"""Regression checks for the public download-page copy."""
from html.parser import HTMLParser
from pathlib import Path
import unittest


class Page(HTMLParser):
    def __init__(self, text):
        super().__init__()
        self.links = []
        self.visible = []
        self.header = False
        self.header_links = []
        self.feed(text)

    def handle_starttag(self, tag, attrs):
        if tag == 'header':
            self.header = True
        if tag == 'a':
            href = dict(attrs).get('href', '')
            self.links.append(href)
            if self.header:
                self.header_links.append(href)

    def handle_endtag(self, tag):
        if tag == 'header':
            self.header = False

    def handle_data(self, data):
        self.visible.append(data)


class WebsiteCopyTests(unittest.TestCase):
    def setUp(self):
        self.page = Page((Path(__file__).resolve().parents[1] / 'website/index.html').read_text())

    def test_header_has_no_github_source_link(self):
        self.assertFalse(any('github.com' in href for href in self.page.header_links))
        self.assertNotIn('Source on GitHub', ''.join(self.page.visible))

    def test_release_has_no_upgrade_comment(self):
        self.assertNotIn('Updates v0.4.2 without uninstalling', ''.join(self.page.visible))

    def test_footer_has_no_provider_disclaimer(self):
        self.assertNotIn(
            'External catalog and media providers. Use only media you’re entitled to access.',
            ''.join(self.page.visible),
        )

    def test_version_download_and_source_archive_remain(self):
        self.assertIn('v0.4.4', ''.join(self.page.visible))
        self.assertIn('/downloads/reelbox-0.4.4-arm64.apk', self.page.links)
        self.assertIn('/downloads/reelbox-0.4.4-source.zip', self.page.links)
        self.assertIn('Source archive', ''.join(self.page.visible))


if __name__ == '__main__':
    unittest.main()