fix tag parameter conversion; lead image generation; add complex item test;

PocketSharp.Tests/AddTests.cs

@@ -22,5 +22,34 @@ namespace PocketSharp.Tests
 
       itemsToDelete.Add(item.ID);
     }
+
+
+    [Fact]
+    public async Task AddComplexItem()
+    {
+      PocketItem item = await client.Add(
+        uri: new Uri("http://frontendplay.com"),
+        tags: new string[] { "blog", "frontend", "cee" },
+        title: "ignored title",
+        tweetID: "380051788172632065"
+      );
+
+      List<PocketItem> items = await client.Retrieve();
+      PocketItem itemDesired = null;
+
+      items.ForEach(itm =>
+      {
+        if(itm.ID == item.ID)
+        {
+          itemDesired = itm;
+        }
+      });
+
+      Assert.NotNull(itemDesired);
+      Assert.Equal(itemDesired.ID, item.ID);
+      Assert.Equal(itemDesired.Tags.Count, 3);
+
+      itemsToDelete.Add(item.ID);
+    }
   }
 }

PocketSharp/Models/Parameters/Parameters.cs

@@ -3,6 +3,8 @@ using System.Collections.Generic;
 using System.Reflection;
 using System.Runtime.Serialization;
 using System.Linq;
+using System.Collections;
+using Newtonsoft.Json;
 
 namespace PocketSharp.Models
 {
@@ -31,11 +33,19 @@ namespace PocketSharp.Models
       {
         DataMemberAttribute attribute = (DataMemberAttribute)propertyInfo.GetCustomAttributes(typeof(DataMemberAttribute‌), false).FirstOrDefault();
         string name = attribute.Name ?? propertyInfo.Name.ToLower();
+        object value = propertyInfo.GetValue(this, null);
 
-        if (propertyInfo.GetValue(this, null) != null)
+        if (value == null)
         {
-          parameterDict.Add(name, propertyInfo.GetValue(this, null).ToString());
+          continue;
         }
+
+        if (value is IEnumerable && value.GetType().GetElementType() == typeof(string))
+        {
+          value = string.Join(",", ((IEnumerable)value).Cast<object>().Select(x => x.ToString()).ToArray());
+        }
+
+        parameterDict.Add(name, value.ToString());
       }
 
       return parameterDict;

PocketSharp/Models/PocketItem.cs

@@ -268,7 +268,7 @@ namespace PocketSharp.Models
     [JsonIgnore]
     public PocketImage LeadImage
     {
-      get { return Images.Count > 0 ? Images[0] : null; }
+      get { return Images != null && Images.Count > 0 ? Images[0] : null; }
     }
 
     /// <summary>