mobilizon/js/src/components/Participation/ParticipationWithoutAccount.vue

<template>
    <section class="container section hero is-fullheight">
        <div class="hero-body">
            <div class="container">
                <form @submit.prevent="joinEvent">
                    <p>{{ $t('This Mobilizon instance and this event organizer allows anonymous participations, but requires validation through email confirmation.') }}</p>
                    <b-message type="is-info">{{ $t("Your email will only be used to confirm that you're a real person and send you eventual updates for this event. It will NOT be transmitted to other instances or to the event organizer.") }}</b-message>
                    <b-message type="is-danger" v-if="error">{{ error }}</b-message>
                    <b-field :label="$t('Email')">
                        <b-field>
                            <b-input
                                    type="email"
                                    v-model="anonymousParticipation.email"
                                    placeholder="Your email"
                                    required>
                            </b-input>
                            <p class="control">
                                <b-button type="is-primary" native-type="submit">{{ $t('Send email') }}</b-button>
                            </p>
                        </b-field>
                    </b-field>
                    <div class="has-text-centered">
                        <b-button native-type="button" tag="a" type="is-text" @click="$router.go(-1)">
                            {{ $t('Back to previous page') }}
                        </b-button>
                    </div>
                </form>
            </div>
        </div>
    </section>
</template>
<script lang="ts">
import { Component, Prop, Vue } from 'vue-property-decorator';
import { EventModel, IEvent, IParticipant, ParticipantRole } from '@/types/event.model';
import { FETCH_EVENT, JOIN_EVENT } from '@/graphql/event';
import { IConfig } from '@/types/config.model';
import { CONFIG } from '@/graphql/config';
import { addLocalUnconfirmedAnonymousParticipation } from '@/services/AnonymousParticipationStorage';
import { RouteName } from '@/router';

@Component({
  apollo: {
    event: {
      query: FETCH_EVENT,
      variables() {
        return {
          uuid: this.uuid,
        };
      },
      skip() { return !this.uuid; },
      update: (data) => new EventModel(data.event),
    },
    config: CONFIG,
  },
})
export default class ParticipationWithoutAccount extends Vue {
  @Prop({ type: String, required: true }) uuid!: string;
  anonymousParticipation: { email: String } = { email: '' };
  event!: IEvent;
  config!: IConfig;
  error: String|boolean = false;

  async joinEvent() {
    this.error = false;
    try {
      const { data } = await this.$apollo.mutate<{ joinEvent: IParticipant }>({
        mutation: JOIN_EVENT,
        variables: {
          eventId: this.event.id,
          actorId: this.config.anonymous.actorId,
          email: this.anonymousParticipation.email,
        },
        update: (store, { data }) => {
          if (data == null) return;

          const cachedData = store.readQuery<{ event: IEvent }>({
            query: FETCH_EVENT,
            variables: { uuid: this.event.uuid },
          });
          if (cachedData == null) return;
          const { event } = cachedData;
          if (event === null) {
            console.error('Cannot update event participant cache, because of null value.');
            return;
          }

          if (data.joinEvent.role === ParticipantRole.NOT_CONFIRMED) {
            event.participantStats.notConfirmed = event.participantStats.notConfirmed + 1;
          } else {
            event.participantStats.going = event.participantStats.going + 1;
            event.participantStats.participant = event.participantStats.participant + 1;
          }

          store.writeQuery({ query: FETCH_EVENT, variables: { uuid: this.event.uuid }, data: { event } });
        },
      });
      if (data && data.joinEvent.metadata.cancellationToken) {
        await addLocalUnconfirmedAnonymousParticipation(this.event, data.joinEvent.metadata.cancellationToken);
        return this.$router.push({ name: RouteName.EVENT, params: { uuid: this.event.uuid } });
      }
    } catch (e) {
      console.log(JSON.stringify(e));
      if (e.message === 'GraphQL error: You are already a participant of this event') {
        this.error = this.$t('This email is already registered as participant for this event') as string;
      }
    }
  }
}
</script>