roomservice: Migrate from GitHub API to git ls-remote

import netrc

import os

import re

import subprocess

import sys

import urllib.error

import urllib.parse

except:

    githubauth = None

def add_auth(githubreq):

    if githubauth:

        githubreq.add_header("Authorization","Basic %s" % githubauth)

if not depsonly:

    githubreq = urllib.request.Request("https://raw.githubusercontent.com/LineageOS/mirror/main/default.xml")

    try:

    print("Default revision: %s" % default_revision)

    print("Checking branch info")

    githubreq = urllib.request.Request("https://api.github.com/repos/LineageOS/" + repo_name + "/branches")

    add_auth(githubreq)

    result = json.loads(urllib.request.urlopen(githubreq, timeout=5).read().decode())

    if has_branch(result, default_revision):

    try:

        stdout = subprocess.run(

            ["git", "ls-remote", "-b", "https://:@github.com/LineageOS/" + repo_name],

            stdout=subprocess.PIPE,

            stderr=subprocess.PIPE,

        ).stdout.decode()

        branches = [x.split("refs/heads/")[-1] for x in stdout.splitlines()]

    except:

        return ""

    if default_revision in branches:

        return default_revision

    fallbacks = [ get_default_revision_no_minor() ]

        fallbacks += list(filter(bool, os.getenv('ROOMSERVICE_BRANCHES').split(' ')))

    for fallback in fallbacks:

        if has_branch(result, fallback):

        if fallback in branches:

            print("Using fallback branch: %s" % fallback)

            return fallback

    print("Default revision %s not found in %s. Bailing." % (default_revision, repo_name))

    print("Branches found:")

    for branch in [branch['name'] for branch in result]:

    for branch in branches:

        print(branch)

    print("Use the ROOMSERVICE_BRANCHES environment variable to specify a list of fallback branches.")

    return ""