#!/bin/sh

# set '-eu' options for shell commands
# These options are used to have safer shell commands. Option '-e' is used to
# exit on error and option '-u' is used to give error for unset variables.
# Option '-f' disables pathname expansion which can be useful when $f, $fs, and
# $fx variables contain names with '*' or '?' characters. However, this option
# is used selectively within individual commands as it can be limiting at
# times.
set shellopts '-eu'

# set internal field separator (IFS) to "\n" for shell commands
# This is useful to automatically split file names in $fs and $fx properly
# since default file separator used in these variables (i.e. 'filesep' option)
# is newline. You need to consider the values of these options and create your
# commands accordingly.
set ifs "\n"

# leave some space at the top and the bottom of the screen
set scrolloff 10

# Basic Settings
set preview true
set sixel true
set shell /bin/sh
set previewer ~/.local/bin/lf/preview
set drawbox true
set info time

# Custom Functions
cmd open ${{
    case $(file -bL --mime-type "$1") in
        text/*) setsid -f "$TERMINAL -e xdg-open $f" >/dev/null 2>&1 &;;
        *) setsid -f xdg-open "$f" >/dev/null 2>&1 &;;
    esac
}}

cmd __cd :cd "$1"

# cd
cmd cd ${{
    kill $pid
    eval "inotifywait -me MODIFY $1 | \
            while read LINE; do send $id :reload; done &" 
    pid=$!
    send $id :__cd
}}

# Share on telegram
cmd send ${{
    wmctrl -x -a TelegramDesktop
    telegram-desktop -sendpath \
      $(for f in $fx; do readlink -f $f; done)
}}

ZERO="~/projects/code/scm/zero"
# Open lf config
cmd config $$EDITOR "$ZERO/home-environments/radio/files/.config/lf/lfrc"

# mkdir with :mkdir
cmd mkdir %mkdir -- "$@"

# rename file
cmd rename %mv "$f" $(echo "$@" | sed 's/ /\ /g')

# Open editor
cmd edit ${{
   setsid -f "$TERMINAL -e $EDITOR $f" &
}}

# Change file mode bits
cmd chmod %chmod "$@" && echo "Mode bits changed" & lf -remote reload

# Copy filename without extension
cmd yank-basename $basename -a -- $fx | head -c-1 | xclip --clipboard

# Upload selected files to 0x0 and yank it's path and link
cmd share %printf {for f in $fx; do echo "$f\n $(curl -F file=@$f http://0x0.st)" } | wl-copy && echo "File shared"

# Rotate file
cmd rotate-file %{{
    case "$1" in
    right) direction=1;;
    left) direction=-1;;
    *) direction=0;;
    esac
    case $(file --mime-type "$f" -bL) in
            image/*) convert "$f" -rotate $((90*direction)) "$f";;
    application/pdf) pdftk "$f" cat 1-end"$1" output "rotated-${f##*/}" \
                     && rm "$f" \
                     && mv "rotated-${f##*/}" "$f";;
            video/*) ffmpeg -i "$f" -vf "transpose=$((direction+1))" "rotated-${f##*/}" \
                     && rm "$f" \
                     && mv "rotated-${f##*/}" "$f";;
    inode/directory) for file in $(ls "$f"); do rotate "$1" "$file"; done;;
    esac
    echo "File rotated"
}}

# Rotate selected files
cmd rotate %{{
    case "$1" in
        right) direction=1;;
         left) direction=-1;;
            *) direction=0;;
    esac
    for file in "$fx"; do
        case $(file --mime-type "${file}" -bL) in
                image/*) convert "${file}" -rotate $((90*direction)) "${file}";;
        application/pdf) pdftk "${file}" cat 1-end"$1" output "rotated-${file##*/}" \
                         && rm "${file}" \
                         && mv "rotated-${file##*/}" "$file";;
                video/*) ffmpeg -i "${file}" -vf "transpose=$((direction+1))" "rotated-${file##*/}" \
                         && rm "${file}" \
                         && mv "rotated-${file##*/}" "${file}";;
        esac
    done
    echo "File rotated!"
}}

cmd extract ${{
    set -f
    case $f in
        *.tar.bz|*.tar.bz2|*.tbz|*.tbz2) tar xjvf $f;;
        *.tar.gz|*.tgz) tar xzvf $f;;
        *.tar.xz|*.txz) tar xJvf $f;;
        *.zip) unzip $f;;
        *.rar) unrar x $f;;
        *.7z) 7z x $f;;
    esac
}}

cmd compress ${{
    set -f
    mkdir $1
    cp -r $fx $1
    tar czf $1.tar.gz $1
    rm -rf $1
}}

cmd newfold %{{
    set -f
    mkdir -- "$1"
    mv -- $fx "$1"
}}

cmd term &{{
   setsid -f $TERMINAL >/dev/null 2>&1 & disown
}}

cmd e :edit
cmd q :quit

# Bindings
# Remove some defaults
map n
map e
map r
map dd

# File openers
map ee $$EDITOR "$f"
map e! $doas $EDITOR "$f"
map b  &setsid -f $BROWSER "$f"

# Basic functions
mao l cd "$f"
map c copy && echo "$fx" | wl-copy
map d delete
map x cut
map <enter> open
map <delete> delete
map rc push :rename<space>
map re $lf -remote "send $id :rename<space>$(printf '%q' ${f##*/})"
map <a-h> set hidden!
map <a-:> push $<space>
map <a-n> push :newfold<space>
map <a-r><a-r> :rotate right
map <a-r><a-l> :rotate left
map <a-t> :term 

# Movement
map gk top
map gj bottom
map gD cd ~/desktop
map gc cd ~/.config
map gd cd ~/documents
map gl cd ~/.local/share/downloads
map gm cd ~/music
map gp cd ~/pictures
map gv cd ~/videos

# run on startup
cmd on-cd &{{
    # '&' commands run silently in background (which is what we want here),
    # but are not connected to stdout.
    # To make sure our escape sequence still reaches stdout we pipe it to /dev/tty
    printf "\033]0; $(pwd | sed "s|$HOME|~|;s|.*/||g") - lf\007" > /dev/tty
}}

# also run at startup
on-cd

%[ $LF_LEVEL -eq 1 ] || echo "Warning: You're in a nested lf instance of depth $LF_LEVEL!"