di-camostudio.sh

#!/usr/bin/env zsh -f
# Purpose:
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2020-07-25

NAME="$0:t:r"

[[ -e "$HOME/.path" ]] && source "$HOME/.path"

	# moves itself to /Applications/ if installed anywhere else
INSTALL_TO='/Applications/Camo Studio.app'

XML_FEED="https://uds.reincubate.com/release-notes/camo/?format=sparkle"

INFO=$(curl -sfLS "$XML_FEED" | awk '/<item>/{i++}i==1')

URL=$(echo "$INFO" \
	| fgrep '<enclosure' \
	| sed 	-e 's#.*http#http#g' \
			-e 's#" .*##g' \
			-e 's# #%20#g' \
			-e 's#\[#%5B#g' \
			-e 's#\]#%5D#g')

LATEST_VERSION=$(echo "$INFO"  | fgrep '<enclosure' | sed -e 's#.*shortVersionString="##g' -e 's#".*##g')

LATEST_BUILD=$(echo "$INFO" | fgrep '<enclosure' | sed -e 's#.*sparkle:version="##g' -e 's#" .*##g')

if [[ -e "$INSTALL_TO" ]]
then

	INSTALLED_VERSION=$(defaults read "${INSTALL_TO}/Contents/Info" CFBundleShortVersionString)

	INSTALLED_BUILD=$(defaults read "${INSTALL_TO}/Contents/Info" CFBundleVersion)

	autoload is-at-least

	is-at-least "$LATEST_VERSION" "$INSTALLED_VERSION"

	VERSION_COMPARE="$?"

	is-at-least "$LATEST_BUILD" "$INSTALLED_BUILD"

	BUILD_COMPARE="$?"

	if [ "$VERSION_COMPARE" = "0" -a "$BUILD_COMPARE" = "0" ]
	then
		echo "$NAME: Up-To-Date ($INSTALLED_VERSION/$INSTALLED_BUILD)"
		exit 0
	fi

	echo "$NAME: Outdated: $INSTALLED_VERSION/$INSTALLED_BUILD vs $LATEST_VERSION/$LATEST_BUILD"

	FIRST_INSTALL='no'

	if [[ ! -w "$INSTALL_TO" ]]
	then
		echo "$NAME: '$INSTALL_TO' exists, but you do not have 'write' access to it, therefore you cannot update it." >>/dev/stderr

		exit 2
	fi

else

	FIRST_INSTALL='yes'
fi

FILENAME="$HOME/Downloads/${${INSTALL_TO:t:r}// /}-${${LATEST_VERSION}// /}_${${LATEST_BUILD}// /}.zip"


if (( $+commands[lynx] ))
then

	# RELEASE_NOTES_HTML=$(echo "${INFO}" | tr '\012' ' ' | sed 's#.*CDATA\[##g ; s#\]\].*##g')

	RELEASE_NOTES=$(echo "$INFO" \
					| tr '\012' ' ' \
					| sed 's#.*CDATA\[##g ; s#\]\].*##g' \
					| lynx -dump -width='10000' -display_charset=UTF-8 -assume_charset=UTF-8 -pseudo_inlines -stdin -nomargins;
					echo "\nURL: $URL" )

	echo "${RELEASE_NOTES}" | tee -a "$FILENAME:r.txt"

fi

echo "$NAME: Downloading '$URL' to '$FILENAME':"

curl --continue-at - --fail --location --output "$FILENAME" "$URL"

EXIT="$?"

	## exit 22 means 'the file was already fully downloaded'
[ "$EXIT" != "0" -a "$EXIT" != "22" ] && echo "$NAME: Download of $URL failed (EXIT = $EXIT)" && exit 0

[[ ! -e "$FILENAME" ]] && echo "$NAME: $FILENAME does not exist." && exit 0

[[ ! -s "$FILENAME" ]] && echo "$NAME: $FILENAME is zero bytes." && rm -f "$FILENAME" && exit 0

egrep -q '^Local sha256:$' "$FILENAME:r.txt" 2>/dev/null

EXIT="$?"

if [ "$EXIT" = "1" -o ! -e "$FILENAME:r.txt" ]
then
	(cd "$FILENAME:h" ; \
	echo "\n\nLocal sha256:" ; \
	shasum -a 256 "$FILENAME:t" \
	)  >>| "$FILENAME:r.txt"
fi



	## make sure that the .zip is valid before we proceed
(command unzip -l "$FILENAME" 2>&1 )>/dev/null

EXIT="$?"

if [ "$EXIT" = "0" ]
then
	echo "$NAME: '$FILENAME' is a valid zip file."

else
	echo "$NAME: '$FILENAME' is an invalid zip file (\$EXIT = $EXIT)"

	mv -fv "$FILENAME" "$HOME/.Trash/"

	mv -fv "$FILENAME:r".* "$HOME/.Trash/"

	exit 0

fi

	## unzip to a temporary directory
UNZIP_TO=$(mktemp -d "${HOME}/.Trash/${NAME}-XXXXXXXX")

echo "$NAME: Unzipping '$FILENAME' to '$UNZIP_TO':"

ditto -xk --noqtn "$FILENAME" "$UNZIP_TO"

EXIT="$?"

if [[ "$EXIT" == "0" ]]
then
	echo "$NAME: Unzip successful"
else
		# failed
	echo "$NAME failed (ditto -xkv '$FILENAME' '$UNZIP_TO')"

	exit 1
fi

if [[ -e "$INSTALL_TO" ]]
then

	pgrep -xq "$INSTALL_TO:t:r" \
	&& LAUNCH='yes' \
	&& osascript -e "tell application \"$INSTALL_TO:t:r\" to quit"

	echo "$NAME: Moving existing (old) '$INSTALL_TO' to '$HOME/.Trash/'."

	mv -f "$INSTALL_TO" "$HOME/.Trash/$INSTALL_TO:t:r.$INSTALLED_VERSION.app"

	EXIT="$?"

	if [[ "$EXIT" != "0" ]]
	then

		echo "$NAME: failed to move existing '$INSTALL_TO' to '$HOME/.Trash'."

		exit 1
	fi
fi

echo "$NAME: Moving new version of '$INSTALL_TO:t' (from '$UNZIP_TO') to '$INSTALL_TO'."

	# Move the file out of the folder
mv -n "$UNZIP_TO/$INSTALL_TO:t" "$INSTALL_TO"

EXIT="$?"

if [[ "$EXIT" = "0" ]]
then

	echo "$NAME: Successfully installed '$UNZIP_TO/$INSTALL_TO:t' to '$INSTALL_TO'."

else
	echo "$NAME: Failed to move '$UNZIP_TO/$INSTALL_TO:t' to '$INSTALL_TO'."

	exit 1
fi

[[ "$LAUNCH" = "yes" ]] && open -a "$INSTALL_TO"








exit 0
#EOF