# -*- coding: utf-8 -*-
"""Shared pieces of the website refresh 2026-10-08: the page map, the two navs, hreflang, file IO."""
import io, os, re, subprocess

REPO = "/mnt/5_hdd/felhom.eu/git/felhom.eu"
W = os.path.join(REPO, "website")
SITE = "https://felhom.eu"

# hu file, hu url, en file, en url, hu nav href that is "active", en nav href that is "active"
PAIRS = [
    ("index.html", "/", "en/index.html", "/en/", None, None),
    ("alkalmazasok.html", "/alkalmazasok", "en/apps.html", "/en/apps", "/alkalmazasok", "/en/apps"),
    ("technologiak.html", "/technologiak", "en/technology.html", "/en/technology", "/technologiak", "/en/technology"),
    ("biztonsagimentes.html", "/biztonsagimentes", "en/backups.html", "/en/backups", "/biztonsagimentes", "/en/backups"),
    ("gyik.html", "/gyik", "en/faq.html", "/en/faq", "/gyik", "/en/faq"),
    ("kapcsolat.html", "/kapcsolat", "en/contact.html", "/en/contact", "/kapcsolat", "/en/contact"),
    ("letoltes.html", "/letoltes", "en/download.html", "/en/download", None, None),
]

HU_ITEMS = [("/#szolgaltatasok", "Szolgáltatások"), ("/alkalmazasok", "Alkalmazások"), ("/technologiak", "Technológiák"),
            ("/biztonsagimentes", "Mentések"), ("/gyik", "GYIK"), ("/kapcsolat", "Kapcsolat")]
EN_ITEMS = [("/en/#services", "Services"), ("/en/apps", "Apps"), ("/en/technology", "Technology"),
            ("/en/backups", "Backups"), ("/en/faq", "FAQ"), ("/en/contact", "Contact")]


def nav(lang, active, twin_url):
    items = HU_ITEMS if lang == "hu" else EN_ITEMS
    lis = []
    for href, label in items:
        act = ' class="active"' if href == active else ""
        lis.append('                <li><a href="%s"%s>%s</a></li>' % (href, act, label))
    if lang == "hu":
        lis.append('                <li><a href="%s" lang="en" hreflang="en" class="lang-switch">English</a></li>' % twin_url)
    else:
        lis.append('                <li><a href="%s" lang="hu" hreflang="hu" class="lang-switch">Magyar</a></li>' % twin_url)
    home = "/" if lang == "hu" else "/en/"
    open_l = "Menü megnyitása" if lang == "hu" else "Open menu"
    return ("""    <nav>
        <div class="container">
            <a href="%s" class="logo">
                <img src="/assets/logo.png" alt="Felhom.eu logo">
                <span class="logo-text">felhom.eu</span>
            </a>
            <ul class="nav-links">
%s
            </ul>
            <button class="hamburger" id="hamburger" aria-label="%s" aria-expanded="false">
                <span class="hamburger-box">
                    <span class="hamburger-line"></span>
                    <span class="hamburger-line"></span>
                    <span class="hamburger-line"></span>
                </span>
            </button>
        </div>
    </nav>""" % (home, "\n".join(lis), open_l))


FOOTER_HU = """    <footer>
        <div class="container">
            <p>© 2026 felhom.eu — Saját felhőd, saját szabályaid</p>
        </div>
    </footer>"""
FOOTER_EN = """    <footer>
        <div class="container">
            <p>© 2026 felhom.eu — Your own cloud, your own rules. Felhom serves households in Hungary.</p>
        </div>
    </footer>"""


def alternates(hu_url, en_url):
    return ('    <link rel="alternate" hreflang="hu" href="%s%s">\n'
            '    <link rel="alternate" hreflang="en" href="%s%s">\n'
            '    <link rel="alternate" hreflang="x-default" href="%s%s">') % (SITE, hu_url, SITE, en_url, SITE, hu_url)


def head_text(path):
    """The file as it is at HEAD (the source every build starts from, so a re-run is idempotent)."""
    rel = os.path.relpath(os.path.join(W, path), REPO)
    out = subprocess.run(["git", "-C", REPO, "show", "HEAD:" + rel], capture_output=True)
    if out.returncode != 0:
        return None
    return out.stdout.decode("utf-8-sig")


def read(path):
    return io.open(os.path.join(W, path), encoding="utf-8-sig").read()


def write(path, text):
    full = os.path.join(W, path)
    os.makedirs(os.path.dirname(full), exist_ok=True)
    with io.open(full, "w", encoding="utf-8-sig", newline="\n") as f:
        f.write(text)


def sub1(s, old, new, count=1):
    n = s.count(old)
    if n != count:
        raise SystemExit("expected %d x %r, found %d" % (count, old[:90], n))
    return s.replace(old, new)


def set_nav(s, lang, active, twin_url):
    s2, n = re.subn(r"    <nav>.*?</nav>", lambda m: nav(lang, active, twin_url), s, count=1, flags=re.S)
    assert n == 1
    return s2


def set_footer(s, lang):
    s2, n = re.subn(r"    <footer>.*?</footer>", lambda m: FOOTER_HU if lang == "hu" else FOOTER_EN, s, count=1, flags=re.S)
    assert n == 1
    return s2


def set_alternates(s, hu_url, en_url):
    """Insert (or replace) the three hreflang links right after the canonical link."""
    s = re.sub(r'    <link rel="alternate" hreflang="[^"]+" href="[^"]+">\n', "", s)
    m = re.search(r'    <link rel="canonical" href="[^"]+">\n', s)
    assert m, "no canonical"
    return s[:m.end()] + alternates(hu_url, en_url) + "\n" + s[m.end():]