ImranR98 · March 23, 2023 06:33 · klascano · Nov 23, 2021 · ImranR98 · Nov 23, 2021
diff --git a/eOSUDS.sh b/eOSUDS.sh
 #!/usr/bin/bash


 # =======================================
 # eOS-Universal-Dark-Style
 # =======================================

 # elementaryOS 6 has great dark themes, but they only apply to "curated" appcenter apps
 # This script forces the system theme to work with regular Debian packages as well as non-curated Flatpak apps
 # It also optionally changes the wallpaper based on the theme
 # It also supports changing themes for the Mailspring email app (both .deb and Snap versions)


 # =======================================
 # Instructions
 # =======================================

 # 1. Save this script and make it executable
 # 2. Change the configuration variables below as needed
 # 3. Use a cron job to run the script automatically on a desired schedule; you can learn about cron by running `man crontab` in a terminal
 #    Note that system updates can reset the forced Flatpak theming, so running the script frequently (every few minutes) is recommended

 # =======================================
 # Configuration
 # =======================================

 LIGHT_THEME_WALLPAPER='/usr/share/backgrounds/odin.jpg' # Leave empty to disable wallpaper switching on light theme
 DARK_THEME_WALLPAPER='/usr/share/backgrounds/odin-dark.jpg' # Leave empty to disable wallpaper switching on dark theme
 MAILSPRING_LIGHT_THEME='ui-light' # Leave empty to disable Mailspring theme switching on light theme
 MAILSPRING_DARK_THEME='ui-dark' # Leave empty to disable Mailspring theme switching on dark theme
 SHOW_DEBUG_MESSAGES=0 # If debug logs should be printed, set to 1


 # =======================================
 # Script functions
 # =======================================

 # Echoes provided string with a date prefix. If $2 is 1, redirects to stderr with ERROR prefix. If $3 is 1, echoes a crash message to stderr and exits with code 1
 # If $4 is 1, the message is treated as a debug log (only shown if the relevant configuration variable above is set)
 log() {
 	if [ "$2" == 1 ]; then
 		echo -e "ERROR: $(date): $1" >&2
 	elif [ "$4" == 1 ]; then
 		if [ "$SHOW_DEBUG_MESSAGES" == 1 ]; then
 			echo -e "DEBUG: $(date): $1"
 		fi
 	else
 		echo -e "MESSG: $(date): $1"
 	fi
 	if [ "$3" == 1 ]; then
 		echo -e "CRASHED." >&2
 		exit 1
 	fi

 }

 # Echoes 1 if the system dark style is set, 0 otherwise
 getSystemDarkStylePref() {
 	[ "$(gsettings get org.freedesktop prefers-color-scheme)" = "'dark'" ] && echo 1 || echo 0
 }

 # Changes the universal GTK dark theme preference based on the provided argument (if they are different)
 changeGTKUniversalDarkPrefIfNeeded() {
 	# Ensure the provided argument is valid before making the change
 	[ "$1" == 0 ] || [ "$1" == 1 ] || log "GTK universal dark preference can only be set to 0 or 1" 1 1
 	# The location of the universal GTK dark preference config file
 	GTK_UNIVERSAL_PREF_FILE=~/.config/gtk-3.0/settings.ini
 	# Ensure the file exists (if not, create it)
 	if [ ! -f "$GTK_UNIVERSAL_PREF_FILE" ]; then
 		echo -e '[Settings]\ngtk-application-prefer-dark-theme=1\n' > "$GTK_UNIVERSAL_PREF_FILE"
 	fi
 	# Grab the pref
 	GTK_UNIVERSAL_PREF_IS_DARK="$(cat "$GTK_UNIVERSAL_PREF_FILE" | grep -o [0-1])"
 	# Ensure it is 0 or 1; if not, log the error and exit
 	[ "$GTK_UNIVERSAL_PREF_IS_DARK" == 0 ] || [ "$GTK_UNIVERSAL_PREF_IS_DARK" == 1 ] || log "$GTK_UNIVERSAL_PREF_FILE is not valid" 1 1
 	# If needed, make the change
 	if [ "$GTK_UNIVERSAL_PREF_IS_DARK" != "$1" ]; then
 		sed -i "s/gtk-application-prefer-dark-theme=.*/gtk-application-prefer-dark-theme=$1/" "$GTK_UNIVERSAL_PREF_FILE"
 		log "GTK universal dark preference has been set to $1"
 	else
 		log "GTK universal dark preference is already $1, no changes made" 0 0 1
 	fi
 }

