import { useState, useEffect, useCallback } from "react";
import { BrowserRouter, Routes, Route } from "react-router-dom";
import { getToken, getAuthMe, clearToken, type LoginMethod } from "./api";
import { Header } from "./components/Header";
import { Footer } from "./components/Footer";
import { ClaimWizard } from "./components/ClaimWizard";
import { StatsSection } from "./components/StatsSection";
import { DepositSection } from "./components/DepositSection";
import { TransactionsPage } from "./pages/TransactionsPage";
import { SponsorsPage } from "./pages/SponsorsPage";
import { MyAdsPage } from "./pages/MyAdsPage";
import { SponsorsSection } from "./components/SponsorsSection";

export default function App() {
  const [pubkey, setPubkey] = useState<string | null>(null);
  const [loginMethod, setLoginMethod] = useState<LoginMethod | null>(null);
  const [statsRefetchTrigger, setStatsRefetchTrigger] = useState(0);

  const refreshAuth = useCallback(() => {
    const token = getToken();
    if (!token) {
      setPubkey(null);
      setLoginMethod(null);
      return;
    }
    getAuthMe()
      .then((r) => {
        setPubkey(r.pubkey);
        setLoginMethod(r.method ?? "nip98");
      })
      .catch(() => {
        clearToken();
        setPubkey(null);
        setLoginMethod(null);
      });
  }, []);

  useEffect(() => {
    refreshAuth();
    const onAuthChanged = () => refreshAuth();
    window.addEventListener("auth-changed", onAuthChanged);
    return () => window.removeEventListener("auth-changed", onAuthChanged);
  }, [refreshAuth]);

  const handlePubkeyChange = useCallback((pk: string | null, method?: LoginMethod) => {
    setPubkey(pk);
    setLoginMethod(pk ? (method ?? "nip98") : null);
  }, []);

  const handleLogout = useCallback(() => {
    clearToken();
    setPubkey(null);
    setLoginMethod(null);
  }, []);

  const handleClaimSuccess = useCallback(() => {
    setStatsRefetchTrigger((t) => t + 1);
  }, []);

  return (
    <BrowserRouter>
      <div className="app sats-flow">
        <Header pubkey={pubkey} onLogout={handleLogout} onLoginSuccess={handlePubkeyChange} />
        <div className="topbar" />
        <div className="app-body">
          <Routes>
            <Route
              path="/"
              element={
                <>
                  <section className="claim-flow-page claim-flow-page--grid">
                    <div className="sf-ambient-glow" aria-hidden />
                    <div className="claim-flow-grid">
                      <aside className="sidebar sidebar-left">
                        <div className="funding-panel">
                          <DepositSection />
                        </div>
                      </aside>
                      <main className="claim-flow-main">
                        <ClaimWizard
                          pubkey={pubkey}
                          loginMethod={loginMethod}
                          onPubkeyChange={handlePubkeyChange}
                          onClaimSuccess={handleClaimSuccess}
                        />
                      </main>
                      <aside className="sidebar sidebar-right">
                        <StatsSection refetchTrigger={statsRefetchTrigger} />
                      </aside>
                    </div>
                  </section>
                  <SponsorsSection />
                </>
              }
            />
            <Route
              path="/transactions"
              element={
                <div className="sf-page">
                  <TransactionsPage />
                </div>
              }
            />
            <Route
              path="/sponsors"
              element={
                <div className="sponsors-route sf-page">
                  <SponsorsPage />
                </div>
              }
            />
            <Route
              path="/my-ads"
              element={
                <div className="sf-page">
                  <MyAdsPage />
                </div>
              }
            />
          </Routes>
        </div>
        <Footer />
      </div>
    </BrowserRouter>
  );
}