change how scanner and main process communicate (#2555)

* report scanner progress using api

* process scanner search index updates through api

* update changelog

* update dependencies

ErsatzTV/Controllers/Api/ScannerController.cs

@@ -0,0 +1,53 @@
+using System.Threading.Channels;
+using ErsatzTV.Application;
+using ErsatzTV.Application.Search;
+using ErsatzTV.Core.Interfaces.Metadata;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ErsatzTV.Controllers.Api;
+
+[ApiController]
+[ApiExplorerSettings(IgnoreApi = true)]
+[Route("api/scan/{scanId:guid}")]
+public class ScannerController(
+    IScannerProxyService scannerProxyService,
+    ChannelWriter<ISearchIndexBackgroundServiceRequest> channelWriter)
+{
+    [HttpPost("progress")]
+    [EndpointSummary("Scanner progress update")]
+    public async Task<IActionResult> Progress(Guid scanId, [FromBody] decimal percentComplete)
+    {
+        await scannerProxyService.Progress(scanId, percentComplete);
+        return new OkResult();
+    }
+
+    [HttpPost("items/reindex")]
+    [EndpointSummary("Scanner reindex items in search index")]
+    public async Task<IActionResult> UpdateItems(
+        Guid scanId,
+        [FromBody] List<int> itemsToUpdate,
+        CancellationToken cancellationToken)
+    {
+        if (scannerProxyService.IsActive(scanId))
+        {
+            await channelWriter.WriteAsync(new ReindexMediaItems(itemsToUpdate), cancellationToken);
+        }
+
+        return new OkResult();
+    }
+
+    [HttpPost("items/remove")]
+    [EndpointSummary("Scanner remove items from search index")]
+    public async Task<IActionResult> RemoveItems(
+        Guid scanId,
+        [FromBody] List<int> itemsToRemove,
+        CancellationToken cancellationToken)
+    {
+        if (scannerProxyService.IsActive(scanId))
+        {
+            await channelWriter.WriteAsync(new RemoveMediaItems(itemsToRemove), cancellationToken);
+        }
+
+        return new OkResult();
+    }
+}