use crate::i18n::Locale;
use crate::{components::*, pages::*};
use dioxus::prelude::*;

/// Application routes.
///
/// Public pages (`LandingPage`, `ImpressumPage`, `PrivacyPage`) live
/// outside the `AppShell` layout. Authenticated pages are wrapped in
/// `AppShell` which renders the sidebar. `DeveloperShell` and `OrgShell`
/// provide nested tab navigation within the app shell.
#[derive(Debug, Clone, Routable, PartialEq)]
#[rustfmt::skip]
pub enum Route {
    #[route("/")]
    LandingPage {},
    #[route("/impressum")]
    ImpressumPage {},
    #[route("/privacy")]
    PrivacyPage {},
    #[layout(AppShell)]
        #[route("/dashboard")]
        DashboardPage {},
        #[route("/providers")]
        ProvidersPage {},
        #[route("/chat")]
        ChatPage {},
        #[route("/tools")]
        ToolsPage {},
        #[route("/knowledge")]
        KnowledgePage {},

        #[layout(DeveloperShell)]
            #[route("/developer/agents")]
            AgentsPage {},
            #[route("/developer/flow")]
            FlowPage {},
            #[route("/developer/analytics")]
            AnalyticsPage {},
        #[end_layout]

        #[layout(OrgShell)]
            #[route("/organization/pricing")]
            OrgPricingPage {},
            #[route("/organization/dashboard")]
            OrgDashboardPage {},
        #[end_layout]
    #[end_layout]

    #[route("/login?:redirect_url")]
    Login { redirect_url: String },
}

const FAVICON: Asset = asset!("/assets/favicon.svg");
const MAIN_CSS: Asset = asset!("/assets/main.css");
const TAILWIND_CSS: Asset = asset!("/assets/tailwind.css");
const MANIFEST: Asset = asset!("/assets/manifest.json");

/// Google Fonts URL for Inter (body) and Space Grotesk (headings).
const GOOGLE_FONTS: &str = "https://fonts.googleapis.com/css2?\
    family=Inter:wght@400;500;600&\
    family=Space+Grotesk:wght@500;600;700&\
    display=swap";

/// Root application component. Loads global assets and mounts the router.
///
/// Provides a `Signal<Locale>` context that all child components can read
/// via `use_context::<Signal<Locale>>()` to access the current locale.
/// The locale is persisted in `localStorage` under `"certifai_locale"`.
#[component]
pub fn App() -> Element {
    // Read persisted locale from localStorage on first render.
    let initial_locale = {
        #[cfg(feature = "web")]
        {
            web_sys::window()
                .and_then(|w| w.local_storage().ok().flatten())
                .and_then(|s| s.get_item("certifai_locale").ok().flatten())
                .map(|code| Locale::from_code(&code))
                .unwrap_or_default()
        }
        #[cfg(not(feature = "web"))]
        {
            Locale::default()
        }
    };
    use_context_provider(|| Signal::new(initial_locale));

    rsx! {
        // Seggwat feedback widget
        document::Script {
            src: "https://seggwat.com/static/widgets/v1/seggwat-feedback.js",
            r#defer: true,
            "data-project-key": "a04b8cf1-9177-42ce-8a7b-084f38b99799",
            "data-button-color": "#6d85c6",
            "data-button-position": "right-side",
            "data-enable-screenshots": "true",
        }

        document::Link { rel: "icon", href: FAVICON }
        document::Link { rel: "manifest", href: MANIFEST }
        document::Meta { name: "theme-color", content: "#4B3FE0" }
        document::Meta { name: "apple-mobile-web-app-capable", content: "yes" }
        document::Meta {
            name: "apple-mobile-web-app-status-bar-style",
            content: "black-translucent",
        }
        document::Link { rel: "apple-touch-icon", href: FAVICON }
        document::Link { rel: "preconnect", href: "https://fonts.googleapis.com" }
        document::Link {
            rel: "preconnect",
            href: "https://fonts.gstatic.com",
            crossorigin: "anonymous",
        }
        document::Link { rel: "stylesheet", href: GOOGLE_FONTS }
        document::Link { rel: "stylesheet", href: TAILWIND_CSS }
        document::Link { rel: "stylesheet", href: MAIN_CSS }

        // Register PWA service worker
        document::Script {
            r#"
            if ('serviceWorker' in navigator) {{
                navigator.serviceWorker.register('/assets/sw.js')
                    .catch(function(e) {{ console.warn('SW registration failed:', e); }});
            }}
            "#
        }

        // Apply persisted theme to <html> before first paint to avoid flash.
        // Default to certifai-dark when no preference is stored.
        document::Script {
            r#"
            (function() {{
                var t = localStorage.getItem('theme') || 'certifai-dark';
                document.documentElement.setAttribute('data-theme', t);
            }})();
            "#
        }

        Router::<Route> {}
    }
}