#!/bin/bash

# Define backup directory on your local machine
BACKUP_DIR="/path/to/your/backups"
WEEKLY_DIR="$BACKUP_DIR/weekly"

# Run the backup script
ssh server /root/backup/script.sh
scp server:/root/backup/backup_$(date +"%Y%m%d").tar "$BACKUP_DIR"
ssh server rm /root/backup/backup_$(date +"%Y%m%d").tar

# Keep only the last 7 daily backups
find "$BACKUP_DIR" -maxdepth 1 -name "backup_*.tar" -type f -mtime +6 -exec rm {} \;

# Weekly backup: Every Sunday, move the daily backup to a weekly folder
if [ "$(date +%u)" -eq 7 ]; then
    mkdir -p "$WEEKLY_DIR"
    cp "$BACKUP_DIR/backup_$(date +"%Y%m%d").tar" "$WEEKLY_DIR/weekly_$(date +"%Y%m%d").tar"

    # Enforce 100 GB limit for weekly backups
    while true; do
        TOTAL_SIZE=$(du -s "$WEEKLY_DIR" | awk '{print $1}')
        if [ "$TOTAL_SIZE" -le 102400 ]; then  # 100 GB in KB
            break
        fi
        # Find and remove the oldest weekly backup
        OLDEST_FILE=$(ls -t "$WEEKLY_DIR" | tail -1)
        if [ -n "$OLDEST_FILE" ]; then
            rm "$WEEKLY_DIR/$OLDEST_FILE"
        fi
    done
fi