272 lines
9.0 KiB
Bash
Executable File
272 lines
9.0 KiB
Bash
Executable File
#!/usr/bin/bash
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######################################################################################
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# install-discord-linux.sh #
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######################################################################################
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# Description # #
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############### #
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# #
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# This script was created to automate the install of discord on your system. #
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# It installs it separately from a package manager (snap, apt, dnf, etc), so this #
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# can be used to install it on any linux system regardless of distro #
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# as long as the OS & processor supports it. #
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# #
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# This script was originally just setup to handle installing or updating the #
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# existing installation. It can be setup in crontab to handle it automatically so #
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# you never have to manually do it again. All you have to do is add it to your #
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# crontab to run daily or hourly (assuming you have a cron service installed) #
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# #
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# EX: #
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# """ #
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# CRONTAB="$(crontab -l)" #
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# if [[ $? -eq 0 ]]; then #
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# CRONTAB+="\n0 0 * * * /path/to/script.sh" #
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# echo -e "$CRONTAB" | crontab - #
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# else #
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# echo "0 0 * * * /path/to/script.sh" | crontab - #
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# fi #
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# """ #
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# #
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# Eventually I am wanting this script to also provide additional functionalities: #
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# - Install BetterDiscord #
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# - Handle multiple installations of discord (makes named config directories #
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# and will symlink them based on what "profile" you want to use). This will also #
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# allow you to have a installation that contains mods and others without. #
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# - Handle manual configurations of discord (where applicable) #
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# #
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######################################################################################
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# Dependencies # #
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################ #
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# #
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# 1) curl #
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# 2) bash (of course) #
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# #
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######################################################################################
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# BEGIN: Variables
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DEBUG=1
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ACTION=""
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DOWNLOAD_URL='https://discord.com/api/download/stable?platform=linux&format=tar.gz'
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VERSION_REGEX='[0-9]+\.[0-9]+\.[0-9]+'
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INSTALL_DIR=~/.opt
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[[ ! -d $INSTALL_DIR ]] && mkdir -p $INSTALL_DIR
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LOCAL_APPLICATION_DIR=~/.local/share/applications
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EXISTING_INSTALL=$INSTALL_DIR/Discord
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BUILD_FILE=$EXISTING_INSTALL/resources/build_info.json
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DESKTOP_FILE=$EXISTING_INSTALL/discord.desktop
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INSTALLED_DESKTOP_FILE=$LOCAL_APPLICATION_DIR/discord.desktop
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PACKAGE_DOWNLOAD_URL_BASE='https://dl.discordapp.net/apps/linux/{VERSION}/discord-{VERSION}.tar.gz'
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ICON_DIR=~/.local/share/icons
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DESKTOP_FILE_NEEDS_UPDATE=0
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REMOVE_AFTER_INSTALL=1
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# END: Variables
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# BEGIN: Helper Functions
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function log () {
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if [[ $DEBUG -eq 1 ]]; then
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local DATE=`date`
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local MESSAGE="${1:?"log: Message not provided"}"
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echo "$DATE : $MESSAGE"
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fi
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}
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function get_remote_version(){
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local REMOTE_VERSION=`curl -s $DOWNLOAD_URL | grep -Eo $VERSION_REGEX | head -n 1`
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if [[ "$REMOTE_VERSION" ]]; then
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echo "$REMOTE_VERSION"
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return 0
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else
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log "error: remote version not found"
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return 1
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fi
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}
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function do_download(){
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local VERSION="${1:?"do_download : Version was not provided"}"
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## If the provided version doesn't match the format #.#.#
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if [[ ! "$VERSION" =~ ^$VERSION_REGEX$ ]]; then
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log "do_download : the version ($VERSION) provided, does not match format $VERSION_REGEX."
