di-brave.sh

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

	# must be in /Applications/ for 1Password

INSTALL_TO='/Applications/Brave Browser.app'

# XML_FEED='https://updates.bravesoftware.com/sparkle/Brave-Browser/stable/appcast.xml'
XML_FEED="https://updates.bravesoftware.com/sparkle/Brave-Browser/stable-arm64/appcast.xml"

NAME="$0:t:r"

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

HOMEPAGE="https://brave.com"

DOWNLOAD_PAGE="https://brave.com/download/"

SUMMARY="Much more than a browser, Brave is a new way of thinking about how the web works."

RELEASE_NOTES_URL='https://raw.githubusercontent.com/brave/brave-browser/master/CHANGELOG_DESKTOP.md'

INFO=$(curl -sfLS "$XML_FEED" \
| tr -s '\012' ' ' \
| sed 's# <item> #\
<item>#g' \
| egrep '^<item>' \
| tail -1)


INFO=($(curl -sfLS "$XML_FEED" \
| tr -s '\012' ' ' \
| sed 's# <item> #\
<item>#g' \
| egrep '^<item>' \
| tail -1 \
| sed 's#> <#>\
<#g' \
| sed -e '/<sparkle:deltas>/,$d' -e 's# #\
#g' \
| sort \
| egrep '^(url|sparkle:version|sparkle:shortVersionString)' \
| awk -F'"' '//{print $2}'))

URL="$INFO[3]"

LATEST_BUILD="$INFO[2]"

LATEST_VERSION="$INFO[1]"



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

	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 vs $LATEST_VERSION/$LATEST_BUILD)"
		exit 0
	fi

	echo "$NAME: Outdated: $INSTALLED_VERSION/$INSTALLED_BUILD vs $LATEST_VERSION/$LATEST_BUILD"

	FIRST_INSTALL='no'

else

	FIRST_INSTALL='yes'
fi

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

RELEASE_NOTES_TXT="$FILENAME:r.txt"

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

	cat "$RELEASE_NOTES_TXT"

else

	RELEASE_NOTES=$(curl -sfLS "$RELEASE_NOTES_URL" | awk '/^## /{i++}i==1')

	echo "${RELEASE_NOTES}\n\nSource: ${RELEASE_NOTES_URL}\nVersion: ${LATEST_VERSION} / ${LATEST_BUILD}\nURL: ${URL}" | tee "$RELEASE_NOTES_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

(cd "$FILENAME:h" ; echo "\nLocal sha256:" ; shasum -a 256 "$FILENAME:t" ) >>| "$FILENAME:r.txt"

echo "$NAME: Mounting $FILENAME:"

MNTPNT=$(hdiutil attach -nobrowse -plist "$FILENAME" 2>/dev/null \
	| fgrep -A 1 '<key>mount-point</key>' \
	| tail -1 \
	| sed 's#</string>.*##g ; s#.*<string>##g')

if [[ "$MNTPNT" == "" ]]
then
	echo "$NAME: MNTPNT is empty"
	exit 1
else
	echo "$NAME: MNTPNT is $MNTPNT"
fi

if [[ -e "$INSTALL_TO" ]]
then
		# Quit app, if running
	pgrep -xq "$INSTALL_TO:t:r" \
	&& LAUNCH='yes' \
	&& osascript -e "tell application \"$INSTALL_TO:t:r\" to quit"

		# move installed version to trash
	mv -f "$INSTALL_TO" "$HOME/.Trash/$INSTALL_TO:t:r.${INSTALLED_VERSION}_${INSTALLED_BUILD}.app"

	EXIT="$?"

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

		echo "$NAME: failed to move '$INSTALL_TO' to Trash. ('mv' \$EXIT = $EXIT)"

		exit 1
	fi

fi

echo "$NAME: Installing '$MNTPNT/$INSTALL_TO:t' to '$INSTALL_TO': "

ditto --noqtn -v "$MNTPNT/$INSTALL_TO:t" "$INSTALL_TO"

EXIT="$?"

if [[ "$EXIT" == "0" ]]
then
	echo "$NAME: Successfully installed $INSTALL_TO"
else
	echo "$NAME: ditto failed"

	exit 1
fi

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

echo -n "$NAME: Unmounting $MNTPNT: " && diskutil eject "$MNTPNT"

exit 0
#EOF