Objective-C

QuickBooks - Read an Employee (with Error Response)

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Demonstrates how to fetch the information for a specific Quickbooks employee, but tries to fetch using an invalid employee id. Shows the error response and how to parse it. Objective-C

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

BOOL success = NO;

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  Get our previously obtained OAuth2 access token, which should contain JSON like this:
//  {
//    "expires_in": 3600,
//    "x_refresh_token_expires_in": 8726400,
//    "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
//    "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
//    "token_type": "bearer"
//  }

CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
success = [jsonToken LoadFile: @"qa_data/tokens/qb-access-token.json"];

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

//  Connect using TLS.
//  A single REST object, once connected, can be used for many Quickbooks REST API calls.
//  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
//  then it will be automatically re-established as needed.
BOOL bAutoReconnect = YES;
success = [rest Connect: @"sandbox-quickbooks.api.intuit.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: bAutoReconnect];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

CkoStringBuilder *sbAuth = [[CkoStringBuilder alloc] init];
[sbAuth Append: @"Bearer "];
[sbAuth Append: [jsonToken StringOf: @"access_token"]];
rest.Authorization = [sbAuth GetAsString];

[rest AddHeader: @"Accept" value: @"application/json"];
rest.AllowHeaderFolding = NO;

//  The company ID is 123146096291789
//  The employee ID is 999  (There is no employee with this ID and we should get a 400 response code w/ a response body indicating the error.)
NSString *responseBody = [rest FullRequestNoBody: @"GET" uriPath: @"/v3/company/123146096291789/employee/999?minorversion=45"];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

//  Load the JSON response into a JSON object for parsing.
//  A sample JSON response is shown below.
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json Load: responseBody];
json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

//  A 400 response is what we'd expect if trying to query for a non-existent employee ID
if ([rest.ResponseStatusCode intValue] != 400) {
    NSLog(@"%@",@"Request Header: ");
    NSLog(@"%@",rest.LastRequestHeader);
    NSLog(@"%@",@"----");
    NSLog(@"%@%d",@"Response StatusCode = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"Response StatusLine: ",rest.ResponseStatusText);
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",rest.ResponseHeader);
    return;
}

//  If we got here, the response status code was 400..
//  Iterate over the errors..
int numErrors = [[json SizeOfArray: @"Fault.Error"] intValue];
int i = 0;
while (i < numErrors) {

    json.I = [NSNumber numberWithInt: i];
    NSLog(@"%@%@",@"Message: ",[json StringOf: @"Fault.Error[i].Message"]);
    NSLog(@"%@%@",@"Detail: ",[json StringOf: @"Fault.Error[i].Detail"]);
    NSLog(@"%@%@",@"code: ",[json StringOf: @"Fault.Error[i].code"]);
    NSLog(@"%@",@"----");
    i = i + 1;
}

//  ------------------------------------------------------
//  The JSON error response looks like this:

//  {
//    "Fault": {
//      "Error": [
//        {
//          "Message": "Object Not Found",
//          "Detail": "Object Not Found : Something you're trying to use has been made inactive. Check the fields with accounts, customers, items, vendors or employees.",
//          "code": "610",
//          "element": ""
//        }
//      ],
//      "type": "ValidationFault"
//    },
//    "time": "2020-03-07T10:21:19.089-08:00"
//  }