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

[[ $maxdepth -ne 0 && $depth -gt $maxdepth ]] && return



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



# Directories first

local d

local dirs=()

shopt -s nullglob

for d in "$dir"/*; do

    [[ -d "$d" ]] && dirs+=("$d")

done

IFS=$'\n' dirs=($(printf "%s\n" "${dirs[@]}" | sort))

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

    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



# Files

local f

local files=()

for f in "$dir"/*; do

    [[ -f "$f" ]] && files+=("$f")

done

IFS=$'\n' files=($(printf "%s\n" "${files[@]}" | sort))

local file_count=0

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

    f="${files[i]}"

    local branch="├──"

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

    local size=$(stat -c "%s" "$f" 2>/dev/null || echo 0)

    local hr_size

    if [[ "$size" -lt 1024 ]]; then hr_size="${size}B"

    elif [[ "$size" -lt 1048576 ]]; then hr_size="$((size/1024))K"

    elif [[ "$size" -lt 1073741824 ]]; then hr_size="$((size/1024/1024))M"

    else hr_size="$((size/1024/1024/1024))G"; fi

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

    ((file_count++))

done



# Total files per directory

[[ $file_count -gt 0 ]] && echo "${prefix}└── Total files: $file_count"



shopt -u nullglob