di-clarify.sh

#!/usr/bin/env zsh -f
# Purpose: Download and install latest version of http://www.clarify-it.com/
#
# From:	Timothy J. Luoma
# Mail:	luomat at gmail dot com
# Date:	2015-12-04

NAME="$0:t:r"

INSTALL_TO='/Applications/Clarify.app'

HOMEPAGE="http://www.clarify-it.com/"

DOWNLOAD_PAGE="http://www.clarify-it.com/download/mac"

SUMMARY="Clarify 2 _was_ a Faster, Simpler Alternative to Screen Recording."

if [[ -e "$HOME/.path" ]]
then
	source "$HOME/.path"
fi

	## 2018-07-17 this feed seemed to be outdated
	#XML_FEED='http://www.bluemangolearning.com/download/clarify/2_0/auto_update/release/clarify_appcast.xml'
	##
	## 2018-07-17 found new feed via find_appcast
XML_FEED="https://s3.amazonaws.com/files.clarify-it.com/v2/updaters/release/appcast.xml"

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

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

	# If any of these are blank, we should not continue
if [ "$INFO" = "" -o "$LATEST_VERSION" = "" -o "$URL" = "" ]
then
	echo "$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 2>/dev/null || echo '0'`

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

	autoload is-at-least

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

	if [ "$?" = "0" ]
	then
		echo "$NAME: Installed version ($INSTALLED_VERSION) is ahead of official version $LATEST_VERSION"
		exit 0
	fi

	echo "$NAME: Outdated (Installed = $INSTALLED_VERSION vs Latest = $LATEST_VERSION)"

fi

FILENAME="$HOME/Downloads/$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


if [[ -e "$INSTALL_TO" ]]
then
		## Quit app, if running
		# 	pgrep -xq "Clarify" \
		# 	&& LAUNCH='yes' \
		# 	&& osascript -e 'tell application "Clarify" to quit'

		# move installed version to trash
	mv -vf "$INSTALL_TO" "$HOME/.Trash/$INSTALL_TO:t:r.$INSTALLED_VERSION.app"
fi

echo "$NAME: Installing $FILENAME to $INSTALL_TO:h/"

	# Extract from the .zip file and install (this will leave the .zip file in place)
ditto --noqtn -xk "$FILENAME" "$INSTALL_TO:h/"

EXIT="$?"

if [ "$EXIT" = "0" ]
then
	echo "$NAME: Installation of $INSTALL_TO was successful."

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

else
	echo "$NAME: Installation of $INSTALL_TO failed (ditto \$EXIT = $EXIT)\nThe downloaded file can be found at $FILENAME."

	exit 1
fi

exit 0
#EOF