(Swift 2) Google Sheets - Append Values to an Existing Spreadsheet

Appends values to an existing Google spreadsheet.

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func chilkatTest() {
    //  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..
    let jsonToken = CkoJsonObject()
    var success: Bool = jsonToken.LoadFile("qa_data/tokens/googleSheets.json")
    if jsonToken.HasMember("access_token") == false {
        print("No access token found.")
        return
    }

    let http = CkoHttp()
    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"
    //      ]
    //    ]
    //  }

    let json = CkoJsonObject()
    json.UpdateString("range", value: "Sheet1!A1:B5")
    json.UpdateString("majorDimension", value: "ROWS")

    json.I = 0
    json.J = 1
    json.UpdateString("values[i][j]", value: "Paint")
    json.J = 1
    json.UpdateString("values[i][j]", value: "$100")

    json.I = 1
    json.J = 0
    json.UpdateString("values[i][j]", value: "Brakes")
    json.J = 1
    json.UpdateString("values[i][j]", value: "$100")

    json.I = 2
    json.J = 0
    json.UpdateString("values[i][j]", value: "Totals")
    json.J = 1
    json.UpdateString("values[i][j]", value: "$335.50")

    json.EmitCompact = false
    print("\(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")
    var resp: CkoHttpResponse? = http.PostJson("https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}:append?valueInputOption=USER_ENTERED", jsonText: json.Emit())
    if http.LastMethodSuccess != true {
        print("\(http.LastErrorText)")
        return
    }

    print("response status code = \(resp!.StatusCode.intValue)")
    print("response JSON = \(resp!.BodyStr)")

    resp = nil

    //  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:
    //  

}