Fixes texture corruption in VS Code terminal after resuming from suspend

vscode-fix.sh

#!/bin/bash

# Fixes texture corruption in VS Code terminal after resuming from suspend.
#
# Place script in /lib/systemd/system-sleep/ so it can run after resuming.
#
# Dependencies: jq


case "$1" in
    post)
        # Check if VS Code is running
        if [ -z "$(pgrep -x code)" ]; then
            exit 0
        fi

        user=$(cut -d " " -f 1 <<< $(users))
        settings_file="/home/$user/.config/Code/User/settings.json"

        # Check if settings file is a symlink
        if [ -L "$settings_file" ]; then
            settings_link=$settings_file
            settings_file=$(readlink $settings_file)
        fi

        # Create backup of settings
        backup_file="/home/$user/.config/Code/User/settings.json.bak"
        if [ ! -e "$backup_file" ]; then
            cp $settings_file $backup_file
        fi

        # Before overwriting, ensure settings file is not truncated from errors
        tmp_file='/tmp/settings.json'
        overwrite() {
            local tmp_file_lines=$(wc -l $tmp_file | cut -d " " -f 1)
            if [ "$tmp_file_lines" -le 1 ]; then
                rm $tmp_file
                exit 1
            else
                chown $user:$user $tmp_file
                mv $tmp_file $settings_file

                if [ ! -z ${settings_link+x} ]; then
                    touch -h $settings_link
                fi
            fi
        }

        # Wait for screen unlock
        tail -f /var/log/auth.log -n 1 | sed '/unlocked login keyring/ q;/Power key pressed/ q'

        # Get current zoom level
        zoom_level=$(jq '.["window.zoomLevel"]' $settings_file)

        # Add missing key if required
        if [ "$zoom_level" = "null" ]; then
            jq '. + { "window.zoomLevel": 0 }' $settings_file > $tmp_file
            overwrite
        fi

        # Change zoom level
        let zoom_level++
        jq '.["window.zoomLevel"] = $zoom' --argjson zoom $zoom_level \
        $settings_file > $tmp_file
        overwrite

        sleep 0.5

        let zoom_level--
        jq '.["window.zoomLevel"] = $zoom' --argjson zoom $zoom_level \
        $settings_file > $tmp_file
        overwrite
        ;;
esac

@stephan-t I've noticed one other thing that I've corrected in my version of the script. Users who assign their power button to pm-hibernate never have to "re-login", and thus nothing shows up in the Auth log. So the tail command just runs forever. The fix is this line in my version if it helps: https://gist.github.com/Fmstrat/7de01996206537b9dbc8f673b2c5ced2#file-vscode-texture-fix-sh-L20

Good catch @Fmstrat, thank you. I've updated my script to include that as well.