# Exit if maxdepth reached

if [[ $maxdepth -ne 0 && $depth -gt $maxdepth ]]; then

    return

fi



# Ensure directory exists

[[ ! -d "$dir" ]] && return



echo "${prefix}${dir##*/}/"



# Enable nullglob so empty dirs don't break loops

shopt -s nullglob



# Get directories first

local dirs=("$dir"/*/)

IFS=$'\n' dirs=($(sort <<<"${dirs[*]}"))



for i in "${!dirs[@]}"; do

    local d="${dirs[i]%/}"

    local branch="├──"

    [[ $i -eq $(( ${#dirs[@]} - 1 )) ]] && branch="└──"

    local new_prefix="$prefix"

    [[ $i -eq $(( ${#dirs[@]} - 1 )) ]] && new_prefix+="    " || new_prefix+="│   "

    echo "${prefix}${branch} ${d##*/}/"

    print_tree "$d" "$new_prefix" "$maxdepth" $((depth+1))

done



# Then files

local files=("$dir"/*)

IFS=$'\n' files=($(sort <<<"${files[*]}"))

local file_count=0

for f in "${files[@]}"; do

    [[ -f "$f" ]] || continue

    local branch="├──"

    [[ $file_count -eq $(( ${#files[@]} - 1 )) ]] && branch="└──"

    # Human-readable size

    local size=$(stat -c "%s" "$f" 2>/dev/null || stat -f "%z" "$f")

    local hr_size

    if [[ "$size" =~ ^[0-9]+$ ]]; then

        if [ "$size" -lt 1024 ]; then

            hr_size="${size}B"

        elif [ "$size" -lt $((1024*1024)) ]; then

            hr_size="$((size/1024))K"

        elif [ "$size" -lt $((1024*1024*1024)) ]; then

            hr_size="$((size/1024/1024))M"

        else

            hr_size="$((size/1024/1024/1024))G"

        fi

    else

        hr_size="?"

    fi

    echo "${prefix}${branch} ${f##*/} [${hr_size}]"

    ((file_count++))

done



# Total files in directory

if [ $file_count -gt 0 ]; then

    echo "${prefix}└── Total files: $file_count"

fi



shopt -u nullglob