#!/usr/bin/python3
import sys
import codecs

def test_utf8_encoding(filepath):
    try:
        with codecs.open(filepath, 'r', 'utf-8') as testfile:
            testfile.read()
        #print(f"{filepath} is openable with UTF-8 encoding.")
    except UnicodeDecodeError:
        print(f"{filepath} is not openable with UTF-8 encoding.")
        print(f"Converting {filepath} from ISO-8859-1 to UTF-8...")
        with codecs.open(filepath, 'r', 'iso-8859-1') as f:
            content = f.read()
        utf8_content = content.decode('iso-8859-1').encode('utf-8')
        with codecs.open(filepath, 'w', 'utf-8') as f:
            f.write(utf8_content)
        print(f"{filepath} has been converted to UTF-8.")

if len(sys.argv) < 2:
    print("Please provide a file name as a command line argument.")
    sys.exit(1)

filepath = sys.argv[1]
test_utf8_encoding(filepath)