#!/usr/bin/env bash

# @file /usr/bin/opener
# @brief Opens a file type with the appropriate program based on the mime-type
# @description
#   This script heavily borrows from [opener](https://github.com/Docbroke/shell_tools/blob/main/opener).
#   It makes some minor tweaks including linting fixes. It is configured
#   to properly work with [Gas Station](https://github.com/megabyte-labs/Gas-Station).
#   It is used to handle cross-VM links when Gas Station is used to provision [Qubes](https://www.qubes-os.org/).
#   When called with -d, the default program is used.

# Default to system open executable on macOS
if [ -d /Applications ] && [ -d /Library ]; then
  /usr/bin/open "$*" && exit 0
fi

# shellcheck disable=SC2124
getopts d: name
case $name in
	d) file=$OPTARG
		default=true ;;
	*) file="$@" ;;
esac

[[ -z $file || ! -e $file ]] &&
	exit 1

## mimetype from perl-file-mimeinfo gives better results compared to file
type mimetype &> /dev/null && mime_type="$(mimetype -b "$file")" || \
	mime_type="$(file -b --mime-type "$file")"

## create some lists
XBROWSERS=("firefox" "chromium" "vimb" "qutebrowser" "weaver" "vivaldi")
TBROWSERS=("w3m" "links" "lynx" "elinks")
XEDITORS=("gvim" "geany" "leafpad" "mousepad")
TEDITORS=("cat" "less" "vim" "vis" "nano" "micro")
XFMS=("pcmanfm" "nautilus" "rof" "thunar")
TFMS=("ncdu" "du -h" "vifm" "ranger" "mc" "fff" "nnn" "clifm")
PDFVIEWERS=("llpp" "xournalpp" "mupdf" "qpdfview")
DOCVIEWERS=("llpp" "foliate" "mupdf" "qpdfview")
CHMVIEWERS=("kchmviewer" "xchm" "chmopen")
BOOKVIEWERS=("$TERMINAL --geometry=1920x1050 -p Large -x epy.py" "foliate" "llpp" "mupdf")
ARCHIVERS=("als" "lsar" "unar" "aunpack -D")
VIEWERS=("feh" "sxiv" "gifview -a" "display" "mtpaint" "gimp" "viewnoir" "fbi" "lp")
VPLAYERS=("mpv --player-operation-mode=pseudo-gui" "vlc" "cvlc" "ffplay" "ffprobe" "mediainfo")
APLAYERS=("mpv --player-operation-mode=pseudo-gui" "vlc" "cvlc" "ffplay" "ffprobe" "mediainfo" "soxi" "mpg123")

## some defaults
if [[ -n "$DISPLAY" ]]; then
	PLAYER="mpv --player-operation-mode=pseudo-gui"
else
	PLAYER="mpv --vo=drm"
fi
if [[ -n "$DISPLAY" ]]; then
	VIEWER="sxiv -fbq $file $PWD"
else
	VIEWER=fbi
fi
TERMINAL=terminator
EDITOR=vis
BROWSER=weaver
PDFVIEWER=llpp
DOCVIEWER=llpp
CHMVIEWER=kchmviewer
BOOKVIEWER="$TERMINAL --geometry=1920x1050  -p Large -x epy.py"

case "$mime_type" in
	text/html|text/xml|application/x-mimearchive|message/rfc822)
		if [[ $default == true ]]; then
			$BROWSER "$file" && exit
		elif [[ $TERM = linux && -n $DISPLAY ]]; then
			select ops in exit "${XBROWSERS[@]}" "${TBROWSERS[@]}" $EDITOR; do
				[[ $ops = exit ]] && exit
				[[ $ops = w3m || $ops = links || $ops = elinks || $EDITOR ]] && $TERMINAL -x "$ops" "$file" &
				"$ops" "$file" &> /dev/null &
			done
		elif [[ $TERM != linux && -n $DISPLAY ]]; then
			select ops in exit "${XBROWSERS[@]}" "${TBROWSERS[@]}" $EDITOR; do
				[[ $ops = exit ]] && exit
				"$ops" "$file"
			done
		else
			select ops in exit "${TBROWSERS[@]}" $EDITOR; do
				[[ $ops = exit ]] && exit
				"$ops" "$file"
			done
		fi
	;;

	text/*|*/xml|application/x-httpd-php3|application/x-httpd-php4|application/x-httpd-php5|application/x-shellscript)
		[[ $default == true ]] && \
		if [[ $TERM = linux && -n $DISPLAY ]]; then
			$TERMINAL -x "${VISUAL:-${EDITOR:-vis}}" "$file"
		else
			"${VISUAL:-${EDITOR:-vis}}" "$file"
		fi && exit
		select ops in exit "${XEDITORS[@]}" "${TEDITORS[@]}"; do
				[[ $ops = exit ]] && exit
				"$ops" "$file"
		done
	;;

	image/*)
		[[ $default == true ]] && $VIEWER "$file" && exit
		select ops in exit "${VIEWERS[@]}"; do
			[[ $ops = exit ]] && break
			$ops "$file" &> /dev/null &
		done
	;;

