From 54351c29b33576a895e12f5451b76dcb48ea0395 Mon Sep 17 00:00:00 2001
From: Tobias <tobrohl@gmail.com>
Date: Thu, 21 Aug 2025 18:05:31 +0200
Subject: [PATCH 1/4] allow specifying request headers

---
 lib/ical_filter_proxy/calendar.rb         | 7 ++++---
 lib/ical_filter_proxy/calendar_builder.rb | 3 ++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/ical_filter_proxy/calendar.rb b/lib/ical_filter_proxy/calendar.rb
index 1cba542..c4179a4 100644
--- a/lib/ical_filter_proxy/calendar.rb
+++ b/lib/ical_filter_proxy/calendar.rb
@@ -1,11 +1,12 @@
 module IcalFilterProxy
   class Calendar
-    attr_accessor :ical_url, :api_key, :timezone, :filter_rules, :clear_existing_alarms, :alarm_triggers
+    attr_accessor :ical_url, :api_key, :timezone, :filter_rules, :clear_existing_alarms, :alarm_triggers, :request_headers
 
-    def initialize(ical_url, api_key, timezone = 'UTC')
+    def initialize(ical_url, api_key, timezone = 'UTC', request_headers={})
       self.ical_url = ical_url
       self.api_key = api_key
       self.timezone = timezone
+      self.request_headers=request_headers
 
       self.filter_rules = []
       self.clear_existing_alarms = false
@@ -58,7 +59,7 @@ def original_ics
     end
 
     def raw_original_ical
-      URI.open(ical_url).read
+      URI.open(ical_url, headers_array&.reduce({}, :merge) || {}).read
     end
   end
 end
diff --git a/lib/ical_filter_proxy/calendar_builder.rb b/lib/ical_filter_proxy/calendar_builder.rb
index 8d17260..da06054 100644
--- a/lib/ical_filter_proxy/calendar_builder.rb
+++ b/lib/ical_filter_proxy/calendar_builder.rb
@@ -20,7 +20,8 @@ def build
     def create_calendar
       @calendar = Calendar.new(calendar_config["ical_url"],
                                calendar_config["api_key"],
-                               calendar_config["timezone"])
+                               calendar_config["timezone"],
+                               calendar_config["request_headers"])
     end
 
     def add_rules

From 968a5013cdbdf2b85218385367a6fde3961ed62d Mon Sep 17 00:00:00 2001
From: Tobias <tobrohl@gmail.com>
Date: Thu, 21 Aug 2025 18:12:04 +0200
Subject: [PATCH 2/4] add documentation

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 08da6ae..e82b5a9 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,8 @@ In addition, display alarms can be created or cleared.
 ```yaml
 my_calendar_name:
    ical_url: https://source-calendar.com/my_calendar.ics # Source calendar
+   request_headers: # (optional) add headers send when requesting the ical url 
+     - User-Agent: 'Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0'
    api_key: myapikey # (optional) append ?key=myapikey to your URL to grant access
    timezone: Europe/London # (optional) ensure all time comparisons are done in this TZ
    rules:

From 8489d7179f63d08f298ee4fb1038965370f94e15 Mon Sep 17 00:00:00 2001
From: Tobias <tobrohl@gmail.com>
Date: Thu, 21 Aug 2025 18:31:10 +0200
Subject: [PATCH 3/4] forgot to rename the variable in one location

---
 lib/ical_filter_proxy/calendar.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ical_filter_proxy/calendar.rb b/lib/ical_filter_proxy/calendar.rb
index c4179a4..69e899a 100644
--- a/lib/ical_filter_proxy/calendar.rb
+++ b/lib/ical_filter_proxy/calendar.rb
@@ -59,7 +59,7 @@ def original_ics
     end
 
     def raw_original_ical
-      URI.open(ical_url, headers_array&.reduce({}, :merge) || {}).read
+      URI.open(ical_url, request_headers&.reduce({}, :merge) || {}).read
     end
   end
 end

From 834a2c952ede14fe728e7a147d8b8cf9b1831ba6 Mon Sep 17 00:00:00 2001
From: Tobias <tobrohl@gmail.com>
Date: Mon, 29 Dec 2025 21:49:32 +0100
Subject: [PATCH 4/4] implement codestyle suggestions from darkphnx

---
 lib/ical_filter_proxy/calendar.rb | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/ical_filter_proxy/calendar.rb b/lib/ical_filter_proxy/calendar.rb
index 69e899a..f9f4619 100644
--- a/lib/ical_filter_proxy/calendar.rb
+++ b/lib/ical_filter_proxy/calendar.rb
@@ -2,11 +2,11 @@ module IcalFilterProxy
   class Calendar
     attr_accessor :ical_url, :api_key, :timezone, :filter_rules, :clear_existing_alarms, :alarm_triggers, :request_headers
 
-    def initialize(ical_url, api_key, timezone = 'UTC', request_headers={})
+    def initialize(ical_url, api_key, timezone = 'UTC', request_headers = {})
       self.ical_url = ical_url
       self.api_key = api_key
       self.timezone = timezone
-      self.request_headers=request_headers
+      self.request_headers = request_headers
 
       self.filter_rules = []
       self.clear_existing_alarms = false
@@ -59,7 +59,7 @@ def original_ics
     end
 
     def raw_original_ical
-      URI.open(ical_url, request_headers&.reduce({}, :merge) || {}).read
+      URI.open(ical_url, request_headers || {}).read
     end
   end
 end