 # Changes the wallpaper to the one given in the argument (if not already set)
 # If the argument is empty, does nothing (does NOT throw an error)
 changeWallpaperIfNeeded() {
 	if [ ! -z "$1" ]; then
 		CURRENT_WALLPAPER="$(gsettings get org.gnome.desktop.background picture-uri | head -c -2 | tail -c +9)"
 		if [ "$CURRENT_WALLPAPER" != "$1" ]; then
 			# This if statement allows the wallpaper change to work even when running from a cron job
 			if [ -z "$DBUS_SESSION_BUS_ADDRESS" ]; then
 				PID=$(pgrep gnome-session)
 				export DBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS /proc/$PID/environ | tr '\0' '\n' | cut -d= -f2-)
 			fi
 			gsettings set org.gnome.desktop.background picture-uri file://"$1"
 			log "Wallpaper has been set to $1"
 		else
 			log "Wallpaper is already $1, no changes made" 0 0 1
 		fi
 	else
 		log "Wallpaper argument is empty, no changes made" 0 0 1
 	fi
 }

 # Changes the Mailspring theme to the provided string if a Mailspring config can be found (indicating it is installed)
 # If not installed or if no theme provided, does nothing (does NOT throw an error)
 # Warning: This abruptly kills the Mailspring process and restarts it in the background
 changeMailSpringThemeIfNeeded() {
 	if [ ! -z "$1" ]; then
 		MAILSPRING_CONFIG_FILE=~/.config/Mailspring/config.json
 		if [ ! -f "$MAILSPRING_CONFIG_FILE" ]; then	MAILSPRING_CONFIG_FILE=~/snap/mailspring/common/config.json; fi
 		if [ -f "$MAILSPRING_CONFIG_FILE" ] && [ ! -z "$1" ]; then
 			CURRENT_MAILSPRING_THEME="$(cat "$MAILSPRING_CONFIG_FILE" | grep \"theme\": | tr -d ' ' | tail -c +10 | head -c -3)"
 			if [ "$CURRENT_MAILSPRING_THEME" != "$1" ]; then
 				sed -i "s/\"theme\":.*/\"theme\": \"$1\",/g" "$MAILSPRING_CONFIG_FILE"
 				log "Mailspring theme has been set to $1"
 				pkill -f mailspring > /dev/null 2>&1
 				log "Mailspring process has been killed"
 				mailspring -b </dev/null &>/dev/null &
 				log "Mailspring process has been started in background"
 			else
 				log "Mailspring theme is already $1, no changes made" 0 0 1
 			fi
 		else
 			log "Mailspring not installed, no changes made" 0 0 1
 		fi
 	else
 		log "Mailspring theme argument is empty, no changes made" 0 0 1
 	fi
 }

