(Objective-C) Google Sheets - Append Values to an Existing Spreadsheet

Appends values to an existing Google spreadsheet.

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#import <CkoJsonObject.h>
#import <CkoHttp.h>
#import <CkoHttpResponse.h>

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

// This example uses a previously obtained access token having permission for the 
// Google Sheets scope.

// In this example, Get Google Sheets OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/googleSheets.json"];
if ([jsonToken HasMember: @"access_token"] == NO) {
    NSLog(@"%@",@"No access token found.");
    return;
}

CkoHttp *http = [[CkoHttp alloc] init];
http.AuthToken = [jsonToken StringOf: @"access_token"];

// To append values to an existing spreadsheet, our HTTP request body will
// contain JSON in the format of a "ValueRange".  For example, the spreadsheet we'll be
// adding to in this example looks like this:

// 

// The JSON ValueRange for the cells in the above spreadsheet is:
// {
//   "range": "Sheet1!A1:B5",
//   "majorDimension": "ROWS",
//   "values": [
//     [
//       "Item",
//       "Cost"
//     ],
//     [
//       "Wheel",
//       "$20.50"
//     ],
//     [
//       "Door",
//       "$15"
//     ],
//     [
//       "Engine",
//       "$100"
//     ],
//     [
//       "Totals",
//       "$135.50"
//     ]
//   ]
// }

// This example will append 6 cells (3 rows / 2 columns).
// We'll be appending the following:
// 
// "Paint", "$100"
// "Brakes", "$100"
// "New Total", "$335.50"
// 

// The range of cells we'll be appending is A1:B5
// Therefore, the ValueRange JSON we'll be sending in our POST body is:

// {
//   "range": "Sheet1!A1:B5",
//   "majorDimension": "ROWS",
//   "values": [
//     [
//       "Paint",
//       "$100"
//     ],
//     [
//       "Brakes",
//       "$100"
//     ],
//     [
//       "New Total",
//       "$335.50"
//     ]
//   ]
// }

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"range" value: @"Sheet1!A1:B5"];
[json UpdateString: @"majorDimension" value: @"ROWS"];

json.I = [NSNumber numberWithInt:0];
json.J = [NSNumber numberWithInt:1];
[json UpdateString: @"values[i][j]" value: @"Paint"];
json.J = [NSNumber numberWithInt:1];
[json UpdateString: @"values[i][j]" value: @"$100"];

json.I = [NSNumber numberWithInt:1];
json.J = [NSNumber numberWithInt:0];
[json UpdateString: @"values[i][j]" value: @"Brakes"];
json.J = [NSNumber numberWithInt:1];
[json UpdateString: @"values[i][j]" value: @"$100"];

json.I = [NSNumber numberWithInt:2];
json.J = [NSNumber numberWithInt:0];
[json UpdateString: @"values[i][j]" value: @"Totals"];
json.J = [NSNumber numberWithInt:1];
[json UpdateString: @"values[i][j]" value: @"$335.50"];

json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

// Send the POST to:
// https://sheets.googleapis.com/v4/spreadsheets/{spreadsheetId}/values/{range}:append?valueInputOption=USER_ENTERED

[http SetUrlVar: @"spreadsheetId" value: @"1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA"];
[http SetUrlVar: @"range" value: @"Sheet1!A1:B5"];
CkoHttpResponse *resp = [http PostJson: @"https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}:append?valueInputOption=USER_ENTERED" jsonText: [json Emit]];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@%d",@"response status code = ",[resp.StatusCode intValue]);
NSLog(@"%@%@",@"response JSON = ",resp.BodyStr);

// Sample output:
// 
// response status code = 200
// response JSON = {
//   "spreadsheetId": "1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA",
//   "tableRange": "Sheet1!A1:B5",
//   "updates": {
//     "spreadsheetId": "1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA",
//     "updatedRange": "Sheet1!A6:B8",
//     "updatedRows": 3,
//     "updatedColumns": 2,
//     "updatedCells": 6
//   }
// }
// 

// Our Google Spreadsheet now looks like this:
//