spa: add export calendar links to events page

also:
remove export button add as a link to bottom of page
change contactLink and webLink to computed properties instead of methods for consistency's sake

Author: ionous

cal/src/EventDetails.vue

@@ -63,6 +63,8 @@ export default {
           // done loading.
           const page = buildPage(evt, vm.calStart, to.fullPath);
           vm.evt = evt; 
+          // override the server's shareable with the spa's current page.
+          evt.shareable = window.location;
           vm.$emit("pageLoaded", page);
         });
       }
@@ -92,6 +94,7 @@ export default {
     const { caldaily_id } = this.$route.params;
     return {
       // placeholder empty event data
+      // 'id' will become valid when loading is finished
       evt: {
         caldaily_id,
       },
@@ -111,15 +114,27 @@ export default {
     },
     loopText() {
       return this.evt.loopride && 'Ride is a loop';
-    }
-  },
-  methods: {
-    webLink(evt) {
-      return helpers.getWebLink(evt.weburl);
     },
-    contactLink(evt) {
-      return helpers.getContactLink(evt.contact);
+    shareableLink() {
+      return this.evt.shareable;
+    },
+    exportLink()  {
+      // FIX: this matches the calendar but should be a single day.
+      const { series_id } = this.$route.params;
+      return dataPool.getExportURL(series_id);
+    },
+    addToGoogleLink() {
+      const { evt } = this;
+      return evt.id && helpers.getAddToGoogleLink(evt);
     },
+    webLink() {
+      const { evt } = this;
+      return evt.id && helpers.getWebLink(evt.weburl);
+    },
+    contactLink() {
+      const { evt } = this;
+      return evt.id && helpers.getContactLink(evt.contact);
+    }
   }
 }
 </script>
@@ -143,8 +158,8 @@ export default {
         <LocationLink :evt="evt"></LocationLink>
       </Term>
       <Term id="organizer"  label= "Organizer">
-          <span class="c-organizer__name c-organizer__name--link" v-if="contactLink(evt)">
-            <ExternalLink :href="contactLink(evt)">{{evt.organizer}}</ExternalLink>
+          <span class="c-organizer__name c-organizer__name--link" v-if="contactLink">
+            <ExternalLink :href="contactLink">{{evt.organizer}}</ExternalLink>
           </span>
           <span v-else class="c-organizer__name c-organizer__name--text">
             {{ evt.organizer }}
@@ -162,14 +177,19 @@ export default {
       <Term id="locend"     label= "End Location" pretext="Ending at " :text="evt.locend"/>
       <Term id="loop"       label= "Loop"         :text="loopText"/>
       <Term v-if="evt.weburl" label="More Info">
-        <ExternalLink :href="webLink(evt)">
+        <ExternalLink :href="webLink">
           {{evt.webname || evt.weburl}}
         </ExternalLink>
       </Term> 
     </dl>
     <p class="c-description">
       {{evt.details}}
     </p>
+    <ul class="c-detail-links" v-if="evt.id">
+      <li><a :href="shareableLink" class="c-links__share" rel="bookmark">Sharable link</a></li>
+      <li><a :href="exportLink" class="c-links__export">Export to calendar</a></li>
+      <li><a :href="addToGoogleLink" class="c-links__google" target="_blank">Add to Google Calendar</a></li>
+    </ul>
   </article>
 </template>
 
@@ -205,4 +225,26 @@ export default {
   margin-top: 1em;
   padding-top: 1em;
 }
+.c-detail-links {
+  display: flex;
+  justify-content: center;
+  flex-direction: column;
+  flex-flow: row wrap; 
+  list-style-type: none;
+  gap: 5px;
+  /* on safari empty tags collapse, on chrome they take up space.
+  this helps keep things consistent  */
+  margin: 1em 0;
+  padding-inline-start: 0px;
+
+  /* copied from main.css eventlink */
+  li {
+      border-right: 1px solid var(--page-text);
+      padding-right: 5px;
+      &:last-child {
+        border-right: none;
+      }
+    }
+}
+
 </style>

cal/src/calHelpers.js

@@ -54,6 +54,36 @@ export default {
     return friendlyTime(time) + suffix;
   },
 
+  // duplicated from calendars helpers
+  getAddToGoogleLink(event) {
+      const googleCalUrl = new URL('https://www.google.com/calendar/render');
+
+      const startDate = dayjs(`${event.date} ${event.time}`).toISOString();
+      const duration = event.duration ?? 60; // Google requires a duration and defaults to 60 minutes anyway
+      const endDate = dayjs(startDate).add(dayjs.duration({ 'minute': duration })).toISOString();
+      /**
+       * Matches anything that is not a word or whitespace
+       * @example
+       * "2025-05-21T16:30:00.000Z".replace(regex, '') // 20250521T163000000Z
+      */
+      const regex = /[^\w\s]/gi;
+
+      // Remove colons and periods for Google Calendar URL (2025-05-21T16:30:00.000Z => 20250521T163000000Z)
+      const calendarDates = `${startDate.replace(regex, '')}/${endDate.replace(regex, '')}`;
+
+      googleCalUrl.search = new URLSearchParams({
+        action: "TEMPLATE",
+        text: `shift2Bikes: ${event.title}`,
+        location: event.address,
+        details: `${event.details}\n\n${event.shareable}`,
+        dates: calendarDates,
+        sf: true, // ??
+        output: 'xml'
+      });
+
+      return googleCalUrl.toString();
+  },
+
   // https://jasonwatmore.com/vanilla-js-slugify-a-string-in-javascript
   // might want the server to do this; but fine for now.
   slugify(evt) {

cal/src/eventDetails.js

@@ -50,7 +50,6 @@ function buildShortcuts(evt, fullPath) {
       };
     },
     addevent: "/addevent/",
-    export: `/api/ics.php?id=${evt.id}`,
     // hide share till its ready
     // see also the ShortcutButton
     // this might depend on platform or sussing out capabilities.

cal/src/siteConfig.js

@@ -7,9 +7,11 @@ import siteInfo from 'extras/siteInfo.json'
 import dayjs from 'dayjs'
 import advancedFormat from 'dayjs/plugin/advancedFormat'
 import customParseFormat from 'dayjs/plugin/customParseFormat'
+import duration from 'dayjs/plugin/duration'
 
 dayjs.extend(advancedFormat);
 dayjs.extend(customParseFormat);
+dayjs.extend(duration);
 
 // the calendar part of the menu has links to the pages we are already on
 // so those are unneeded.

cal/src/support/dataPool.js

@@ -9,6 +9,7 @@ const API_BASE_URL = window.location.origin;
 // const API_BASE_URL = "https://api.shift2bikes.org";
 const API_EVENTS_URL = new URL(`/api/events.php`, API_BASE_URL);
 const API_SEARCH_URL = new URL(`/api/search.php`, API_BASE_URL);
+const API_ICS_URL    = new URL('/api/ics.php', API_BASE_URL);
 
 // cache the most recent range.
 // useful for front-end development where browser caching is disable.
@@ -73,7 +74,13 @@ export default {
     const data = await resp.json(); // data => { events: [], pagination: {} }
     mungeEvents(data.events);
     return data;
-  }
+  },
+  // fix: this isn't nice as a method of data pool
+  // make an endpoints file of some sort that dataPool uses.
+  // ( and then have callers of this use that file directly )
+  getExportURL(id) {
+    return buildUrl(API_ICS_URL, {id});
+  },
 }
 
 // change dates into dayjs; and sort.