{ pkgs, lib, ... }:
with lib;
{
  programs.bash = {
    enable = mkDefault true;
    enableCompletion = mkDefault true;
    shellAliases = {
      afk = "xset s activate dpms force off";
      black-on-white = "echo -e '\\033]11;black\\007\\033]10;white\\007'";
      c = "bat";
      cl = "clear";
      dust = "dust --bars-on-right --full-paths";
      emacs = "emacsclient --create-frame";
      grep = "grep --color";
      j = "sudo journalctl -u";
      jb = "sudo journalctl -b";
      ju = "journalctl --user -u";
      l = "ls -alh";
      ll = "ls -al";
      ls = "ls --color=tty";
      md-toc = "grep '^#\\+' --color";
      mem = "ps -e -orss=,user=,args= | sort -b -k1,1n";
      mem-top = "smem --sort rss --autosize";
      mpl = "mplayer";
      n = "sudo networkctl";
      nf = "sudo nft list ruleset | less";
      nix-du-svg = "nix-du | dot -Tsvg >nix-du.svg";
      nixos-clean = "sudo nix-collect-garbage -d";
      nixos-history = "sudo nix-env --list-generations --profile /nix/var/nix/profiles/system";
      nixos-rollback = "sudo nixos-rebuild switch --rollback";
      nt = "sudo networkctl status";
      pass-gen = "tr -d -C A-Za-z0-9_- </dev/urandom | head -c";
      r = "reset";
      rot13 = "tr A-Za-z N-ZA-Mn-za-m";
      rot135 = "tr A-Za-z0-9 N-ZA-Mn-za-m5-90-4";
      rsync = "rsync --no-inc-recursive --info=progress2 --inplace --partial";
      s = "sudo systemctl";
      sr = "sudo systemctl restart";
      ssh-unknown = "ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null";
      st = "sudo systemctl status";
      t = "tmux";
      t0 = "tmux new -t 0";
      t1 = "tmux new -t 1";
      t2 = "tmux new -t 2";
      theme-black-on-white = "echo -e '\\033]10;black\\007\\033]11;white\\007'";
      theme-white-on-black = "echo -e '\\033]10;white\\007\\033]11;black\\007'";
      u = "systemctl --user";
      ur = "systemctl --user restart";
      ut = "systemctl --user status";
      w = "watch --color --differences";
      w1 = "watch --color --differences --interval 1";
      w10 = "watch --color --differences --interval 10";
      w5 = "watch --color --differences --interval 5";
      watch = "watch --color --differences";
      z = "zfs";
      ze = "sudo zpool export";
      zfs-umount = "zfs-unmount";
      zi = "sudo zpool import";
      zl = "zfs list";
      zlb = "zfs list -t bookmarks";
      zls = "zfs list -t snap";
      zm = "zfs-mount";
      zp = "sudo zpool";
      zs = "zpool status";
      zs5 = "w5 zpool status";
      zu = "zfs-unmount";
    };
    historyControl = [ "erasedups" "ignorespace" ];
    historyIgnore = [
      "torify"
      "mpv"
    ];
    historySize = 42000;
    sessionVariables = {
      PS1 = ''\[\033[1;32m\]\[\e]0;\u@\h: \w\a\]\W\[\033[0m\] \$(e=\$?; if [ \$e != 0 ]; then echo '\[\e[0;91m\]'\$e'\[\e[0m\]'; fi)\$ '';
      # More throughput than chacha20-poly1305@openssh.com
      # on hardware with AES acceleration.
      RSYNC_RSH = "ssh -c aes128-gcm@openssh.com,chacha20-poly1305@openssh.com";
    };
    initExtra = ''
      # Alias completion
      . ${pkgs.complete-alias}/bin/complete_alias
      complete -F _complete_alias "''${!BASH_ALIASES[@]}"

      shopt -s globstar
      shopt -s histappend
      shopt -s histreedit
      shopt -s histverify
      # Disable ctrl-s/ctrl-q flow control
      stty -ixon

