DietaryGuard/lib/controllers/food_data.dart

import 'package:dietary_guard/models/food_data.dart';
import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:shared_preferences/shared_preferences.dart';

class FoodDataController extends GetxController {
  RxBool isReady = false.obs;

  late final SharedPreferences _prefs;

  Future<void> initialize(BuildContext context) async {
    if (isReady.value) return;

    _prefs = await SharedPreferences.getInstance();

    isReady.value = true;
  }

  String? getApiKey() {
    return _prefs.getString("data_fdc_api_key");
  }

  Future<void> setApiKey(String value) async {
    await _prefs.setString("data_fdc_api_key", value);
  }

  List<String>? getDataCollections() {
    return _prefs.getStringList("data_enabled_collections");
  }

  Future<void> setDataCollections(List<String> value) async {
    await _prefs.setStringList("data_enabled_collections", value);
  }

  Future<FoodDataQueryResponse> searchFood(String probe) async {
    final client = Dio();
    final resp = await client.get(
      'https://api.nal.usda.gov/fdc/v1/foods/search',
      queryParameters: {
        'query': probe,
        'dataType': getDataCollections()?.join(','),
        'pageSize': 100,
        'pageNumber': 1,
        'sortBy': 'dataType.keyword',
        'sortOrder': 'asc',
        'api_key': getApiKey(),
      },
    );

    final result = FoodDataQueryResponse.fromJson(resp.data);
    return result;
  }
}