//! Admin Leptos application root and router.

use leptos::prelude::*;
use leptos_meta::{MetaTags, Stylesheet, Title, provide_meta_context};
use leptos_router::components::Router;

use crate::routes::AdminRoutes;

/// Application state for the admin app.
///
/// Note: We intentionally don't derive `FromRef` because both pools are
/// the same type (`PgPool`), which would cause a conflicting implementation.
/// Instead, handlers should use Extension extractors for the pools.
#[cfg(feature = "ssr")]
#[derive(Clone)]
pub struct AdminAppState {
    /// The primary database pool for this admin instance.
    /// For Owner App: chattyness_owner pool (no RLS)
    /// For Admin App: chattyness_app pool (RLS enforced)
    pub pool: sqlx::PgPool,
    pub leptos_options: LeptosOptions,
}

#[cfg(feature = "ssr")]
impl axum::extract::FromRef<AdminAppState> for LeptosOptions {
    fn from_ref(state: &AdminAppState) -> Self {
        state.leptos_options.clone()
    }
}

#[cfg(feature = "ssr")]
impl axum::extract::FromRef<AdminAppState> for sqlx::PgPool {
    fn from_ref(state: &AdminAppState) -> Self {
        state.pool.clone()
    }
}

/// Shell component for SSR.
///
/// The `data-app="admin"` attribute tells the WASM hydration script to mount
/// AdminApp.
pub fn admin_shell(options: LeptosOptions) -> impl IntoView {
    view! {
        <!DOCTYPE html>
        <html lang="en">
            <head>
                <meta charset="utf-8" />
                <meta name="viewport" content="width=device-width, initial-scale=1" />
                <AutoReload options=options.clone() />
                <HydrationScripts options />
                <MetaTags />
            </head>
            <body class="admin-app" data-app="admin">
                <AdminApp />
            </body>
        </html>
    }
}

/// Main admin application component.
///
/// This wraps `AdminRoutes` with a `Router` for standalone use (e.g., chattyness-owner).
/// Routes are nested under `/admin` to match the link paths used in page components.
/// For embedding in a combined app (e.g., chattyness-app), use `AdminRoutes` directly.
#[component]
pub fn AdminApp() -> impl IntoView {
    // Provide meta context for title and meta tags
    provide_meta_context();

    view! {
        <Stylesheet id="admin-styles" href="/static/css/admin.css" />
        <Title text="Chattyness Admin Panel" />

        <Router base="/admin">
            <AdminRoutes />
        </Router>
    }
}