 # First, installs the current system theme into the Flatpak runtimes used by all non-curated (non-appcenter) apps (if not already installed)
 # If the current theme is an elementary theme (io.elementary.stylesheet.*) and if the $1 argument is 1, it makes these changes before installing the theme:
 # - Renames it by adding a -dark suffix
 # - Modifies it so the default stylesheet is dark themed; this is needed as elementary themes do not have traditional separate dark variants
 # Then, forces all the apps to use the current theme by adding an environment variable override (if not already set)
 changeNonElementaryFlatpakThemesIfNeeded() {
 	# The location of Flatpak runtimes
 	FLATPAK_RUNTIME_DIR=~/.local/share/flatpak/runtime
 	# Where themes are stored in a Flatpak runtime
 	RUNTIME_THEME_SUBDIR='active/files/share/themes'
 	# Grab the current system theme
 	THEME="$(gsettings get org.gnome.desktop.interface gtk-theme | head -c -2 | tail -c +2)"
 	# Set the variable that indicates whether to add the '-dark' prefix to the theme based on the $1 argument and whether the current theme is an elementary one
 	USE_CUSTOM_ELEMENTARY_DARK="$([ "$1" == 1 ] && [ ! -z "$(echo "$THEME" | grep -e "^io\.elementary\.stylesheet\..*")" ] && echo 1 || echo 0)"
 	# Grab the list of app IDs for all non-appcenter installed Flatpaks
 	TARGET_APP_IDS=($(flatpak list --columns=application,origin,runtime | awk -F "\t" '{if ($2 != "appcenter"  && $3 != "") print $1}'))
 	# For each target app ID...
 	for APP_ID in "${TARGET_APP_IDS[@]}"; do
 		# Grab the appropriate Flatpak runtime
 		RUNTIME="$(flatpak info --show-runtime "$APP_ID")"
 		# Ensure the runtime has a theme directory
 		RUNTIME_THEME_DIR="$FLATPAK_RUNTIME_DIR"/"$RUNTIME"/"$RUNTIME_THEME_SUBDIR"
 		if [ ! -d "$RUNTIME_THEME_DIR" ]; then mkdir -p "$RUNTIME_THEME_DIR"; fi
 		# Check to see if the current theme (or the current theme plus the '-dark' suffix if needed) is already installed in the runtime
 		THEME_IN_RUNTIME_SEARCH_RESULT="$([ "$USE_CUSTOM_ELEMENTARY_DARK" -eq 1 ] && echo "$(ls "$RUNTIME_THEME_DIR" | grep "$THEME"-dark)" || echo "$(ls "$RUNTIME_THEME_DIR" | grep "$THEME")")"
 		# If not, find where the theme is stored (in the system or user directory) and copy it into the runtime theme folder
 		# Add '-dark' suffix to it if needed and make the necessary changes
 		if [ -z "$THEME_IN_RUNTIME_SEARCH_RESULT" ]; then
 			# Find where the theme is stored
 			TARGET_THEME_LOCATION=''
 			POSSIBLE_THEME_LOCATIONS=(/usr/share/themes ~/.local/share/themes)
 			for LOCATION in "${POSSIBLE_THEME_LOCATIONS[@]}"; do
 				if [ ! -z "$(ls "$LOCATION" | grep -e ^"$THEME"$)" ]; then TARGET_THEME_LOCATION="$LOCATION"/"$THEME"; fi
 			done
 			[ ! -z "$TARGET_THEME_LOCATION" ] || log "Location of the currently set theme - $THEME - could not be found" 1 1
 			# If there is not need to make the '-dark' modifications, copy the theme into the Flatpak runtime; else, modify it in a temporary directory first, then copy it
 			if [ ! "$USE_CUSTOM_ELEMENTARY_DARK" -eq 1 ]; then
 				cp -r "$TARGET_THEME_LOCATION" "$RUNTIME_THEME_DIR"
 				log "$THEME theme has been installed into $RUNTIME Flatpak runtime"
 			else
 				TEMP_DIR="$(mktemp -d)"
 				cp -r "$TARGET_THEME_LOCATION" "$TEMP_DIR"
 				cp -r "$TEMP_DIR"/"$THEME" "$TEMP_DIR"/"$THEME"-dark
 				mv "$TEMP_DIR"/"$THEME"-dark/plank "$TEMP_DIR"/"$THEME"-dark/plank-light
 				mv "$TEMP_DIR"/"$THEME"-dark/plank-dark "$TEMP_DIR"/"$THEME"-dark/plank
 				mv "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk.css "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk-light.css
 				mv "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk-dark.css "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk.css
 				cp -r "$TEMP_DIR"/"$THEME"-dark "$RUNTIME_THEME_DIR"
 				rm -r "$TEMP_DIR"
 				log "$THEME theme has been modified to $THEME-dark and installed into $RUNTIME Flatpak runtime"
 			fi
 		else
 			log "$THEME theme is already installed in the $RUNTIME Flatpak runtime, no changes made" 0 0 1
 		fi
 		# Now that the theme is installed, do the override if needed
 		CURRENT_APP_THEME="$(flatpak override --user --show "$APP_ID" | grep GTK_THEME= | tail -c +11)"
 		FINAL_OVERRIDE_THEME_NAME="$([ "$USE_CUSTOM_ELEMENTARY_DARK" == 1 ] && echo "$(echo "$THEME" | head -c -1 | tail -c +1)-dark" || echo "$THEME")"
 		if [ "$CURRENT_APP_THEME" != "$FINAL_OVERRIDE_THEME_NAME" ]; then
 			flatpak override --user --env=GTK_THEME="$FINAL_OVERRIDE_THEME_NAME" "$APP_ID"
 			log "Flatpak environment variable override 'GTK_THEME=$FINAL_OVERRIDE_THEME_NAME' has been added for $APP_ID"
 		else
 			log "Flatpak environment variable override 'GTK_THEME=$FINAL_OVERRIDE_THEME_NAME' is already set for $APP_ID, no changes made" 0 0 1
 		fi
 	done
 }


