Objective-C Google Drive: List a File's Permissions

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List the permissions for a file by file id. (In this example the file id = 1R_70heIyzIAu1_u0prXbYcaIiJRVkgBl)

Documentation: https://developers.google.com/drive/v3/reference/permissions/list

#import <CkoRest.h>
#import <CkoOAuth2.h>
#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>
#import <NSString.h>

CkoRest *rest = [[CkoRest alloc] init];
BOOL success;

//   Provide a previously obtained OAuth2 access token.
CkoOAuth2 *oauth2 = [[CkoOAuth2 alloc] init];
oauth2.AccessToken = @"OAUTH2_ACCESS_TOKEN";
[rest SetAuthOAuth2: oauth2];

success = [rest Connect: @"www.googleapis.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

[rest AddQueryParam: @"includeTeamDriveItems" value: @"true"];
[rest AddQueryParam: @"supportsTeamDrives" value: @"true"];

CkoStringBuilder *sbJson = [[CkoStringBuilder alloc] init];
success = [rest FullRequestNoBodySb: @"GET" uriPath: @"/drive/v3/files/1R_70heIyzIAu1_u0prXbYcaIiJRVkgBl/permissions" sb: sbJson];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

if ([rest.ResponseStatusCode intValue] != 200) {
    NSLog(@"%@%d",@"Received error response code: ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@",@"Response body:");
    NSLog(@"%@",[sbJson GetAsString]);
    return;
}

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json LoadSb: sbJson];

//  The following code parses the JSON response.
//  A sample JSON response is shown below the sample code.
NSString *kind = 0;
int i;
int count_i;
NSString *id = 0;
NSString *type = 0;
NSString *role = 0;
BOOL allowFileDiscovery;

kind = [json StringOf: @"kind"];
i = 0;
count_i = [[json SizeOfArray: @"permissions"] intValue];
while (i < count_i) {
    json.I = [NSNumber numberWithInt: i];
    kind = [json StringOf: @"permissions[i].kind"];
    id = [json StringOf: @"permissions[i].id"];
    type = [json StringOf: @"permissions[i].type"];
    role = [json StringOf: @"permissions[i].role"];
    allowFileDiscovery = [json BoolOf: @"permissions[i].allowFileDiscovery"];
    i = i + 1;
}

NSLog(@"%@",@"Example Completed.");

Sample JSON Response Body

{
  "kind": "drive#permissionList",
  "permissions": [
    {
      "kind": "drive#permission",
      "id": "07604395918166943595k",
      "type": "domain",
      "role": "reader",
      "allowFileDiscovery": false
    },
    {
      "kind": "drive#permission",
      "id": "05909037819814716957",
      "type": "user",
      "role": "organizer"
    },
    {
      "kind": "drive#permission",
      "id": "13254573739200948291",
      "type": "user",
      "role": "organizer"
    }
  ]
}