#!/bin/bash

status=0

# The first argument is a space-separated list of whitelisted volume IDs
whitelist=$1
whitelisted_volumes=($whitelist)  # Split into an array

anonymous_volumes=$(docker volume ls --format "{{.Name}}" | grep -E '^[a-f0-9]{64}$')

if [ -z "$anonymous_volumes" ]; then
    echo "No anonymous volumes found."
    exit
fi

echo "Anonymous volumes found:"

for volume in $anonymous_volumes; do
    # Check if the volume is in the whitelist
    if printf '%s\n' "${whitelisted_volumes[@]}" | grep -q "^$volume$"; then
        echo "Volume $volume is whitelisted and will be skipped."
        continue
    fi

    status=1
    container_ids=$(docker ps -aq --filter volume=$volume)
    if [ -z "$container_ids" ]; then
        echo "Volume $volume is not used by any running containers."
        continue
    fi

    for container_id in $container_ids; do
        container_name=$(docker inspect --format '{{ .Name }}' $container_id | sed 's#^/##')
        mount_path=$(docker inspect --format "{{ range .Mounts }}{{ if eq .Name \"$volume\" }}{{ .Destination }}{{ end }}{{ end }}" $container_id)
        
        if [ -n "$mount_path" ]; then
            echo "Volume $volume is used by container $container_name at mount path $mount_path"
        else
            echo "Volume $volume is used by container $container_name, but mount path could not be determined."
        fi
    done
done

# Additional warning for dangling volumes
dangling_volumes=$(docker volume ls -f dangling=true --format "{{.Name}}")
if [ -n "$dangling_volumes" ]; then
    status=2
    echo "The following dangling volumes were found:"
    echo "$dangling_volumes"
fi

exit $status