import html
import unicodedata

from ..config import PORTAL_PREFIX

APP_NAME = "CSBot Services Portal"

# Sekce viditelné pouze pro tento e-mail (Migration Readiness, Runtime Management, Environment).
SUPER_ADMIN_EMAIL = "jiri.uhlir59@gmail.com"

# Admin menu: (popisek, odkaz, FA ikona, super_only). super_only = jen pro SUPER_ADMIN_EMAIL.
ADMIN_MENU_ITEMS = [
    ("Alerting", "/portal/alerting/rules", "fa-bell", False),
    ("Audit", "/portal/audit", "fa-clipboard-list", False),
    ("Environment", "/portal/admin/environment", "fa-sliders", True),
    ("Incidenty", "/portal/incidents", "fa-triangle-exclamation", False),
    ("IP Access", "/portal/admin/ip-access", "fa-shield-halved", False),
    ("Nasazení", "/portal/deployments", "fa-rocket", False),
    ("Plánované skripty", "/portal/scheduled-scripts", "fa-calendar-days", False),
    ("Služby", "/portal/apps", "fa-server", False),
    ("Úlohy", "/portal/jobs", "fa-list-check", False),
    ("Users", "/portal/admin/users", "fa-users", False),
    ("Workery", "/portal/workers", "fa-gears", False),
    ("Zálohy", "/portal/backups", "fa-box-archive", False),
]


def _alpha_key(label: str) -> str:
    """Řadicí klíč bez diakritiky (Plánované < Přehled < Služby < Úlohy ...)."""
    normalized = unicodedata.normalize("NFKD", label)
    return "".join(ch for ch in normalized if not unicodedata.combining(ch)).lower()


def page(title: str, body: str, user=None) -> str:
    nav = ""
    user_panel = ""

    if user:
        username = html.escape(user.get("username", ""))
        display_name = html.escape(user.get("display_name") or user.get("username", ""))
        role = (user.get("role") or "").lower()
        email = (user.get("email") or "").strip().lower()
        can_operate = role in ("admin", "developer")  # provozní sekce: jen dev nebo admin
        is_super = email == SUPER_ADMIN_EMAIL

        # Guest nemá přístup nikam – nezobrazujeme mu žádné odkazy, jen odhlášení.
        is_guest = role == "guest"

        # Hlavní navigace: Služby vidí každý přihlášený uživatel (kromě guesta); Úlohy, Plánované
        # skripty, Alerting a Pro vývojáře jen developer nebo admin.
        nav_links = ""
        if not is_guest:
            nav_links = '<a class="nav-link" href="/portal/apps"><i class="fa-solid fa-server" aria-hidden="true"></i> Služby</a>'
        if can_operate:
            nav_links += (
                '<a class="nav-link" href="/portal/jobs"><i class="fa-solid fa-list-check" aria-hidden="true"></i> Úlohy</a>'
                '<a class="nav-link" href="/portal/logs"><i class="fa-solid fa-file-lines" aria-hidden="true"></i> Logy</a>'
                '<a class="nav-link" href="/portal/scheduled-scripts"><i class="fa-solid fa-calendar-days" aria-hidden="true"></i> Plánované skripty</a>'
                '<a class="nav-link" href="/portal/alerting/rules"><i class="fa-solid fa-bell" aria-hidden="true"></i> Alerting</a>'
                '<a class="nav-link" href="/portal/developers"><i class="fa-solid fa-code" aria-hidden="true"></i> Pro vývojáře</a>'
            )
        # IP Access spravují i developeři, ale admin menu se jim nezobrazuje – proto jen jim
        # přidáváme odkaz do hlavní navigace, aby stránku nemuseli hledat přes detail služby.
        if can_operate and role != "admin":
            nav_links += '<a class="nav-link" href="/portal/admin/ip-access"><i class="fa-solid fa-shield-halved" aria-hidden="true"></i> IP Access</a>'

        admin_menu = ""
        if role == "admin":
            visible_items = [item for item in ADMIN_MENU_ITEMS if not item[3] or is_super]
            visible_items.sort(key=lambda item: _alpha_key(item[0]))
            admin_links = "".join(
                f'<a href="{href}"><i class="fa-solid {icon}" aria-hidden="true"></i> {html.escape(label)}</a>'
                for label, href, icon, _super_only in visible_items
            )
            admin_menu = f"""
                <details class="nav-menu">
                    <summary class="nav-menu-button"><i class="fa-solid fa-screwdriver-wrench" aria-hidden="true"></i> Admin</summary>
                    <div class="nav-menu-panel">
                        {admin_links}
                    </div>
                </details>
            """
        nav = f"""
            <button type="button" class="nav-toggle" aria-label="Otevřít menu" onclick="togglePortalNav()"><i class="fa-solid fa-bars" aria-hidden="true"></i></button>
            <div class="nav-wrap" id="portal-nav">
                <nav>
                    {nav_links}
                    {admin_menu}
                    <div class="user-menu">
                        <span class="user-name">{display_name}</span>
                        <span class="muted">@{username}</span>
                        <form method="post" action="/portal/logout">
                            <button type="submit" class="btn-secondary"><i class="fa-solid fa-right-from-bracket" aria-hidden="true"></i> Odhlásit</button>
                        </form>
                    </div>
                </nav>
            </div>
        """
        user_panel = ""

    return f"""
    <html>
    <head>
        <title>{APP_NAME} - {html.escape(title)}</title>
        <link rel="stylesheet" href="{PORTAL_PREFIX}/static/vendor/fontawesome/css/fontawesome.min.css">
        <link rel="stylesheet" href="{PORTAL_PREFIX}/static/vendor/fontawesome/css/solid.min.css">
        <link rel="stylesheet" href="{PORTAL_PREFIX}/static/styles.css">
        <script src="{PORTAL_PREFIX}/static/portal.js"></script>
    </head>
    <body>
        <header>
            <a class="brand" href="/portal/apps" aria-label="{APP_NAME}">
                <img src="{PORTAL_PREFIX}/static/csbot-logo.svg" alt="CSBOT">
                <span>{APP_NAME}</span>
            </a>
            {nav}
            {user_panel}
        </header>
        <main>
            {body}
        </main>
    </body>
    </html>
    """


def render_result(title, back_url, sections, extra_link=None, extra_label=None, user=None):
    rendered_sections = ""

    for section_title, content in sections:
        rendered_sections += f"""
        <h2>{html.escape(section_title)}</h2>
        <pre>{html.escape(content)}</pre>
        """

    extra = ""
    if extra_link and extra_label:
        extra = f'<p><a class="btn" href="{extra_link}">{html.escape(extra_label)}</a></p>'

    return page(
        title,
        f"""
        <div class="card">
            <h2>{html.escape(title)}</h2>
            {extra}
            <p><a href="{back_url}">&larr; Zpět</a></p>
        </div>
        <div class="card">
            {rendered_sections}
        </div>
        """,
        user=user,
    )