import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:relationship_saver/core/config/app_theme.dart';
import 'package:relationship_saver/features/shared/frosted_card.dart';
import 'package:relationship_saver/features/signals/domain/signals_feed_synthesizer.dart';
import 'package:relationship_saver/features/signals/signals_controller.dart';
import 'package:relationship_saver/integrations/backend/models/backend_models.dart';

class SignalsView extends ConsumerWidget {
  const SignalsView({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final AsyncValue<SignalsFeed> signals = ref.watch(
      signalsControllerProvider,
    );

    return LayoutBuilder(
      builder: (BuildContext context, BoxConstraints constraints) {
        final bool compact = constraints.maxWidth < 760;
        return Padding(
          padding: EdgeInsets.fromLTRB(
            compact ? 16 : 28,
            compact ? 16 : 24,
            compact ? 16 : 28,
            compact ? 20 : 28,
          ),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: <Widget>[
              if (compact)
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(
                      'Signals',
                      style: Theme.of(context).textTheme.headlineMedium,
                    ),
                    const SizedBox(height: 6),
                    Text(
                      'Local and backend suggestions you can turn into follow-through.',
                      style: Theme.of(context).textTheme.bodyLarge?.copyWith(
                        color: AppTheme.textSecondary,
                      ),
                    ),
                    const SizedBox(height: 10),
                    IconButton.filledTonal(
                      onPressed: () {
                        ref.read(signalsControllerProvider.notifier).refresh();
                      },
                      icon: const Icon(Icons.refresh_rounded),
                      tooltip: 'Refresh feed',
                    ),
                  ],
                )
              else
                Row(
                  children: <Widget>[
                    Expanded(
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: <Widget>[
                          Text(
                            'Signals',
                            style: Theme.of(context).textTheme.headlineMedium,
                          ),
                          const SizedBox(height: 6),
                          Text(
                            'Local and backend suggestions you can turn into follow-through.',
                            style: Theme.of(context).textTheme.bodyLarge
                                ?.copyWith(color: AppTheme.textSecondary),
                          ),
                        ],
                      ),
                    ),
                    IconButton.filledTonal(
                      onPressed: () {
                        ref.read(signalsControllerProvider.notifier).refresh();
                      },
                      icon: const Icon(Icons.refresh_rounded),
                      tooltip: 'Refresh feed',
                    ),
                  ],
                ),
              const SizedBox(height: 16),
              Expanded(
                child: signals.when(
                  data: (SignalsFeed feed) {
                    if (feed.items.isEmpty) {
                      return const Center(child: Text('No signals right now.'));
                    }

                    return ListView.separated(
                      itemCount: feed.items.length,
                      separatorBuilder: (_, _) => const SizedBox(height: 12),
                      itemBuilder: (BuildContext context, int index) {
                        final SignalItem item = feed.items[index];
                        return FrostedCard(
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: <Widget>[
                              Row(
                                children: <Widget>[
                                  Container(
                                    padding: const EdgeInsets.symmetric(
                                      horizontal: 10,
                                      vertical: 6,
                                    ),
                                    decoration: BoxDecoration(
                                      color: const Color(0xFFEAF8FB),
                                      borderRadius: BorderRadius.circular(99),
                                    ),
                                    child: Text(
                                      item.type.toUpperCase(),
                                      style: Theme.of(context)
                                          .textTheme
                                          .labelMedium
                                          ?.copyWith(
                                            color: AppTheme.primary,
                                            fontWeight: FontWeight.w700,
                                          ),
                                    ),
                                  ),
                                  const Spacer(),
                                  Text(
                                    '${item.createdAt.month}/${item.createdAt.day}',
                                    style: Theme.of(context).textTheme.bodySmall
                                        ?.copyWith(
                                          color: AppTheme.textSecondary,
                                        ),
                                  ),
                                ],
                              ),
                              const SizedBox(height: 12),
                              Text(
                                item.title,
                                style: Theme.of(context).textTheme.titleLarge,
                              ),
                              if (item.description
                                  case final String description)
                                Padding(
                                  padding: const EdgeInsets.only(top: 6),
                                  child: Text(
                                    description,
                                    style: Theme.of(context).textTheme.bodyLarge
                                        ?.copyWith(
                                          color: AppTheme.textSecondary,
                                        ),
                                  ),
                                ),
                              if (item.metadata?[signalMetadataPersonNameKey]
                                  case final String personName)
                                Padding(
                                  padding: const EdgeInsets.only(top: 8),
                                  child: Text(
                                    personName,
                                    style: Theme.of(context)
                                        .textTheme
                                        .labelLarge
                                        ?.copyWith(
                                          color: AppTheme.textSecondary,
                                        ),
                                  ),
                                ),
                              const SizedBox(height: 14),
                              Wrap(
                                spacing: 8,
                                runSpacing: 6,
                                children: <Widget>[
                                  OutlinedButton.icon(
                                    onPressed: () {
                                      ref
                                          .read(
                                            signalsControllerProvider.notifier,
                                          )
                                          .acknowledge(
                                            item.id,
                                            SignalAction.saved,
                                          );
                                    },
                                    icon: Icon(_primaryActionIcon(item)),
                                    label: Text(_primaryActionLabel(item)),
                                  ),
                                  TextButton.icon(
                                    onPressed: () {
                                      ref
                                          .read(
                                            signalsControllerProvider.notifier,
                                          )
                                          .acknowledge(
                                            item.id,
                                            SignalAction.dismissed,
                                          );
                                    },
                                    icon: const Icon(Icons.close_rounded),
                                    label: const Text('Dismiss'),
                                  ),
                                ],
                              ),
                            ],
                          ),
                        );
                      },
                    );
                  },
                  error: (Object error, StackTrace stackTrace) {
                    return Center(
                      child: Text(
                        'Unable to load signals. Try refresh.',
                        style: Theme.of(context).textTheme.bodyLarge,
                      ),
                    );
                  },
                  loading: () =>
                      const Center(child: CircularProgressIndicator()),
                ),
              ),
            ],
          ),
        );
      },
    );
  }
}

String _primaryActionLabel(SignalItem item) {
  if (item.metadata?[signalMetadataActionKey] == createReminderSignalAction) {
    return 'Create Reminder';
  }
  return 'Save';
}

IconData _primaryActionIcon(SignalItem item) {
  if (item.metadata?[signalMetadataActionKey] == createReminderSignalAction) {
    return Icons.notifications_active_outlined;
  }
  return Icons.bookmark_add_outlined;
}