Add known group linker to event form

public/css/style.css

@@ -405,3 +405,44 @@ article.static-page header {
     margin-bottom: 1rem;
     border-bottom: 1px solid #e0e0e0;
 }
+
+.card--group-preview {
+    display: grid;
+    grid-template-columns: 60px 1fr;
+    overflow: hidden;
+    gap: 1rem;
+
+    transition: background-color 0.15s;
+}
+
+.card--group-preview:hover {
+    background-color: #f5f5f5;
+}
+
+.card--group-preview img {
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+}
+
+.card--group-preview__text {
+    text-decoration: none;
+    color: #1b1b1b;
+    overflow: hidden;
+    padding-right: 1rem;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+}
+
+.card--group-preview__text strong,
+.card--group-preview__text p {
+    overflow: hidden;
+    white-space: nowrap;
+    text-overflow: ellipsis;
+    margin: 0;
+}
+
+.card--group-preview:hover {
+    text-decoration: none;
+}

public/js/modules/event-edit.js

@@ -47,6 +47,13 @@ function editEventForm() {
                 this.data.timezone = event.target.value;
             });
             this.data.timezone = this.select2.val();
+
+            // Set checkboxes
+            this.data.eventGroupCheckbox = window.eventData.eventGroupID !== "";
+            this.data.interactionCheckbox = window.eventData.usersCanComment;
+            this.data.joinCheckbox = window.eventData.usersCanAttend;
+            this.data.maxAttendeesCheckbox =
+                window.eventData.maxAttendees !== null;
         },
         async submitForm() {
             this.submitting = true;

public/js/modules/group-linker.js

@@ -0,0 +1,85 @@
+function eventGroupLinker() {
+    return {
+        data: {
+            eventGroupID: "",
+            eventGroupEditToken: "",
+            groups: [],
+        },
+        async init() {
+            this.$watch("data.eventGroupID", () => {
+                this.$dispatch(
+                    "event-group-id-changed",
+                    this.data.eventGroupID,
+                );
+            });
+            this.$watch("data.eventGroupEditToken", () => {
+                this.$dispatch(
+                    "event-group-edit-token-changed",
+                    this.data.eventGroupEditToken,
+                );
+            });
+            if (window.eventData && window.eventData.eventGroupID !== "") {
+                this.data.eventGroupID = window.eventData.eventGroupID;
+            }
+            if (window.eventData && window.eventGroupEditToken !== "") {
+                this.data.eventGroupEditToken =
+                    window.eventData.eventGroupEditToken;
+            }
+            try {
+                const editTokens = JSON.parse(
+                    localStorage.getItem("editTokens"),
+                );
+                if (!editTokens) {
+                    return;
+                }
+                const response = await fetch("/known/groups", {
+                    method: "POST",
+                    body: JSON.stringify(editTokens),
+                    headers: {
+                        "Content-Type": "application/json",
+                    },
+                });
+                if (!response.ok) {
+                    return;
+                }
+                const json = await (await response).json();
+                this.data.groups = json;
+            } catch (e) {
+                return false;
+            }
+        },
+        selectGroup(e) {
+            const group = this.data.groups.find(
+                (group) => group.id === e.target.value,
+            );
+            if (!group) {
+                this.data.eventGroupID = "";
+                this.data.eventGroupEditToken = "";
+                return;
+            }
+            this.data.eventGroupID = group.id;
+            this.data.eventGroupEditToken = group.editToken;
+        },
+        showGroupPreview() {
+            return (
+                this.data.eventGroupID !== "" &&
+                this.data.groups.some(
+                    (group) =>
+                        group.id === this.data.eventGroupID &&
+                        group.editToken === this.data.eventGroupEditToken,
+                )
+            );
+        },
+        groupPreview() {
+            if (!this.showGroupPreview()) {
+                return {};
+            }
+            return this.data.groups.find(
+                (group) => group.id === this.data.eventGroupID,
+            );
+        },
+        resetGroupSelector() {
+            this.$refs.eventGroupSelect.value = "";
+        },
+    };
+}

src/routes/group.ts

@@ -7,6 +7,8 @@ import Jimp from "jimp";
 import { addToLog } from "../helpers.js";
 import EventGroup from "../models/EventGroup.js";
 import { sendEmailFromTemplate } from "../lib/email.js";
+import { marked } from "marked";
+import { renderPlain } from "../util/markdown.js";
 
 const config = getConfig();
 
@@ -237,4 +239,62 @@ router.put(
     },
 );
 
+// Accepts a JSON object of event/group IDs mapped to edit tokens.
+// Returns an object of basic group data for each of the IDs
+// which are valid groups and have an edit token which matches.
+router.post("/known/groups", async (req: Request, res: Response) => {
+    const known = req.body;
+    if (!known) {
+        return res.status(400).json({
+            errors: [
+                {
+                    message: "No known IDs were provided.",
+                },
+            ],
+        });
+    }
+
+    try {
+        const knownIDs = Object.keys(known);
+        const groups = await EventGroup.find({
+            id: { $in: knownIDs },
+        });
+        const knownGroups = groups.filter((group) => {
+            return group.editToken === known[group.id];
+        });
+        const groupData = knownGroups.map((group) => {
+            return {
+                id: group.id,
+                name: group.name,
+                description: marked
+                    .parse(group.description, {
+                        renderer: renderPlain(),
+                    })
+                    .split(" ")
+                    .splice(0, 40)
+                    .join(" ")
+                    .trim(),
+                image: group.image,
+                editToken: group.editToken,
+                url: `/group/${group.id}`,
+            };
+        });
+        return res.status(200).json(groupData);
+    } catch (err) {
+        console.error(err);
+        addToLog(
+            "getKnownGroups",
+            "error",
+            "Attempt to get known groups failed with error: " + err,
+        );
+        return res.status(500).json({
+            errors: [
+                {
+                    message: err,
+                },
+            ],
+        });
+    }
+});
+
 export default router;

