#!/bin/bash

#add more paths for different foundry instances
instances=(
    "/home/ubuntu/foundryuserdata-joseph|foundry-joseph"
)

BACKUP_ROOT="/home/ubuntu/backups"
RCLONE_REMOTE="googledrive:FoundryBackups"
RETENTION_DAYS_LOCAL=7
RETENTION_DAYS_REMOTE=30

DATE=$(date +%Y-%m-%d_%H%M)

for ENTRY in "${instances[@]}"; do
    
    SOURCE_DIR="${ENTRY%%|*}"
    PM2_NAME="${ENTRY##*|}"
    
    FOLDER_NAME=$(basename "$SOURCE_DIR")
    BACKUP_DIR="$BACKUP_ROOT/$FOLDER_NAME"
    FILENAME="$FOLDER_NAME-backup-$DATE.tar.gz"

    mkdir -p "$BACKUP_DIR"

    echo "Processing: $PM2_NAME (Folder: $FOLDER_NAME)"

    echo "Stopping PM2 process: $PM2_NAME..."
    pm2 stop "$PM2_NAME"

    echo "Zipping files..."
    tar -czf "$BACKUP_DIR/$FILENAME" -C "$SOURCE_DIR" .
    TAR_EXIT_CODE=$?

    echo "Restarting PM2 process: $PM2_NAME..."
    pm2 start "$PM2_NAME"

    if [ $TAR_EXIT_CODE -eq 0 ]; then
        echo "Local backup successful: $FILENAME"
        
        echo "Uploading to Google Drive..."
        rclone copy "$BACKUP_DIR/$FILENAME" "$RCLONE_REMOTE/$FOLDER_NAME" --transfers=4 --checkers=8

        echo "Cleaning remote old files..."
        rclone delete "$RCLONE_REMOTE/$FOLDER_NAME" --min-age ${RETENTION_DAYS_REMOTE}d
    else
        echo "BACKUP FAILED for $FOLDER_NAME "
    fi

    echo "Cleaning local old files..."
    find "$BACKUP_DIR" -type f -name "*.tar.gz" -mtime +$RETENTION_DAYS_LOCAL -delete

done

echo "All backup tasks completed."