webdav to ical export

hosts/www/dav2ical.nix

@@ -0,0 +1,37 @@
+{ config, pkgs, ... }:
+
+let
+  outputDir = "/srv/http/ical";
+  script = pkgs.writeScript "caldav-export.py" ''
+    #!${pkgs.python3}/bin/python3
+
+    ${builtins.readFile ./caldav-export.py}
+  '';
+  pythonEnv = pkgs.python3.withPackages (ps: with ps; [
+    caldav
+    icalendar
+    pyyaml
+  ]);
+in
+{
+  systemd = {
+    services.caldav-export = {
+      description = "Export CalDAV calendars to ICS";
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${pythonEnv}/bin/python ${script} ${config.age.secrets.caldav-export-config.path} -o ${outputDir}";
+      };
+    };
+    timers.caldav-export = {
+      description = "Daily CalDAV export";
+      wantedBy = [
+        "timers.target"
+      ];
+      timerConfig = {
+        OnCalendar = "daily";
+        Persistent = true;
+      };
+    };
+  };
+}
+

hosts/www/default.nix

@@ -7,6 +7,7 @@
     ./openssh.nix
     ../../services/prometheus-node.nix
     ./nginx.nix
+    ./dav2ical.nix
   ];
 
   networking = {