1+ using System ;
2+ using System . Collections . Generic ;
3+ using System . Text . Json ;
4+ using System . Text . Json . Serialization ;
5+ using OpenFeature . Model ;
6+
7+ namespace OpenFeature . Contrib . Providers . Flipt . Converters ;
8+
9+ /// <summary>
10+ /// OpenFeature Value type converter
11+ /// </summary>
12+ public class OpenFeatureValueConverter : JsonConverter < Value >
13+ {
14+ /// <inheritdoc />
15+ public override Value Read ( ref Utf8JsonReader reader , Type typeToConvert , JsonSerializerOptions options )
16+ {
17+ var value = new Value ( ) ;
18+ switch ( reader . TokenType )
19+ {
20+ case JsonTokenType . String :
21+ return reader . TryGetDateTime ( out var dateTimeValue )
22+ ? new Value ( dateTimeValue )
23+ : new Value ( reader . GetString ( ) ?? string . Empty ) ;
24+ case JsonTokenType . True :
25+ case JsonTokenType . False :
26+ return new Value ( reader . GetBoolean ( ) ) ;
27+ case JsonTokenType . Number :
28+ if ( reader . TryGetInt32 ( out var intValue ) ) return new Value ( intValue ) ;
29+ if ( reader . TryGetDouble ( out var dblValue ) ) return new Value ( dblValue ) ;
30+ break ;
31+ case JsonTokenType . StartArray :
32+ return new Value ( GenerateValueArray ( ref reader , typeToConvert , options ) ) ;
33+ case JsonTokenType . StartObject :
34+ return new Value ( GetStructure ( ref reader , typeToConvert , options ) ) ;
35+ }
36+
37+ return value ;
38+ }
39+
40+ private Structure GetStructure ( ref Utf8JsonReader reader , Type typeToConvert , JsonSerializerOptions options )
41+ {
42+ var startDepth = reader . CurrentDepth ;
43+ var structureDictionary = new Dictionary < string , Value > ( ) ;
44+ while ( reader . Read ( ) )
45+ {
46+ if ( reader . TokenType == JsonTokenType . PropertyName )
47+ {
48+ var key = reader . GetString ( ) ;
49+ reader . Read ( ) ;
50+ var val = Read ( ref reader , typeToConvert , options ) ;
51+ structureDictionary [ key ?? string . Empty ] = val ;
52+ }
53+
54+ if ( reader . TokenType == JsonTokenType . EndObject && reader . CurrentDepth == startDepth ) break ;
55+ }
56+
57+ return new Structure ( structureDictionary ) ;
58+ }
59+
60+
61+ private IList < Value > GenerateValueArray ( ref Utf8JsonReader reader , Type typeToConvert ,
62+ JsonSerializerOptions options )
63+ {
64+ var valuesArray = new List < Value > ( ) ;
65+ var startDepth = reader . CurrentDepth ;
66+
67+ while ( reader . Read ( ) )
68+ switch ( reader . TokenType )
69+ {
70+ case JsonTokenType . EndArray when reader . CurrentDepth == startDepth :
71+ return valuesArray ;
72+ default :
73+ valuesArray . Add ( Read ( ref reader , typeToConvert , options ) ) ;
74+ break ;
75+ }
76+
77+ return valuesArray ;
78+ }
79+
80+ /// <inheritdoc />
81+ public override void Write ( Utf8JsonWriter writer , Value value , JsonSerializerOptions options )
82+ {
83+ if ( value . IsList )
84+ {
85+ writer . WriteStartArray ( ) ;
86+ foreach ( var val in value . AsList ! )
87+ {
88+ var jsonDoc = JsonDocument . Parse ( JsonSerializer . Serialize ( val . AsObject ,
89+ JsonConverterExtensions . DefaultSerializerSettings ) ) ;
90+ jsonDoc . WriteTo ( writer ) ;
91+ }
92+
93+ writer . WriteEndArray ( ) ;
94+ }
95+ else
96+ {
97+ var jsonDoc = JsonDocument . Parse ( JsonSerializer . Serialize ( value . AsObject ,
98+ JsonConverterExtensions . DefaultSerializerSettings ) ) ;
99+ jsonDoc . WriteTo ( writer ) ;
100+ }
101+ }
102+ }
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