	video/*|application/x-matroska)
		[[ $default == true ]] && $PLAYER "$file" && exit
		if [[ -n $DISPLAY ]]; then
			select ops in exit "${VPLAYERS[@]}"; do
				[[ $ops = exit ]] && break
				$ops "$file" &
			done
		else
			mpv --vo=drm -- "$file"
		fi
	;;

	audio/*| application/ogg|application/x-ogg|application/mxf|application/sdp|application/smil|application/x-smil|application/streamingmedia|application/x-streamingmedia|application/vnd.rn-realmedia|application/vnd.rn-realmedia-vbr)
		[[ $default == true ]] && $PLAYER "$file" && exit
		select ops in exit "${APLAYERS[@]}"; do
			[[ $ops = exit ]] && break
			$ops "$file" &
		done
	;;

	application/pdf|application/x-pdf)
		[[ $default == true ]] && $PDFVIEWER "$file" && exit
		if [[ -n $DISPLAY ]]; then
			select ops in exit "${PDFVIEWERS[@]}"; do
				[[ $ops = exit ]] && break
				$ops "$file" &> /dev/null &
			done
		else
			fbgs "$file"
		fi
	;;

	application/x-cbz|applilcation/oxps|application/vnd.ms-xpsdocument)
		[[ $default == true ]] && $DOCVIEWER "$file" && exit
		select ops in exit "${DOCVIEWERS[@]}"; do
			[[ $ops = exit ]] && break
			$ops "$file" &> /dev/null &
		done
	;;
	application/octet-stream)
		case "$file" in
			*.chm|*.CHM)
				[[ $default == true ]] && $CHMVIEWER "$file" && exit
				select ops in exit "${CHMVIEWERS[@]}"; do
					[[ $ops = exit ]] && break
					$ops "$file" &
				done
			;;
			*.gpg)
				gpg -d "$file"
			;;
			*.mobi)
				[[ $default == true ]] && $BOOKVIEWER "$file" && exit
				select ops in exit "${BOOKVIEWERS[@]}"; do
					[[ $ops = exit ]] && break
					$ops "$file" &> /dev/null &
				done
			;;
			*)
				echo "unknow filetype, probably binary"
			;;
		esac
	;;
	application/vnd.ms-htmlhelp)
		[[ $default == true ]] && $CHMVIEWER "$file" && exit
		select ops in exit "${CHMVIEWERS[@]}"; do
			[[ $ops = exit ]] && break
			$ops "$file" &
		done
	;;

	application/vnd.comicbook*)
		select ops in exit llpp mupdf foliate; do
			[[ $ops = exit ]] && break
			$ops "$file" &
		done
	;;

	application/epub+zip|application/x-mobipocket-ebook)
		[[ $default == true ]] && $BOOKVIEWER "$file" && exit
		select ops in exit "${BOOKVIEWERS[@]}"; do
			[[ $ops = exit ]] && break
			$ops "$file" &> /dev/null &
		done
	;;

	application/pgp-encrypted)
		gpg -d "$file"
	;;

	application/*zip*|application/x-?ar|application/x-?z*|application/x-compressed*|application/vnd.rar|application/x-*-image|application/x-msi)
		case "$file" in
			*.xoj|*.xopp) xournalpp "$file" &> /dev/null ;;
			*.cb?)
				select ops in exit llpp mupdf foliate als unar; do
					[[ $ops = exit ]] && break
					[[ $ops = als || $ops = unar ]] && "$ops" "$file"
					"$ops" "$file" &> /dev/null &
				done
			;;
			*)
				if [[ $default == true ]]; then
					mkdir "$file.tmp"
					archivemount "$file" "$file.tmp"
					echo -e "$file mounted at $file.tmp directory\n remove with fusermount -u $file.tmp"
				else
					select ops in exit "${ARCHIVERS[@]}" ; do
						[[ $ops = exit ]] && break
						# [[ $ops = aunpack ]] && aunpack -D "$file"
						$ops "$file"
					done
				fi
			;;
		esac
	;;

	*opendocument*|*openxmlformats*|*msword|*ms-excel|*ms-powerpoint|*abiword|*write*)
		[[ -n $DISPLAY ]] && libreoffice "$file" --norestore &> /dev/null
		[[ -z $DISPLAY ]] && \
			case "$file" in
				*.odt|*.odp|*.ods|*.sxw) odt2txt "$file" ;;
				*.doc) antiword "$file" ;;
				*.docx) docx2txt "$file" - | $PAGER ;;
				*) echo "unable to open" ;;
			esac
	;;

	inode/directory)
		select ops in exit "${TFMS[@]}" "${XFMS[@]}"; do
			[[ $ops = exit ]] && break
			$ops "$file"
		done
	;;

	inode/x-empty)
		echo "empty file"
		rm -i "$file"
	;;

	inode/mount-point)
		## unmount by default
		# select ops in exit unmount; do
			# [[ $ops = exit ]] && break
			# [[ $ops = unmount ]] && fusermount -zu "$file" && rmdir "$file"
			fusermount -zu "$file" && rmdir "$file" && echo "$file unmounted and removed"
		# done
	;;

	*)
		case "$file" in
			*) echo "no filetype association for $file" ;;
		esac
	;;
esac