di-cheatsheet.sh

#!/usr/bin/env zsh -f
# Purpose: Download and install the latest version of Cheat Sheet <https://mediaatelier.com/CheatSheet/>
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2018-08-04

NAME="$0:t:r"

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

[[ -e "$HOME/.config/di/defaults.sh" ]] && source "$HOME/.config/di/defaults.sh"

INSTALL_TO="${INSTALL_DIR_ALTERNATE-/Applications}/CheatSheet.app"

XML_FEED='https://mediaatelier.com/CheatSheet/feed.php'

HOMEPAGE="https://mediaatelier.com/CheatSheet/"

DOWNLOAD_PAGE="https://mediaatelier.com/CheatSheet/"

SUMMARY="Just hold the ⌘-Key a bit longer to get a list of all active short cuts of the current application. It's as simple as that."

	# Feed is a mess and development is not very active. Not worrying about this for now.
RELEASE_NOTES_URL='http://mediaatelier.com/CheatSheet/feedNotes.php'

INFO=($(curl -sfL "$XML_FEED" \
		| tr -s ' ' '\012' \
		| egrep 'sparkle:version=|url=' \
		| head -2 \
		| sort \
		| awk -F'"' '/^/{print $2}'))

	# "Sparkle" will always come before "url" because of "sort"
LATEST_VERSION="$INFO[1]"
# LATEST_BUILD="$INFO[2]"
URL="$INFO[2]"

	# If any of these are blank, we should not continue
if [ "$INFO" = "" -o "$URL" = "" -o "$LATEST_VERSION" = "" ]
then
	echo "$NAME: Error: bad data received:
	INFO: $INFO
	LATEST_VERSION: $LATEST_VERSION
	URL: $URL
	"

	exit 1
fi

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="$?"

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

	echo "$NAME: Outdated: $INSTALLED_VERSION vs $LATEST_VERSION"

# 	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# 	echo "$NAME: Outdated: $INSTALLED_VERSION/$INSTALLED_BUILD vs $LATEST_VERSION/$LATEST_BUILD"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 [[ -e "$INSTALL_TO/Contents/_MASReceipt/receipt" ]]
	then
		echo "$NAME: $INSTALL_TO was installed from the Mac App Store and cannot be updated by this script."
		echo "	Please use the App Store app to update it: <macappstore://showUpdatesPage?scan=true>"
		exit 0
	fi

else

	FIRST_INSTALL='yes'
fi

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

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

UNZIP_TO=$(mktemp -d "${TMPDIR-/tmp/}${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 "$INSTALL_TO" ]]
then
	echo "$NAME: Moving existing (old) \"$INSTALL_TO\" to \"$HOME/.Trash/\"."

	mv -vf "$INSTALL_TO" "$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 -vn "$UNZIP_TO/$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

exit 0
#EOF