/// <summary>
/// Display the result of the Web API call
/// </summary>
/// <param name="result">Object to display</param>
private static void Display(JsonNode result)
{
Console.WriteLine("Web Api result: \n");
JsonArray nodes = result.AsArray();
foreach (JsonObject aNode in nodes.ToArray())
{
foreach (var property in aNode.ToArray())
{
Console.WriteLine($"{property.Key} = {property.Value?.ToString()}");
}
Console.WriteLine();
}
}
/// <summary>
/// Merges 2 streams of JSON on the property defined by <code>itemName</code>. The property should be a JSON array
/// </summary>
/// <param name="left">The first stream.</param>
/// <param name="right">The second stream.</param>
/// <param name="itemName">The name of the array property to merge on.</param>
/// <param name="nextLinkName">The name of the property containing the next link name.</param>
/// <param name="cancellationToken">The cancellation token.</param>
internal async Task <Stream?> MergeJsonStreamsAsync(Stream?left, Stream?right, string itemName = "value", string nextLinkName = "nextLink", CancellationToken cancellationToken = default)
{
if (left?.CanSeek == true)
{
left?.Seek(0, SeekOrigin.Begin);
}
if (right?.CanSeek == true)
{
right?.Seek(0, SeekOrigin.Begin);
}
if (left == null || right == null)
{
return(left ?? right);
}
JsonNode?nodeLeft = JsonNode.Parse(left);
if (left.CanSeek == true)
{
left.Seek(0, SeekOrigin.Begin);
}
JsonNode?nodeRight = JsonNode.Parse(right);
if (right.CanSeek == true)
{
right.Seek(0, SeekOrigin.Begin);
}
JsonArray?leftArray = null;
JsonArray?rightArray = null;
if (!string.IsNullOrWhiteSpace(itemName))
{
if (nodeLeft?[itemName] == null)
{
return(right);
}
else if (nodeRight?[itemName] == null)
{
return(left);
}
leftArray = nodeLeft[itemName]?.AsArray();
rightArray = nodeRight[itemName]?.AsArray();
}
else
{
leftArray = nodeLeft?.AsArray();
rightArray = nodeRight?.AsArray();
}
if (leftArray != null && rightArray != null)
{
var elements = rightArray.Where(i => i != null);
var item = elements.FirstOrDefault();
while (item != null)
{
rightArray.Remove(item);
leftArray.Add(item);
item = elements.FirstOrDefault();
}
}
if (!string.IsNullOrWhiteSpace(itemName) && nodeLeft != null)
{
nodeLeft[itemName] = leftArray ?? rightArray;
}
else
{
nodeLeft = leftArray ?? rightArray;
}
// Replace next link with new page's next link
if (!string.IsNullOrWhiteSpace(nextLinkName))
{
var obj1 = nodeLeft as JsonObject;
if (obj1?[nextLinkName] != null)
{
obj1.Remove(nextLinkName);
}
if (nodeRight is JsonObject obj2 && obj2?[nextLinkName] != null)
{
var nextLink = obj2[nextLinkName];
obj2.Remove(nextLinkName);
obj1?.Add(nextLinkName, nextLink);
}
}
var stream = new MemoryStream();
using var writer = new Utf8JsonWriter(stream);
nodeLeft?.WriteTo(writer);
await writer.FlushAsync(cancellationToken);
stream.Position = 0;
return(stream);
}