 # =======================================
 # Actual execution
 # =======================================

 # 1. Change the universal GTK dark theme preference if needed
 # 2. Change the wallpaper if needed
 # 3. Change the Mailspring theme if needed
 # 4. Change the theme of all non-elementary Flatpak apps if needed 

 SYSTEM_DARK_PREF="$(getSystemDarkStylePref)"
 changeGTKUniversalDarkPrefIfNeeded "$SYSTEM_DARK_PREF"
 changeWallpaperIfNeeded "$([ "$SYSTEM_DARK_PREF" == 1 ] && echo "$DARK_THEME_WALLPAPER" || echo "$LIGHT_THEME_WALLPAPER")"
 changeMailSpringThemeIfNeeded "$([ "$SYSTEM_DARK_PREF" == 1 ] && echo "$MAILSPRING_DARK_THEME" || echo "$MAILSPRING_LIGHT_THEME")"
 changeNonElementaryFlatpakThemesIfNeeded "$SYSTEM_DARK_PREF"
	#!/usr/bin/bash


	# =======================================
	# eOS-Universal-Dark-Style
	# =======================================

	# elementaryOS 6 has great dark themes, but they only apply to "curated" appcenter apps
	# This script forces the system theme to work with regular Debian packages as well as non-curated Flatpak apps
	# It also optionally changes the wallpaper based on the theme
	# It also supports changing themes for the Mailspring email app (both .deb and Snap versions)


	# =======================================
	# Instructions
	# =======================================

	# 1. Save this script and make it executable
	# 2. Change the configuration variables below as needed
	# 3. Use a cron job to run the script automatically on a desired schedule; you can learn about cron by running `man crontab` in a terminal
	# Note that system updates can reset the forced Flatpak theming, so running the script frequently (every few minutes) is recommended

	# =======================================
	# Configuration
	# =======================================

	LIGHT_THEME_WALLPAPER='/usr/share/backgrounds/odin.jpg' # Leave empty to disable wallpaper switching on light theme
	DARK_THEME_WALLPAPER='/usr/share/backgrounds/odin-dark.jpg' # Leave empty to disable wallpaper switching on dark theme
	MAILSPRING_LIGHT_THEME='ui-light' # Leave empty to disable Mailspring theme switching on light theme
	MAILSPRING_DARK_THEME='ui-dark' # Leave empty to disable Mailspring theme switching on dark theme
	SHOW_DEBUG_MESSAGES=0 # If debug logs should be printed, set to 1


	# =======================================
	# Script functions
	# =======================================

	# Echoes provided string with a date prefix. If $2 is 1, redirects to stderr with ERROR prefix. If $3 is 1, echoes a crash message to stderr and exits with code 1
	# If $4 is 1, the message is treated as a debug log (only shown if the relevant configuration variable above is set)
	log() {
	if [ "$2" == 1 ]; then
	echo -e "ERROR: $(date): $1" >&2
	elif [ "$4" == 1 ]; then
	if [ "$SHOW_DEBUG_MESSAGES" == 1 ]; then
	echo -e "DEBUG: $(date): $1"
	fi
	else
	echo -e "MESSG: $(date): $1"
	fi
	if [ "$3" == 1 ]; then
	echo -e "CRASHED." >&2
	exit 1
	fi

