import 'package:flutter/material.dart';

import 'package:go_router/go_router.dart';

import 'package:provider/provider.dart';

import 'package:sxchnge_wallet/sxchnge_wallet.dart';

import 'copy.dart';
import 'summary.dart';

import '../generated/i18n/app_localizations.dart';

class OperationPage extends StatefulWidget {
  const OperationPage({super.key, required this.id});
  final String id;
  @override
  State<OperationPage> createState() => _OperationPageState();
}

class _OperationPageState extends State<OperationPage> {
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      if (mounted) context.read<WalletProvider>().refresh();
    });
  }

  @override
  Widget build(BuildContext context) {
    final p = context.watch<WalletProvider>();
    final o = p.operation(widget.id);
    final l = AppLocalizations.of(context)!;
    final t = Theme.of(context);
    final c = t.colorScheme;
    return SingleChildScrollView(
      padding: const EdgeInsets.all(24),
      child: Center(
        child: ConstrainedBox(
          constraints: const BoxConstraints(maxWidth: 640),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Align(
                alignment: Alignment.centerLeft,
                child: TextButton.icon(
                  onPressed: () => context.go('/activity'),
                  icon: const Icon(Icons.arrow_back),
                  label: Text(l.wActivity),
                ),
              ),
              if (p.failed)
                Text(l.wUnavailable, style: TextStyle(color: c.error)),
              if (o == null) ...[
                Text(p.loading ? l.wWorking : l.wNotFound),
                TextButton(
                  onPressed: p.loading ? null : p.refresh,
                  child: Text(l.wRefresh),
                ),
              ] else ...[
                Container(
                  padding: const EdgeInsets.all(28),
                  decoration: BoxDecoration(
                    color: o.status == OperationStatus.failed
                        ? c.errorContainer
                        : c.primaryContainer,
                    borderRadius: BorderRadius.circular(28),
                  ),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Icon(
                        o.status == OperationStatus.completed
                            ? Icons.check_circle_outline
                            : o.status == OperationStatus.pending
                            ? Icons.schedule
                            : Icons.info_outline,
                        size: 40,
                        color: o.status == OperationStatus.failed
                            ? c.onErrorContainer
                            : c.onPrimaryContainer,
                      ),
                      const SizedBox(height: 16),
                      Semantics(
                        header: true,
                        liveRegion: true,
                        child: Text(
                          statusText(l, o.status),
                          key: ValueKey('operation-${o.status.name}'),
                          style: t.textTheme.displaySmall?.copyWith(
                            color: o.status == OperationStatus.failed
                                ? c.onErrorContainer
                                : c.onPrimaryContainer,
                          ),
                        ),
                      ),
                      const SizedBox(height: 16),
                      Text(
                        fundsText(l, o),
                        style: TextStyle(
                          color: o.status == OperationStatus.failed
                              ? c.onErrorContainer
                              : c.onPrimaryContainer,
                        ),
                      ),
                    ],
                  ),
                ),
                const SizedBox(height: 20),
                TransferSummary(quote: o.quote),
                const SizedBox(height: 16),
                Text('${l.wReference}: ${o.id}'),
                if (o.status == OperationStatus.pending) ...[
                  const SizedBox(height: 12),
                  Text(l.wPendingHint),
                  TextButton(
                    onPressed: p.loading ? null : p.refresh,
                    child: Text(l.wRefresh),
                  ),
                ],
                const SizedBox(height: 24),
                if (o.status == OperationStatus.completed &&
                    o.quote.request.kind != TransferKind.payout)
                  FilledButton(
                    onPressed: () => context.go(
                      o.quote.request.kind == TransferKind.topUp
                          ? '/exchange'
                          : '/payout',
                      extra:
                          o.quote.request.destination ?? o.quote.request.source,
                    ),
                    child: Text(
                      o.quote.request.kind == TransferKind.topUp
                          ? l.wExchange
                          : l.wPayout,
                    ),
                  ),
                TextButton(
                  onPressed: () => context.go(
                    '/accounts/${o.quote.request.destination ?? o.quote.request.source}',
                  ),
                  child: Text(l.wViewAccount),
                ),
              ],
            ],
          ),
        ),
      ),
    );
  }
}