public async IAsyncEnumerable <string> EnumerateMailsAsync(string address)
{
var messages = await _client.Me.Messages
.Request()
.Filter($"from/emailAddress/address eq '{address}'")
.GetAsync()
.ConfigureAwait(false);
IUserMessagesCollectionRequest nextPageRequest = null;
do
{
nextPageRequest = messages.NextPageRequest;
foreach (var message in messages)
{
_logger.Debug(
$"Reading message from {message.ReceivedDateTime:R} {message.From.EmailAddress.Address} {message.Id}");
yield return(message.Body.Content);
}
if (nextPageRequest != null)
{
messages = await nextPageRequest.GetAsync().ConfigureAwait(false);
}
} while (nextPageRequest != null);
}
/// <summary>
/// Initializes the NextPageRequest property.
/// </summary>
public void InitializeNextPageRequest(IBaseClient client, string nextPageLinkString)
{
if (!string.IsNullOrEmpty(nextPageLinkString))
{
this.NextPageRequest = new UserMessagesCollectionRequest(
nextPageLinkString,
client,
null);
}
}
/// <summary>
/// retrieve the next page of messages
/// </summary>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
/// <returns>the next collection of messages or null if there are no more messages</returns>
public async Task <IUserMessagesCollectionPage> NextPageEmailsAsync(CancellationToken cancellationToken)
{
if (_nextPageRequest != null)
{
var messages = await _nextPageRequest.GetAsync(cancellationToken);
_nextPageRequest = messages.NextPageRequest;
return(messages);
}
// no more messages
return(null);
}
/// <summary>
/// Retrieve current connected user's emails.
/// <para>(default=10)</para>
/// <para>Permission Scope : Mail.Read (Read user mail)</para>
/// </summary>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
/// <param name="top">The number of items to return in a result set.</param>
/// <param name="selectFields">array of fields Microsoft Graph has to include in the response.</param>
/// <returns>a Collection of Pages containing the messages</returns>
public async Task <IUserMessagesCollectionPage> GetEmailsAsync(CancellationToken cancellationToken, int top = 10, MicrosoftGraphMessageFields[] selectFields = null)
{
IUserMessagesCollectionPage messages = null;
if (selectFields == null)
{
messages = await _graphProvider.Me.Messages.Request().Top(top).OrderBy(OrderBy).GetAsync(cancellationToken);
}
else
{
string selectedProperties = MicrosoftGraphHelper.BuildString <MicrosoftGraphMessageFields>(selectFields);
messages = await _graphProvider.Me.Messages.Request().Top(top).OrderBy(OrderBy).Select(selectedProperties).GetAsync();
}
_nextPageRequest = messages.NextPageRequest;
return(messages);
}
//Extension methods for the IPagedCollection interfaces returned
//by the Microsoft.Graph.GraphService
//The GraphServiceExtension methods use these extension methods
//to interact with the IPagedCollection interfaces returned by the
//Microsoft.Graph.GraphService
//public static async Task<TElement[]> GetAllAsnyc<TElement>(
// this IPagedCollection<TElement> pagedCollection)
//{
// var list = new List<TElement>();
// var collection = pagedCollection;
// while (true)
// {
// list.AddRange(collection.CurrentPage);
// if (!collection.MorePagesAvailable) break;
// collection = await collection.GetNextPageAsync();
// }
// return list.ToArray();
//}
public static async Task <Message[]> GetAllAsync(this IUserMessagesCollectionRequest pagedCollectionRq)
{
var list = new List <Message>();
var collectionRequest = pagedCollectionRq;
while (true && collectionRequest != null)
{
var pageList = await collectionRequest.GetAsync();
if (pageList.CurrentPage.Count > 0)
{
list.AddRange(pageList.CurrentPage);
collectionRequest = pageList.NextPageRequest;
}
else
{
break;
}
}
return(list.ToArray());
}
public static IUserMessagesCollectionRequest Search(this IUserMessagesCollectionRequest request, string value)
{
request.QueryOptions.Add(new QueryOption("$search", value));
return(request);
}
