#!/bin/sh

# AM INSTALL SCRIPT VERSION 3.6
set -u
APP=SAMPLE
SITE="DOMAIN/REPOSITORY" SITE2="DOMAIN/REPOSITORY"
#VARIANT1="Official (Portable Package)" VARIANT2="AppImage"
# NOTE: this should be commented like this ^

# CREATE DIRECTORIES AND ADD REMOVER
[ -n "$APP" ] && mkdir -p "/opt/$APP/tmp" "/opt/$APP/icons" && cd "/opt/$APP/tmp" || exit 1
printf "#!/bin/sh\nset -e\nrm -f /usr/local/bin/$APP\nrm -R -f /opt/$APP" > ../remove
printf '\n%s' "rm -f /usr/local/share/applications/$APP-AM.desktop" >> ../remove
chmod a+x ../remove || exit 1

# DOWNLOAD AND PREPARE THE APP
read -r -p "
 Choose a package format:

 1. Official portable package.

    Source: $SITE

 2. Unofficial AppImage.

    Source: $SITE2

 Which version you choose (type a number and press ENTER)?" response
RELEASE=""

if echo "$response" | grep -q "^1"; then
	RELEASE="PORTABLE"
	version=$(FUNCTION)
	wget "$version" || exit 1
	[ -e ./*7z ] && 7z x ./*7z && rm -f ./*7z
	[ -e ./*tar.* ] && tar fx ./*tar.* && rm -f ./*tar.*
	[ -e ./*zip ] && unzip -qq ./*zip 1>/dev/null && rm -f ./*zip
	cd ..
	mv ./tmp/*/* ./ 2>/dev/null || mv ./tmp/* ./"$APP" 2>/dev/null || mv ./tmp/* ./
elif echo "$response" | grep -q "^2"; then
	RELEASE="APPIMAGE"
	version=$(FUNCTION)
	wget "$version" || exit 1
	cd ..
	mv ./tmp/*mage ./"$APP"
fi
[ -z "$RELEASE" ] && exit 0
rm -R -f ./tmp || exit 1
echo "$version" > ./version
chmod a+x ./"$APP" || exit 1

# LINK TO PATH
ln -s "/opt/$APP/$APP" "/usr/local/bin/$APP"

if [ "$RELEASE" = APPIMAGE ]; then
	# SCRIPT TO UPDATE THE PROGRAM
	cat <<-'HEREDOC' >> ./AM-updater
	#!/bin/sh
	set -u
	APP=SAMPLE
	SITE="DOMAIN/REPOSITORY"
	version0=$(cat "/opt/$APP/version")
	version=$(FUNCTION)
	[ -n "$version" ] || { echo "Error getting link"; exit 1; }
	if command -v appimageupdatetool >/dev/null 2>&1; then
	   cd "/opt/$APP" || exit 1
	   appimageupdatetool -Or ./"$APP" && chmod a+x ./"$APP" && echo "$version" > ./version && exit 0
	fi
	if [ "$version" != "$version0" ]; then
	   mkdir "/opt/$APP/tmp" && cd "/opt/$APP/tmp" || exit 1
	   notify-send "A new version of $APP is available, please wait"
	   wget "$version" || exit 1
	   # Use tar fx ./*tar* here for example in this line in case a compressed file is downloaded.
	   cd ..
	   mv --backup=t ./tmp/*mage ./"$APP"
	   chmod a+x ./"$APP" || exit 1
	   echo "$version" > ./version
	   rm -R -f ./*zs-old ./*.part ./tmp ./*~
	   notify-send "$APP is updated!"
	else
	   echo "Update not needed!"
	fi
	HEREDOC
	chmod a+x ./AM-updater || exit 1

