      participant: participant,
       subject: subject
     })
   end
@@ -123,6 +124,7 @@ defmodule Mobilizon.Web.Email.Participation do
       locale: locale,
       event: event,
       jsonLDMetadata: json_ld(participant),
+      participant: participant,
       subject: subject
     })
   end

lib/web/router.ex

@@ -195,6 +195,12 @@ defmodule Mobilizon.Web.Router do
 
     get("/participation/email/confirm/:token", PageController, :participation_email_confirmation)
 
+    get(
+      "/participation/email/cancel/:uuid/:token",
+      PageController,
+      :participation_email_cancellation
+    )
+
     get("/validate/email/:token", PageController, :user_email_validation)
 
     get("/groups/me", PageController, :my_groups)

lib/web/templates/email/anonymous_participation_confirmation.html.heex

@@ -87,14 +87,39 @@
           style="padding: 20px 30px 40px 30px; color: #474467; font-family: 'Roboto', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;"
         >
           <p style="margin: 0">
-            <%= ngettext(
+            <%= gettext(
-              "Would you wish to cancel your attendance, visit the event page through the link above and click the « Attending » button.",
+              "If you wish to cancel your participation, simply click on the link below."
-              "Would you wish to cancel your attendance to one or several events, visit the event pages through the links above and click the « Attending » button.",
-              1
             ) %>
           </p>
         </td>
       </tr>
+      <tr>
+        <td bgcolor="#ffffff" align="left">
+          <table width="100%" border="0" cellspacing="0" cellpadding="0">
+            <tr>
+              <td bgcolor="#ffffff" align="center" style="padding: 20px 30px 60px 30px;">
+                <table border="0" cellspacing="0" cellpadding="0">
+                  <tr>
+                    <td align="center" style="border-radius: 3px;">
+                      <a
+                        href={
+                          ~p"/participation/email/cancel/#{@event.uuid}/#{@participant.metadata.cancellation_token}"
+                          |> url()
+                          |> URI.decode()
+                        }
+                        target="_blank"
+                        style="font-size: 20px; font-family: 'Roboto', Helvetica, Arial, sans-serif; color: #3C376E; text-decoration: none; padding: 15px 25px; border-radius: 2px; border: 1px solid #3C376E; display: inline-block;"
+                      >
+                        <%= gettext("Cancel my attendance") %>
+                      </a>
+                    </td>
+                  </tr>
+                </table>
+              </td>
+            </tr>
+          </table>
+        </td>
+      </tr>
       <tr>
         <td
           bgcolor="#ffffff"

lib/web/templates/email/event_participation_confirmed.html.heex

@@ -88,6 +88,48 @@
           </table>
         </td>
       </tr>
+      <%= if @participant.metadata.cancellation_token do %>
+        <tr>
+          <td
+            bgcolor="#ffffff"
+            align="left"
+            style="padding: 20px 30px 40px 30px; color: #474467; font-family: 'Roboto', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;"
+          >
+            <p style="margin: 0">
+              <%= gettext(
+                "If you wish to cancel your participation, simply click on the link below."
+              ) %>
+            </p>
+          </td>
+        </tr>
+        <tr>
+          <td bgcolor="#ffffff" align="left">
+            <table width="100%" border="0" cellspacing="0" cellpadding="0">
+              <tr>
+                <td bgcolor="#ffffff" align="center" style="padding: 20px 30px 60px 30px;">
+                  <table border="0" cellspacing="0" cellpadding="0">
+                    <tr>
+                      <td align="center" style="border-radius: 3px;">
+                        <a
+                          href={
+                            ~p"/participation/email/cancel/#{@event.uuid}/#{@participant.metadata.cancellation_token}"
+                            |> url()
+                            |> URI.decode()
+                          }
+                          target="_blank"
+                          style="font-size: 20px; font-family: 'Roboto', Helvetica, Arial, sans-serif; color: #3C376E; text-decoration: none; padding: 15px 25px; border-radius: 2px; border: 1px solid #3C376E; display: inline-block;"
+                        >
+                          <%= gettext("Cancel my attendance") %>
+                        </a>
+                      </td>
+                    </tr>
+                  </table>
+                </td>
+              </tr>
+            </table>
+          </td>
+        </tr>
+      <% else %>
         <tr>
           <td
             bgcolor="#ffffff"
@@ -101,6 +143,7 @@
             </p>
           </td>
         </tr>
+      <% end %>
     </table>
     <!--[if (gte mso 9)|(IE)]>
     </td>

