Final MVP valid

app/api/analytics/coverage/route.ts

@@ -0,0 +1,64 @@
+import { NextResponse } from "next/server";
+import { prisma } from "@/lib/prisma";
+import { requireSession } from "@/lib/auth/requireSession";
+import { coerceDowntimeRange, rangeToStart } from "@/lib/analytics/downtimeRange";
+
+const bad = (status: number, error: string) =>
+  NextResponse.json({ ok: false, error }, { status });
+
+export async function GET(req: Request) {
+  const session = await requireSession();
+  if (!session) return bad(401, "Unauthorized");
+  const orgId = session.orgId;
+
+  const url = new URL(req.url);
+
+  // ✅ Parse params INSIDE handler
+  const range = coerceDowntimeRange(url.searchParams.get("range"));
+  const start = rangeToStart(range);
+
+  const machineId = url.searchParams.get("machineId"); // optional
+  const kind = (url.searchParams.get("kind") || "downtime").toLowerCase();
+
+  // coverage is only meaningful for downtime
+  if (kind !== "downtime") return bad(400, "Invalid kind (downtime only)");
+
+  let resolvedMachineId: string | null = null;
+
+  // If machineId provided, validate ownership
+  if (machineId) {
+    const m = await prisma.machine.findFirst({
+      where: { id: machineId, orgId },
+      select: { id: true },
+    });
+    if (!m) return bad(404, "Machine not found");
+    resolvedMachineId = m.id;
+  }
+
+  const rows = await prisma.reasonEntry.findMany({
+    where: {
+      orgId,
+      ...(resolvedMachineId ? { machineId: resolvedMachineId } : {}),
+      kind: "downtime",
+      capturedAt: { gte: start },
+    },
+    select: { durationSeconds: true, episodeId: true },
+  });
+
+  const receivedEpisodes = new Set(rows.map((r) => r.episodeId).filter(Boolean)).size;
+
+  const receivedMinutes =
+    Math.round((rows.reduce((acc, r) => acc + (r.durationSeconds ?? 0), 0) / 60) * 10) / 10;
+
+  return NextResponse.json({
+    ok: true,
+    orgId,
+    machineId: resolvedMachineId, // null => org-wide
+    range,
+    start,
+    receivedEpisodes,
+    receivedMinutes,
+    note:
+      "Control Tower received coverage (sync health). True coverage vs total downtime minutes can be added once CT has total downtime minutes per window.",
+  });
+}