// Create a sharing link for the file if one doesn't already exist.
// See `https://developer.microsoft.com/en-us/graph/docs/api-reference/v1.0/api/item_createlink`.
public async Task <string> CreateSharingLinkForFile(string accessToken, OfficeHoursFileInfo file)
{
string endpoint = $"https://graph.microsoft.com/v1.0/me/drive/items/{ file.Id }/createLink";
OfficeHoursSharingLinkInfo link = new OfficeHoursSharingLinkInfo("view");
using (var client = new HttpClient())
{
using (var request = new HttpRequestMessage(HttpMethod.Post, endpoint))
{
//request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
request.Content = new StringContent(JsonConvert.SerializeObject(link), Encoding.UTF8, "application/json");
using (var response = await client.SendAsync(request))
{
if (response.IsSuccessStatusCode)
{
string stringResult = await response.Content.ReadAsStringAsync();
OfficeHoursPermissionInfo permission = JsonConvert.DeserializeObject <OfficeHoursPermissionInfo>(stringResult);
return(permission.Link.WebUrl);
}
else
{
return("");
}
}
}
}
}
// Create the email message.
public async Task <OfficeHoursMessageRequest> BuildEmailMessage(string accessToken, string recipients, string subject)
{
// Prepare the recipient list.
string[] splitter = { ";" };
string[] splitRecipientsString = recipients.Split(splitter, StringSplitOptions.RemoveEmptyEntries);
List <OfficeHoursRecipient> recipientList = new List <OfficeHoursRecipient>();
foreach (string recipient in splitRecipientsString)
{
recipientList.Add(new OfficeHoursRecipient
{
EmailAddress = new OfficeHoursUserInfo
{
Address = recipient.Trim()
}
});
}
// Get the current user's profile photo (or a test image if no profile photo exists).
using (Stream photo = await GetMyProfilePhoto(accessToken))
{
// Add the photo as a file attachment for the email message.
byte[] photoBytes = null;
using (var memoryStream = new MemoryStream())
{
photo?.CopyTo(memoryStream);
photoBytes = memoryStream.ToArray();
}
List <OfficeHoursAttachment> attachments = new List <OfficeHoursAttachment>();
attachments.Add(new OfficeHoursAttachment
{
ODataType = "#microsoft.graph.fileAttachment",
ContentBytes = photoBytes,
Name = "mypic.jpg"
});
// Upload the photo to the user's root drive and then create a sharing link.
OfficeHoursFileInfo file = await UploadFile(accessToken, photo);
file.SharingLink = await CreateSharingLinkForFile(accessToken, file);
// Add the sharing link to the email body.
string bodyContent = string.Format("Mail Body", file.SharingLink);
// Build the email message.
OfficeHoursMessage message = new OfficeHoursMessage
{
Body = new OfficeHoursItemBody
{
Content = bodyContent,
ContentType = "HTML"
},
Subject = subject,
ToRecipients = recipientList,
Attachments = attachments
};
return(new OfficeHoursMessageRequest
{
Message = message,
SaveToSentItems = true
});
}
}
