Timeline

app/api/machines/[machineId]/route.ts

@@ -246,10 +246,36 @@ const events = normalized
   .slice(0, 30);
 
 
+// ---- cycles window ----
+const url = new URL(_req.url);
+const windowSec = Number(url.searchParams.get("windowSec") ?? "10800"); // default 3h
+
+const latestKpi = machine.kpiSnapshots[0] ?? null;
+
+// If KPI cycleTime missing, fallback to DB cycles (we fetch 1 first)
+const latestCycleForIdeal = await prisma.machineCycle.findFirst({
+  where: { orgId: session.orgId, machineId },
+  orderBy: { ts: "desc" },
+  select: { theoreticalCycleTime: true },
+});
+
+const effectiveCycleTime =
+  latestKpi?.cycleTime ??
+  latestCycleForIdeal?.theoreticalCycleTime ??
+  null;
+
+// Estimate how many cycles we need to cover the window.
+// Add buffer so the chart doesn’t look “tight”.
+const estCycleSec = Math.max(1, Number(effectiveCycleTime ?? 14));
+const needed = Math.ceil(windowSec / estCycleSec) + 50;
+
+// Safety cap to avoid crazy payloads
+const takeCycles = Math.min(5000, Math.max(200, needed));
+
 const rawCycles = await prisma.machineCycle.findMany({
   where: { orgId: session.orgId, machineId },
   orderBy: { ts: "desc" },
-  take: 200,
+  take: takeCycles,
   select: {
     ts: true,
     cycleCount: true,
@@ -265,23 +291,14 @@ const cycles = rawCycles
   .slice()
   .reverse()
   .map((c) => ({
-    ts: c.ts,                       // keep Date for “time ago” UI
-    t: c.ts.getTime(),              // numeric x-axis for charts
+    ts: c.ts,
+    t: c.ts.getTime(),
     cycleCount: c.cycleCount ?? null,
-    actual: c.actualCycleTime,      // rename to what chart expects
+    actual: c.actualCycleTime,
     ideal: c.theoreticalCycleTime ?? null,
     workOrderId: c.workOrderId ?? null,
     sku: c.sku ?? null,
-  }
-));
-
-const latestKpi = machine.kpiSnapshots[0] ?? null;
-
-// rawCycles is ordered DESC, so [0] is the most recent cycle row
-const latestCycleIdeal = rawCycles[0]?.theoreticalCycleTime ?? null;
-
-// REAL effective value (not mock): prefer KPI if present, else fallback to cycles table
-const effectiveCycleTime = latestKpi?.cycleTime ?? latestCycleIdeal ?? null;
+  }));