import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:dio/dio.dart';
import 'package:nsd/nsd.dart';
import '../../data/services/link_extraction_service.dart';


class SenderState {
  final Service? connectedDevice;
  final bool isExtracting;
  final bool isSending;
  final List<String> history;

  SenderState({
    this.connectedDevice,
    this.isExtracting = false,
    this.isSending = false,
    this.history = const [],
  });

  SenderState copyWith({
    Service? connectedDevice,
    bool? isExtracting,
    bool? isSending,
    List<String>? history,
  }) {
    return SenderState(
      connectedDevice: connectedDevice ?? this.connectedDevice,
      isExtracting: isExtracting ?? this.isExtracting,
      isSending: isSending ?? this.isSending,
      history: history ?? this.history,
    );
  }
}

final senderProvider = NotifierProvider<SenderNotifier, SenderState>(() {
  return SenderNotifier();
});

class SenderNotifier extends Notifier<SenderState> {
  final _dio = Dio();
  final _linkExtractionService = LinkExtractionService();

  @override
  SenderState build() => SenderState();

  void connectToDevice(Service device) {
    state = state.copyWith(connectedDevice: device);
  }

  Future<void> sendLink(String url) async {
    if (state.connectedDevice == null) return;

    state = state.copyWith(isExtracting: true);
    
    final videoUrl = await _linkExtractionService.extractVideoUrl(url);
    
    if (videoUrl == null) {
      state = state.copyWith(isExtracting: false);
      return;
    }

    state = state.copyWith(isExtracting: false, isSending: true);

    try {
      final device = state.connectedDevice!;
      final endpoint = 'http://${device.host}:${device.port}/play';
      
      await _dio.post(endpoint, data: {
        'url': videoUrl,
        'title': 'Shared Video',
        'timestamp': DateTime.now().millisecondsSinceEpoch,
      });

      state = state.copyWith(
        isSending: false,
        history: [url, ...state.history],
      );
    } catch (e) {
      state = state.copyWith(isSending: false);
    }
  }
}