#!/bin/sh

# Inspired by https://github.com/salman-abedin/launch.sh
# Launches files based on their mimetypes
# Use option -s devour to swallow or -s " " to open normally from terminal
# Use -t to specify mimetype
# Requires: dmenu_path or similar (fallback)
#           dmenu-filepicker

menu=${MENU:-dmenu}

video=${VIDEOPLAYER:-mpv}
music=${MUSICPLAYER:-mpv}
pdf=${VIEWER:-zathura}
img=${IMAGEVIEWER:-imv}
word=${TEXTDOCUMENT:-libreoffice}
sheet=${SPREADSHEET:-libreoffice}
html=${HTMLVIEWER:-firefox}
xedit=${XEDITOR:-gedit}

while getopts "s:t:" opt; do
	case "$opt" in
		s)
			launcher="$OPTARG"
			;;
		t)
			mimetype="$OPTARG"
			;;
	esac
done

# If launcher = "", assume running in terminal, so some programs change
if [ -z "$launcher" ]; then
	xedit=${EDITOR:-vi}
fi

shift `expr $OPTIND - 1`
toopen=$@
[ -z "$toopen" ] && toopen=$(dmenu-filepicker)

for f in $toopen; do
	[ ! -f "$f" ] && echo "$f: bad argument" && exit 1
	[ -z "$mimetype" ] && mimetype="$(file --mime-type "$f" -bL)"

	prog=""
	case "$mimetype" in
		video/*)
			prog="$video"
			;;
		audio/*)
			prog="$music"
			;;
		application/pdf | application/postscript | image/vnd.djvu)
			prog="$pdf"
			;;
		image/*)
			prog="$img"
			;;
		application/msword | \
		application/vnd.oasis.opendocument.text | text/rtf | \
		application/vnd.openxmlformats-officedocument.wordprocessingml.*)
			prog="$word"
			;;
		application/ms-excel | application/vnd.oasis.opendocument.spreadsheet | \
		text/rtf | application/vnd.openxmlformats-officedocument.spreadsheetml.*)
			prog="$sheet"
			;;
		text/html | text/enriched)
			prog="$html"
			;;
		text/*)
			prog="$xedit"
			;;
		application/zip)
			prog="unzip"
			;;
		application/x-rar-compressed)
			prog="unrar"
			;;
		application/x-archive | application/x-tar | \
		application/x-bzip2 | application/gzip | application/x-lzip | \
		application/x-lzma | application/x-xz | application/x-gtar)
			prog="tar -tavf"
			;;
		application/java-archive)
			prog="java -jar"
			;;
		*)
			prog=$(dmenu_path | $menu -p "How to open $f ?")
			;;
	esac

	if [ -n "$prog" ]; then
		$launcher $prog "$f" &
	else
		exit 1
	fi
done