	}

	# Echoes 1 if the system dark style is set, 0 otherwise
	getSystemDarkStylePref() {
	[ "$(gsettings get org.freedesktop prefers-color-scheme)" = "'dark'" ] && echo 1 \|\| echo 0
	}

	# Changes the universal GTK dark theme preference based on the provided argument (if they are different)
	changeGTKUniversalDarkPrefIfNeeded() {
	# Ensure the provided argument is valid before making the change
	[ "$1" == 0 ] \|\| [ "$1" == 1 ] \|\| log "GTK universal dark preference can only be set to 0 or 1" 1 1
	# The location of the universal GTK dark preference config file
	GTK_UNIVERSAL_PREF_FILE=~/.config/gtk-3.0/settings.ini
	# Ensure the file exists (if not, create it)
	if [ ! -f "$GTK_UNIVERSAL_PREF_FILE" ]; then
	echo -e '[Settings]\ngtk-application-prefer-dark-theme=1\n' > "$GTK_UNIVERSAL_PREF_FILE"
	fi
	# Grab the pref
	GTK_UNIVERSAL_PREF_IS_DARK="$(cat "$GTK_UNIVERSAL_PREF_FILE" \| grep -o [0-1])"
	# Ensure it is 0 or 1; if not, log the error and exit
	[ "$GTK_UNIVERSAL_PREF_IS_DARK" == 0 ] \|\| [ "$GTK_UNIVERSAL_PREF_IS_DARK" == 1 ] \|\| log "$GTK_UNIVERSAL_PREF_FILE is not valid" 1 1
	# If needed, make the change
	if [ "$GTK_UNIVERSAL_PREF_IS_DARK" != "$1" ]; then
	sed -i "s/gtk-application-prefer-dark-theme=.*/gtk-application-prefer-dark-theme=$1/" "$GTK_UNIVERSAL_PREF_FILE"
	log "GTK universal dark preference has been set to $1"
	else
	log "GTK universal dark preference is already $1, no changes made" 0 0 1
	fi
	}

	# Changes the wallpaper to the one given in the argument (if not already set)
	# If the argument is empty, does nothing (does NOT throw an error)
	changeWallpaperIfNeeded() {
	if [ ! -z "$1" ]; then
	CURRENT_WALLPAPER="$(gsettings get org.gnome.desktop.background picture-uri \| head -c -2 \| tail -c +9)"
	if [ "$CURRENT_WALLPAPER" != "$1" ]; then
	# This if statement allows the wallpaper change to work even when running from a cron job
	if [ -z "$DBUS_SESSION_BUS_ADDRESS" ]; then
	PID=$(pgrep gnome-session)
	export DBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS /proc/$PID/environ \| tr '\0' '\n' \| cut -d= -f2-)
	fi
	gsettings set org.gnome.desktop.background picture-uri file://"$1"
	log "Wallpaper has been set to $1"
	else
	log "Wallpaper is already $1, no changes made" 0 0 1
	fi
	else
	log "Wallpaper argument is empty, no changes made" 0 0 1
	fi
	}

