TinyInsights.Maui

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TinyInsights.Maui

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TinyInsights is a library for tracking and a website for showing insights for your .NET MAUI app. Data will be saved in Application Insights. The website will help you to show the data in a more mobile app-friendly user interface.

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# TinyInsights

TinyInsights is a library for tracking and a website for showing insights for your .NET MAUI app. Data will be saved in Application Insights. The website will help you to show the data in a more mobile app-friendly user interface.

You can try out the website here, https://mauiinsights.z6.web.core.windows.net/. No data is saved in the application. This web assembly page can be used until March 2026, when access with API-key will stop working. After that you have to set up a application in Entra. For about how to setup the website for your application, read this, **[How to set up and configure the web site](docs/SetupServerSite.md)**.

## Add TinyInsights to your app
Install the latest version of the package ***TinyInsights.Maui.AppInsights*** to your app project.

```
dotnet add package TinyInsights.Maui.AppInsights
```

### Installation
In ***MauiProgram.cs***, you should call ***UseTinyInsights*** like below.
```csharp
var builder = MauiApp.CreateBuilder();
builder
  .UseMauiApp<App>()
  .ConfigureFonts(fonts =>
    {
      fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
      fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
     })
  .UseTinyInsights("{YOUR_CONNECTION_STRING}")
```

If you want, you can configure what type of events you want to track.
```csharp
builder.UseTinyInsights("{YOUR_CONNECTION_STRING}",
        (provider) =>
        {
            provider.IsTrackDependencyEnabled = true;
            provider.IsTrackEventsEnabled = true;
            provider.IsTrackErrorsEnabled = true;
            provider.IsTrackPageViewsEnabled = true;
            provider.IsTrackCrashesEnabled = true;           
        });
```

### Track events
Crashes will be tracked automatically if it is enabled, other events you need to track manually.

To get access to the insights provider that you should use to track events, you should inject the ***IInsights*** interface.
```csharp
private readonly IInsights insights;

public MainViewModel(IInsights insights)
{
  this.insights = insights;
}
```

#### Track sessions
When the app starts, a new session will be created. To create a new session, you should call the method below in the ***OnResume*** method in the ***App.xaml.cs*** file. This will create a new session every time the user is returning to the app.

```csharp
protected override void OnResume()
{
    base.OnResume();

var insights = serviceProvider.GetRequiredService<IInsights>();
    insights.CreateNewSession();
}
```

#### Track page views
```csharp
await insights.TrackPageViewAsync("MainView");
```

#### Track custom events
```csharp
await insights.TrackEventAsync("AddButtonTapped");
```

#### Track exceptions
```csharp
catch (Exception ex)
{
    await insights.TrackErrorAsync(ex);
}
```

#### Track additional data
For all the track methods, you can pass additional data by passing a Dictionary.
```csharp
var data = new Dictionary<string, string>()
          {           
              {"key", "value"},
              {"key2", "value2"}
          };

await insights.TrackPageViewAsync("MainView", data);
```

#### Track dependencies
To automatically track HTTP calls you can use the ***InsightsMessageHandler*** together with the HttpClient.
```csharp
private readonly InsightsMessageHandler insightsMessageHandler;
private readonly HttpClient client;

public MainViewModel(InsightsMessageHandler insightsMessageHandler)
{
  this.insightsMessageHandler = insightsMessageHandler;
  client = new HttpClient(insightsMessageHandler);
}
```
If you don't want to track all dependencies, you can specify a filter when setting up TinyInsights.

```csharp
.UseTinyInsights("{CONNECTION-STRING}", (provider) =>
{
    provider.TrackDependencyFilter = (dependency) =>
    {
        return !dependency.Success && dependency.ResultCode != 401;
    };
});

```

You can also create a DependencyTracker and use it to track dependencies.
```csharp
using var dependency = insights.CreateDependencyTracker("BLOB",blobContainer.Uri.Host, url);
await blob.DownloadToAsync(stream);
```
or if you don't want to wait for the scope of the using.
```csharp
var dependency = insights.CreateDependencyTracker("BLOB",blobContainer.Uri.Host, url);
await blob.DownloadToAsync(stream);
dependency.Dispose();
```

