feat(p12-w2): track-cardinal high-res waveform fetch + bridge rewire

Add GET api/track/{trackEntryKey}/waveform/high-res (+ proxy), ITrackDataService.GetTrackWaveform; rewire visualizer to resolve the current track's EntryKey and re-fetch on track change. Retire the client mix-waveform read path.
2026-06-17 11:12:26 -04:00
parent ec3989c354
commit a19a734757
13 changed files with 216 additions and 74 deletions
@@ -319,4 +319,40 @@ public class TrackProxyController : ControllerBase
            return Content(json, "application/json");
        }
    }
+
+    /// <summary>
+    /// Proxies a track's high-res waveform datum (JSON) from DeepDrftAPI — the per-track datum the lava
+    /// visualizer fetches for the current track (phase-12 §5b). Unauthenticated, same posture as the
+    /// 512-bucket profile forward above; the "high-res" suffix selects the TrackWaveforms datum. Small
+    /// JSON, buffered and relayed; a 404 (no high-res datum stored — track not yet backfilled) passes
+    /// through so the visualizer blanks gracefully.
+    /// </summary>
+    [HttpGet("{trackId}/waveform/high-res")]
+    public async Task<ActionResult> GetHighResWaveform(string trackId, CancellationToken ct = default)
+    {
+        var path = $"api/track/{Uri.EscapeDataString(trackId)}/waveform/high-res";
+
+        HttpResponseMessage upstream;
+        try
+        {
+            upstream = await _upstream.GetAsync(path, HttpCompletionOption.ResponseHeadersRead, ct);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Upstream call to DeepDrftAPI track/{TrackId}/waveform/high-res failed", trackId);
+            return StatusCode(502, "Upstream unavailable");
+        }
+
+        using (upstream)
+        {
+            if (!upstream.IsSuccessStatusCode)
+            {
+                _logger.LogWarning("DeepDrftAPI track/{TrackId}/waveform/high-res returned {Status}", trackId, (int)upstream.StatusCode);
+                return StatusCode((int)upstream.StatusCode);
+            }
+
+            var json = await upstream.Content.ReadAsStringAsync(ct);
+            return Content(json, "application/json");
+        }
+    }
 }