import 'dart:convert';
import 'package:http/http.dart' as http;
import '../config/api.dart';

class ShareService {
  final http.Client _client;
  
  ShareService({http.Client? client}) : _client = client ?? http.Client();

  Future<Map<String, dynamic>> createShare(String token, double x, double y) async {
    final response = await _client.post(
      Uri.parse(ApiConfig.shareUrl),
      headers: {
        'Content-Type': 'application/json',
        'Authorization': 'Bearer $token',
      },
      body: jsonEncode({'x': x, 'y': y}),
    );
    
    if (response.statusCode == 201) {
      try {
        final data = jsonDecode(response.body) as Map<String, dynamic>;
        return {
          'geo_id': data['geo_id']?.toString() ?? '',
          'share_id': data['share_id']?.toString() ?? '',
        };
      } catch (e) {
        throw Exception('Failed to parse response: $e | Body: ${response.body.substring(0, response.body.length > 200 ? 200 : response.body.length)}');
      }
    } else {
      final errorBody = response.body.length > 200 ? response.body.substring(0, 200) : response.body;
      throw Exception('Failed to create share link: ${response.statusCode} - $errorBody');
    }
  }

  Future<Map<String, dynamic>> getPositionByShareId(String token, String shareId) async {
    final response = await _client.get(
      Uri.parse('${ApiConfig.watchUrl}?share_id=$shareId'),
      headers: {
        'Authorization': 'Bearer $token',
      },
    );
    
    if (response.statusCode == 200) {
      final data = jsonDecode(response.body) as Map<String, dynamic>;
      return {
        'x': data['x'],
        'y': data['y'],
        'last_update': data['last_update']?.toString() ?? '',
        'expires_at': data['expires_at']?.toString() ?? '',
      };
    } else {
      throw Exception('Share link not found or no position available');
    }
  }
}