# Check maxdepth
if [[ $maxdepth -ne 0 && $depth -gt $maxdepth ]]; then
    return
fi

# Get sorted directories and files
local entries=("$dir"/*)
local dirs=()
local files=()

for e in "${entries[@]}"; do
    [[ -d "$e" ]] && dirs+=("$e")
    [[ -f "$e" ]] && files+=("$e")
done

# Process directories first
local count=${#dirs[@]}
for i in "${!dirs[@]}"; do
    local d="${dirs[i]}"
    local branch="├──"
    [[ $i -eq $((count-1)) ]] && branch="└──"
    echo "${prefix}${branch} ${d##*/}"
    # Recurse into subdirectory
    local new_prefix="$prefix"
    [[ $i -eq $((count-1)) ]] && new_prefix+="    " || new_prefix+="│   "
    print_tree "$d" "$new_prefix" "$maxdepth" $((depth+1))
done

# Then files
count=${#files[@]}
local file_count=0
for i in "${!files[@]}"; do
    local f="${files[i]}"
    local branch="├──"
    [[ $i -eq $((count-1)) ]] && branch="└──"
    # get human-readable size
    local size
    if command -v stat >/dev/null 2>&1; then
        # Linux/macOS compatible
        size=$(stat -c "%s" "$f" 2>/dev/null || stat -f "%z" "$f")
    else
        size="?"
    fi
    # convert size to human-readable
    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

# Print total files count in this directory
if [ $file_count -gt 0 ]; then
    echo "${prefix}└── Total files: $file_count"
fi