(Objective-C) Refinitiv World-Check One - Get Top Level Groups

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Sends a signed GET request to get the top level groups.

Note: This example requires Chilkat v9.5.0.89 or later.

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#import <CkoJsonObject.h>
#import <CkoHttp.h>
#import <NSString.h>
#import <CkoJsonArray.h>

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

CkoJsonObject *json = [[CkoJsonObject alloc] init];
BOOL success;

// Create the following JSON:
// 
// {
//   "keyId": "aaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee",
//   "hmacKey": "xxxxzI3vi58xxxCBxxx1+P/d8tGxx7KuLqN/KMPNxxxxekhj8/bx83+1YQSUxxxxYyv939ceY06GvhYRKmxxxx==",
//   "algorithm": "hmac-sha256",
//   "headers": [
//     "(request-target)",
//     "host",
//     "date"
//   ]
// }

// Substitute your actual API key and API secret in place of "api-key" and "api-secret"
[json UpdateString: @"keyId" value: @"api-key"];
[json UpdateString: @"hmacKey" value: @"api-secret"];
[json UpdateString: @"algorithm" value: @"hmac-sha256"];
// Indicate the names of the headers to be included in the signature.
// "(request-target)" is not actually a header name, but is a special name for HTTP signatures.
// Copy the following three lines of code exactly as-is.  
// Do not replace "host", "date", or "(request-target)" with values.
[json UpdateString: @"headers[0]" value: @"(request-target)"];
[json UpdateString: @"headers[1]" value: @"host"];
[json UpdateString: @"headers[2]" value: @"date"];

CkoHttp *http = [[CkoHttp alloc] init];

// Setting the AuthSignature property causes the following header to be computed and added:
// Authorization: Signature keyId="...", algorithm="hmac-sha256", headers="(request-target) host date", signature="..."
http.AuthSignature = [json Emit];

[http SetRequestHeader: @"Cache-Control" value: @"no-cache"];

// Chilkat will auto-add the Date header because it's needed by the HTTP Signature.

NSString *responseJson = [http QuickGetStr: @"https://api-worldcheck.refinitiv.com/v2/groups"];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@",responseJson);
NSLog(@"%@",@"----");
// A 200 status code indicates success.
NSLog(@"%@%d",@"Status code = ",[http.LastStatus intValue]);

// Successful JSON looks like this:
// [ 
//   {
//   "id": "...",
//   "name": "Company Name",
//   "parentId": null,
//   "hasChildren": false,
//   "status": "ACTIVE",
//   "children": []
//   }
// ]

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

CkoJsonArray *jarr = [[CkoJsonArray alloc] init];

success = [jarr Load: responseJson];

CkoJsonObject *jsonObj = 0;
NSString *id = 0;
NSString *name = 0;
NSString *parentId = 0;
BOOL hasChildren;
NSString *status = 0;
int j;
int count_j;

int i = 0;
int count_i = [jarr.Size intValue];
while (i < count_i) {
    jsonObj = [jarr ObjectAt: [NSNumber numberWithInt: i]];
    id = [jsonObj StringOf: @"id"];
    name = [jsonObj StringOf: @"name"];
    parentId = [jsonObj StringOf: @"parentId"];
    hasChildren = [jsonObj BoolOf: @"hasChildren"];
    status = [jsonObj StringOf: @"status"];
    j = 0;
    count_j = [[jsonObj SizeOfArray: @"children"] intValue];
    while (j < count_j) {
        jsonObj.J = [NSNumber numberWithInt: j];
        j = j + 1;
    }

    i = i + 1;
}