#!/usr/bin/env python3
import argparse
import os
import subprocess
import sys
from typing import Sequence

ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
os.chdir(ZULIP_PATH)
sys.path.insert(0, ZULIP_PATH)

# check for the venv
from tools.lib import sanity_check

sanity_check.check_venv(__file__)


def color_message(color_code: str, message: str) -> None:
    print(f"\033[0;{color_code}m{message}\033[0m", file=sys.stderr)


parser = argparse.ArgumentParser()
parser.add_argument(
    "-L",
    "--loglevel",
    dest="loglevel",
    nargs=1,
    help="Log level (default: ERROR)",
)
parser.add_argument(
    "--skip-check-links",
    dest="skip_check_links",
    action="store_true",
    help="Skip checking of links.",
)
parser.add_argument(
    "--skip-external-links",
    dest="skip_external_link_check",
    # default = false
    action="store_true",
    help="Skip checking of external links.",
)
options = parser.parse_args()
# loglevel should be used as an extra command line option
# in the form of ["-L", "LOGLEVEL"]
# if loglevel is defined, insert "-L" ahead of loglevel
if options.loglevel:
    options.loglevel.insert(0, "-L")
# if loglevel is undefined, make loglevel an empty list
else:
    options.loglevel = []

os.chdir("docs")

# collapse_navigation is set to False in conf.py to improve sidebar navigation for users.
# However, we must change its value to True before we begin testing links.
# Otherwise, sphinx would generate a large number of links we don't need to test.
# The crawler would take a very long time to finish and GitHub Actions would fail as a result.
subprocess.check_call(
    ["make", "clean", "html", "O='-D html_theme_options.collapse_navigation=True'"]
)

err = 0


def check(args: Sequence[str]) -> None:
    global err
    if subprocess.call(args) == 0:
        color_message("92", "Passed!")
    else:
        color_message("91", "Failed!")
        err = 1


color_message("94", "Validating HTML...")
check(
    [
        "java",
        "-jar",
        "../node_modules/vnu-jar/build/dist/vnu.jar",
        "--filterfile",
        "../tools/documentation.vnufilter",
        "--skip-non-html",
        "_build/html",
    ]
)

if options.skip_check_links:
    color_message("94", "Skipped testing links in documentation.")
else:
    os.chdir("../tools/documentation_crawler")
    if options.skip_external_link_check:
        color_message("94", "Testing only internal links in documentation...")
        check(
            [
                "scrapy",
                "crawl_with_status",
                "documentation_crawler",
                "-a",
                "skip_external=set",
                *options.loglevel,
            ]
        )
        # calling crawl directly as parameter needs to be passed
    else:
        color_message("94", "Testing links in documentation...")
        check(["scrapy", "crawl_with_status", "documentation_crawler", *options.loglevel])


sys.exit(err)