This portable class library makes it very easy to harness the power of the Embyr API. This is available as a Nuget package:
This is an example of connecting to a single server using a fixed, predictable address, from an app that has user-specific features.
// Developers are encouraged to create their own ILogger implementation
var logger = new NullLogger();
// This describes the device capabilities
var capabilities = new ClientCapabilities();
// If using the portable class library you'll need to supply your own IDevice implementation.
var device = new Device
{
DeviceName = "My Device Name",
DeviceId = "My Device Id"
};
// If using the portable class library you'll need to supply your own ICryptographyProvider implementation.
var cryptoProvider = new CryptographyProvider();
var client = new ApiClient(logger, "http://localhost:8096", "My client name", device, cryptoProvider);
var authResult = await AuthenticateUserAsync("username", passwordHash);
// Report capabilities after authentication
await ApiClient.ReportCapabilities(capabilities);
// RemoteLoggedOut indicates the user was logged out remotely by the server
ApiClient.RemoteLoggedOut += ApiClient_RemoteLoggedOut;
// Get the ten most recently added items for the current user
var items = await client.GetItemsAsync(new ItemQuery
{
UserId = client.UserId,
SortBy = new[] { ItemSortBy.DateCreated },
SortOrder = SortOrder.Descending,
// Get media only, don't return folder items
Filters = new[] { ItemFilter.IsNotFolder },
Limit = 10,
// Search recursively through the user's library
Recursive = true
});
await client.Logout();If your app is some kind of service or utility (e.g. Sickbeard), you should construct ApiClient with your api key.
// Developers are encouraged to create their own ILogger implementation
var logger = new NullLogger();
// If using the portable class library you'll need to supply your own ICryptographyProvider implementation.
var cryptoProvider = new CryptographyProvider();
// This describes the device capabilities
var capabilities = new ClientCapabilities();
var client = new ApiClient(logger, "http://localhost:8096", "0123456789", capabilities, cryptoProvider);
// Report capabilities
await ApiClient.ReportCapabilities(capabilities);
// RemoteLoggedOut indicates the access token was revoked remotely by the server
ApiClient.RemoteLoggedOut += ApiClient_RemoteLoggedOut;
// Get the ten most recently added items for the current user
var items = await client.GetItemsAsync(new ItemQuery
{
SortBy = new[] { ItemSortBy.DateCreated },
SortOrder = SortOrder.Descending,
// Get media only, don't return folder items
Filters = new[] { ItemFilter.IsNotFolder },
Limit = 10,
// Search recursively through the user's library
Recursive = true
});Once you have an ApiClient instance, you can easily connect to the server's web socket using:
ApiClient.OpenWebSocket();This will open a connection in a background thread, and periodically check to ensure it's still connected. The web socket provides various events that can be used to receive notifications from the server:
ApiClient.UserUpdated += webSocket_UserUpdated;The above examples are designed for cases when your app always connects to a single server, and you always know the address. An example is an app that will always run within a local network and only connect to one server at a time. If your app is designed to support multiple networks and/or multiple servers, then IConnectionManager should be used in place of the above example.
// Developers are encouraged to create their own ILogger implementation
var logger = new NullLogger();
// This describes the device capabilities
var capabilities = new ClientCapabilities();
// If using the portable class library you'll need to supply your own IDevice implementation.
var device = new Device
{
DeviceName = "My Device Name",
DeviceId = "My Device Id"
};
// Developers will have to implement ICredentialProvider to provide storage for saving server information
var credentialProvider = new CredentialProvider();
// If using the portable class library you'll need to supply your own INetworkConnection implementation.
var networkConnection = new NetworkConnection(logger);
// If using the portable class library you'll need to supply your own ICryptographyProvider implementation.
var cryptoProvider = new CryptographyProvider();
// If using the portable class library you'll need to supply your own IServerLocator implementation.
var serverLocator = new ServerLocator(logger);
var connectionManager = new ConnectionManager(logger,
credentialProvider,
networkConnection,
serverLocator,
"My App Name",
// Application version
"1.0.0.0",
device,
capabilities,
cryptoProvider,
ClientWebSocketFactory.CreateWebSocket); After you've created your instance of IConnectionManager, simply call the Connect method. It will return a result object with three properties:
- State
- Servers
- ApiClient
ServerInfo and ApiClient will be null if State == Unavailable. If State==SignedIn or State==ServerSignIn, the Servers list will always have one single entry. Let's look at an example.
var result = await connectionManager.Connect(cancellationToken);
switch (result.State)
{
case ConnectionState.ConnectSignIn:
// Connect sign in screen should be presented
// Authenticate using LoginToConnect, then call Connect again to start over
case ConnectionState.ServerSignIn:
// A server was found and the user needs to login.
// Display a login screen and authenticate with the server using result.ApiClient
case ConnectionState.ServerSelection:
// Multiple servers available
// Display a selection screen using result.Servers
// When a server is chosen, call the Connect overload that accept either a ServerInfo object or a String url.
case ConnectionState.SignedIn:
// A server was found and the user has been signed in using previously saved credentials.
// Ready to browse using result.ApiClient
}If the user wishes to connect to a new server, simply use the Connect overload that accepts an address.
var address = "http://localhost:8096";
var result = await connectionManager.Connect(address, cancellationToken);
switch (result.State)
{
case ConnectionState.Unavailable:
// Server unreachable
case ConnectionState.ServerSignIn:
// A server was found and the user needs to login.
// Display a login screen and authenticate with the server using result.ApiClient
case ConnectionState.SignedIn:
// A server was found and the user has been signed in using previously saved credentials.
// Ready to browse using result.ApiClient
}Similarly, if the user selects a server from the selection screen, use the overload that accepts a ServerInfo instance. When the user wishes to logout, use connectionManager.Logout instead of the individual apiClient.Logout.
If at anytime the RemoteLoggedOut event is fired, simply start the workflow all over again by calling connectionManager.Connect(cancellationToken).
ConnectionManager will handle opening and closing web socket connections at the appropriate times. All your app needs to do is use an ApiClient instance to subscribe to individual events.
ApiClient.UserUpdated += webSocket_UserUpdated;With multi-server connectivity it is not recommended to keep a global ApiClient instance, or pass an ApiClient around the application. Instead keep a factory that will resolve the appropiate ApiClient instance depending on context. In order to help with this, ConnectionManager has a GetApiClient method that accepts a BaseItemDto and returns an ApiClient from the server it belongs to.