SymphonyElectron/installer/mac/preinstall.sh
Vishwas Shashidhar a145e56369
SDA-1062: warn users before closing running app (#972)
- On macOS, currently, when trying to install new version of SDA, we simply kill the app before asking user if they'd like to quit and proceed.
- This fixes the issue and provides a better user experience.

Signed-off-by: Vishwas Shashidhar <vishwas.shashidhar@symphony.com>
2020-04-21 11:18:27 +05:30

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#!/bin/bash
delete_app()
{
# Delete the installed version only if it is older than the installing version
sudo rm -rf /Applications/Symphony.app
}
compare_versions()
{
# Get the installer version:
CURRENT_VERSION=APP_VERSION
# Get the currently installed version:
INSTALLED_VERSION=$(plutil -p /Applications/Symphony.app/Contents/Info.plist | awk '/CFBundleShortVersionString/ {print substr($3, 2, length($3)-2)}')
# If there are no versions installed, just exit the script
if [ -z "$INSTALLED_VERSION" -a "$INSTALLED_VERSION" != " " ]; then
echo "No version installed, so, exiting without version checks"
exit 0
fi
echo "This version is ${CURRENT_VERSION}"
echo "Installed version is ${INSTALLED_VERSION}"
# First, we replace the dots by blank spaces, like this:
VERSION=${CURRENT_VERSION//./ }
INSTALLED_VERSION=${INSTALLED_VERSION//./ }
# If you have a "v" in front of your versions, you can get rid of it like this:
VERSION=${VERSION//v/}
INSTALLED_VERSION=${INSTALLED_VERSION//v/}
# So, we just need to extract each number:
patch1=$(echo ${VERSION} | awk '{print $3}')
minor1=$(echo ${VERSION} | awk '{print $2}')
major1=$(echo ${VERSION} | awk '{print $1}')
patch2=$(echo ${INSTALLED_VERSION} | awk '{print $3}')
minor2=$(echo ${INSTALLED_VERSION} | awk '{print $2}')
major2=$(echo ${INSTALLED_VERSION} | awk '{print $1}')
# And now, we can simply compare the variables:
if [ ${major1} -lt ${major2} ]; then
echo "Installed version is newer than this version, exiting installation"
exit 1
fi
if [ ${major1} -eq ${major2} -a ${minor1} -lt ${minor2} ]; then
echo "Installed version is newer than this version, exiting installation"
exit 1
fi
if [ ${major1} -eq ${major2} -a ${minor1} -eq ${minor2} -a ${patch1} -lt ${patch2} ]; then
echo "Installed version is newer than this version, exiting installation"
exit 1
fi
delete_app
}
compare_versions