import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

class RekapanPage extends StatefulWidget {
  final String token;

  const RekapanPage({super.key, required this.token});

  @override
  State<RekapanPage> createState() => _RekapanPageState();
}

class _RekapanPageState extends State<RekapanPage> {
  List<dynamic> bookings = [];
  bool isLoading = false;

  final List<String> namaBulan = [
    '',
    'Januari', 'Februari', 'Maret', 'April', 'Mei', 'Juni',
    'Juli', 'Agustus', 'September', 'Oktober', 'November', 'Desember',
  ];

  final Color primaryColor = const Color(0xFFF06292);
  final Color backgroundColor = const Color(0xFFFFF6F9);

  @override
  void initState() {
    super.initState();
    fetchBookings();
  }

  Future<void> fetchBookings() async {
    setState(() => isLoading = true);
    try {
      final response = await http.get(
        Uri.parse('http://angeliasalon.my.id/api/bookings'),
        headers: {
          'Authorization': 'Bearer ${widget.token}',
          'Accept': 'application/json',
        },
      );

      if (response.statusCode == 200) {
        final data = json.decode(response.body);
        setState(() {
          bookings = data;
          isLoading = false;
        });
      } else {
        throw Exception('Gagal memuat data booking');
      }
    } catch (e) {
      setState(() => isLoading = false);
      _showErrorSnackBar('Error: $e');
    }
  }

  void _showErrorSnackBar(String message) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text(message), backgroundColor: Colors.red.shade600),
    );
  }

  Map<String, Map<String, int>> getYearlyMonthlyRecap() {
  final now = DateTime.now();
  Map<String, Map<String, int>> result = {};

  for (int month = 1; month <= 12; month++) {
    final label = '${namaBulan[month]} ${now.year}';
    result[label] = {};
  }

  for (var booking in bookings) {
    // Lewati jika status booking ditolak
    if (booking['status']?.toLowerCase() == 'ditolak') continue;

    final tanggalStr = booking['tanggal_booking'];
    if (tanggalStr == null) continue;

    DateTime bookingDate;
    try {
      bookingDate = DateTime.parse(tanggalStr);
    } catch (_) {
      continue;
    }

    if (bookingDate.year == now.year) {
      final label = '${namaBulan[bookingDate.month]} ${bookingDate.year}';
      final layanan = booking['service']?['name'] ?? 'Tidak diketahui';
      result[label]![layanan] = (result[label]![layanan] ?? 0) + 1;
    }
  }

  return result;
}


  @override
  Widget build(BuildContext context) {
    final recapData = getYearlyMonthlyRecap();

    return Scaffold(
      backgroundColor: backgroundColor,
      appBar: AppBar(
        title: const Text('Rekapan Booking Tahunan'),
        backgroundColor: primaryColor,
        foregroundColor: Colors.white,
        actions: [
          IconButton(
            onPressed: fetchBookings,
            icon: const Icon(Icons.refresh),
            tooltip: 'Refresh',
          )
        ],
      ),
      body: isLoading
          ? const Center(child: CircularProgressIndicator())
          : bookings.isEmpty
              ? const Center(child: Text('Tidak ada data booking'))
              : RefreshIndicator(
                  onRefresh: fetchBookings,
                  child: ListView.builder(
                    padding: const EdgeInsets.all(16),
                    itemCount: recapData.length,
                    itemBuilder: (context, index) {
                      final key = recapData.keys.elementAt(index);
                      final data = recapData[key]!;

                      return Container(
                        width: double.infinity,
                        margin: const EdgeInsets.only(bottom: 16),
                        decoration: BoxDecoration(
                          color: Colors.white,
                          borderRadius: BorderRadius.circular(16),
                          boxShadow: [
                            BoxShadow(
                              color: Colors.pink.shade100,
                              blurRadius: 6,
                              offset: const Offset(0, 2),
                            )
                          ],
                        ),
                        child: Padding(
                          padding: const EdgeInsets.all(16),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Text(
                                '📅 $key',
                                style: TextStyle(
                                  fontSize: 18,
                                  fontWeight: FontWeight.bold,
                                  color: primaryColor,
                                ),
                              ),
                              const SizedBox(height: 12),
                              data.isEmpty
                                  ? const Center(
                                      child: Padding(
                                        padding: EdgeInsets.symmetric(vertical: 16),
                                        child: Text(
                                          'Belum ada booking di bulan ini.',
                                          style: TextStyle(
                                            color: Colors.black54,
                                            fontStyle: FontStyle.italic,
                                          ),
                                        ),
                                      ),
                                    )
                                  : Column(
                                      crossAxisAlignment: CrossAxisAlignment.start,
                                      children: data.entries.map((e) {
                                        return Padding(
                                          padding: const EdgeInsets.symmetric(vertical: 4),
                                          child: Text(
                                            '• ${e.key}: ${e.value} booking',
                                            style: const TextStyle(
                                              fontSize: 16,
                                              color: Colors.black87,
                                            ),
                                          ),
                                        );
                                      }).toList(),
                                    ),
                            ],
                          ),
                        ),
                      );
                    },
                  ),
                ),
    );
  }
}