(Objective-C) curl with OAuth2 Client Credentials

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Note: This example requires Chilkat v11.5.0 or greater.

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#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>
#import <CkoHttpCurl.h>

BOOL success = NO;

// This example will run the following curl command

// curl -X GET "https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}" \
//   -H "Authorization: Bearer ACCESS_TOKEN" \
//   -H "Accept: application/json"

CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];
[sb AppendLn: @"curl -X GET \"https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}\" \\"];
[sb AppendLn: @"  -H \"Authorization: Bearer ACCESS_TOKEN\" \\"];
[sb AppendLn: @"  -H \"Accept: application/json\""];

// Build the JSON that provides information for getting the OAuth2 access token using the OAuth2 client credentials flow.
CkoJsonObject *jsonOAuth2 = [[CkoJsonObject alloc] init];

[jsonOAuth2 UpdateString: @"oauth2.client_id" value: @"CLIENT_ID"];
[jsonOAuth2 UpdateString: @"oauth2.client_secret" value: @"CLIENT_SECRET"];
[jsonOAuth2 UpdateString: @"oauth2.scope" value: @"https://graph.microsoft.com/.default"];
[jsonOAuth2 UpdateString: @"oauth2.token_endpoint" value: @"https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token"];

CkoHttpCurl *httpCurl = [[CkoHttpCurl alloc] init];

// Provide the information for getting the OAuth2 access token from the token endpoint
// Note: The Authorization header specified in the curl command will be ignored and replaced using the OAuth2 access token obtained at runtime from the token endpoint.
[httpCurl SetAuth: jsonOAuth2];

// The placeholders {{sharepoint_hostname}} and {{site_name}} represent variables that must be defined before execution.
// When DoYourThing runs the curl command, it automatically substitutes these placeholders with their corresponding values.
// Below are the values assigned to these variables:
[httpCurl SetVar: @"sharepoint_hostname" varValue: @"example.sharepoint.com"];
[httpCurl SetVar: @"site_name" varValue: @"test"];

// Run the curl command.
success = [httpCurl DoYourThing: [sb GetAsString]];
if (success == NO) {
    NSLog(@"%@",httpCurl.LastErrorText);
    return;
}

CkoJsonObject *responseJson = [[CkoJsonObject alloc] init];
responseJson.EmitCompact = NO;

[httpCurl GetResponseJson: responseJson];

int statusCode = [httpCurl.StatusCode intValue];
NSLog(@"%@%d",@"response status code: ",statusCode);

NSLog(@"%@",[responseJson Emit]);