import re

from django.conf import settings


def _phone_tel(phone: str) -> str:
    digits = re.sub(r"[^\d+]", "", phone or "")
    return digits


def site_branding(request):
    phone = settings.CONTACT_PHONE or ""
    public_site_url = (getattr(settings, "PUBLIC_SITE_URL", None) or "").rstrip("/")
    if not public_site_url and getattr(request, "build_absolute_uri", None):
        public_site_url = request.build_absolute_uri("/").rstrip("/")
    return {
        "SITE_NAME": settings.SITE_NAME,
        "SITE_TAGLINE": settings.SITE_TAGLINE,
        "PUBLIC_SITE_URL": public_site_url,
        "CONTACT_PHONE": phone,
        "CONTACT_PHONE_TEL": _phone_tel(phone),
        "CONTACT_EMAIL": settings.CONTACT_EMAIL or "",
        "CONTACT_ADDRESS": getattr(settings, "CONTACT_ADDRESS", "") or "",
        "CONTACT_SERVICE_AREA": getattr(
            settings,
            "CONTACT_SERVICE_AREA",
            "",
        ),
        "CREDIT_NAME": getattr(settings, "CREDIT_NAME", "AI ML Operations, LLC"),
        "CREDIT_URL": getattr(
            settings, "CREDIT_URL", "https://aimloperations.com"
        ),
        "SITE_UNDER_CONSTRUCTION": settings.SITE_UNDER_CONSTRUCTION,
    }


def shop_cart(request):
    from django.apps import apps as django_apps

    if not django_apps.is_installed("shop"):
        return {"cart_count": 0}
    session = getattr(request, "session", None)
    if session is None:
        return {"cart_count": 0}
    from shop.services import cart_lines

    lines = cart_lines(session)
    return {"cart_count": sum(line["quantity"] for line in lines)}


def tianji_tracking(request):
    match = getattr(request, "resolver_match", None)
    url_name = getattr(match, "url_name", "") or ""
    namespace = getattr(match, "namespace", "") or ""
    full = f"{namespace}:{url_name}" if namespace else url_name

    nav_section = ""
    if full == "dashboard:home":
        nav_section = "dashboard"
    elif namespace == "leads":
        nav_section = "leads"
    elif full == "analytics:report":
        nav_section = "analytics"
    elif namespace == "contacts":
        nav_section = "contacts"
    elif full == "directmail:postcard_designer":
        nav_section = "postcard"
    elif namespace == "email_sms":
        nav_section = "campaigns"
    elif namespace == "directmail":
        nav_section = "directmail"
    elif namespace == "blog":
        nav_section = "blog"
    elif namespace == "payments":
        nav_section = "payments"
    elif full == "social:account_list":
        nav_section = "social_accounts"
    elif namespace == "social":
        nav_section = "social"
    elif namespace == "shop":
        nav_section = "shop"

    return {
        "tianji_enabled": getattr(settings, "TIANJI_ENABLED", False)
        and bool(getattr(settings, "TIANJI_WEBSITE_ID", ""))
        and bool(getattr(settings, "TIANJI_TRACKER_URL", "")),
        "tianji_tracker_url": getattr(
            settings,
            "TIANJI_TRACKER_URL",
            "https://tianji.aimloperations.com/tracker.js",
        ),
        "tianji_website_id": getattr(settings, "TIANJI_WEBSITE_ID", ""),
        "page_name": url_name,
        "nav_section": nav_section,
    }