motortown_backup.sh

#!/bin/bash

# Colors
RED="\e[0;91m"
GREEN="\e[0;92m"
YELLOW="\e[0;93m"
NC="\e[0m"

# CHANGE ME
saveDir="/opt/games/steam/steamapps/compatdata/1369670/pfx/drive_c/users/steamuser/AppData/Local/MotorTown/Saved/SaveGames"
backupDir="/data/backup/savegames/Motor Town"
maxSaves=10
dateString=$(date +"%Y-%m-%d_%H-%M")

if [[ ! -d "$backupDir" ]]; then
    mkdir "$backupDir"
    if [[ ! -d "$backupDir" ]]; then
        echo "Error creating backup directory: $backupDir"
        exit 1
    fi
fi

cd "$saveDir" || exit 1

for folder in Characters Worlds; do
    mkdir -p "${backupDir}/${folder}"
done

# Characters
folder=Characters
cd $folder
echo "Backing up ${folder}..."
saves=(*.sav)

for save in "${saves[@]}"; do
    if [[ -f "$save" ]]; then
        #echo -e "${YELLOW}Checking hash:${NC} ${save}"
        save_hash=$(md5sum "$save" | cut -d' ' -f1)
        backup_file=$(ls "${backupDir}/${folder}/" | grep "${save}-" 2>/dev/null | tail -n1)
        backup="${backupDir}/${folder}/${backup_file}"
        backup_hash=""

        if [[ -n "$backup" ]]; then
            #echo -e "${YELLOW}Checking hash:${NC} $(basename "${backup}")"
            backup_hash=$(md5sum "$backup" | cut -d' ' -f1)
        fi

        #echo save: $save
        #echo backup: $backup
        #echo save_hash: $save_hash
        #echo backup_hash: $backup_hash

        if [[ "$backup_hash" == "$save_hash" ]]; then
            echo -e "${GREEN}$save matches latest backup, no backup needed${NC}"
        else
            cp "$save" "${backupDir}/${folder}/${save}-${dateString}"
            RET=$?
            if [[ $RET -eq 0 ]]; then
                echo -e "${YELLOW}Copied $save to ${backupDir}/${folder}/${save}-${dateString}${NC}"
            else
                echo -e "${RED}Error! cp returned $RET for $save${NC}"
            fi
        fi

        count=$(ls "${backupDir}/${folder}/" | grep -c "${save}-")
        if [[ $count -gt $maxSaves ]]; then
            let trim=($count - $maxSaves)
            if [[ $trim -gt 0 ]]; then
                echo "Cleaning up $trim old backups for $save"
                ls "${backupDir}/${folder}/" | grep "${save}-" | tail -n $trim | xargs -I SAVE rm "${backupDir}/${folder}/SAVE"
            fi
        fi
    fi
done
cd ..

# Worlds
folder=Worlds
cd $folder
echo "Backing up ${folder}..."
worlds="$(ls -l | awk '/^d/ {print $NF}')"
for world in "${worlds[@]}"; do
    mkdir -p "${backupDir}/Worlds/${world}"
    echo World: $world
    cd $world
    saves=(*.world)

    for save in "${saves[@]}"; do
        if [[ -f "$save" ]]; then
            #echo -e "${YELLOW}Checking hash:${NC} ${save}"
            save_hash=$(md5sum "$save" | cut -d' ' -f1)
            backup_file=$(ls "${backupDir}/${folder}/${world}/" | grep "${save}-" 2>/dev/null | tail -n1)
            backup="${backupDir}/${folder}/${world}/${backup_file}"
            backup_hash=""

            if [[ -n "$backup" ]]; then
                #echo -e "${YELLOW}Checking hash:${NC} $(basename "${backup}")"
                backup_hash=$(md5sum "$backup" | cut -d' ' -f1)
            fi

            #cho save: $save
            #echo backup: $backup
            #echo save_hash: $save_hash
            #echo backup_hash: $backup_hash

            if [[ "$backup_hash" == "$save_hash" ]]; then
                echo -e "${GREEN}$save matches latest backup, no backup needed${NC}"
            else
                cp "$save" "${backupDir}/${folder}/${world}/${save}-${dateString}"
                RET=$?
                if [[ $RET -eq 0 ]]; then
                    echo -e "${YELLOW}Copied $save to ${backupDir}/${folder}/${world}/${save}-${dateString}${NC}"
                else
                    echo -e "${RED}Error! cp returned $RET for $save${NC}"
                fi
            fi

            count=$(ls "${backupDir}/${folder}/${world}/" | grep -c "${save}-")
            if [[ $count -gt $maxSaves ]]; then
                let trim=($count - $maxSaves)
                if [[ $trim -gt 0 ]]; then
                    echo "Cleaning up $trim old backups for $save"
                    ls "${backupDir}/${folder}/${world}/" | grep "${save}-" | tail -n $trim | xargs -I SAVE rm "${backupDir}/${folder}/${world}/SAVE"
                fi
            fi
        fi
    done
    cd ..
done