verify that the total insertions/deletions for both unstaged (tracked & untracked) and staged files are under 400 lines

check git diff under 400 lines.sh

git_diff_summary() {
    # Check if the current directory is a git repository
    git rev-parse --is-inside-work-tree > /dev/null 2>&1
    if [ $? -ne 0 ]; then
        echo "Not a git repository."
        return 1  # Exit the function if not in a git repository
    fi

    echo "Staged Changes:"
    local last_line_staged=$(git diff --staged --stat | tail -n 1)
    local colored_line_staged=$(echo "$last_line_staged" | \
        sed -e 's/\([0-9]*\) insertion(+)/\x1b[32m&\x1b[0m/g' \
            -e 's/\([0-9]*\) deletion(-)/\x1b[31m&\x1b[0m/g')
    echo "$colored_line_staged"

    echo "Unstaged Changes:"
    local last_line_unstaged=$(git diff --stat | tail -n 1)
    local colored_line_unstaged=$(echo "$last_line_unstaged" | \
        sed -e 's/\([0-9]*\) insertion(+)/\x1b[32m&\x1b[0m/g' \
            -e 's/\([0-9]*\) deletion(-)/\x1b[31m&\x1b[0m/g')
    echo "$colored_line_unstaged"

    # Count new file lines separately and accurately
    local new_file_lines=$(git ls-files --others --exclude-standard | grep -vE '^\./\.' | xargs -I{} sh -c 'test -f "{}" && wc -l "{}"' | awk '{total += $1} END {print total}')
    new_file_lines=${new_file_lines:-0}

    # Extract total insertions and deletions
    local staged_insertions=$(echo "$last_line_staged" | awk '{print $4}' | grep -o '[0-9]*')
    local staged_deletions=$(echo "$last_line_staged" | awk '{print $6}' | grep -o '[0-9]*')
    local unstaged_insertions=$(echo "$last_line_unstaged" | awk '{print $4}' | grep -o '[0-9]*')
    local unstaged_deletions=$(echo "$last_line_unstaged" | awk '{print $6}' | grep -o '[0-9]*')

    staged_insertions=${staged_insertions:-0}
    staged_deletions=${staged_deletions:-0}
    unstaged_insertions=${unstaged_insertions:-0}
    unstaged_deletions=${unstaged_deletions:-0}

    # Calculate total changes without double-counting
    local total_changes=$((staged_insertions + staged_deletions + unstaged_insertions + unstaged_deletions + new_file_lines))

    # Echo total changes in color
    if [ $total_changes -lt 400 ]; then
        echo -e "\x1b[32mTotal changes: $total_changes\x1b[0m"
    else
        echo -e "\x1b[31mTotal changes: $total_changes\x1b[0m"
    fi
}