(Ruby) Outlook -- Get Number of Emails

Gets the number of emails in an Outlook folder. This uses the OData $count system query option. See OData System Query Option $count for general information.

This example first gets the combined total number of messages across all folders.

Note: This example requires Chilkat v9.5.0.68 or greater.

Chilkat Ruby Downloads

install from rubygems.org
gem install chilkat
or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

http = Chilkat::CkHttp.new()

# Use your previously obtained access token here:
# See the following examples for getting an access token:
#    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
#    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
#    Refresh Access Token (Azure AD v2.0 Endpoint).
#    Refresh Access Token (Azure AD Endpoint).

http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN")

sbResponse = Chilkat::CkStringBuilder.new()

# This gets the combined total number of emails in all folders.
success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/messages/$count",sbResponse)
if ((success != true) and (http.get_LastStatus() == 0))
    print http.lastErrorText() + "\n";
    exit
end

json = Chilkat::CkJsonObject.new()
json.put_EmitCompact(false)

# If the status code was not 200, then it failed and the response is likely JSON:
if (http.get_LastStatus() != 200)
    print "Status code = " + http.get_LastStatus().to_s() + "\n";
    json.LoadSb(sbResponse)
    print json.emit() + "\n";
    print "Failed." + "\n";
    exit
end

# A success response payload contains just the integer value (it is not JSON)
print "Combined Total Number of Emails = " + sbResponse.getAsString() + "\n";
print "--" + "\n";

# ---------------------------------------------------------------------------
# To get the number of emails in a particular folder, we need to use the folder id.
# 

# In this example, we'd like to get number of messages in the folder "/Inbox/abc",
# but we must specify the corresponding folder_id.  The best way to do this is to create
# a local map of folderPaths-to-folderIds.
# We'll use the map created by this example:  Create Outlook Folder Map)
htFolderMap = Chilkat::CkHashtable.new()
sbMap = Chilkat::CkStringBuilder.new()
sbMap.LoadFile("qa_data/outlook/folderMap.xml","utf-8")
htFolderMap.AddFromXmlSb(sbMap)

# Get the ID for the "/Inbox/abc" folder:
folderId = htFolderMap.lookupStr("/Inbox/abc")
if (htFolderMap.get_LastMethodSuccess() != true)
    print "Folder ID not found" + "\n";
    exit
end

http.SetUrlVar("folder_id",folderId)

# Send the request get the folder information.
# In this case we are NOT using the $count system query option.
success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}",sbResponse)
if ((success != true) and (http.get_LastStatus() == 0))
    print http.lastErrorText() + "\n";
    exit
end

json.LoadSb(sbResponse)
print json.emit() + "\n";
print "--" + "\n";

if (http.get_LastStatus() != 200)
    print "Status code = " + http.get_LastStatus().to_s() + "\n";
    print "Failed." + "\n";
    exit
end

# The successful JSON response looks like this;

# 	{
# 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders/$entity",
# 	  "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA=",
# 	  "displayName": "abc",
# 	  "parentFolderId": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA",
# 	  "childFolderCount": 2,
# 	  "unreadItemCount": 0,
# 	  "totalItemCount": 3
# 	}
# 

# Get the integer value from the JSON like this:
totalItemCount = json.IntOf("totalItemCount")
print "totalItemCount = " + totalItemCount.to_s() + "\n";

childFolderCount = json.IntOf("childFolderCount")
print "childFolderCount = " + childFolderCount.to_s() + "\n";

# etc..