#!/usr/bin/env sh

# Description: Fuzzy find and execute nnn plugins (and, optionally, custom scripts located elsewhere).
# Description and details of plugins can be previewed from the fzf interface. Use `?` to toggle preview
# pane on and off, ^Up/^Dn to scroll.
#
# For better compatibility with as many nnn plugins as possible, fzplug will first execute
# the chosen script on the file hovered in nnn, and upon failure, try to run it with no target
# (i.e on an active selection, if present).
#
# Dependencies: find, fzf, cat (or bat, if installed)
# Shell: POSIX compliant
# Author: Kabouik

# Optional scripts sources
# Leave blank or fill with the absolute path of a folder containing executable scripts other than nnn plugins
# (e.g., "$HOME/.local/share/nautilus/scripts", since there are numerous Nautilus script git repositories).
# Add extra variables if need be, but be sure to call them in the find command below at lines 27 and 33.
#CUSTOMDIR1="$HOME/.local/share/nautilus/scripts"
CUSTOMDIR1=""
CUSTOMDIR2=""

nnnpluginsdir="$HOME/.config/nnn/plugins"

# Preview with bat if installed
if [ -z "$(command -v bat)" ]; then
    plugin=$(find "$nnnpluginsdir" "$CUSTOMDIR1" "$CUSTOMDIR2" \
        -maxdepth 3 -perm -111 -type f 2>/dev/null | fzf --ansi --preview \
        "cat {}" \
        --preview-window right:66%:wrap --delimiter / --with-nth -1 \
        --bind="?:toggle-preview")
else
    plugin=$(find "$nnnpluginsdir" "$CUSTOMDIR1" "$CUSTOMDIR2" \
        -maxdepth 3 -perm -111 -type f 2>/dev/null | fzf --ansi --preview \
        "bat --terminal-width='$(tput cols)' --decorations=always --color=always \
              --style='${BAT_STYLE:-header,numbers}' {}" \
        --preview-window right:66% --delimiter / --with-nth -1 \
        --bind="?:toggle-preview")
fi

# Try running the script on the hovered file, and abort if no plugin was selected (ESC or ^C pressed),
err=0
if ! [ "$plugin" = "" ]; then
    "$plugin" "$1" || err=1
fi

# If attempt with hovered file fails, try without any target
# (nnn selections should still be passed to the script int hat case)
if [ "$err" -eq "1" ]; then
    clear && "$plugin" || err=2
fi

# Abort and show error if both fail
if [ "$err" -eq "2" ]; then
    sep="\n---\n"
    printf "$sep""Failed to execute '%s'. See error above or try without fzfplug. Press return to continue. " "$plugin" && read -r _ && clear
fi