(Objective-C) Get the Photos for a User

Demonstrates how to get the photos that the user has uploaded.

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#import <CkoOAuth2.h>
#import <CkoRest.h>
#import <NSString.h>
#import <CkoJsonObject.h>
#import <CkoDateTime.h>
#import <CkoDtObj.h>

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

// This example assumes a previously obtained an access token
CkoOAuth2 *oauth2 = [[CkoOAuth2 alloc] init];
oauth2.AccessToken = @"FACEBOOK-ACCESS-TOKEN";

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

// Connect to Facebook.
BOOL success = [rest Connect: @"graph.facebook.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// Provide the authentication credentials (i.e. the access key)
[rest SetAuthOAuth2: oauth2];

// Indicate that we only want the photos the user has personally uploaded.
[rest AddQueryParam: @"type" value: @"uploaded"];

// We could limit the number of photos by setting a limit.
[rest AddQueryParam: @"limit" value: @"5"];

// Gets the 1st page of photos. (Not the actual image data, but the information about each photo.)
// See https://developers.facebook.com/docs/graph-api/reference/user/photos/ for more information.
NSString *responseJson = [rest FullRequestNoBody: @"GET" uriPath: @"/v2.7/me/photos"];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

CkoJsonObject *json = [[CkoJsonObject alloc] init];
json.EmitCompact = NO;
[json Load: responseJson];
NSLog(@"%@",[json Emit]);

// A sample JSON response is shown below.  
// This is the code to parse the JSON response.

CkoDateTime *dtime = [[CkoDateTime alloc] init];
BOOL bLocalTime = YES;

CkoDtObj *dt = 0;
int i = 0;
int numItems = [[json SizeOfArray: @"data"] intValue];
while (i < numItems) {
    json.I = [NSNumber numberWithInt: i];
    NSLog(@"%@%d",@"--- ",i);
    NSString *name = [json StringOf: @"data[i].name"];
    if (json.LastMethodSuccess == YES) {
        NSLog(@"%@%@",@"name: ",name);
    }

    NSLog(@"%@%@",@"id: ",[json StringOf: @"data[i].id"]);

    // We can load the created_time into a CkDateTime...
    [dtime SetFromTimestamp: [json StringOf: @"data[i].created_time"]];
    dt = [dtime GetDtObj: bLocalTime];
    NSLog(@"%d%@%d%@%d%@%d%@%d",[dt.Month intValue],@"/",[dt.Day intValue],@"/",[dt.Year intValue],@"  ",[dt.Hour intValue]
        ,@":",[dt.Minute intValue]);

    i = i + 1;
}

// We can get the paging information as follows:
NSLog(@"%@%@",@"URL for next page: ",[json StringOf: @"paging.next"]);
NSLog(@"%@%@",@"before cursor: ",[json StringOf: @"paging.cursors.before"]);
NSLog(@"%@%@",@"after cursor: ",[json StringOf: @"paging.cursors.after"]);

// This is a sample JSON response:
// { 
//   "data": [
//     {
//       "created_time": "2016-09-29T20:46:18+0000",
//       "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
//       "id": "10210199026347451"
//     },
//     { 
//       "created_time": "2016-09-19T02:00:42+0000",
//       "id": "10210091531240138"
//     },
//     { 
//       "created_time": "2016-09-19T02:00:42+0000",
//       "id": "10210091520620125"
//     },
//     { 
//       "created_time": "2016-09-19T01:59:46+0000",
//       "name": "I would've went for a swim had it not been for the sign",
//       "id": "10210091522299917"
//     },
//     { 
//       "created_time": "2016-09-12T00:37:35+0000",
//       "id": "10210023316834798"
//     }
//   ],
//   "paging": { 
//     "cursors": { 
//       "before": "MTAyMTAxOTkwMjYzNDc0NTEZD",
//       "after": "MTAyMTAwMjMzMTU4MzQ3OTgZD"
//     },
//     "next": "https:\/\/graph.facebook.com\/v2.7\/10224048320139890\/photos?type=uploaded&limit=5&after=MTAyMTAwMjMzMTU4MzQ3OTgZD"
//   }
// }
//