#!/bin/bash

# Set the target size for camera folders in GB
target_size_gb=90

# Directory containing camera folders
base_dir="/media/disk1/video"

# Найти и удалить пустые папки
find "$base_dir" -type d -empty -delete

# Iterate over camera folders
for camera_dir in "$base_dir"/*/; do
    # Get the current size of the camera folder in GB without decimal part
    size_gb=$(du -s "$camera_dir" | awk '{printf "%.0f\n", $1 / 1024 / 1024}')

    # Calculate how much to delete to reach the target size
    space_to_free_gb=$((size_gb - target_size_gb))

    # Check if the current size exceeds the target size
    if (( size_gb > target_size_gb )); then
        echo "Cleaning $camera_dir"
        # Delete oldest files until the folder size is reduced to the target size
        while (( space_to_free_gb > 0 )); do
            # Delete the oldest file in the folder
            find "$camera_dir" -type f -printf '%T@ %p\n' | sort -n | head -n 1 | cut -d' ' -f2- | xargs rm
            # Update the current size
            size_gb=$(du -s "$camera_dir" | awk '{printf "%.0f\n", $1 / 1024 / 1024}')
            # Calculate the remaining space to free
            space_to_free_gb=$((size_gb - target_size_gb))
        done
    fi
done