(Visual FoxPro) 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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL lnSuccess
LOCAL loHttp
LOCAL loJsonOAuthCC
LOCAL loJson
LOCAL loResp

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Http')
loHttp = CreateObject('Chilkat.Http')

* 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.  
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJsonOAuthCC = CreateObject('Chilkat.JsonObject')

* --------------------------------------------------------------------------------------------------------
* 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.
loJsonOAuthCC.UpdateString("client_id","e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx")
loJsonOAuthCC.UpdateString("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.
loJsonOAuthCC.UpdateString("scope","https://graph.microsoft.com/.default")

* The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
loJsonOAuthCC.UpdateString("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,
loHttp.AuthToken = loJsonOAuthCC.Emit()

* ------------------------------------------------------------------------------
* 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 Team�s Description",
*    "members":[
*       {
*          "@odata.type":"#microsoft.graph.aadUserConversationMember",
*          "roles":[
*             "owner"
*          ],
*          "user@odata.bind":"https://graph.microsoft.com/v1.0/users('0040b377-61d8-43db-94f5-81374122dc7e')"
*       }
*    ]
* }

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.UpdateString('"template@odata.bind"',"https://graph.microsoft.com/v1.0/teamsTemplates('standard')")
loJson.UpdateString("displayName","My Sample Team")
loJson.UpdateString("description","My Sample Team�s Description")
loJson.UpdateString('members[0]."@odata.type"',"#microsoft.graph.aadUserConversationMember")
loJson.UpdateString("members[0].roles[0]","owner")
loJson.UpdateString('members[0]."user@odata.bind"',"https://graph.microsoft.com/v1.0/users('4ee732c3-322e-4a6b-b729-2fd1eb5c6004')")

loJson.EmitCompact = 0
? loJson.Emit()

loHttp.SetRequestHeader("Content-type","application/json")

loResp = loHttp.PostJson3("https://graph.microsoft.com/v1.0/teams","application/json",loJson)
IF (loHttp.LastMethodSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loJsonOAuthCC
    RELEASE loJson
    CANCEL
ENDIF

* A successful response is indicated by a 202 response status code and an empty response body.
? "Response Status Code: " + STR(loResp.StatusCode)
? "Response Body:"
? loResp.BodyStr

IF (loResp.StatusCode >= 400) THEN
    ? "Response Header:"
    ? loResp.Header
    ? "Failed."
ENDIF

RELEASE loResp

RELEASE loHttp
RELEASE loJsonOAuthCC
RELEASE loJson