import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:go_router/go_router.dart';
import 'package:http/http.dart' as http;
import 'package:ndk/shared/nips/nip19/nip19.dart';
import 'package:zap_stream_flutter/const.dart';
import 'package:zap_stream_flutter/i18n/strings.g.dart';
import 'package:zap_stream_flutter/pages/category.dart';
import 'package:zap_stream_flutter/pages/hashtag.dart';
import 'package:zap_stream_flutter/pages/home.dart';
import 'package:zap_stream_flutter/pages/live.dart';
import 'package:zap_stream_flutter/pages/login.dart';
import 'package:zap_stream_flutter/pages/login_input.dart';
import 'package:zap_stream_flutter/pages/new_account.dart';
import 'package:zap_stream_flutter/pages/profile.dart';
import 'package:zap_stream_flutter/pages/settings.dart';
import 'package:zap_stream_flutter/pages/settings_profile.dart';
import 'package:zap_stream_flutter/pages/settings_wallet.dart';
import 'package:zap_stream_flutter/pages/stream.dart';
import 'package:zap_stream_flutter/theme.dart';
import 'package:zap_stream_flutter/utils.dart';
import 'package:zap_stream_flutter/widgets/header.dart';

/// Resolves a NIP-05 identifier to a pubkey
Future<String?> resolveNip05(String handle, String domain) async {
  try {
    final url = "https://$domain/.well-known/nostr.json?name=$handle";
    final response = await http.get(Uri.parse(url));
    
    if (response.statusCode == 200) {
      final json = jsonDecode(response.body);
      final names = json["names"] as Map<String, dynamic>?;
      
      if (names != null) {
        return names[handle] as String?;
      }
    }
  } catch (e) {
    // NIP-05 resolution failed
  }
  return null;
}

void runZapStream() {
  runApp(
    MaterialApp.router(
      title: "zap.stream",
      supportedLocales: AppLocaleUtils.supportedLocales,
      localizationsDelegates: GlobalMaterialLocalizations.delegates,
      theme: ThemeData.localize(
        ThemeData(
          colorScheme: ColorScheme.dark(),
          highlightColor: PRIMARY_1,
          useMaterial3: true,
        ),
        TextTheme(),
      ),
      routerConfig: GoRouter(
        redirect: (context, state) {
          // redirect back to the wallet settings page
          if (state.uri.scheme == "zswc") {
            return "/settings/wallet";
          }
          return null;
        },
        routes: [
          ShellRoute(
            observers: [routeObserver],
            builder:
                (context, state, child) => SafeArea(
                  child: Scaffold(body: child, backgroundColor: Colors.black),
                ),
            routes: [
              GoRoute(path: "/", builder: (ctx, state) => HomePage()),
              ShellRoute(
                builder: (context, state, child) {
                  return Container(
                    margin: EdgeInsets.only(top: 50),
                    padding: EdgeInsets.symmetric(horizontal: 5),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      spacing: 20,
                      children: [
                        Center(
                          child: Image.asset("assets/logo.png", height: 150),
                        ),
                        child,
                      ],
                    ),
                  );
                },
                routes: [
                  GoRoute(
                    path: "/login",
                    builder: (ctx, state) => LoginPage(),
                    routes: [
                      GoRoute(
                        path: "key",
                        builder: (ctx, state) => LoginInputPage(),
                      ),
                      GoRoute(
                        path: "new",
                        builder: (context, state) => NewAccountPage(),
                      ),
                    ],
                  ),
                ],
              ),
              GoRoute(
                path: StreamPage.path,
                builder: (ctx, state) {
                  if (state.extra is StreamEvent) {
                    return StreamPage(stream: state.extra as StreamEvent);
                  } else {
                    return StreamPage.loader(state.pathParameters["id"]!);
                  }
                },
              ),
              GoRoute(
                path: "/p/:id",
                builder: (ctx, state) {
                  return ProfilePage(pubkey: state.pathParameters["id"]!);
                },
              ),
              GoRoute(
                path: "/t/:id",
                builder: (context, state) {
                  return HashtagPage(tag: state.pathParameters["id"]!);
                },
              ),
              GoRoute(
                path: "/category/:id",
                builder: (context, state) {
                  return CategoryPage(
                    category: state.pathParameters["id"]!,
                    info: state.extra as GameInfo?,
                  );
                },
              ),
              ShellRoute(
                builder:
                    (context, state, child) =>
                        Column(children: [HeaderWidget(), child]),
                routes: [
                  GoRoute(
                    path: "/settings",
                    builder: (context, state) => SettingsPage(),
                    routes: [
                      GoRoute(
                        path: "profile",
                        builder: (context, state) => SettingsProfilePage(),
                      ),
                      GoRoute(
                        path: "wallet",
                        builder: (context, state) => SettingsWalletPage(),
                      ),
                    ],
                  ),
                ],
              ),
              GoRoute(
                path: "/live",
                builder: (context, state) => LivePage(),
              ),
              GoRoute(
                path: "/:id",
                redirect: (context, state) async {
                  final id = state.pathParameters["id"]!;
                  if (id.startsWith("naddr1") ||
                      id.startsWith("nevent1") ||
                      id.startsWith("note1")) {
                    return "/e/$id";
                  } else if (id.startsWith("npub1") ||
                      id.startsWith("nprofile1")) {
                    return "/p/$id";
                  } else {
                    // Handle short URL format (handle@domain or just handle)
                    try {
                      final handleParts = id.contains("@") 
                          ? id.split("@") 
                          : [id, "zap.stream"];
                      
                      if (handleParts.length == 2) {
                        final handle = handleParts[0];
                        final domain = handleParts[1];
                        
                        // Try to resolve NIP-05
                        final hexPubkey = await resolveNip05(handle, domain);
                        if (hexPubkey != null) {
                          // Check if they have a current live stream
                          // For now, redirect to profile - we could enhance this later
                          // to check for active streams and redirect to /e/{stream_id} instead
                          final npub = Nip19.encodePubKey(hexPubkey);
                          return "/p/$npub";
                        }
                      }
                    } catch (e) {
                      // If NIP-05 resolution fails, continue to show 404 or fallback
                    }
                  }
                  return null;
                },
              ),
            ],
          ),
        ],
      ),
    ),
  );
}