	# Changes the Mailspring theme to the provided string if a Mailspring config can be found (indicating it is installed)
	# If not installed or if no theme provided, does nothing (does NOT throw an error)
	# Warning: This abruptly kills the Mailspring process and restarts it in the background
	changeMailSpringThemeIfNeeded() {
	if [ ! -z "$1" ]; then
	MAILSPRING_CONFIG_FILE=~/.config/Mailspring/config.json
	if [ ! -f "$MAILSPRING_CONFIG_FILE" ]; then MAILSPRING_CONFIG_FILE=~/snap/mailspring/common/config.json; fi
	if [ -f "$MAILSPRING_CONFIG_FILE" ] && [ ! -z "$1" ]; then
	CURRENT_MAILSPRING_THEME="$(cat "$MAILSPRING_CONFIG_FILE" \| grep \"theme\": \| tr -d ' ' \| tail -c +10 \| head -c -3)"
	if [ "$CURRENT_MAILSPRING_THEME" != "$1" ]; then
	sed -i "s/\"theme\":.*/\"theme\": \"$1\",/g" "$MAILSPRING_CONFIG_FILE"
	log "Mailspring theme has been set to $1"
	pkill -f mailspring > /dev/null 2>&1
	log "Mailspring process has been killed"
	mailspring -b </dev/null &>/dev/null &
	log "Mailspring process has been started in background"
	else
	log "Mailspring theme is already $1, no changes made" 0 0 1
	fi
	else
	log "Mailspring not installed, no changes made" 0 0 1
	fi
	else
	log "Mailspring theme argument is empty, no changes made" 0 0 1
	fi
	}

