Objective-C Google Drive: Create a New Comment on a File

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Creates a new comment on a file. The file is specified by file ID. This example creates a comment on the file having id = "0B5drHSd5ZHwgc3RhcnRlcl9maWxlX2Rhc2hlclYw".

Documentation: https://developers.google.com/drive/v3/reference/comments/create

#import <CkoRest.h>
#import <CkoOAuth2.h>
#import <CkoJsonObject.h>
#import <CkoStringBuilder.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: @"fields" value: @"author,content"];

//  The following code creates the JSON request body.
//  The JSON created by this code is shown below.
CkoJsonObject *jsonReq = [[CkoJsonObject alloc] init];
[jsonReq UpdateString: @"content" value: @"This is a test comment about this file..."];

CkoStringBuilder *sbReq = [[CkoStringBuilder alloc] init];
[jsonReq EmitSb: sbReq];

[rest AddHeader: @"Content-Type" value: @"application/json"];

CkoStringBuilder *sbJson = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"POST" uriPath: @"/drive/v3/files/0B5drHSd5ZHwgc3RhcnRlcl9maWxlX2Rhc2hlclYw/comments" requestBody: sbReq responseBody: 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 *authorKind = 0;
NSString *authorDisplayName = 0;
NSString *authorPhotoLink = 0;
BOOL authorMe;
NSString *content = 0;

authorKind = [json StringOf: @"author.kind"];
authorDisplayName = [json StringOf: @"author.displayName"];
authorPhotoLink = [json StringOf: @"author.photoLink"];
authorMe = [json BoolOf: @"author.me"];
content = [json StringOf: @"content"];

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

Sample JSON Request Body

{
  "content": "This is a test comment about this file..."
}

Sample JSON Response Body

{
  "author": {
    "kind": "drive#user",
    "displayName": "Matt Fausey",
    "photoLink": "//ssl.gstatic.com/s2/profiles/images/silhouette96.png",
    "me": true
  },
  "content": "This is a test comment about this file..."
}