1+ using System . Collections . Generic ;
2+ using System . Configuration ;
3+ using System . Linq ;
4+ using System . Net ;
5+ using System . Threading . Tasks ;
6+ using AngleSharp ;
7+ using AngleSharp . Dom ;
8+ using Configuration = AngleSharp . Configuration ;
9+
10+ namespace TenderView . Trades . TradeDetail
11+ {
12+ public static class TradeDetailWebReceiver
13+ {
14+ private const string DeliveryAddressString = "Место поставки:" ;
15+ private const string PurchaseObjectNameString = "Наименование товара, работ, услуг:" ;
16+ private const string PurchaseObjectUnitNameString = "Единицы измерения:" ;
17+ private const string PurchaseObjectQuantityString = "Количество:" ;
18+ private const string PurchaseObjectPriceForOneString = "Стоимость единицы продукции ( в т.ч. НДС при наличии):" ;
19+
20+ private const string InfoBlockSelector =
21+ "div.informationAboutCustomer__informationPurchase-infoBlock.infoBlock" ;
22+
23+ private const string PurchaseObjectSelector = "div.outputResults__oneResult" ;
24+
25+ private const string PurchaseObjectNameAndCodeAndTypeSelector =
26+ "div.outputResults__oneResult-leftPart.leftPart" ;
27+
28+ private const string PurchaseObjectUnitNameAndQuantitySelector =
29+ "div.outputResults__oneResult-centerPart.centerPart" ;
30+
31+ private const string PurchaseObjectPriceForOneSelector =
32+ "div.outputResults__oneResult-rightPart.rightPart" ;
33+
34+
35+ public static async Task < TradeDetail > GetAsync ( long tradeId )
36+ {
37+ var url = ConfigureAndGetUrl ( tradeId ) ;
38+ var context = BrowsingContext . New ( Configuration . Default . WithDefaultLoader ( ) ) ;
39+ var document = await context . OpenAsync ( url ) ;
40+ var tradeDetail = new TradeDetail ( ParseDeliveryAddress ( document ) , ParsePurchaseObject ( document ) ) ;
41+
42+ return tradeDetail ;
43+ }
44+
45+ private static string ConfigureAndGetUrl ( long tradeId )
46+ {
47+ var url = ConfigurationManager . AppSettings [ "GetTradesDetail" ] ;
48+ if ( string . IsNullOrEmpty ( url ) )
49+ throw new WebException ( "Configuration string null or empty" ) ;
50+
51+ return url . Replace ( "%tradeId%" , tradeId . ToString ( ) ) ;
52+ }
53+
54+
55+ private static List < PurchaseObject > ParsePurchaseObject ( IDocument document )
56+ {
57+ var cells = document . QuerySelectorAll ( PurchaseObjectSelector ) ;
58+ var purchaseObjects = new List < PurchaseObject > ( ) ;
59+ foreach ( var cell in cells )
60+ {
61+ var nameAndCodeAndTypeElement = cell . QuerySelector ( PurchaseObjectNameAndCodeAndTypeSelector ) ;
62+ var unitNameAndQuantityElement = cell . QuerySelector ( PurchaseObjectUnitNameAndQuantitySelector ) ;
63+ var priceForOneElement = cell . QuerySelector ( PurchaseObjectPriceForOneSelector ) ;
64+
65+ var name = ParsePurchaseObjectName ( nameAndCodeAndTypeElement ) ;
66+ var unitName = ParsePurchaseObjectUnitName ( unitNameAndQuantityElement ) ;
67+ var quantity = decimal . Parse ( ParsePurchaseObjectQuantity ( unitNameAndQuantityElement ) ) ;
68+ var priceForOne = decimal . Parse ( ParsePurchaseObjectPriceForOne ( priceForOneElement ) ) ;
69+
70+
71+ name = TrimStartAndEnd ( name ) ;
72+ unitName = TrimStartAndEnd ( unitName ) ;
73+
74+ purchaseObjects . Add ( new PurchaseObject ( name , unitName , quantity , priceForOne ) ) ;
75+ }
76+
77+ return purchaseObjects ;
78+ }
79+
80+ private static string TrimStartAndEnd ( string text )
81+ {
82+ return text . TrimStart ( ) . TrimEnd ( ) ;
83+ }
84+
85+ private static string ParseDeliveryAddress ( IDocument document )
86+ {
87+ var cells = document . QuerySelectorAll ( InfoBlockSelector ) ;
88+
89+ return ( from cell in cells
90+ where cell . Children [ 0 ] . TextContent == DeliveryAddressString
91+ select cell . Children [ 1 ] . TextContent ) . FirstOrDefault ( ) ;
92+ }
93+
94+ private static string ParsePurchaseObjectName ( IElement element )
95+ {
96+ return ( from child in element . Children
97+ where child . Children . Length > 0
98+ where child . Children [ 0 ] . TextContent . Equals ( PurchaseObjectNameString )
99+ select child . ChildNodes [ 2 ] . TextContent ) . FirstOrDefault ( ) ;
100+ }
101+
102+ private static string ParsePurchaseObjectUnitName ( IElement element )
103+ {
104+ return InnerContentFinder ( element , PurchaseObjectUnitNameString ) ;
105+ }
106+
107+ private static string ParsePurchaseObjectQuantity ( IElement element )
108+ {
109+ return InnerContentFinder ( element , PurchaseObjectQuantityString ) ;
110+ }
111+
112+ private static string ParsePurchaseObjectPriceForOne ( IElement element )
113+ {
114+ return InnerContentFinder ( element , PurchaseObjectPriceForOneString ) ;
115+ }
116+
117+ private static string InnerContentFinder ( IElement element , string nameString )
118+ {
119+ return ( from child in element . Children
120+ where child . Children . Length > 0
121+ from childParag in child . Children
122+ where childParag . Children . Length > 0 && childParag . Children [ 0 ] . TextContent . Equals ( nameString )
123+ select childParag . ChildNodes [ 2 ] . TextContent ) . FirstOrDefault ( ) ;
124+ }
125+ }
126+ }
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