fix: update dart off server

bin/dart_off_server.dart

@@ -1,4 +1,4 @@
-import 'package:dart_off_server/core.dart' as openfood;
+import 'package:dart_off_server/core.dart' as core;
 import 'package:alfred/alfred.dart';
 import 'dart:io';
 import 'package:openfoodfacts/openfoodfacts.dart';
@@ -11,7 +11,7 @@ void main(List<String> arguments) async  {
   } else {
     port = int.tryParse(arguments.first) ?? 6565;
   }
-  openfood.mkConfiguration();
+  core.mkConfiguration();
   final app = Alfred();
 
   // print line
@@ -42,12 +42,16 @@ void main(List<String> arguments) async  {
 
   app.get('/food/search', (req, res) {
     final query = req.uri.queryParameters;
-    return openfood.search(query).then((value) {
+    return core.search(query).then((value) {
       res.json(value);
     }).catchError((error) {
       res.json(error);
     });
   });
 
+  app.get('/steam', (req, res) {
+    return core.findTopSteamSellers();
+  });
+
   await app.listen(port); //Listening on port 6565
 }

lib/core.dart

@@ -1,4 +1,9 @@
 import 'package:openfoodfacts/openfoodfacts.dart';
+import 'package:http/http.dart' as http;
+// ignore_for_file: constant_identifier_names
+import 'package:beautiful_soup_dart/beautiful_soup.dart';
+import './types.dart';
+
 
 Future<SearchResult> search(Map<String, String> query) {
   var parametersList = <Parameter>[];
@@ -98,3 +103,49 @@ void mkConfiguration() {
 
   OpenFoodAPIConfiguration.globalCountry = OpenFoodFactsCountry.CANADA;
 }
+
+
+// function that scans for top steam charts
+
+Future<List<SteamTopSeller>> findTopSteamSellers() async {
+  var url = Uri.https('store.steampowered.com', 'search/?filter=topsellers');
+  var html = await http.get(url);
+  return parseSteamTopSellers(html.body);
+}
+
+List<SteamTopSeller> parseSteamTopSellers(String rawHTML ) {
+  BeautifulSoup  soup = BeautifulSoup(rawHTML);
+  var searchResultsDiv = soup.find('div', attrs: {'id': 'search_resultsRows'});
+  if (searchResultsDiv == null) {
+    return <SteamTopSeller>[];
+  }
+  var topSellers = searchResultsDiv.findAll('a');
+
+  if (topSellers.isEmpty) {
+    return <SteamTopSeller>[];
+  }
+  var topSellersList = <SteamTopSeller>[];
+  for (var topSeller in topSellers) {
+    var imageDiv = topSeller.find('img');
+    String? imageSrc = '';
+    if (imageDiv != null) {
+      imageSrc = imageDiv.attributes['src'];
+    }
+    var title = topSeller.find('span', attrs: {'class': 'title'})?.text;
+    var publishDate = topSeller.find('div', attrs: {'class': 'col search_released responsive_secondrow'})?.text;
+    // var publishDate = topSeller.find('div', attrs: {'class': 'tab_item_top_tags'}).text;
+    // get data-price-final
+    var price = topSeller.find('div', attrs: {'class': 'search_price_discount_combined'})?.attributes['data-price-final'];
+    var discountDiv = topSeller.find('div', attrs: {'class': 'search_discount'});
+    String discount = "";
+    if (discountDiv != null) {
+      var discountSpan = discountDiv.find("span");
+      if (discountSpan != null) {
+        discount = discountSpan.text;
+      }
+    }
+    topSellersList.add(SteamTopSeller(imageSrc, title, price, publishDate, discount));
+  }
+
+  return topSellersList;
+}

lib/types.dart

@@ -0,0 +1,28 @@
+class SteamTopSeller {
+  String? imageSrc;
+  String? title;
+  String? price;
+  String? publishDate;
+  String? discount;
+
+
+  SteamTopSeller(this.imageSrc, this.title, this.price, this.publishDate, this.discount);
+
+  fromJson(Map<String, dynamic> json) {
+    this.imageSrc = json['imageSrc'];
+    this.title = json['title'];
+    this.price = json['price'];
+    this.publishDate = json['publishDate'];
+    this.discount = json['discount'];
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'imageSrc': this.imageSrc,
+      'title': this.title,
+      'price': this.price,
+      'publishDate': this.publishDate,
+      'discount': this.discount,
+    };
+  }
+}

pubspec.lock

@@ -36,6 +36,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.9.0"
+  beautiful_soup_dart:
+    dependency: "direct main"
+    description:
+      name: beautiful_soup_dart
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -71,6 +78,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.2"
+  csslib:
+    dependency: transitive
+    description:
+      name: csslib
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.17.2"
   file:
     dependency: transitive
     description:
@@ -92,8 +106,15 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.1"
-  http:
+  html:
     dependency: transitive
+    description:
+      name: html
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.15.1"
+  http:
+    dependency: "direct main"
     description:
       name: http
       url: "https://pub.dartlang.org"

pubspec.yaml

@@ -8,6 +8,8 @@ environment:
 
 dependencies:
   alfred: ^1.0.0+1
+  beautiful_soup_dart: ^0.3.0
+  http: ^0.13.5
   openfoodfacts: ^2.2.1
 
 dev_dependencies:

test/core_test.dart

@@ -0,0 +1,17 @@
+// load sample.html and run findTopSteamSellers, expect list of top steam sellers
+import 'dart:io';
+import 'package:test/test.dart';
+import "package:dart_off_server/core.dart" as core;
+import "package:path/path.dart" as p;
+
+void main() {
+  test('calculate', () {
+      var rawHTMLPath = p.join(p.current, 'test', 'sample.html');
+      // load rawHTML from rawHTMLPath
+      File file = File(rawHTMLPath);
+      var rawHTML = file.readAsStringSync();
+      var steamSellers = core.parseSteamTopSellers(rawHTML);
+      // greater than 5
+      expect(steamSellers.length, greaterThan(5));
+  });
+}