From 3e5bf5797652aa244a224f840f6850297343d137 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Fri, 15 Jul 2022 01:37:10 +0200
Subject: [PATCH] staatsoperette: init

---
 default.nix              |  1 +
 staatsoperette/scrape.rb | 59 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 staatsoperette/scrape.rb

diff --git a/default.nix b/default.nix
index 9480a6d..92d6d45 100644
--- a/default.nix
+++ b/default.nix
@@ -41,4 +41,5 @@ in {
   kunsthaus = wrapScript "kunsthaus" ./kunsthaus/scrape.rb;
   hfmdd = wrapScript "hfmdd" ./hfmdd/scrape.rb;
   hfbk-dresden = wrapScript "hfbk-dresden" ./hfbk-dresden/scrape.rb;
+  staatsoperette = wrapScript "staatsoperette" ./staatsoperette/scrape.rb;
 }
diff --git a/staatsoperette/scrape.rb b/staatsoperette/scrape.rb
new file mode 100644
index 0000000..eb3b11f
--- /dev/null
+++ b/staatsoperette/scrape.rb
@@ -0,0 +1,59 @@
+#!/usr/bin/env ruby
+# coding: utf-8
+
+require 'open-uri'
+require 'json'
+require 'nokogiri'
+require 'erb'
+
+events = []
+
+url = "https://www.staatsoperette.de/spielplan/"
+STDERR.puts "GET #{url}"
+doc = Nokogiri::HTML URI.open(url)
+
+doc.css(".performance").each do |content|
+  event_link = URI::join url, content.css("h2 a").attr("href")
+  ical_link = URI.join url, content.css("a[href$='.ics']").attr('href')
+
+  event_line = false
+  has_url = false
+  STDERR.puts "GET #{ical_link}"
+  ical = URI.open(ical_link).read
+  events.push ical.lines.collect { |line|
+    case line.chomp
+    when "BEGIN:VEVENT"
+      event_line = true
+      line
+    when "END:VEVENT"
+      event_line = false
+      if has_url
+        line
+      else
+        ["URL:#{event_link}\n", line]
+      end
+    when /URL:/
+      if event_line
+        has_url = true
+        line
+      else
+        []
+      end
+    else
+      event_line ? line : []
+    end
+  }.flatten.join
+end
+
+ical = ERB::new <<~EOF
+  BEGIN:VCALENDAR
+  VERSION:2.0
+  METHOD:PUBLISH
+  X-WR-TIMEZONE;VALUE=TEXT:Europe/Berlin
+
+  <%= events.join "\n" %>
+
+  END:VCALENDAR
+EOF
+
+puts ical.result