(Swift 3,4,5...) Google Sheets - Update (Set Values in a Range)

Sets values in a range of a spreadsheet. This example will demonstrate by first getting a range, then changing some values in the JSON, and then HTTPS PUT the changes back to the Google Sheet.

Note: This example requires Chilkat v9.5.0.76 or greater.

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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.string(of: "access_token")

    // First get the cells in the range A1:B5
    http.setUrlVar("range", value: "Sheet1!A1:B5")
    http.setUrlVar("spreadsheetId", value: "1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA")
    var jsonResponse: String? = http.quickGetStr("https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}")
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    print("\(jsonResponse!)")

    let json = CkoJsonObject()!
    json.emitCompact = false
    json.load(jsonResponse)

    // A sample response is shown below.

    // {
    //   "range": "Sheet1!A1:B5",
    //   "majorDimension": "ROWS",
    //   "values": [
    //     [
    //       "Item",
    //       "Cost"
    //     ],
    //     [
    //       "Wheel",
    //       "$20.50"
    //     ],
    //     [
    //       "Door",
    //       "$15"
    //     ],
    //     [
    //       "Engine",
    //       "$100"
    //     ],
    //     [
    //       "Totals",
    //       "$135.50"
    //     ]
    //   ]
    // }

    // We're going to change the cost of the Engine to $120, and the Totals to $155.50

    json.i = 3
    json.j = 1
    json.update("values[i][j]", value: "$120")
    json.i = 4
    json.update("values[i][j]", value: "$155.50")

    // Show the updated JSON.
    print("\(json.emit()!)")

    // --------------------------------------------------------
    // Note: This example requires Chilkat v9.5.0.76 or greater.
    // --------------------------------------------------------

    // Update the Google Sheet using a PUT request.
    json.emitCompact = true
    var urlToUpdate: String? = "https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}?valueInputOption=USER_ENTERED"
    var xyz: String? = http.quickGetStr(urlToUpdate)
    var resp: CkoHttpResponse? = http.pText("PUT", url: urlToUpdate, textData: json.emit(), charset: "utf-8", contentType: "application/json", md5: false, gzip: false)
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    // Examine the response..
    print("response status code = \(resp!.statusCode.intValue)")
    print("response body:")
    print("\(resp!.bodyStr!)")

    // A sample response body:

    // {
    //   "spreadsheetId": "1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA",
    //   "updatedRange": "Sheet1!A1:B5",
    //   "updatedRows": 5,
    //   "updatedColumns": 2,
    //   "updatedCells": 10
    // }

    resp = nil

}