#!/bin/sh

MENU_CMD="dmenu -fn \"monospace\" -p \"🤣\" -l 24"

[ "$XDG_SESSION_TYPE" = "wayland" ] && MENU_CMD="bemenu --fn \"monospace\" -p 🤣 -l 24"

cachedir=${XDG_CACHE_HOME:-"$HOME/.cache"}
if [ -d "$cachedir" ]; then
	cache=$cachedir/dmenu_emoji
	historyfile=$cachedir/dmenu_emoji_history
else			# if no xdg dir, fall back to dotfiles in ~
	cache=$HOME/.dmenu_emoji_cache
	historyfile=$HOME/.dmenu_emoji_history
fi

if ! [ -e "$cache" ] ; then
	#| cut -d ';' -f1 ~/.local/share/larbs/emoji \
	cat ~/.local/share/larbs/emoji > "$cache"
fi

chosen=$(awk -v histfile=$historyfile '
	BEGIN {
		while( (getline < histfile) > 0 ) {
			sub("^[0-9]+\t","")
			print
			x[$0]=1
		}
	} !x[$0]++ ' "$cache" \
	| $MENU_CMD \
	| awk -v histfile=$historyfile '
		BEGIN {
			FS=OFS="\t"
			while ( (getline < histfile) > 0 ) {
				count=$1
				sub("^[0-9]+\t","")
				fname=$0
				history[fname]=count
			}
			close(histfile)
		}

		{
			history[$0]++
			print
		}

		END {
			if(!NR) exit
			for (f in history)
				print history[f],f | "sort -t '\t' -k1rn >" histfile
		}
    ')

# Exit if none chosen.
[ -z "$chosen" ] && exit

# If you run this command with an argument, it will automatically insert the
# character. Otherwise, show a message that the emoji has been copied.
chosen="$(echo "$chosen" | sed "s/ .*//")"
if [ -n "$1" ]; then
  xdotool type "$(echo "$chosen" | sed "s/ .*//")"
else
	if [ "$XDG_SESSION_TYPE" = "wayland" ]; then
		echo "$chosen" | tr -d '\n' | wl-copy
	else
		echo "$chosen" | tr -d '\n' | xclip -selection clipboard
	fi
	notify-send "'$chosen' copied to clipboard." &
fi