src/components/Participation/CancelParticipation.vue

@@ -0,0 +1,107 @@
+<template>
+  <section class="container mx-auto">
+    <h1 class="title" v-if="loading">
+      {{ t("Your participation is being cancelled") }}
+    </h1>
+    <div v-else>
+      <div v-if="failed && !leftEvent">
+        <o-notification
+          :title="t('Error while cancelling your participation')"
+          variant="danger"
+        >
+          {{
+            t(
+              "Either your participation has already been cancelled, either the validation token is incorrect."
+            )
+          }}
+        </o-notification>
+      </div>
+      <div v-else-if="leftEvent">
+        <h1 class="title">
+          {{ t("Your participation has been cancelled") }}
+        </h1>
+        <div class="columns has-text-centered">
+          <div class="column">
+            <o-button
+              tag="router-link"
+              variant="primary"
+              size="large"
+              :to="{
+                name: RouteName.EVENT,
+                params: { uuid: leftEvent.uuid },
+              }"
+              >{{ t("Return to the event page") }}</o-button
+            >
+          </div>
+        </div>
+      </div>
+    </div>
+  </section>
+</template>
+
+<script lang="ts" setup>
+import RouteName from "../../router/name";
+import { LEAVE_EVENT } from "../../graphql/event";
+import { computed, ref, watchEffect } from "vue";
+import { useMutation } from "@vue/apollo-composable";
+import { useI18n } from "vue-i18n";
+import { useHead } from "@unhead/vue";
+import { IActor } from "@/types/actor";
+import { IEvent } from "@/types/event.model";
+import { useAnonymousActorId } from "@/composition/apollo/config";
+import { useFetchEventBasic } from "@/composition/apollo/event";
+
+const { t } = useI18n({ useScope: "global" });
+
+useHead({
+  title: computed(() => t("Confirm participation")),
+});
+
+const props = defineProps<{
+  uuid: string;
+  token: string;
+}>();
+
+const participationToken = computed(() => props.token);
+const eventUUID = computed(() => props.uuid);
+
+const loading = ref(true);
+const failed = ref(false);
+const leftEvent = ref<IEvent | null>(null);
+const { anonymousActorId } = useAnonymousActorId();
+
+const { event } = useFetchEventBasic(eventUUID);
+
+const { onDone, onError, mutate } = useMutation<{
+  leaveEvent: {
+    id: string;
+    actor: IActor;
+    event: IEvent;
+  };
+}>(LEAVE_EVENT);
+
+watchEffect(() => {
+  if (participationToken.value && event.value) {
+    mutate({
+      token: participationToken.value,
+      eventId: event.value.id,
+      actorId: anonymousActorId.value,
+    });
+  }
+});
+
+onDone(async ({ data }) => {
+  if (data?.leaveEvent.event) {
+    leftEvent.value = data?.leaveEvent.event;
+  } else {
+    failed.value = true;
+  }
+  loading.value = false;
+});
+
+onError((err) => {
+  console.error(err);
+  failed.value = true;
+  loading.value = false;
+});
+</script>

src/graphql/event.ts

@@ -322,9 +322,14 @@ export const JOIN_EVENT = gql`
 export const LEAVE_EVENT = gql`
   mutation LeaveEvent($eventId: ID!, $actorId: ID!, $token: String) {
     leaveEvent(eventId: $eventId, actorId: $actorId, token: $token) {
+      id
       actor {
         id
       }
+      event {
+        id
+        uuid
+      }
     }
   }
 `;

src/i18n/en_US.json

@@ -1630,5 +1630,11 @@
   "This announcement will be send to all participants with the statuses selected below. They will not be allowed to reply to your announcement, but they can create a new conversation with you.": "This announcement will be send to all participants with the statuses selected below. They will not be allowed to reply to your announcement, but they can create a new conversation with you.",
   "The following participants are groups, which means group members are able to reply to this conversation:": "The following participants are groups, which means group members are able to reply to this conversation:",
   "Sent to {count} participants": "Sent to no participants|Sent to one participant|Sent to {count} participants",
-  "There's no announcements yet": "There's no announcements yet"
+  "There's no announcements yet": "There's no announcements yet",
+  "Your participation is being cancelled": "Your participation is being cancelled",
+  "Error while cancelling your participation": "Error while cancelling your participation",
+  "Either your participation has already been cancelled, either the validation token is incorrect.": "Either your participation has already been cancelled, either the validation token is incorrect.",
+  "Your participation has been cancelled": "Your participation has been cancelled",
+  "Return to the event page": "Return to the event page",
+  "Cancel participation": "Cancel participation"
 }

src/i18n/fr_FR.json

@@ -1624,5 +1624,11 @@
   "{user}'s follow request was accepted": "La demande de suivi de {user} a été acceptée",
   "{user}'s follow request was rejected": "La demande de suivi de {user} a été rejetée",
   "© The OpenStreetMap Contributors": "© Les Contributeur·ices OpenStreetMap",
-  "There's no announcements yet": "Il n'y a encore aucune annonce"
+  "There's no announcements yet": "Il n'y a encore aucune annonce",
+  "Your participation is being cancelled": "Votre participation est en cours d'annulation",
+  "Error while cancelling your participation": "Erreur lors de l'annulation de votre participation",
+  "Either your participation has already been cancelled, either the validation token is incorrect.": "Soit votre participation a déjà été annulée, soit le jeton de validation est incorrect.",
+  "Your participation has been cancelled": "Votre participation a été annulée",
+  "Return to the event page": "Retourner à la page de l'événement",
+  "Cancel participation": "Annuler la participation"
 }

src/router/event.ts

@@ -20,6 +20,7 @@ export enum EventRouteName {
   EVENT_PARTICIPATE_WITHOUT_ACCOUNT = "EVENT_PARTICIPATE_WITHOUT_ACCOUNT",
   EVENT_PARTICIPATE_LOGGED_OUT = "EVENT_PARTICIPATE_LOGGED_OUT",
   EVENT_PARTICIPATE_CONFIRM = "EVENT_PARTICIPATE_CONFIRM",
+  EVENT_PARTICIPATE_CANCEL = "EVENT_PARTICIPATE_CANCEL",
   TAG = "Tag",
 }
 
@@ -124,6 +125,18 @@ export const eventRoutes: RouteRecordRaw[] = [
     },
     props: true,
   },
+  {
+    path: "/participation/email/cancel/:uuid/:token",
+    name: EventRouteName.EVENT_PARTICIPATE_CANCEL,
+    component: () =>
+      import("../components/Participation/CancelParticipation.vue"),
+    meta: {
+      announcer: {
+        message: (): string => t("Cancel participation") as string,
+      },
+    },
+    props: true,
+  },
   {
     path: "/tag/:tag",
     name: EventRouteName.TAG,