Swift

Calendar: Refresh Expired OAuth2 Access Token

See more Microsoft Calendar Examples

Refreshes an expired OAuth2 access token. Swift

func chilkatTest() {
    var success: Bool = false

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

    let json = CkoJsonObject()!
    success = json.loadFile(path: "qa_data/tokens/msGraphCalendar.json")
    if success != true {
        return
    }

    let req = CkoHttpRequest()!
    req.addParam(name: "grant_type", value: "refresh_token")
    req.addParam(name: "redirect_uri", value: "http://localhost:3017/")
    req.addParam(name: "client_id", value: "MICROSOFT-GRAPH-CLIENT-ID")
    req.addParam(name: "client_secret", value: "MICROSOFT-GRAPH-CLIENT-SECRET")
    req.addParam(name: "refresh_token", value: json.string(of: "refresh_token"))
    req.addParam(name: "scope", value: "openid profile offline_access user.readwrite calendars.readwrite files.readwrite")

    let http = CkoHttp()!

    req.httpVerb = "POST"
    req.contentType = "application/x-www-form-urlencoded"

    let resp = CkoHttpResponse()!
    success = http.httpReq(url: "https://login.microsoftonline.com/common/oauth2/v2.0/token", request: req, response: resp)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    // Load the JSON response.
    json.load(json: resp.bodyStr)
    json.emitCompact = false

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

    print("Response status code: \(resp.statusCode.intValue)")

    // If the response status code is not 200, then it's an error.
    if resp.statusCode.intValue != 200 {
        return
    }

    // Save the refreshed access token JSON to a file for future requests.
    let fac = CkoFileAccess()!
    fac.writeEntireTextFile(path: "qa_data/tokens/msGraphCalendar.json", fileData: json.emit(), charset: "utf-8", includePreamble: false)

    print("Success.")

}