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exit 2
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fi
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## Making the URL to download the package
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### replacing all {VERSION} in PACKAGE_DOWNLOAD_URL_BASE with $REMOTE_VERSION using string substitution
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PACKAGE_DOWNLOAD_URL="${PACKAGE_DOWNLOAD_URL_BASE//\{VERSION\}/$REMOTE_VERSION}"
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log "Download url created ($PACKAGE_DOWNLOAD_URL)"
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## Getting filename from url
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### Removing all characters from the last / back to leave only the filename
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FILENAME="${PACKAGE_DOWNLOAD_URL/*\/}"
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## Downloading the discord package (tar.gz)
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curl "$PACKAGE_DOWNLOAD_URL" -o "$FILENAME"
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log "File was downloaded as $FILENAME"
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}
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function update_desktop_file() {
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log "Updating desktop file"
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## Desktop file in the current/new install
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DESKTOP_FILE=$EXISTING_INSTALL/discord.desktop
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## Escaped becuase it would mess up the replacement syntax
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PATH_TO_REPLACE=\/usr\/bin
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PATH_REPLACEMENT=$EXISTING_INSTALL
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## Escaped becuase it would mess up the replacement syntax
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EXEC_TO_REPLACE=\/usr\/share\/discord\/Discord
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EXEC_REPLACEMENT=$EXISTING_INSTALL/Discord
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## Loading the desktop file contents into a variable to use replacement without sed
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DESKTOP_FILE_CONTENTS="$(<$DESKTOP_FILE)"
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## Replacing Path
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DESKTOP_FILE_CONTENTS="${DESKTOP_FILE_CONTENTS/$PATH_TO_REPLACE/$PATH_REPLACEMENT}"
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## Replacing Exec
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DESKTOP_FILE_CONTENTS="${DESKTOP_FILE_CONTENTS/$EXEC_TO_REPLACE/$EXEC_REPLACEMENT}"
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## Pushing replacement values to desktop file
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echo -e "$DESKTOP_FILE_CONTENTS" > $DESKTOP_FILE
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log "Desktop file has been updated"
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}
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function remove_installer () {
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if [[ $REMOVE_AFTER_INSTALL -eq 1 ]]; then
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rm -f $FILENAME
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fi
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}
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function do_install() {
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cd "$INSTALL_DIR"
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REMOTE_VERSION=`get_remote_version`
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do_download "$REMOTE_VERSION"
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## Error handling in case curl couldn't do the download (or error in script)
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if [[ -f $FILENAME ]]; then
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tar xf "$FILENAME"
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else
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log "$FILENAME failed to download. Exiting now"
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exit 3
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fi
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update_desktop_file
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[[ ! -d $ICON_DIR ]] && mkdir -p $ICON_DIR
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cp $EXISTING_INSTALL/discord.png $ICON_DIR/
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remove_installer
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}
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function do_upgrade(){
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cd "$INSTALL_DIR"
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REMOTE_VERSION=`get_remote_version`
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do_download "$REMOTE_VERSION"
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## FILENAME provided by do_download
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FILENAME="${FILENAME:?"do_upgrade : FILENAME not set by do_download"}"
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tar xf "$FILENAME"
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update_desktop_file
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remove_installer
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}
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# END: Helper Functions
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# BEGIN: Pre-Work Check
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if [[ -d $EXISTING_INSTALL ]] && [[ -f $BUILD_FILE ]]; then
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LOCAL_VERSION=`grep -Eo $VERSION_REGEX $BUILD_FILE`
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log "Local version was found to be ($LOCAL_VERSION)"
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else
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ACTION=INSTALL
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fi
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REMOTE_VERSION=`get_remote_version`
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log "Retrieved remote version ($REMOTE_VERSION)"
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# END: Pre-Work Check
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# BEGIN: Work
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## If ACTION hasn't already been set
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if [[ ! $ACTION ]]; then
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## Use read to get version numbers in arrays
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OIFS=$IFS
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IFS='.'
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read -a local_versions <<< "$LOCAL_VERSION"
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read -a remote_versions <<< "$REMOTE_VERSION"
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IFS=$OIFS
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## Check if the remote version is greater than the local
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for (( i=0; i<3; i++)); do
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## If at any point the remote version is greater than the local this will break and set NEEDS_UPGRADE flag
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if [[ ${local_versions[$i]} -lt ${remote_versions[$i]} ]]; then
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ACTION=UPGRADE
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break
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fi
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done
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fi
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case $ACTION in
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INSTALL)
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do_install
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;;
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UPGRADE)
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do_upgrade
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;;
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esac
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# END: Work
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# BEGIN: End Work Check
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## If discord isn't already setup, go ahead and mark it for install/update
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if [[ ! -f $INSTALLED_DESKTOP_FILE ]]; then
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log "Desktop file not found in the local applications dir ($LOCAL_APPLICATION_DIR) installing now"
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DESKTOP_FILE_NEEDS_UPDATE=1
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else
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# If there is a change for any reason update it
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if [[ "$(<$DESKTOP_FILE)" != "$(<$INSTALLED_DESKTOP_FILE)" ]]; then
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log "Desktop file for new version of discord has changed. Updating the existing installation"
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DESKTOP_FILE_NEEDS_UPDATE=1
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fi
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fi
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if [[ $DESKTOP_FILE_NEEDS_UPDATE -eq 1 ]]; then
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log "Updating/Installing desktop file"
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desktop-file-install --dir=$LOCAL_APPLICATION_DIR $DESKTOP_FILE
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if [[ $? -ne 0 ]]; then
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log "There was an issue with installtion"
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else
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log "Desktop file was successfully installed"
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fi
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fi
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# END: End Work Check
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