      ffmpeg-audio () {
        for i in "$@"; do
          ffmpeg -i "$i" -vn -map 0:a -acodec copy "''${i%.*}".audio-only.mkv
        done
      }
      ffmpeg-opus () {
        for i in "$@"; do
          ffmpeg -i "$i" -vn -map 0:a -c:a libopus -b:a 64k -application voip "''${i%.*}".opus
        done
      }
      opusenc-voice () {
        find "$@" -depth -type f -print0 | sort -n -z |
        xargs -0 -P "$(lscpu --online -p | grep -v "#" | wc -l)" -I {} bash -c '
            test -e "''${0%.*}".opus ||
            nice -n 19 ffmpeg -y -i "$0" -map 0:a -b:a 32k -application voip "''${0%.*}".opus
          ' {} \;
      }
      ibm-fan () {
        if [ $# -gt 0 ]
        then sudo tee /proc/acpi/ibm/fan <<<"level $1"
        else grep '^\(level\|speed\):' /proc/acpi/ibm/fan
        fi
        acpi -t
      }
      mkcd () {
        mkdir -p "$1" &&
        cd "$1"
      }
      mkpass () {
        tr -d -C 'A-Za-z0-9' </dev/urandom | head -c 25 | xclip
      }
      smartctl-tbw () {
        device=''${1:-/dev/sda}
        sudo smartctl -A $device |
        { awk '
          $0 ~ /Power_On_Hours/ {
            poh=$10;
            printf "%s / %d hours / %d days / %.2f years\n",  $2, $10, $10 / 24, $10 / 24 / 365.25
          }
          $0 ~ /Total_LBAs_Written/ {
            lbas = $10;
            bytes = $10 * 512;
            mb = bytes / 1024^2;
            gb = bytes / 1024^3;
            tb = bytes / 1024^4;
            printf "%s / %s  / %d mb / %.1f gb / %.3f tb\n", $2, $10, mb, gb, tb
            printf "mean writes per hour / %.2f",  mb/poh
          }
          $0 ~ /Airflow_Temperature_Cel/ { print $2 " / " $10}
          $0 ~ /Wear_Leveling_Count/ { printf "%s / %d (%% health)\n", $2, int($4) }
          $0 ~ /Percentage Used:/ { printf "Percentage_Used / %d\n", int($3) }
        '; echo; } |
        sed -e 's:/:@:' |
        sed -e "s\$^\$$device @ \$" |
        column -ts@
      }
      stress-mem() { fac="$1"; stress-ng --vm 1 --vm-keep --vm-bytes $(awk "/MemAvailable/{ printf \"%d\n\", \$2 * $fac; }" </proc/meminfo)k; }
      sysenter() { srv="$1"; shift; nsenter -a -t "$(systemctl show --property MainPID --value "$srv")" "$@"; }
      systrace() { srv="$1"; shift; strace -f -p "$(systemctl show --property MainPID --value "$srv")" "$@"; }
      swaplist () {
        lastpid=
        swap=0
        sudo grep -H '^Swap:' /proc/*/smaps 2>/dev/null |
        while IFS=: read -r file x size x
        do
          pid=''${file#/proc/}
          pid=''${pid%/smaps}
          size=''${size% kB}
          size=''${size##* }
          if test "$pid" = "$lastpid"
          then swap=$(( swap + size ))
          else
            if test "$swap" -gt 0
            then printf "%u pid=%u cmd=%s\n" "$swap" "$lastpid" "$(tr '\000' ' ' </proc/"$lastpid"/cmdline)"
            fi
            if test "$pid" = self
            then break
            else
              lastpid=$pid
              swap=$size
            fi
          fi
        done |
        sort -nk1,1
      }

      # Recursively mount not-mounted dataset,
      # loading their keys if needed.
      zfs-mount () {
        (
        set -e
        for d in $(zfs list -rH -o name "$@"); do
          mountpoint /mnt/"$d" 2>/dev/null ||
          sudo zfs mount -l "$d"
        done
        )
      }
      # Recursively unmount dataset,
      # unloading their keys.
      zfs-unmount () { sudo zfs unmount -u "$@"; }

      # Create bookmarks for all the snapshots of the given datasets.
      # Bookmarks are only useful on source datasets
      # But syncoid --create-bookmark only creates
      # a bookmark for the latest snapshot,
      # possibly leaving the *_daily or *_monthly snapshots without a bookmark.
      zfs-fix-bookmarks () {
        local d
        local -
        set -x
        for d in "$@"; do
          for s in $(zfs list -Hrpt snapshot -o name "$d"); do
            zfs bookmark "$s" "''${s//@/#}"
          done
        done
      }

      # Restore the inheritance of encryptionroot,
      # usually broken by zfs send --raw.
      # Note that it needs to decrypt the datasets.
      zfs-fix-encryptionroot () {
        local d
        zfs load-key "$1"
        for d in $(zfs list -rHo name "$1" | tail -n +2); do
          echo >&2 "$d"
          test "$(zfs get -Ho value encryptionroot $d)" = "$1" ||
          zfs change-key -li "$d"
      done
      }

      # Recursively remove all the snapshots of given datasets
      zfs-destroy-snapshots () {
        local d
        for d in "$@"; do
          zfs list -t snapshot -rHo name "$d" |
          xargs --no-run-if-empty -L1 zfs destroy
        done
      }
    '';
    profileExtra = ''
    '';
  };
  #programs.broot.enableBashIntegration = true;
  programs.readline = {
    enable = mkDefault true;
    includeSystemConfig = true;
    bindings = {
      # Up/Down
      "\\e[A" = "history-search-backward";
      "\\e[B" = "history-search-forward";
      "\\eOA" = "history-search-backward";
      "\\eOB" = "history-search-forward";

      # Ctrl-Left/Ctrl-Right
      "\\e[1;5C" = "forward-word";
      "\\e[1;5D" = "backward-word";
      "\\e[5C" = "forward-word";
      "\\e[5D" = "backward-word";
      "\\e\\e[C" = "forward-word";
      "\\e\\e[D" = "backward-word";

      # Home/End
      "\\e[1~" = "beginning-of-line";
      "\\e[4~" = "end-of-line";

      # Delete/Insert
      "\\e[3~" = "delete-char";
      "\\e[2~" = "quoted-insert";

      # For non RH/Debian xterm, can't hurt for RH/Debian xterm
      "\\eOF" = "end-of-line";
      "\\eOH" = "beginning-of-line";

      # For freebsd console
      "\\e[F" = "end-of-line";
      "\\e[H" = "beginning-of-line";

      # $if term=rxvt
      "\\e[7~" = "beginning-of-line";
      "\\e[8~" = "end-of-line";
      "\\eOc" = "forward-word";
      "\\eOd" = "backward-word";
      # $endif
    };
    variables = {
      # Be 8 bit clean.
      input-meta = mkDefault true;
      output-meta = mkDefault true;
      colored-completion-prefix = mkDefault true;
      colored-stats = mkDefault true; # Note that this may cause completion text blink in some terminals (e.g. xterm).
      echo-control-characters = mkDefault true;
      mark-symlinked-directories = mkDefault true;
      menu-complete-display-prefix = mkDefault true;
      show-all-if-ambiguous = mkDefault true;
      show-all-if-unmodified = mkDefault true;
      visible-stats = mkDefault false; # Append char to indicate type
      enable-bracketed-paste = mkDefault true;
    };
  };
}