94 lines
2.3 KiB
Dart
94 lines
2.3 KiB
Dart
/* SPDX-License-Identifier: GPL-3.0-or-later */
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/* Copyright (C) 2024 Marco Groß <mgross@sw-gross.de> */
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import 'dart:convert';
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import 'dart:developer';
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import 'dart:io';
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class FoodFactLookupClient {
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FoodFactLookupClient();
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static const String url = "https://world.openfoodfacts.org/api/v3/product/";
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String getProductUrl(String ean) {
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return "$url$ean.json";
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}
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Future<FoodFactResponse> retrieveFoodInfo(String ean) async {
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HttpClient client = HttpClient();
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String asString = "";
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try {
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var request = await client.getUrl(Uri.parse(getProductUrl(ean)));
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var response = await request.close();
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if (response.statusCode != HttpStatus.ok) {
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return FoodFactResponse(
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food: null, status: FoodFactResponseStatus.barcodeNotFound);
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}
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asString = await response.transform(utf8.decoder).join();
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} on SocketException {
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return FoodFactResponse(
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food: null,
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status: FoodFactResponseStatus.foodFactServerNotReachable);
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} catch (e) {
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log(e.toString());
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} finally {
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client.close();
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}
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return FoodFactResponse(
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food: FoodFactModel.fromJson(jsonDecode(asString)),
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status: FoodFactResponseStatus.ok);
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}
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}
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class FoodFactModel {
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final String name;
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final int kcalPer100g;
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final int kcalPer100gPrepared;
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final int mass;
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FoodFactModel({
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required this.name,
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required this.mass,
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required this.kcalPer100g,
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required this.kcalPer100gPrepared,
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});
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factory FoodFactModel.fromJson(Map<String, dynamic> json) {
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int kcalPer100g = json['product']['nutriments']['energy-kcal_100g'] ?? 0;
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int kcalPer100gPrepared =
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json['product']['nutriments']['energy-kcal_prepared_100g'] ?? 0;
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String quantityString = json['product']['product_quantity'] ?? "0";
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int quantity;
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try {
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quantity = int.parse(quantityString);
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} catch (e) {
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quantity = 0;
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}
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return FoodFactModel(
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name: json['product']['product_name'] ?? "",
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kcalPer100g: kcalPer100g,
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kcalPer100gPrepared: kcalPer100gPrepared,
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mass: quantity);
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}
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}
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enum FoodFactResponseStatus {
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foodFactServerNotReachable,
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barcodeNotFound,
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ok,
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}
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class FoodFactResponse {
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final FoodFactModel? food;
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final FoodFactResponseStatus status;
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FoodFactResponse({required this.food, required this.status});
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}
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