Adds query filter implementations

src/Utils/QueryFilter/AttributedQueryFilter.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+using System.Net;
+using System.Reflection;
+using System.Text;
+
+namespace JpnCardsPokemonSdk.Utils.QueryFilter;
+
+public abstract class AttributedQueryFilter : IQueryFilter
+{
+    public string BuildQueryString()
+    {
+        var filterBucket = new List<KeyValuePair<string, string>>();
+
+        var properties = GetType().GetProperties();
+        foreach (var propertyInfo in properties)
+        {
+            var attribute = propertyInfo.GetCustomAttribute<QueryFilterAttribute>();
+
+            if (attribute == null)
+                continue;
+
+            var paramName = attribute.ParamName ?? propertyInfo.Name;
+            var value = propertyInfo.GetValue(this).ToString();
+            if (!string.IsNullOrEmpty(value)) filterBucket.Add(new KeyValuePair<string, string>(paramName, value));
+        }
+
+        var filterBuilder = new StringBuilder();
+        foreach (var keyValuePair in filterBucket)
+            filterBuilder.Append($"&{keyValuePair.Key}={WebUtility.UrlEncode(keyValuePair.Value)}");
+
+        return filterBuilder.ToString().TrimStart('&');
+    }
+}

src/Utils/QueryFilter/CardQueryFilter.cs

@@ -0,0 +1,24 @@
+namespace JpnCardsPokemonSdk.Utils.QueryFilter;
+
+public class CardQueryFilter : AttributedQueryFilter
+{
+    [QueryFilter("id")] public int? Id { get; set; }
+
+    [QueryFilter("name")] public string? Name { get; set; }
+
+    [QueryFilter("set_id")] public int? SetId { get; set; }
+
+    [QueryFilter("illustrator")] public string? Artist { get; set; }
+
+    [QueryFilter("p_no")] public string? PrintedNumber { get; set; }
+
+    [QueryFilter("uuid")] public int? Uuid { get; set; }
+
+    [QueryFilter("rarity")] public string? Rarity { get; set; }
+
+    [QueryFilter("subtype")] public string? Subtype { get; set; }
+
+    [QueryFilter("type")] public string? Type { get; set; }
+
+    [QueryFilter("set_code")] public string? SetCode { get; set; }
+}

src/Utils/QueryFilter/IQueryFilter.cs

@@ -0,0 +1,6 @@
+namespace JpnCardsPokemonSdk.Utils.QueryFilter;
+
+public interface IQueryFilter
+{
+    string BuildQueryString();
+}

src/Utils/QueryFilter/QueryFilterAttribute.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace JpnCardsPokemonSdk.Utils.QueryFilter;
+
+[AttributeUsage(AttributeTargets.Property)]
+public class QueryFilterAttribute : Attribute
+{
+    public QueryFilterAttribute(string? paramName)
+    {
+        ParamName = paramName;
+    }
+
+    public QueryFilterAttribute() : this(null)
+    {
+    }
+
+    public string? ParamName { get; set; }
+}