From a625635ee1e65b19fbc41d603c1c66d5caebc7e8 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Mon, 6 Sep 2021 01:26:50 +0200
Subject: [PATCH] kreuzchor-termine: init

---
 default.nix                 |  1 +
 kreuzchor-termine/scrape.rb | 57 +++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 kreuzchor-termine/scrape.rb

diff --git a/default.nix b/default.nix
index 47295d7..8dba3c0 100644
--- a/default.nix
+++ b/default.nix
@@ -31,4 +31,5 @@ in {
   freifunk_node = wrapScript "freifunk_node" ./freifunk_node/scrape.rb;
   impfee = wrapScript "impfee" ./impfee/scrape.rb;
   riesa-efau-kalender = wrapScript "riesa-efau-kalender" ./riesa-efau-kalender/scrape.rb;
+  kreuzchor-termine = wrapScript "kreuzchor-termine" ./kreuzchor-termine/scrape.rb;
 }
diff --git a/kreuzchor-termine/scrape.rb b/kreuzchor-termine/scrape.rb
new file mode 100644
index 0000000..c5b1c62
--- /dev/null
+++ b/kreuzchor-termine/scrape.rb
@@ -0,0 +1,57 @@
+#!/usr/bin/env ruby
+# coding: utf-8
+
+require 'open-uri'
+require 'json'
+require 'erb'
+
+def fmt_time t
+  t.strftime "%Y%m%dT%H%M%S"
+end
+
+class Event
+  attr_accessor :name, :location, :link, :date
+end
+
+events = []
+
+url = "https://kreuzchor.de/termine-tickets/"
+data = URI.open(url).read()
+if data =~ /var php_vars = (\{.+\});$/
+  json = JSON.parse $1
+else
+  raise "Data not found"
+end
+
+json['events'].each do |event|
+  ev = Event::new
+  ev.name = event['title']
+  ev.location = event['venue']
+  ev.date = Time.at(event['event_time'] / 1000, in: 0)
+  ev.link = event['permalink'].empty? ? event['event_link'] : event['permalink']
+  events << ev
+end
+
+events.sort_by! { |ev| ev.date }
+
+ical = ERB::new <<~EOF
+  BEGIN:VCALENDAR
+  VERSION:2.0
+  METHOD:PUBLISH
+  X-WR-TIMEZONE;VALUE=TEXT:Europe/Berlin
+  <% events.each do |ev| %>
+  BEGIN:VEVENT
+  METHOD:PUBLISH
+  CLASS:PUBLIC
+  UID:<%= ev.link %>
+  DTSTART:<%= fmt_time(ev.date) %>
+  DTEND:<%= fmt_time(ev.date + 2 * 3600) %>
+  SUMMARY:<%= ev.name %>
+  LOCATION:<%= ev.location %>
+  URL:<%= ev.link %>
+  END:VEVENT
+  <% end %>
+  END:VCALENDAR
+EOF
+
+puts ical.result