(Tcl) Microsoft Teams OAuth2 Client Credentials Authentication

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Demonstrates how to authenticate with OAuth 2.0 using the client credentials grant type.

Note: This example uses the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.

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load ./chilkat.dll

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

set http [new_CkHttp]

# Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
# access token as needed.
# This is the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.  
set jsonOAuthCC [new_CkJsonObject]

# --------------------------------------------------------------------------------------------------------
# You'll need to have registered an app in Azure beforehand.
# 
# Note: Creating a Team requires the following Application permissions:
# Team.Create, Teamwork.Migrate.All, Group.ReadWrite.All**, Directory.ReadWrite.All**
# 
# See How to Create an Azure App Registration for OAuth 2.0 Client Credentials
# --------------------------------------------------------------------------------------------------------

# Use the values from your App Registration in Azure.
CkJsonObject_UpdateString $jsonOAuthCC "client_id" "e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx"
CkJsonObject_UpdateString $jsonOAuthCC "client_secret" "K.d8Q~RoJxxxxvCj_u_xxxxxxxxxxxxxxxxxxxxx"

# You'll always use this scope for client credentials, because the allowed actions
# are determined by the App Permissions defined when you registered the app in Azure.
CkJsonObject_UpdateString $jsonOAuthCC "scope" "https://graph.microsoft.com/.default"

# The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
CkJsonObject_UpdateString $jsonOAuthCC "token_endpoint" "https://login.microsoftonline.com/112d7ed6-71bf-4eba-a866-738364321bfc/oauth2/v2.0/token"

# Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
CkHttp_put_AuthToken $http [CkJsonObject_emit $jsonOAuthCC]

# ------------------------------------------------------------------------------
# To create a Microsoft Team, we want to send an HTTP request like the following:
# 
# Note: The following is the minimal JSON for a request using Applicaton permissions (i.e. the access token retrieved using the client credentials grant).
# 
# POST https://graph.microsoft.com/v1.0/teams
# Content-Type: application/json
# 
# {
#    "template@odata.bind":"https://graph.microsoft.com/v1.0/teamsTemplates('standard')",
#    "displayName":"My Sample Team",
#    "description":"My Sample Teams Description",
#    "members":[
#       {
#          "@odata.type":"#microsoft.graph.aadUserConversationMember",
#          "roles":[
#             "owner"
#          ],
#          "user@odata.bind":"https://graph.microsoft.com/v1.0/users('0040b377-61d8-43db-94f5-81374122dc7e')"
#       }
#    ]
# }

set json [new_CkJsonObject]

CkJsonObject_UpdateString $json "\"template@odata.bind\"" "https://graph.microsoft.com/v1.0/teamsTemplates('standard')"
CkJsonObject_UpdateString $json "displayName" "My Sample Team"
CkJsonObject_UpdateString $json "description" "My Sample Teams Description"
CkJsonObject_UpdateString $json "members[0].\"@odata.type\"" "#microsoft.graph.aadUserConversationMember"
CkJsonObject_UpdateString $json "members[0].roles[0]" "owner"
CkJsonObject_UpdateString $json "members[0].\"user@odata.bind\"" "https://graph.microsoft.com/v1.0/users('4ee732c3-322e-4a6b-b729-2fd1eb5c6004')"

CkJsonObject_put_EmitCompact $json 0
puts [CkJsonObject_emit $json]

CkHttp_SetRequestHeader $http "Content-type" "application/json"

# resp is a CkHttpResponse
set resp [CkHttp_PostJson3 $http "https://graph.microsoft.com/v1.0/teams" "application/json" $json]
if {[CkHttp_get_LastMethodSuccess $http] == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkJsonObject $jsonOAuthCC
    delete_CkJsonObject $json
    exit
}

# A successful response is indicated by a 202 response status code and an empty response body.
puts "Response Status Code: [CkHttpResponse_get_StatusCode $resp]"
puts "Response Body:"
puts [CkHttpResponse_bodyStr $resp]

if {[CkHttpResponse_get_StatusCode $resp] >= 400} then {
    puts "Response Header:"
    puts [CkHttpResponse_header $resp]
    puts "Failed."
}

delete_CkHttpResponse $resp


delete_CkHttp $http
delete_CkJsonObject $jsonOAuthCC
delete_CkJsonObject $json