	# First, installs the current system theme into the Flatpak runtimes used by all non-curated (non-appcenter) apps (if not already installed)
	# If the current theme is an elementary theme (io.elementary.stylesheet.*) and if the $1 argument is 1, it makes these changes before installing the theme:
	# - Renames it by adding a -dark suffix
	# - Modifies it so the default stylesheet is dark themed; this is needed as elementary themes do not have traditional separate dark variants
	# Then, forces all the apps to use the current theme by adding an environment variable override (if not already set)
	changeNonElementaryFlatpakThemesIfNeeded() {
	# The location of Flatpak runtimes
	FLATPAK_RUNTIME_DIR=~/.local/share/flatpak/runtime
	# Where themes are stored in a Flatpak runtime
	RUNTIME_THEME_SUBDIR='active/files/share/themes'
	# Grab the current system theme
	THEME="$(gsettings get org.gnome.desktop.interface gtk-theme \| head -c -2 \| tail -c +2)"
	# Set the variable that indicates whether to add the '-dark' prefix to the theme based on the $1 argument and whether the current theme is an elementary one
	USE_CUSTOM_ELEMENTARY_DARK="$([ "$1" == 1 ] && [ ! -z "$(echo "$THEME" \| grep -e "^io\.elementary\.stylesheet\..*")" ] && echo 1 \|\| echo 0)"
	# Grab the list of app IDs for all non-appcenter installed Flatpaks
	TARGET_APP_IDS=($(flatpak list --columns=application,origin,runtime \| awk -F "\t" '{if ($2 != "appcenter" && $3 != "") print $1}'))
	# For each target app ID...
	for APP_ID in "${TARGET_APP_IDS[@]}"; do
	# Grab the appropriate Flatpak runtime
	RUNTIME="$(flatpak info --show-runtime "$APP_ID")"
	# Ensure the runtime has a theme directory
	RUNTIME_THEME_DIR="$FLATPAK_RUNTIME_DIR"/"$RUNTIME"/"$RUNTIME_THEME_SUBDIR"
	if [ ! -d "$RUNTIME_THEME_DIR" ]; then mkdir -p "$RUNTIME_THEME_DIR"; fi
	# Check to see if the current theme (or the current theme plus the '-dark' suffix if needed) is already installed in the runtime
	THEME_IN_RUNTIME_SEARCH_RESULT="$([ "$USE_CUSTOM_ELEMENTARY_DARK" -eq 1 ] && echo "$(ls "$RUNTIME_THEME_DIR" \| grep "$THEME"-dark)" \|\| echo "$(ls "$RUNTIME_THEME_DIR" \| grep "$THEME")")"
	# If not, find where the theme is stored (in the system or user directory) and copy it into the runtime theme folder
	# Add '-dark' suffix to it if needed and make the necessary changes
	if [ -z "$THEME_IN_RUNTIME_SEARCH_RESULT" ]; then
	# Find where the theme is stored
	TARGET_THEME_LOCATION=''
	POSSIBLE_THEME_LOCATIONS=(/usr/share/themes ~/.local/share/themes)
	for LOCATION in "${POSSIBLE_THEME_LOCATIONS[@]}"; do
	if [ ! -z "$(ls "$LOCATION" \| grep -e ^"$THEME"$)" ]; then TARGET_THEME_LOCATION="$LOCATION"/"$THEME"; fi
	done
	[ ! -z "$TARGET_THEME_LOCATION" ] \|\| log "Location of the currently set theme - $THEME - could not be found" 1 1
	# If there is not need to make the '-dark' modifications, copy the theme into the Flatpak runtime; else, modify it in a temporary directory first, then copy it
	if [ ! "$USE_CUSTOM_ELEMENTARY_DARK" -eq 1 ]; then
	cp -r "$TARGET_THEME_LOCATION" "$RUNTIME_THEME_DIR"
	log "$THEME theme has been installed into $RUNTIME Flatpak runtime"
	else
	TEMP_DIR="$(mktemp -d)"
	cp -r "$TARGET_THEME_LOCATION" "$TEMP_DIR"
	cp -r "$TEMP_DIR"/"$THEME" "$TEMP_DIR"/"$THEME"-dark
	mv "$TEMP_DIR"/"$THEME"-dark/plank "$TEMP_DIR"/"$THEME"-dark/plank-light
	mv "$TEMP_DIR"/"$THEME"-dark/plank-dark "$TEMP_DIR"/"$THEME"-dark/plank
	mv "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk.css "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk-light.css
	mv "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk-dark.css "$TEMP_DIR"/"$THEME"-dark/gtk-3.0/gtk.css
	cp -r "$TEMP_DIR"/"$THEME"-dark "$RUNTIME_THEME_DIR"
	rm -r "$TEMP_DIR"
	log "$THEME theme has been modified to $THEME-dark and installed into $RUNTIME Flatpak runtime"
	fi
	else
	log "$THEME theme is already installed in the $RUNTIME Flatpak runtime, no changes made" 0 0 1
	fi
	# Now that the theme is installed, do the override if needed
	CURRENT_APP_THEME="$(flatpak override --user --show "$APP_ID" \| grep GTK_THEME= \| tail -c +11)"
	FINAL_OVERRIDE_THEME_NAME="$([ "$USE_CUSTOM_ELEMENTARY_DARK" == 1 ] && echo "$(echo "$THEME" \| head -c -1 \| tail -c +1)-dark" \|\| echo "$THEME")"
	if [ "$CURRENT_APP_THEME" != "$FINAL_OVERRIDE_THEME_NAME" ]; then
	flatpak override --user --env=GTK_THEME="$FINAL_OVERRIDE_THEME_NAME" "$APP_ID"
	log "Flatpak environment variable override 'GTK_THEME=$FINAL_OVERRIDE_THEME_NAME' has been added for $APP_ID"
	else
	log "Flatpak environment variable override 'GTK_THEME=$FINAL_OVERRIDE_THEME_NAME' is already set for $APP_ID, no changes made" 0 0 1
	fi
	done
	}


	# =======================================
	# Actual execution
	# =======================================

	# 1. Change the universal GTK dark theme preference if needed
	# 2. Change the wallpaper if needed
	# 3. Change the Mailspring theme if needed
	# 4. Change the theme of all non-elementary Flatpak apps if needed

	SYSTEM_DARK_PREF="$(getSystemDarkStylePref)"
	changeGTKUniversalDarkPrefIfNeeded "$SYSTEM_DARK_PREF"
	changeWallpaperIfNeeded "$([ "$SYSTEM_DARK_PREF" == 1 ] && echo "$DARK_THEME_WALLPAPER" \|\| echo "$LIGHT_THEME_WALLPAPER")"
	changeMailSpringThemeIfNeeded "$([ "$SYSTEM_DARK_PREF" == 1 ] && echo "$MAILSPRING_DARK_THEME" \|\| echo "$MAILSPRING_LIGHT_THEME")"
	changeNonElementaryFlatpakThemesIfNeeded "$SYSTEM_DARK_PREF"