public async Task SetCredentials(MQTTCredential mqttCredential)
{
var folder = Windows.Storage.ApplicationData.Current.LocalFolder;
var storeCredential = await folder.CreateFileAsync(CREDENTIAL_FILE, Windows.Storage.CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteTextAsync(storeCredential, JsonConvert.SerializeObject(mqttCredential));
}
//public static async Task<MQTTCredential> GetMQTTCredentials(DeviceModel device)
public static async Task <MQTTCredential> GetMQTTCredentials()
{
// 1 Check credential local is available or not.
var storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
var checkFileExist = await storageFolder.TryGetItemAsync(CREDENTIAL_FILENAME);
if (checkFileExist != null)
{
var credentialLocalFile = await storageFolder.GetFileAsync(CREDENTIAL_FILENAME);
var contentFromFile = await Windows.Storage.FileIO.ReadTextAsync(credentialLocalFile);
if (!string.IsNullOrEmpty(contentFromFile))
{
mQTTCredential = JsonConvert.DeserializeObject <MQTTCredential>(contentFromFile);
return(mQTTCredential);
}
}
// 2 if not availale. get from server, save data to storage
var body = JsonConvert.SerializeObject(deviceDefault);
HttpContent content = new StringContent(body, Encoding.UTF8, "application/json");
var response = await client.PutAsync("api/devices/credentials", content);
if (response.IsSuccessStatusCode)
{
//var result = await response.Content.ReadAsAsync<MQTTCredential>();
//return result;
var resultString = await response.Content.ReadAsStringAsync();
mQTTCredential = JsonConvert.DeserializeObject <MQTTCredential>(resultString);
// Create credentialJson file; replace if exists
//Windows.Storage.StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
//var x = Windows.Storage.ApplicationData.Current.LocalFolder.Path;
//var t = await storageFolder.GetFileAsync("credentiallocal.json");
var storeCredential = await storageFolder.CreateFileAsync(CREDENTIAL_FILENAME, Windows.Storage.CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteTextAsync(storeCredential, JsonConvert.SerializeObject(mQTTCredential));
return(mQTTCredential);
}
return(null);
}