.functions

# merge pdfs using ghostscript
gsmerge () {
  gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=merged.pdf $1 $2
}

# pandoc convert from markdown to pdf
mdtopdf () {
  pandoc -V geometry:margin=1in $1 -o $2
}

# k - kill processes - list only the ones you can kill. Modified the earlier script.
k() {
    local pid
    if [ "$UID" != "0" ]; then
        pid=$(ps -f -u $UID | sed 1d | fzf -m | awk '{print $2}')
    else
        pid=$(ps -ef | sed 1d | fzf -m | awk '{print $2}')
    fi

    if [ "x$pid" != "x" ]
    then
        echo $pid | xargs kill -${1:-9}
    fi
}

# f - cd to selected directory
f() {
  local dir
  dir=$(find ${1:-.} -path '*/\.*' -prune \
                  -o -type d -print 2> /dev/null | fzf +m) &&
  cd "$dir"
}

# Another fd - cd into the selected directory
# This one differs from the above, by only showing the sub directories and not
#  showing the directories within those.
j() {
  DIR=`find * -maxdepth 0 -type d -print 2> /dev/null | fzf-tmux` \
    && cd "$DIR"
}

# l - cd to selected parent directory
l() {
  local declare dirs=()
  get_parent_dirs() {
    if [[ -d "${1}" ]]; then dirs+=("$1"); else return; fi
    if [[ "${1}" == '/' ]]; then
      for _dir in "${dirs[@]}"; do echo $_dir; done
    else
      get_parent_dirs $(dirname "$1")
    fi
  }
  local DIR=$(get_parent_dirs $(realpath "${1:-$PWD}") | fzf-tmux --tac)
  cd "$DIR"
}

# d - fuzzy cd from anywhere
# ex: d word1 word2 ... (even part of a file name)
# zsh autoload function
d() {
  local file

  file="$(locate -Ai -0 $@ | grep -z -vE '~$' | fzf --read0 -0 -1)"

  if [[ -n $file ]]
  then
     if [[ -d $file ]]
     then
        cd -- $file
     else
        cd -- ${file:h}
     fi
  fi
}

# c - git commit browser
c() {
  git log --graph --color=always \
      --format="%C(auto)%h%d %s %C(black)%C(bold)%cr" "$@" |
  fzf --ansi --no-sort --reverse --tiebreak=index --bind=ctrl-s:toggle-sort \
      --bind "ctrl-m:execute:
                (grep -o '[a-f0-9]\{7\}' | head -1 |
                xargs -I % sh -c 'git show --color=always % | less -R') << 'FZF-EOF'
                {}
FZF-EOF"
}

# x - create new tmux session, or switch to existing one. Works from within tmux too. (@bag-man)
# `x` will allow you to select your tmux session via fzf.
# `x irc` will attach to the irc session (if it exists), else it will create it.

x() {
  [[ -n "$TMUX" ]] && change="switch-client" || change="attach-session"
  if [ $1 ]; then
    tmux $change -t "$1" 2>/dev/null || (tmux new-session -d -s $1 && tmux $change -t "$1"); return
  fi
  session=$(tmux list-sessions -F "#{session_name}" 2>/dev/null | fzf --exit-0) &&  tmux $change -t "$session" || echo "No sessions found."
}

# ftpane - switch pane (@george-b)
ftpane() {
  local panes current_window current_pane target target_window target_pane
  panes=$(tmux list-panes -s -F '#I:#P - #{pane_current_path} #{pane_current_command}')
  current_pane=$(tmux display-message -p '#I:#P')
  current_window=$(tmux display-message -p '#I')

  target=$(echo "$panes" | grep -v "$current_pane" | fzf +m --reverse) || return

  target_window=$(echo $target | awk 'BEGIN{FS=":|-"} {print$1}')
  target_pane=$(echo $target | awk 'BEGIN{FS=":|-"} {print$2}' | cut -c 1)

  if [[ $current_window -eq $target_window ]]; then
    tmux select-pane -t ${target_window}.${target_pane}
  else
    tmux select-pane -t ${target_window}.${target_pane} &&
    tmux select-window -t $target_window
  fi
}

# mkdir and move there
mkd () {
  mkdir -p "$1"
  cd $1
}

# search pdfs and within pdfs
p () {
    open=mupdf   # this will open pdf file withthe default PDF viewer on KDE, xfce, LXDE and perhaps on other desktops.

    ag -U -g ".pdf$" \
    | fast-p \
    | fzf --read0 --reverse -e -d $'\t'  \
        --preview-window down:80% --preview '
            v=$(echo {q} | tr " " "|");
            echo -e {1}"\n"{2} | grep -E "^|$v" -i --color=always;
        ' \
    | cut -z -f 1 -d $'\t' | tr -d '\n' | xargs -r --null $open > /dev/null 2> /dev/null
}