add ical generator

_includes/program-ical.11ty.js

@@ -0,0 +1,66 @@
+const { ICalCalendar, ICalCalendarMethod } = require('ical-generator')
+
+module.exports = class ProgramIcal {
+  getDate(date, time) {
+    const d = new Date(date);
+    const [ hours, mins ] = time.split(":");
+    d.setHours(hours);
+    d.setMinutes(mins);
+    return d
+  }
+
+  getLocalized(item, lang) {
+    if (typeof item === "string") return item;
+    return item[lang];
+  }
+
+  data() {
+    return {
+      permalink: data => `/${data.lang}/program.ics`
+    }
+  }
+
+  render({ ese, program, lang }) {
+    const url = `https://ese.ifsr.de/${ese.year}`;
+
+    const cal = new ICalCalendar({
+      name: `ESE ${ese.year}`,
+      url,
+      method: ICalCalendarMethod.PUBLISH,
+    });
+
+    for (const [date, events] of Object.entries(program)) {
+      for (const [i, event] of events.entries()) {
+        // nunjucks loops are 1-indexed by default
+        const id = `${date}_${i+1}`;
+
+        let description = this.getLocalized(event.description, lang);
+
+        if ("annotation" in event && event.annotation !== null) {
+          description += "\n\n";
+            + (lang == "en" ? "Notice: " : "Hinweis: ")
+            + this.getLocalized(event.annotation, lang);
+        }
+
+        if ("location" in event && event.location !== null) {
+          description += "\n\n"
+            + (lang == "en" ? "Location: " : "Veranstaltungsort: ")
+            + this.getLocalized(event.location, lang);
+        }
+
+        cal.createEvent({
+          id,
+          start: this.getDate(date, event.start),
+          end: ("end" in event && event.end !== null)
+            ? this.getDate(date, event.end)
+            : this.getDate(date, "23:59"),
+          summary: this.getLocalized(event.title, lang),
+          description,
+          url: `${url}/${lang}/program/#${id}`,
+        });
+      }
+    }
+
+    return cal.toString()
+  }
+}

content/de/program.ical.njk

@@ -0,0 +1,3 @@
+---
+layout: program-ical.11ty.js
+---

content/de/program.md

@@ -10,3 +10,5 @@ eleventyNavigation:
 Die ESE startet dieses Jahr am Montag, den {{ese.startDay}}. Oktober {{ese.year}}. Los geht es mit der Begrüßungsveranstaltung. Am Sonntag wird vorab schon eine Radtour angeboten.
 
 Einige Veranstaltungen übertragen wir auch Live in unserem ESE-Stream, gekennzeichnet mit diesem Symbol: {% icon "solid:video", title="Livestream" %}
+
+Der Wochenplan ist auch für deine Kalender-App verfügbar. Öffne oder kopiere dazu diesen Link: [ESE-Kalender](/de/program.ics)

content/en/program.ical.njk

@@ -0,0 +1,3 @@
+---
+layout: program-ical.11ty.js
+---

content/en/program.md

@@ -10,3 +10,5 @@ eleventyNavigation:
 The ESE starts this year on Monday, October {{ese.startDay}}, {{ese.year}} with the opening event. There is also a bicycle tour planned on Sunday.
 
 Some events will also be broadcast live in our ESE stream, marked with this symbol: {% icon "solid:video", title="Livestream" %}
+
+The schedule is also available for your calendar app. Open or copy this link: [ESE Calender](/en/program.ics)

package-lock.json

@@ -16,6 +16,7 @@
         "@fortawesome/fontawesome-free": "^6.6.0",
         "eleventy-plugin-gen-favicons": "^1.1.3",
         "eleventy-plugin-icons": "^4.5.1",
+        "ical-generator": "^8.0.0",
         "js-yaml": "^4.1.0",
         "markdown-it": "^14.1.0",
         "svg-text-to-path": "^2.0.3"
@@ -2351,6 +2352,58 @@
         "node": ">= 6"
       }
     },
+    "node_modules/ical-generator": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/ical-generator/-/ical-generator-8.0.0.tgz",
+      "integrity": "sha512-CvVKK3JJrKop6z7i7/NS69FjYdR6ux1LswIeiZ3yaicX7ocMFLQI475JhQabCT7koUkaCVFNVxLaYaxtdPgwww==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "uuid-random": "^1.3.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22.0.0"
+      },
+      "peerDependencies": {
+        "@touch4it/ical-timezones": ">=1.6.0",
+        "@types/luxon": ">= 1.26.0",
+        "@types/mocha": ">= 8.2.1",
+        "dayjs": ">= 1.10.0",
+        "luxon": ">= 1.26.0",
+        "moment": ">= 2.29.0",
+        "moment-timezone": ">= 0.5.33",
+        "rrule": ">= 2.6.8"
+      },
+      "peerDependenciesMeta": {
+        "@touch4it/ical-timezones": {
+          "optional": true
+        },
+        "@types/luxon": {
+          "optional": true
+        },
+        "@types/mocha": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "dayjs": {
+          "optional": true
+        },
+        "luxon": {
+          "optional": true
+        },
+        "moment": {
+          "optional": true
+        },
+        "moment-timezone": {
+          "optional": true
+        },
+        "rrule": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/iconv-lite": {
       "version": "0.6.3",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
@@ -4224,6 +4277,13 @@
         "requires-port": "^1.0.0"
       }
     },
+    "node_modules/uuid-random": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/uuid-random/-/uuid-random-1.3.2.tgz",
+      "integrity": "sha512-UOzej0Le/UgkbWEO8flm+0y+G+ljUon1QWTEZOq1rnMAsxo2+SckbiZdKzAHHlVh6gJqI1TjC/xwgR50MuCrBQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/void-elements": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/void-elements/-/void-elements-3.1.0.tgz",

package.json

@@ -19,6 +19,7 @@
     "@fortawesome/fontawesome-free": "^6.6.0",
     "eleventy-plugin-gen-favicons": "^1.1.3",
     "eleventy-plugin-icons": "^4.5.1",
+    "ical-generator": "^8.0.0",
     "js-yaml": "^4.1.0",
     "markdown-it": "^14.1.0",
     "svg-text-to-path": "^2.0.3"