#!/usr/bin/env bash

# Check your installed feh path and change $feh_cmd to your liking

[[ -z $1 ]] && ( echo "no arguments given" 1>&2; exit 1; )

feh_cmd=(
	'/usr/bin/feh'
	'-sZF'
	'--scale-down'
	'--scroll-step'
	'50'
	'--no-jump-on-resort'
	'--info'
	"echo %n"
	'--draw-tinted'
	'--image-bg'
	'black'
	'--draw-actions'
	'--slideshow-delay'
	'9999'
	'-q'
	'--no-xinerama'
	'--sort'
	'filename'
)
ARG="$1"
images=()
DIR="$PWD"
VALID_PATT='(image|inode)'

if [[ "$DIR" = "" ]]
	then
	DIR="$(pwd 2> /dev/null)"
	if [[ "$DIR" = "" ]]
		then
		DIR="$HOME"
		#if [[ "$DIR" = "" ]]
		#	then
		#	DIR="/home/user"
		#fi
	fi
fi

if [[ ! -d "$(dirname "$DIR")" ]]
	then
	echo "$DIR is not a directory" 1>&2
	exit 1
fi

if [[ $# -gt 1 ]]
	then
	arglen=$#
	args=("$@")
	LOOPED=0
	for (( LOOPED = 0; LOOPED < arglen; LOOPED++ )); do
		if [[ ! "${args[$LOOPED]:0:1}" = "/" ]]
			then
			args[$LOOPED]="$DIR/${args[$LOOPED]}"
		fi
		MIMETYPE="$(file -b -L --mime-type "${args[$LOOPED]}")"
		if [[ $? -ne 0 ]] || [[ ! "${MIMETYPE:0:5}" =~ $VALID_PATT ]]
			then
			notify-send -i error "My Feh Image Viewer" "$(basename "${args[$LOOPED]}") is not an image\\n(""$MIMETYPE"")"
			continue
		else
			images+=("${args[$LOOPED]}")
		fi
	done
	ARG="${images[0]}"
else
	images+=("$ARG")
	if [[ ! "${images[0]:0:1}" = "/" ]]
		then
		images[0]="$DIR/${images[0]}"
		ARG="${images[0]}"
	fi
	MIMETYPE="$(file -b -L --mime-type "${images[0]}")"
	if [[ $? -ne 0 ]] || [[ ! "${MIMETYPE:0:5}" =~ $VALID_PATT ]]
		then
		notify-send -i error "My Feh Image Viewer" "$(basename "${images[0]}") is not a valid path\\n(""$MIMETYPE"")"
		exit 1
	fi
fi

if [[ -f "${images[0]}" ]]
	then
	if [[ ${#images[@]} -eq 1 ]]
		then
		images=("$(dirname "$ARG")")
	fi
	"${feh_cmd[@]}" --start-at "$ARG" "${images[@]}" &
elif [[ -d "${images[0]}" ]]
	then
	"${feh_cmd[@]}" -r "${images[@]}" &
fi

# overflooded opened files, kill em all
while [[ $(pgrep -lx feh | wc -l) -gt 10 ]]
do
	pkill -x feh
	notify-send -i error "Overflooding feh" "Closing them all"
	sleep 2s
done

exit $?