clean & assemble urls. Quick and dirty solution - need to refactor

clean_urls.py

import re
from urllib.parse import urlsplit

links = [
    # eligible links
    "google.com/home",
    "http://google.com/home",
    "https://google.com/home",

    "www.google.com/home",
    "http://www.google.com/home",
    "https://www.google.com/home",

    "cdn.google.com/home",
    "http://cdn.google.com/home",
    "https://cdn.google.com/home",

    "www.cdn.google.com/home",
    "http://www.cdn.google.com/home",
    "https://www.cdn.google.com/home",

    "/",
    "/home",
    "//cdn.google.com/home",  # url with unspecified protocol

    # inegible links
    "#",
    "#home",
    "mailto:[email protected]",
    "tel:12345678900",
    "javascript:alert('hello')",
    "next",
    "file://dosomething",
    "chrome://dosomething",
    "microsoft-edge://dosomething",
    "ghttp://dosomething",
    "firefox://dosomething",
    "iexplore://dosomething",
    "opera://dosomething",
]

root_domain = "https://www.google.com"
root_scheme = urlsplit(root_domain).scheme
root_netloc = urlsplit(root_domain).netloc

regex = r"""( *# *\S* *| *mailto *: *| *tel *: *| *javascript *: *| *next *| *file *:\/\/ *| *chrome *:\/\/ *| *microsoft-edge *:\/\/ *| *ghttp *:\/\/ *| *firefox *:\/\/ *| *iexplore *:\/\/ *| *opera *:\/\/ *)"""

for n, link in enumerate(links, start=1):
    if not re.search(regex, link):

        if link.startswith("http://"):
            print(f"{n}: {link} <- {link}")
        elif link.startswith("https://"):
            print(f"{n}: {link} <- {link}")
        elif link.startswith("www."):
            print(f"{n}: {root_scheme}://{link} <- {link}")
        elif link == "/":
            print(f"{n}: {root_scheme}://{root_netloc}{link} <- {link}")
        elif re.search(r"^\/{1}\w+", link):
            print(f"{n}: {root_scheme}://{root_netloc}{link} <- {link}")
        elif link.startswith("//"):
            print(f"{n}: {root_scheme}:{link} <- {link}")
        else:
            print(f"{n}: {root_scheme}://{link} <- {link}")
    
print(f"of {len([i for i in links if not re.search(regex, i)])}")