feat: LB

configs/default.nix

@@ -217,6 +217,7 @@ in {
     ./i3.nix
     ./keybase.nix
     ./keyboard.nix
+    ./lb.nix
     ./mail/client.nix
     ./mpv.nix
     ./mime.nix

configs/lb.nix

@@ -0,0 +1,27 @@
+{ lib, pkgs, ... }:
+let
+  nixpkgs-unstable = import <nixpkgs-unstable> {};
+in
+{
+  systemd.services.lb-subscription = {
+    enable = true;
+    wants = [ "network-online.target" ];
+    startAt = "weekly";
+    serviceConfig = {
+      user = "kfm";
+      WorkingDirectory = "/home/kfm/cloud/Seafile/Books/Germanistik/LB";
+    };
+    script = ''
+      first_year=2019
+      for year in $(${pkgs.coreutils}/bin/seq "$first_year" "$(date +%Y)"); do
+        ${pkgs.curl}/bin/curl -sSL "https://www.literarische-blaetter.de/jahrgang-$year/" \
+          | ${nixpkgs-unstable.htmlq}/bin/htmlq --attribute href 'ul.slides a' \
+          | while read -r month; do
+            ${pkgs.curl}/bin/curl -sSL "$month" \
+              | ${nixpkgs-unstable.htmlq}/bin/htmlq --attribute src iframe \
+              | ${pkgs.gnused}/bin/sed 's/.*?pdf=//;s/?wp-hosted.*//'
+          done
+      done | ${pkgs.findutils}/bin/xargs ${pkgs.wget}/bin/wget --no-clobber
+    '';
+  };
+}