#### Crash callbacks
The `ApplicationInsightsProvider` exposes two callbacks that let you hook into the crash handling pipeline:

- **`AfterCrash`** – An `Action<Dictionary<string,string>>` that is invoked immediately after a crash has been captured and stored. The dictionary argument contains the snapshot of global properties that was captured for that crash. Use this to run synchronous cleanup or logging right when the crash occurs.
- **`BeforeSendCrash`** – A `Func<Dictionary<string,string>,Task>` that is awaited before stored crashes are sent to Application Insights on the next app launch. The dictionary argument contains the telemetry properties that will be sent with the crash report. Use this for any async preparation you need before crash data is transmitted.

```csharp
.UseTinyInsights("{CONNECTION-STRING}", (provider) =>
{
    if (provider is ApplicationInsightsProvider appProvider)
    {
        appProvider.AfterCrash = (globalProperties) =>
        {
            // Runs right after a crash is captured.
            // globalProperties contains the captured snapshot of global properties for the crash.
        };
        appProvider.BeforeSendCrash = async (telemetryProperties) =>
        {
            // Runs before stored crashes are sent to Application Insights.
            // telemetryProperties contains the properties that will be sent with the crash telemetry.
            await Task.CompletedTask;
        };
    }
});
```

#### Offline behavior
TinyInsights checks the network status before it sends telemetry. When the device doesn't have an internet connection, no telemetry is sent and stored crashes are kept in the local storage, so they can be sent the next time the app is started with an internet connection. This is to avoid long-running network calls and errors when the device is offline.

Note that the network status is read with `Connectivity.Current.NetworkAccess`, which on Android requires the `ACCESS_NETWORK_STATE` permission. If the network status can't be read, TinyInsights will assume that the device is online.

#### UserId
By default a random UserId is generated for each user. If you want to set a specific UserId you can do it like below.
```csharp
ìnsights.OverrideAnonymousUserId("MyOwnUserId");
```

To generate a new random UserId you can call the method below.
```csharp
ìnsights.GenerateNewAnonymousUserId();
```

### Set and update global properties
It is possible to set/update global properties with the UpsertGlobalProperties method.
```csharp
insights.UpsertGlobalProperty("language", "sv-SE");
````

For predefined properties on the Client object, like RoleName you can use, Cloud.RoleName as key.
```csharp
insights.UpsertGlobalProperty("Cloud.RoleName", "MyRoleName");
````
Right now Cloud.RoleName, Cloud.RoleInstance, Device.Id, Device.Type, Device.Model and Device.OperatingSystem are supported to change that way.

## Use with ILogger
If you want, you can also use TinyInsights with the ILogger interface.

In ***MauiProgram.cs***, you should call ***UseTinyInsights*** like below.
```csharp
var builder = MauiApp.CreateBuilder();
builder
  .UseMauiApp<App>()
  .ConfigureFonts(fonts =>
    {
      fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
      fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
     })
  .UseTinyInsightsAsILogger("{YOUR_CONNECTION_STRING}")
```

If you want, you can configure what type of events you want to track.
```csharp
builder.UseTinyInsightsAsILogger("{YOUR_CONNECTION_STRING}",
        (provider) =>
        {
            provider.IsTrackDependencyEnabled = true;
            provider.IsTrackEventsEnabled = true;
            provider.IsTrackErrorsEnabled = true;
            provider.IsTrackPageViewsEnabled = true;
            provider.IsTrackCrashesEnabled = true;
            provider.IsAutoTrackPageViewsEnabled = true;           
        });
```

### Use ILogger
To use **ILogger**, just inject the interface in the class you want to use it in.

```csharp
private readonly ILogger logger;

public class MainViewModel(ILogger logger)
{
    this.logger = logger;
}
```

#### Track page views
By default, page views are automatically tracked. But you can turn that off, and do it manually if you prefer.
```csharp
logger.LogTrace("MainView");
```

#### Track event
```csharp
logger.LogInformation("EventButton");
```

#### Track error
```csharp
 logger.LogError(ex, ex.Message);
 ```

#### Track debug info

**LogDebug** will only work with the debugger attached because it is using **Debug.WriteLine**.

```csharp
logger.LogDebug("Debug message");
```

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