update AI initializing

rework AIAvailabilityStatus events to mediatr

Azaion.Common/Services/Inference/InferenceService.cs

@@ -0,0 +1,56 @@
+using Azaion.Common.DTO;
+using Azaion.Common.DTO.Config;
+using Azaion.Common.Extensions;
+using Microsoft.Extensions.Options;
+
+namespace Azaion.Common.Services.Inference;
+
+public interface IInferenceService
+{
+    Task RunInference(List<string> mediaPaths, CancellationToken ct = default);
+    CancellationTokenSource InferenceCancelTokenSource { get; set; }
+    void StopInference();
+}
+
+// SHOULD BE ONLY ONE INSTANCE OF InferenceService. Do not add ANY NotificationHandler to it!
+// _inferenceCancelTokenSource should be created only once.
+public class InferenceService : IInferenceService
+{
+    private readonly IInferenceClient _client;
+    private readonly IAzaionApi _azaionApi;
+    private readonly IOptions<AIRecognitionConfig> _aiConfigOptions;
+    public CancellationTokenSource InferenceCancelTokenSource { get; set; } = new();
+    public CancellationTokenSource CheckAIAvailabilityTokenSource { get; set; } = new();
+
+    public InferenceService(IInferenceClient client, IAzaionApi azaionApi, IOptions<AIRecognitionConfig> aiConfigOptions)
+    {
+        _client = client;
+        _azaionApi = azaionApi;
+        _aiConfigOptions = aiConfigOptions;
+    }
+
+    public async Task CheckAIAvailabilityStatus()
+    {
+        CheckAIAvailabilityTokenSource = new CancellationTokenSource();
+        while (!CheckAIAvailabilityTokenSource.IsCancellationRequested)
+        {
+            _client.Send(RemoteCommand.Create(CommandType.AIAvailabilityCheck));
+            await Task.Delay(10000, CheckAIAvailabilityTokenSource.Token);
+        }
+    }
+
+    public async Task RunInference(List<string> mediaPaths, CancellationToken ct = default)
+    {
+        InferenceCancelTokenSource = new CancellationTokenSource();
+        _client.Send(RemoteCommand.Create(CommandType.Login, _azaionApi.Credentials));
+
+        var aiConfig = _aiConfigOptions.Value;
+        aiConfig.Paths = mediaPaths;
+        _client.Send(RemoteCommand.Create(CommandType.Inference, aiConfig));
+
+        using var combinedTokenSource = CancellationTokenSource.CreateLinkedTokenSource(ct, InferenceCancelTokenSource.Token);
+        await combinedTokenSource.Token.AsTask();
+    }
+
+    public void StopInference() => _client.Stop();
+}