nix-system/home/lf.nix

{ config, pkgs, ... }:
{
  programs.lf = {
    enable = true;
    commands = {
      trash = ''''${{
      set -f
      ${pkgs.trash-cli}/bin/trash $fx
      }}'';
      extract = ''''${{
      set -f
      ${pkgs.dtrx}/bin/dtrx -n $fx
      }}'';
      compress_gzip = ''''${{
      set -f
      ${pkgs.gnutar}/bin/tar Oc $(realpath --relative-to $PWD $f) | \
      ${pkgs.pigz}/bin/pigz -cv - > $f.tar.gz
      }}'';
      compress_zip = ''''${{
      set -f
      ${pkgs.zip}/bin/zip -r $f.zip $(realpath --relative-to $PWD $f)
      }}'';
      compress_xz = ''''${{
      set -f
      ${pkgs.gnutar}/bin/tar Oc $(realpath --relative-to $PWD $f) | \
      ${pkgs.pxz}/bin/pxz -cv - > $f.tar.xz
      }}'';
      compress_bzip2 = ''''${{
      set -f
      ${pkgs.gnutar}/bin/tar Oc $(realpath --relative-to $PWD $f) | \
      ${pkgs.pbzip2}/bin/pbzip2 -cv - > $f.tar.bz2
      }}'';
      compress_zstd = ''''${{
      set -f
      ${pkgs.gnutar}/bin/tar --zstd -cvf $f.tar.zst $(realpath --relative-to $PWD $f)
      }}'';
      compress_just_tar = ''''${{
      set -f
      ${pkgs.gnutar}/bin/tar -cvf $f.tar $(realpath --relative-to $PWD $f)
      }}'';
      show_size = ''%{{
      set -f
      ${pkgs.coreutils}/bin/du -sh $f
      }}'';
      ncdu = ''''${{
      set -f
      ${pkgs.ncdu}/bin/ncdu $f
      }}'';
      # find = ''''${{
      #   set -f
      #   read -p 
      toggle_preview = ''%{{
      if [ "$lf_preview" = "true" ]; then
        lf -remote "send $id :set preview false; set ratios 1:5"
      else
        lf -remote "send $id :set preview true; set ratios 1:2:3"
      fi
      }}
      '';
      paste = ''&{{
      set -- $(cat ~/.local/share/lf/files)
      mode="$1"
      shift
      case "$mode" in
        copy)
          rsync -ah --ignore-existing --info=progress2 --no-inc-recursive -- "$@" . |
          stdbuf -i0 -o0 -e0 tr '\r' '\n' |
          while IFS= read -r line; do
              lf -remote "send $id echo $line"
          done
          ;;
        move) mv -n -- "$@" .;;
      esac
      rm ~/.local/share/lf/files
      lf -remote "send clear"
      }}'';
      bulk-rename = ''''${{
      old="$(mktemp)"
      new="$(mktemp)"
      if [ -n "$fs" ]; then
        fs="$(basename -a $fs)"
      else
        fs="$(ls -a)"
      fi
      printf '%s\n' "$fs" >"$old"
      printf '%s\n' "$fs" >"$new"
      $EDITOR "$new"
      [ "$(wc -l < "$new")" -ne "$(wc -l < "$old")" ] && exit
      paste "$old" "$new" | while IFS= read -r names; do
        src="$(printf '%s' "$names" | cut -f1)"
        dst="$(printf '%s' "$names" | cut -f2)"
        if [ "$src" = "$dst" ] || [ -e "$dst" ]; then
            continue
        fi
        mv -- "$src" "$dst"
      done
      rm -- "$old" "$new"
      lf -remote "send $id unselect"
      }}'';
      alt-paste = ''&{{
      if [ -n "$fs" ]; then
        lf -remote "send $id $1; save-select"
      fi
      lf -remote "send $id paste"
      }}'';

      load-select = ''&{{
      # skip if triggered via save-select from itself
      if [ "$1" = "$id" ]; then
          exit 0
      fi

      lf -remote "send $id unselect"
      if [ -s ~/.local/share/lf/select ]; then
          files=$(tr '\n' '\0' < ~/.local/share/lf/select | xargs -0 printf ' %q')
          lf -remote "send $id toggle $files"
      fi
      }}'';

      save-select = ''&{{
      printf "%s" "$fs" > ~/.local/share/lf/select
      lf -remote "send load-select $id"
      }}'';

      follow_link = ''%{{
      lf -remote "send ''${id} select '$(readlink $f)'"
      }}'';
      open_folder_in_sxiv = ''%{{
      nsxiv .
      }}'';

    };
    keybindings = {
      D = "trash";
      x = "extract";
      Xg = "compress_gzip";
      Xz = "compress_zip";
      Xx = "compress_xz";
      Xb = "compress_bzip2";
      Xs = "compress_zstd";
      Xt = "compress_just_tar";
      as = "show_size";
      an = "ncdu";
      ar = "bulk-rename";
      af = "follow_link";
      ai = "open_folder_in_sxiv";
      E = "$nvim";
      p = "alt-paste copy";
      P = "alt-paste cut";
      "<space>" = ":toggle; down; save-select";
      u = ":unselect; save-select";
      v = ":invert; save-select";
      "<tab>" = "toggle_preview";
    };

    # previewer.source = "${pkgs.pistol}/bin/pistol";
    previewer.source = pkgs.writers.writeBash "pistol" ''
      file=$1
      w=$2
      h=$3
      x=$4
      y=$5

      if [[ "$( ${pkgs.file}/bin/file -Lb --mime-type "$file")" =~ ^image ]]; then
          kitty +kitten icat --silent --stdin no --transfer-mode file --place \
          "''${w}x''${h}@''${x}x''${y}" "$file" < /dev/null > /dev/tty
          exit 1
      fi

      ${pkgs.pistol}/bin/pistol "$file"
    '';

    settings = {
      icons = true;
      ifs = "\\n";
      cleaner =
        let
          cleaner = pkgs.writers.writeBash "cleaner" ''
            kitty +kitten icat --clear --stdin no --silent --transfer-mode file < /dev/null > /dev/tty
          '';
        in
        "${cleaner}";
    };

    extraConfig = ''
      load-select
      setlocal ${config.xdg.userDirs.download} sortby time
      setlocal ${config.xdg.userDirs.download} reverse
      setlocal ${config.xdg.userDirs.download} set info size:time
    '';
  };
}