import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:nostr_widgets/widgets/widgets.dart';
import 'package:peridot/controllers/repository.dart';
import 'package:peridot/l10n/app_localizations.dart';
import 'package:get/get.dart';
import 'package:intl/intl.dart';
import 'package:nostr_bunker/nostr_bunker.dart';
import 'package:peridot/screens/request/widgets/actions_buttons_view.dart';
import 'package:peridot/screens/request/request_controller.dart';
import 'package:peridot/screens/request/widgets/json_viewer.dart';
import 'package:peridot/screens/request/widgets/kind_3_widget.dart';
import 'package:peridot/screens/request/widgets/warning_banner_view.dart';
import 'package:peridot/routes/app_routes.dart';
import 'package:peridot/utils/nostr_kinds.dart';
import 'package:peridot/widgets/responsive_list_view.dart'
    show responsiveHorizontalPadding;
import 'package:peridot/widgets/status_chip.dart';

class RequestPage extends StatelessWidget {
  const RequestPage({super.key});

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;
    return GetBuilder(
      init: RequestController(),
      builder: (c) {
        if (c.request == null) return Scaffold();

        return Scaffold(
          appBar: AppBar(
            title: MouseRegion(
              cursor: SystemMouseCursors.click,
              child: GestureDetector(
                onTap: () => _navigateToApp(c.app!),
                child: Row(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    Flexible(
                      child: Text(
                        c.app?.name ?? l10n.deletedApp,
                        overflow: TextOverflow.ellipsis,
                      ),
                    ),
                    SizedBox(width: 4),
                    Icon(Icons.open_in_new, size: 16),
                  ],
                ),
              ),
            ),
            actions: [
              StatusChip(status: c.request!.status),
              SizedBox(width: 8),
              MouseRegion(
                cursor: SystemMouseCursors.click,
                child: GestureDetector(
                  onTap: () => _navigateToApp(c.app!),
                  child: NPicture(
                    ndk: Repository.ndk,
                    pubkey: c.app!.userPubkey,
                  ),
                ),
              ),
              SizedBox(width: 12),
            ],
          ),
          body: LayoutBuilder(
            builder: (context, constraints) {
              final horizontalPadding = responsiveHorizontalPadding(
                constraints.maxWidth,
              );
              return Stack(
                children: [
                  ListView(
                    padding: EdgeInsets.symmetric(
                      horizontal: 12 + horizontalPadding,
                    ),
                    children: [
                      if (!c.request!.originalRequest.useNip44)
                        Padding(
                          padding: const EdgeInsets.only(bottom: 8),
                          child: WarningBannerView(
                            title: l10n.deprecatedEncryptionWarning,
                            subtitle: l10n.deprecatedEncryptionWarningMessage,
                          ),
                        ),
                      if (c.request!.originalRequest.bunkerPubkey ==
                          c.app!.userPubkey)
                        Padding(
                          padding: const EdgeInsets.only(bottom: 8),
                          child: WarningBannerView(
                            title: l10n.metadataLeakWarning,
                            subtitle: l10n.metadataLeakWarningMessage,
                          ),
                        ),
                      Align(
                        alignment: Alignment.topRight,
                        child: Text(
                          DateFormat.yMMMMd(
                            Get.locale,
                          ).add_Hms().format(c.request!.date),
                          style: TextStyle(
                            color: Theme.of(context).disabledColor,
                          ),
                        ),
                      ),
                      SizedBox(height: 8),
                      Text(
                        l10n.commandLabel(
                          c.request!.originalRequest.commandString,
                        ),
                        style: Theme.of(context).textTheme.titleLarge,
                      ),
                      if (c.request!.originalRequest.command ==
                          Nip46Commands.signEvent)
                        Builder(
                          builder: (context) {
                            try {
                              final eventJson = jsonDecode(
                                c.request!.originalRequest.params.first,
                              );
                              final kind = eventJson['kind'] as int?;
                              if (kind != null) {
                                final kindDescription =
                                    NostrKinds.getDescription(context, kind);
                                return Padding(
                                  padding: const EdgeInsets.only(top: 4),
                                  child: Text(
                                    l10n.kindLabel(kindDescription),
                                    style: Theme.of(context).textTheme.bodyLarge
                                        ?.copyWith(
                                          color: Theme.of(
                                            context,
                                          ).colorScheme.primary,
                                        ),
                                  ),
                                );
                              }
                            } catch (e) {
                              // If parsing fails, don't show anything
                            }
                            return SizedBox.shrink();
                          },
                        ),
                      SizedBox(height: 8),
                      if (c.request!.originalRequest.command ==
                              Nip46Commands.signEvent &&
                          (() {
                            try {
                              final eventJson = jsonDecode(
                                c.request!.originalRequest.params.first,
                              );
                              return eventJson['kind'] == 3;
                            } catch (e) {
                              return false;
                            }
                          })())
                        Kind3Widget(
                          eventJson: c.request!.originalRequest.params.first,
                          userPubkey: c.app!.userPubkey,
                        ),
                      Text(
                        l10n.params,
                        style: Theme.of(context).textTheme.titleLarge,
                      ),
                      if (c.request!.originalRequest.command !=
                          Nip46Commands.signEvent)
                        ...c.request!.originalRequest.params.map(
                          (param) => SelectableText(param),
                        ),
                      if (c.request!.originalRequest.command ==
                          Nip46Commands.signEvent)
                        JsonViewer(
                          json: c.request!.originalRequest.params.first,
                        ),
                      SizedBox(height: kToolbarHeight * 2),
                    ],
                  ),
                  if (c.isRequestPending)
                    Positioned(
                      right: 12 + horizontalPadding,
                      left: 12 + horizontalPadding,
                      bottom: 12,
                      child: ActionsButtonsView(),
                    ),
                ],
              );
            },
          ),
        );
      },
    );
  }

  void _navigateToApp(App app) {
    Get.toNamed(AppRoutes.manageApp.replaceAll(':appPubkey', app.appPubkey));
  }
}