From 393d7f4fc4cb5183f1303e746c007dbcd6ee377b Mon Sep 17 00:00:00 2001
From: "Lennart J. Kurzweg (Nx2)" <git@nx2.site>
Date: Sat, 31 May 2025 13:35:52 +0200
Subject: [PATCH] campuszeit

---
 home-modules/calendar-campuszeit-fix.nix | 58 ++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 home-modules/calendar-campuszeit-fix.nix

diff --git a/home-modules/calendar-campuszeit-fix.nix b/home-modules/calendar-campuszeit-fix.nix
new file mode 100644
index 0000000..d15769f
--- /dev/null
+++ b/home-modules/calendar-campuszeit-fix.nix
@@ -0,0 +1,58 @@
+{ pkgs, user, ... }:
+{
+  home.packages = let
+    u = pkgs.writers.writePython3Bin "nx_fix_campuszeit_python" {
+        flakeIgnore = [ "E302" "E305" "E226" "E501" ];
+      } /* python */ ''
+import os
+import sys
+
+def replace_campus_timezone(directory):
+    if not os.path.isdir(directory):
+        print(f"Error: {directory} is not a valid directory.")
+        return
+
+    for filename in os.listdir(directory):
+        filepath = os.path.join(directory, filename)
+        if not os.path.isfile(filepath):
+            continue
+
+        with open(filepath, 'r', encoding='utf-8') as f:
+            content = f.read()
+
+        if 'TZID:Europe/Berlin' in content or 'TZID="Europe/Berlin"' in content:
+            # Remove VTIMEZONE block for CampusNetZeit (optional depending on needs)
+            # Use a regex if multiple VTIMEZONE blocks may exist
+            start_idx = content.find('BEGIN:VTIMEZONE')
+            end_idx = content.find('END:VTIMEZONE', start_idx)
+            if start_idx != -1 and end_idx != -1:
+                content = content[:start_idx] + content[end_idx + len('END:VTIMEZONE\n'):]
+
+            # Replace all TZID references
+            content = content.replace('TZID:Europe/Berlin', 'TZID:Europe/Berlin')
+            content = content.replace('TZID="Europe/Berlin"', 'TZID="Europe/Berlin"')
+
+            with open(filepath, 'w', encoding='utf-8') as f:
+                f.write(content)
+
+            print(f"Updated time zone in: {filename}")
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print("Usage: python replace_timezone.py <directory>")
+    else:
+        replace_campus_timezone(sys.argv[1])
+'';
+  in [
+    (pkgs.writeShellApplication {
+      name = "nx_fix_campuszeit";
+      text = /*bash*/ ''
+        echo CHANGING OWNERSHIP OF "$(realpath "$1")" RECURSIVELY
+        read -r -p "Continue?"
+        sudo chown -R ${user} "$1" 
+        ${u}/bin/nx_fix_campuszeit_python "$1"
+        sudo chown -R radicale "$1"
+      '';
+    })
+  ];
+}