views/newevent.handlebars

@@ -19,7 +19,15 @@
 
 <div id="newEventFormContainer">
   <h4 class="mb-2">Create an event</h4>
-  <form id="newEventForm" enctype="multipart/form-data" x-data="newEventForm()" x-init="init()" @submit.prevent="submitForm">
+  <form
+    id="newEventForm"
+    enctype="multipart/form-data"
+    x-data="newEventForm()"
+    x-init="init()"
+    @submit.prevent="submitForm"
+    @event-group-id-changed="data.eventGroupID = $event.detail"
+    @event-group-edit-token-changed="data.eventGroupEditToken = $event.detail"
+  >
     {{>eventForm}}
     <div class="form-group row">
       <div class="col-sm-12 pt-3 pb-3 text-center">
@@ -55,4 +63,5 @@
 </article>
 
 <script src="/js/generate-timezones.js"></script>
-<script src="/js/modules/new.js"></script>
+<script src="/js/modules/new.js"></script>
+<script src="/js/modules/group-linker.js"></script>

views/partials/editeventmodal.handlebars

@@ -8,8 +8,15 @@
         </button>
       </div>
       <div class="modal-body">
-        <form id="editEventForm" enctype="multipart/form-data" x-data="editEventForm()" x-init="init()"
-          @submit.prevent="submitForm">
+        <form
+          id="editEventForm"
+          enctype="multipart/form-data"
+          x-data="editEventForm()"
+          x-init="init()"
+          @submit.prevent="submitForm"
+          @event-group-id-changed="data.eventGroupID = $event.detail"
+          @event-group-edit-token-changed="data.eventGroupEditToken = $event.detail"
+        >
 
             {{> eventForm }}
 
@@ -47,3 +54,4 @@
 
 <script type="text/javascript" src="/js/generate-timezones.js"></script>
 <script type="text/javascript" src="/js/modules/event-edit.js"></script>
+<script src="/js/modules/group-linker.js"></script>

views/partials/eventForm.handlebars

@@ -80,18 +80,40 @@
       <div class="card-header">
         <strong>Link this event to an event group</strong>
       </div>
-      <div class="card-body">
+      <div class="card-body" x-data="eventGroupLinker()">
+        <div class="form-group-label" x-show="data.groups.length > 0">
+          <label>Choose a group you've edited before</label>
+        </div>
+        <div class="form-group" x-show="data.groups.length > 0">
+          <select x-ref="eventGroupSelect" id="eventGroupSelect" name="eventGroupSelect" class="form-control" x-on:change="selectGroup">
+            <option value="">Choose a group</option>
+            <template x-for="group in data.groups">
+              <option :value="group.id" x-text="group.name"></option>
+            </template> 
+          </select>
+        </div>
+        <a class="card shadow-sm card--group-preview mb-3" x-show="showGroupPreview()" x-bind:href="groupPreview().url" target="_blank">
+          <img :src="'/events/' + groupPreview().image" x-show="groupPreview().image"/>
+          <img src="/images/seigaiha-single.png" x-show="!groupPreview().image"/>
+          <div class="card--group-preview__text">
+            <strong x-text="groupPreview().name"></strong>
+            <p x-text="groupPreview().description"></p>
+          </div>
+        </a>
+        <div class="alert alert-info text-center" role="alert" x-show="data.groups.length > 0">
+          <i class="fas fa-info-circle"></i> You can also enter the group ID and secret editing code manually.
+        </div>
         <div class="form-group">
-          <label for="eventGroupID" class="col-12">Event group ID</label>
-          <div class="form-group col-12">
-            <input type="text" class="form-control" id="eventGroupID" name="eventGroupID" placeholder="" x-model="data.eventGroupID" >
+          <label for="eventGroupID">Event group ID</label>
+          <div class="form-group">
+            <input type="text" class="form-control" id="eventGroupID" name="eventGroupID" x-model="data.eventGroupID" x-on:input="resetGroupSelector">
             <small class="form-text">You can find this short string of characters in the event group's link, in your confirmation email, or on the event group's page.</small>
           </div>
         </div>
         <div class="form-group">
-          <label for="eventGroupEditToken" class="col-12">Event group secret editing code</label>
-          <div class="form-group col-12">
-            <input type="text" class="form-control" id="eventGroupEditToken" name="eventGroupEditToken" placeholder="" x-model="data.eventGroupEditToken" >
+          <label for="eventGroupEditToken">Event group secret editing code</label>
+          <div class="form-group">
+            <input type="text" class="form-control" id="eventGroupEditToken" name="eventGroupEditToken" x-model="data.eventGroupEditToken" x-on:input="resetGroupSelector">
             <small class="form-text">You can find this long string of characters in the confirmation email you received when you created the event group.</small>
           </div>
         </div>