Add ICS calendar generator (#16)

* Add generating ICS calendar

* Fix timezone

* Replace dependency that cant handle timezones with custom generator

* Replace let with const

.eleventy.js

@@ -1,6 +1,23 @@
-const { DateTime } = require("luxon");
+const {DateTime} = require("luxon");
+const ics = require("./plugins/ics");
+const fs = require("fs");
+
+const DEFAULT_START_TIME = {
+    hours: 18,
+    minutes: 15
+}
+
+const EVENT_COMMON = {
+    description: `Spotkanie koła KNCyber
+
+Bieżące informacje i szczegóły na serwerze Discord koła lub stronie na Facebooku
+https://www.facebook.com/KoloCyber
+https://discord.com/invite/DjVypPcV8c`,
+    location: 'Wydział Elektroniki i Technik Informacyjnych Politechniki Warszawskiej'
+}
 
 let headers = [];
+let calendarEvents = [];
 
 module.exports = function (eleventyConfig) {
     eleventyConfig.addPassthroughCopy({"static": "/"});
@@ -10,11 +27,11 @@ module.exports = function (eleventyConfig) {
         headers = [];
     });
 
-    eleventyConfig.addShortcode("event", function (date, description) {
+    eleventyConfig.addShortcode("event", function (date, description, extra = null) {
         const currentDate = DateTime.local().setZone("Europe/Warsaw");
         const parsedDate = DateTime.fromFormat(date, "yyyy-MM-dd", {
             zone: 'Europe/Warsaw'
-        });
+        }).set(DEFAULT_START_TIME);
 
         const isWinter = parsedDate.month >= 10 || parsedDate.month < 2;
         const isFuture = currentDate < parsedDate;
@@ -30,7 +47,23 @@ module.exports = function (eleventyConfig) {
             headers.push(header);
         }
 
+        // Create ICS calendar event
+        calendarEvents.push({
+            title: description,
+            start: parsedDate,
+            end: parsedDate.plus({hours: 2}),
+            ...EVENT_COMMON
+        });
+
         const dateString = parsedDate.toFormat("dd/MM/yyyy");
-        return result + `- ${dateString} - ${description}`
-    })
+        return result + `- ${dateString} - ${description}` + (extra != null ? ` - ${extra}` : '')
+    });
+
+    eleventyConfig.on('eleventy.after', async ({dir}) => {
+        const icsContent = ics.generateICS(calendarEvents);
+
+        const writeStream = fs.createWriteStream(`./${dir.output}/calendar.ics`);
+        writeStream.write(icsContent);
+        writeStream.end();
+    });
 };

index.md

@@ -6,6 +6,7 @@ layout: "layouts/post.njk"
 - Thursdays 18:15 - everything else
 - [Discord link](https://discord.gg/DjVypPcV8c)
 - [Facebook page](https://www.facebook.com/KoloCyber)
+- [ICS Calendar](/calendar.ics) (Subscribe URL in your calendar)
 
 {% event "2023-11-30" "Wstęp do exploitacji binarnej part 1" %}
 {% event "2023-11-16" "Przejmujemy system monitoringu" %}
@@ -25,14 +26,14 @@ layout: "layouts/post.njk"
 {% event "2023-01-05" "Intro to Docker" %}
 {% event "2022-12-08" "Intro to Vim" %}
 {% event "2022-11-17" "Practical web hacking with burp and nmap" %}
-{% event "2022-10-10" "Intro to Linux - [(terminal)](https://docs.google.com/presentation/d/1lUJG3ZeYpzkbV2AIr3Tb9Pf5dpYz7MOxmmbHANYckP4/edit?usp=sharing)" %}
-{% event "2022-10-03" "Intro to Linux - [(ssh)](https://docs.google.com/presentation/d/17pdNQ7bMUJpsCE73hYcIy1UXxaqCriwTTp2xZXhgFR8/edit?usp=sharing)" %}
-{% event "2022-06-07" "Cloud Security Academy: Reference Security Architecture in Google Cloud [(ISSA Polska feat. KNCyber)](https://www.elka.pw.edu.pl/Aktualnosci/Seminaria-wyklady-warsztaty/Cloud-Security)" %}
+{% event "2022-10-10" "Intro to Linux" "[(terminal)](https://docs.google.com/presentation/d/1lUJG3ZeYpzkbV2AIr3Tb9Pf5dpYz7MOxmmbHANYckP4/edit?usp=sharing)" %}
+{% event "2022-10-03" "Intro to Linux" "[(ssh)](https://docs.google.com/presentation/d/17pdNQ7bMUJpsCE73hYcIy1UXxaqCriwTTp2xZXhgFR8/edit?usp=sharing)" %}
+{% event "2022-06-07" "Cloud Security Academy: Reference Security Architecture in Google Cloud" "[(ISSA Polska feat. KNCyber)](https://www.elka.pw.edu.pl/Aktualnosci/Seminaria-wyklady-warsztaty/Cloud-Security)" %}
 {% event "2022-05-26" "Warsztat: Bezpieczne hostowanie aplikacji na dockerze" %}
 {% event "2022-05-12" "IRL hacking with hardware 2" %}
 {% event "2022-04-28" "IRL hacking with hardware" %}
 {% event "2022-01-13" "Automating clusters of servers with ansible" %}
-{% event "2021-12-21" "Christmas hacking CTF + presentation form [billtech](https://billtech.pl)" %}
+{% event "2021-12-21" "Christmas hacking CTF + presentation form" "[billtech](https://billtech.pl)" %}
 {% event "2021-12-16" "Having fun with Log4J - how to hack the internet" %}
 {% event "2021-11-18" "AW CTF writeups" %}
 {% event "2021-11-04" "Introduction to Science Club" %}
@@ -42,13 +43,13 @@ layout: "layouts/post.njk"
 {% event "2021-04-26" "Web Exploitation (SQL injections) - workshop 3" %}
 {% event "2021-04-20" "Docker - introduction to containerization" %}
 {% event "2021-04-12" "Basic use of Python for request automation" %}
-{% event "2021-04-06" "A few things about dynamic binary instrumentation - by [Redford](https://twitter.com/dsredford)" %}
+{% event "2021-04-06" "A few things about dynamic binary instrumentation" "by [Redford](https://twitter.com/dsredford)" %}
 {% event "2021-04-05" "Web Exploitation (SQL injections) - workshop 2" %}
-{% event "2021-03-30" "How to decrypt ransomware, or die trying - by [msm](https://twitter.com/MsmCode)" %}
+{% event "2021-03-30" "How to decrypt ransomware, or die trying" "by [msm](https://twitter.com/MsmCode)" %}
 {% event "2021-03-29" "Web Exploitation (SQL injections) - workshop 1" %}
 {% event "2021-03-23" "Introduction to Web Exploitation" %}
 {% event "2021-03-09" "Introduction to Science Club" %}
-{% event "2020-12-17" "Jak mogłem sterować polskim przemysłem? - by [dudekmar](https://twitter.com/dudekmar)" %}
+{% event "2020-12-17" "Jak mogłem sterować polskim przemysłem?" "by [dudekmar](https://twitter.com/dudekmar)" %}
 {% event "2020-12-14" "Web Exploitation - workshop 1" %}
 {% event "2020-11-30" "Binary Exploitation - workshop 3" %}
 {% event "2020-11-26" "Summary of project ideas" %}