Extract admin and results workflows into services

Endpoints/ResultsWorkflowService.cs

@@ -0,0 +1,85 @@
+using GameList.Data;
+using GameList.Domain;
+using Microsoft.EntityFrameworkCore;
+
+namespace GameList.Endpoints;
+
+internal sealed class ResultsWorkflowService(AppDbContext db)
+{
+    public async Task<IResult> GetResultsAsync(Player player)
+    {
+        var appState = await db.AppState.AsNoTracking().FirstAsync();
+        if (!appState.ResultsOpen)
+            return Results.BadRequest(new { error = "Results are locked until the admin enables them." });
+
+        var phase = await EndpointHelpers.GetCurrentPhaseAsync(db, player.Id);
+        if (phase != Phase.Results)
+            return EndpointHelpers.PhaseMismatch(Phase.Results, phase);
+
+        var results = await db
+            .Suggestions.AsNoTracking()
+            .Include(s => s.Player)
+            .Include(s => s.Votes)
+            .Select(s => new
+            {
+                s.Id,
+                s.Name,
+                Author = s.Player!.DisplayName,
+                s.MinPlayers,
+                s.MaxPlayers,
+                Total = s.Votes.Sum(v => v.Score),
+                s.Votes.Count,
+                Average = s.Votes.Count == 0 ? 0 : s.Votes.Average(v => v.Score),
+                Votes = s.Votes.Select(v => v.Score).ToList(),
+                MyVote = s.Votes
+                    .Where(v => v.PlayerId == player.Id)
+                    .Select(v => (int?)v.Score)
+                    .FirstOrDefault(),
+                s.ScreenshotUrl,
+                s.YoutubeUrl,
+                s.GameUrl,
+                s.Description,
+                s.Genre,
+                s.ParentSuggestionId
+            })
+            .OrderByDescending(r => r.Average)
+            .ToListAsync();
+
+        var rootIndex = EndpointHelpers.BuildLinkRoots(results.Select(r => (r.Id, r.ParentSuggestionId)));
+        var nameLookup = results.ToDictionary(r => r.Id, r => r.Name);
+
+        var shaped = results.Select(r =>
+        {
+            var linkedIds = EndpointHelpers.LinkedIdsFor(r.Id, rootIndex)
+                .Where(id => id != r.Id)
+                .ToList();
+
+            return new
+            {
+                r.Id,
+                r.Name,
+                r.Author,
+                r.MinPlayers,
+                r.MaxPlayers,
+                r.Total,
+                r.Count,
+                r.Average,
+                r.Votes,
+                r.MyVote,
+                r.ScreenshotUrl,
+                r.YoutubeUrl,
+                r.GameUrl,
+                r.Description,
+                r.Genre,
+                r.ParentSuggestionId,
+                LinkedIds = linkedIds,
+                LinkedTitles = linkedIds
+                    .Where(nameLookup.ContainsKey)
+                    .Select(id => nameLookup[id])
+                    .ToList()
+            };
+        });
+
+        return Results.Ok(shaped);
+    }
+}