l 5: add mpv-poll

lass/5pkgs/default.nix

@@ -8,6 +8,7 @@
       ublock = pkgs.callPackage ./firefoxPlugins/ublock.nix {};
       vimperator = pkgs.callPackage ./firefoxPlugins/vimperator.nix {};
     };
+    mpv-poll = pkgs.callPackage ./mpv-poll/default.nix {};
     xmonad-lass =
       let src = pkgs.writeNixFromCabal "xmonad-lass.nix" ./xmonad-lass; in
       pkgs.haskellPackages.callPackage src {};

lass/5pkgs/mpv-poll/default.nix

@@ -0,0 +1,40 @@
+{ pkgs, ... }:
+
+pkgs.writeScriptBin "mpv-poll" ''
+  #! ${pkgs.bash}/bin/bash
+
+  pl=$1
+  hist=''${HISTORY:-"./mpv_history"}
+  mpv_options=''${MPV_OPTIONS:-""}
+
+  lastYT=""
+
+  play_video () {
+    toPlay=$1
+    echo $toPlay >> $hist
+    mpv $mpv_options $toPlay
+  }
+
+  if ! [ -e $hist ]; then
+    touch $hist
+  fi
+
+  while :
+  do
+    if [ -s $pl ]; then
+      toPlay=$(head -1 $pl)
+      sed -i '1d' $pl
+      if $(echo $toPlay | grep -Eq 'https?://(www.)?youtube.com/watch'); then
+        lastYT=$toPlay
+      fi
+      play_video $toPlay
+    else
+      if [ -n "$lastYT" ]; then
+        next=$(yt-next $lastYT)
+        lastYT=$next
+        play_video $next
+      fi
+      sleep 1
+    fi
+  done
+''