Added work remaining url for remote extraction client

Jellyfin.Plugin.JRay/Controllers/TasksController.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Jellyfin.Data.Enums;
+using Jellyfin.Plugin.JRay.Models;
+using Jellyfin.Plugin.JRay.Services.Interfaces;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Jellyfin.Plugin.JRay.Controllers;
+
+/// <summary>
+/// Lets a remote extraction worker discover which library items still need
+/// to be processed.
+/// </summary>
+[ApiController]
+[Route("Plugins/JRay/Tasks")]
+[Authorize(Roles = "Administrator")]
+public class TasksController : ControllerBase
+{
+    private const int DefaultLimit = 10;
+    private const int MaxLimit = 100;
+
+    private readonly ILibraryManager _libraryManager;
+    private readonly ITruthDataService _truthDataService;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TasksController"/> class.
+    /// </summary>
+    /// <param name="libraryManager">The Jellyfin library manager.</param>
+    /// <param name="truthDataService">The truth data service.</param>
+    public TasksController(ILibraryManager libraryManager, ITruthDataService truthDataService)
+    {
+        _libraryManager = libraryManager;
+        _truthDataService = truthDataService;
+    }
+
+    /// <summary>
+    /// Gets a random sample of movies/episodes that have no truth data yet.
+    /// </summary>
+    /// <param name="limit">The maximum number of items to return (default 10, max 100).</param>
+    /// <returns>Up to <paramref name="limit"/> items with no truth data, in random order.</returns>
+    [HttpGet("Pending")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    public ActionResult<IEnumerable<PendingExtractionItem>> GetPending([FromQuery] int limit = DefaultLimit)
+    {
+        var effectiveLimit = Math.Clamp(limit, 1, MaxLimit);
+
+        var items = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            IncludeItemTypes = new[] { BaseItemKind.Movie, BaseItemKind.Episode },
+            IsVirtualItem = false,
+            Recursive = true,
+        });
+
+        var pending = items
+            .Where(item => !string.IsNullOrEmpty(item.Path) && !_truthDataService.HasTruth(item.Id, item.Path))
+            .OrderBy(_ => Random.Shared.Next())
+            .Take(effectiveLimit)
+            .Select(item => new PendingExtractionItem
+            {
+                ItemId = item.Id,
+                Path = item.Path,
+                Name = item.Name
+            });
+
+        return Ok(pending);
+    }
+}