import 'dart:convert';
import 'package:http/http.dart' as http;
import '../core/constants.dart';
import '../models/booking.dart';
import 'auth_service.dart';
import 'booking_repository.dart';

export 'booking_repository.dart';

class BookingService implements BookingRepository {
  final _auth = AuthService();

  Future<Map<String, String>> _headers() async {
    final token = await _auth.getToken();
    return {
      if (token != null) 'Authorization': 'Bearer $token',
      'Accept': 'application/json',
    };
  }

  @override
  Future<List<BookingActivity>> activities() async {
    final res = await http.get(
      Uri.parse('$kApiBase/activities/book'),
      headers: await _headers(),
    );
    if (res.statusCode == 200) {
      final list = jsonDecode(res.body) as List<dynamic>;
      return list
          .map((e) => BookingActivity.fromJson(e as Map<String, dynamic>))
          .toList();
    }
    throw Exception('Error ${res.statusCode}');
  }

  @override
  Future<BookingGrid> grid({required int activityId, required String date}) async {
    final uri = Uri.parse('$kApiBase/booking-admin/grid').replace(
      queryParameters: {
        'fk_i_activity_id': activityId.toString(),
        'd_date': date,
      },
    );
    final res = await http.get(uri, headers: await _headers());
    if (res.statusCode == 200) {
      return BookingGrid.fromJson(jsonDecode(res.body) as Map<String, dynamic>);
    }
    throw Exception('Error ${res.statusCode}');
  }

  @override
  Future<BookingDetail?> singleBooking({
    required int activityId,
    required String date,
    required int slotIndex,
    required int courtIndex,
  }) async {
    final uri =
        Uri.parse('$kApiBase/booking-admin/single').replace(queryParameters: {
      'fk_i_activity_id': activityId.toString(),
      'd_date': date,
      'hour': slotIndex.toString(),
      'aPos[1]': courtIndex.toString(),
    });
    final res = await http.get(uri, headers: await _headers());
    if (res.statusCode == 200) {
      final data = jsonDecode(res.body) as Map<String, dynamic>;
      if (data.isEmpty) return null;
      return BookingDetail.fromJson(data);
    }
    return null;
  }
}