	# LAUNCHER & ICON
	./"$APP" --appimage-extract *.desktop 1>/dev/null
	./"$APP" --appimage-extract .DirIcon 1>/dev/null && mv ./squashfs-root/.DirIcon ./DirIcon
	COUNT=0
	while [ "$COUNT" -lt 10 ]; do # Tries to get the actual icon/desktop if it is a symlink to another symlink
		for f in squashfs-root/*.desktop; do
			FILE="$f"
			if [ -L "$f" ]; then
				LINKPATH="$(readlink "$f" | sed 's|^\./||' 2>/dev/null)"
				./"$APP" --appimage-extract "$LINKPATH" 1>/dev/null
				FILE="./squashfs-root/$LINKPATH"
			fi
			if grep -qi '^NoDisplay=true$' "$FILE" 2>/dev/null; then mv "$FILE" ./"$APP"-handler-AM.desktop && printf '\n%s' "rm -f /usr/local/share/applications/$APP-handler-AM.desktop" >> ./remove
			else [ ! -f ./"$APP"-AM.desktop ] && mv "$FILE" ./"$APP"-AM.desktop || mv "$FILE" ./"$APP"-"$COUNT"-AM.desktop && printf '\n%s' "rm -f /usr/local/share/applications/$APP-$COUNT-AM.desktop" >> ./remove
			fi
		done
		if [ -L ./DirIcon ]; then
			LINKPATH="$(readlink ./DirIcon | sed 's|^\./||' 2>/dev/null)"
			./"$APP" --appimage-extract "$LINKPATH" 1>/dev/null && mv ./squashfs-root/"$LINKPATH" ./DirIcon
		fi
		[ ! -L ./"$APP"-AM.desktop ] && [ ! -L ./DirIcon ] && break
		COUNT=$((COUNT + 1))
	done
	for f in ./*-AM.desktop; do [ "$f" != ./"$APP"-AM.desktop ] && [ -f "$f" ] && [ "$(sort ./"$APP"-AM.desktop)" = "$(sort "$f")" ] && rm -f "$f"; done
	sed -i "s#Exec=[^ ]*#Exec=$APP#g; s#Icon=.*#Icon=/opt/$APP/icons/$APP#g; s# --no-sandbox##g" ./*-AM.desktop
	mv ./*-AM.desktop /usr/local/share/applications/ && mv ./DirIcon ./icons/"$APP" 1>/dev/null
	rm -R -f ./squashfs-root
else
	# SCRIPT TO UPDATE THE PROGRAM
	cat <<-'HEREDOC' >> ./AM-updater
	#!/bin/sh
	set -u
	APP=SAMPLE
	SITE="DOMAIN/REPOSITORY"
	version0=$(cat "/opt/$APP/version")
	version=$(FUNCTION)
	[ -n "$version" ] || { echo "Error getting link"; exit 1; }
	if [ "$version" != "$version0" ]; then
	   mkdir "/opt/$APP/tmp" && cd "/opt/$APP/tmp" || exit 1
	   notify-send "A new version of $APP is available, please wait"
	   wget "$version" || exit 1
	   [ -e ./*7z ] && 7z x ./*7z && rm -f ./*7z
	   [ -e ./*tar.* ] && tar fx ./*tar.* && rm -f ./*tar.*
	   [ -e ./*zip ] && unzip -qq ./*zip 1>/dev/null && rm -f ./*zip
	   cd ..
	   mv ./tmp/*/* ./ 2>/dev/null || mv ./tmp/* ./"$APP" 2>/dev/null || mv ./tmp/* ./
	   chmod a+x ./"$APP" || exit 1
	   echo "$version" > ./version
	   rm -R -f ./tmp ./*~
	   notify-send "$APP is updated!"
	else
	   echo "Update not needed!"
	fi
	HEREDOC
	chmod a+x ./AM-updater || exit 1

	# ICON
	mkdir -p icons
	curl -s -Lo ./icons/"$APP" https://portable-linux-apps.github.io/icons/"$APP".png

	# LAUNCHER
	rm -f /usr/local/share/applications/"$APP"-AM.desktop
	cat <<-HEREDOC >> /usr/local/share/applications/"$APP"-AM.desktop
	[Desktop Entry]

	DESKTOP FILE, BUT WITH FOLLOWING PARAMETHERS:

	Exec=$APP %f
	Icon=/opt/$APP/icons/$APP

	HEREDOC
fi
