powerage-ristoris-flutter/lib/services/api_service.dart

import 'dart:convert';
import 'package:http/http.dart' as http;
import '../database/daos/parametri_dao.dart';
import '../core/constants.dart';

class ApiService {
  final ParametriDao _parametriDao;

  ApiService(this._parametriDao);

  String? token;

  Future<String> getBaseUrl() async {
    final url = await _parametriDao.read(AppConstants.kUrlParam);
    return url ?? '';
  }

  Future<Map<String, dynamic>> get(String path, {Map<String, String>? queryParams}) async {
    final base = await getBaseUrl();
    final uri = Uri.parse('$base$path').replace(queryParameters: queryParams);
    final response = await http.get(uri, headers: _headers).timeout(const Duration(minutes: 2));
    return jsonDecode(response.body) as Map<String, dynamic>;
  }

  Future<List<dynamic>> getList(String path, {Map<String, String>? queryParams}) async {
    final base = await getBaseUrl();
    final uri = Uri.parse('$base$path').replace(queryParameters: queryParams);
    final response = await http.get(uri, headers: _headers).timeout(const Duration(minutes: 2));
    return jsonDecode(response.body) as List<dynamic>;
  }

  Future<String> getString(String path) async {
    final base = await getBaseUrl();
    final uri = Uri.parse('$base$path');
    final response = await http.get(uri, headers: _headers).timeout(const Duration(minutes: 2));
    return response.body;
  }

  Future<Map<String, dynamic>> post(String path, Map<String, dynamic> body) async {
    final base = await getBaseUrl();
    final uri = Uri.parse('$base$path');
    final response = await http.post(
      uri,
      headers: _headers,
      body: jsonEncode(body),
    ).timeout(const Duration(minutes: 5));
    return jsonDecode(response.body) as Map<String, dynamic>;
  }

  Future<Map<String, dynamic>> postRaw(String path, String body) async {
    final base = await getBaseUrl();
    final uri = Uri.parse('$base$path');
    final response = await http.post(
      uri,
      headers: _headers,
      body: body,
    ).timeout(const Duration(minutes: 5));
    return jsonDecode(response.body) as Map<String, dynamic>;
  }

  Map<String, String> get _headers {
    final headers = <String, String>{
      'Content-Type': 'application/json',
      'Accept': 'application/json',
    };
    final t = token;
    if (t != null && t.isNotEmpty) {
      headers['Authorization'] = 'Bearer $t';
    }
    return headers;
  }
}