import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../providers/user_provider.dart';
import '../../services/pdf_service.dart';
import '../../services/ics_service.dart';

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

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final userProfile = ref.watch(userProfileProvider);
    final cycleEntries = ref.watch(cycleEntriesProvider);

    return Scaffold(
      appBar: AppBar(
        title: const Text('Export Data'),
      ),
      body: userProfile == null
          ? const Center(child: CircularProgressIndicator())
          : ListView(
              padding: const EdgeInsets.all(16.0),
              children: [
                ListTile(
                  leading: const Icon(Icons.picture_as_pdf),
                  title: const Text('Export as PDF'),
                  subtitle: const Text('Generate a printable PDF report of your cycle data.'),
                  trailing: const Icon(Icons.chevron_right),
                  onTap: () async {
                    try {
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('Generating PDF report...')),
                      );
                      await PdfService.generateCycleReport(userProfile, cycleEntries);
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('PDF report generated successfully!')),
                      );
                    } catch (e) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        SnackBar(content: Text('Failed to generate PDF: $e')),
                      );
                    }
                  },
                ),
                ListTile(
                  leading: const Icon(Icons.calendar_month),
                  title: const Text('Export to Calendar File (.ics)'),
                  subtitle: const Text('Generate a calendar file for your cycle dates.'),
                  trailing: const Icon(Icons.chevron_right),
                  onTap: () async {
                    try {
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('Generating ICS file...')),
                      );
                      await IcsService.generateCycleCalendar(cycleEntries);
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('ICS file generated successfully!')),
                      );
                    } catch (e) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        SnackBar(content: Text('Failed to generate ICS file: $e')),
                      );
                    }
                  },
                ),
              ],
            ),
    );
  }
}