#!/usr/bin/env python3
"""Text file analyzer: count words, lines, characters."""

import sys
from pathlib import Path


def analyze_file(filepath: str) -> dict:
    """Analyze a text file and return counts."""
    p = Path(filepath)
    if not p.exists():
        raise FileNotFoundError(f"File not found: {filepath}")
    
    content = p.read_text(encoding='utf-8')
    lines = content.splitlines()
    
    return {
        'filepath': filepath,
        'lines': len(lines),
        'words': len(content.split()),
        'characters': len(content),
        'bytes': len(content.encode('utf-8'))
    }


def main():
    if len(sys.argv) < 2:
        print("Usage: text_analyzer.py <file>", file=sys.stderr)
        sys.exit(1)
    
    try:
        result = analyze_file(sys.argv[1])
        print(f"File: {result['filepath']}")
        print(f"Lines: {result['lines']}")
        print(f"Words: {result['words']}")
        print(f"Characters: {result['characters']}")
        print(f"Bytes (UTF-8): {result['bytes']}")
    except FileNotFoundError as e:
        print(f"Error: {e}", file=sys.stderr)
        sys.exit(2)


if __name__ == '__main__':
    main()