Final MVP valid

app/api/analytics/coverage/route.ts

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+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.",
+  });
+}

app/api/analytics/downtime-events/route.ts

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+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 });
+
+function toISO(d: Date | null | undefined) {
+  return d ? d.toISOString() : null;
+}
+
+export async function GET(req: Request) {
+  // ✅ Session auth (cookie)
+  const session = await requireSession();
+  if (!session) return bad(401, "Unauthorized");
+  const orgId = session.orgId;
+
+  const url = new URL(req.url);
+
+  // ✅ Params
+  const range = coerceDowntimeRange(url.searchParams.get("range"));
+  const start = rangeToStart(range);
+
+  const machineId = url.searchParams.get("machineId"); // optional
+  const reasonCode = url.searchParams.get("reasonCode"); // optional
+
+  const limitRaw = url.searchParams.get("limit");
+  const limit = Math.min(Math.max(Number(limitRaw || 200), 1), 500);
+
+  // Optional pagination: return events before this timestamp (capturedAt)
+  const before = url.searchParams.get("before"); // ISO string
+  const beforeDate = before ? new Date(before) : null;
+  if (before && isNaN(beforeDate!.getTime())) return bad(400, "Invalid before timestamp");
+
+  // ✅ If machineId provided, verify it belongs to this org
+  if (machineId) {
+    const m = await prisma.machine.findFirst({
+      where: { id: machineId, orgId },
+      select: { id: true },
+    });
+    if (!m) return bad(404, "Machine not found");
+  }
+
+  // ✅ Query ReasonEntry as the "episode" table for downtime
+  // We only return rows that have an episodeId (true downtime episodes)
+  const where: any = {
+    orgId,
+    kind: "downtime",
+    episodeId: { not: null },
+    capturedAt: {
+      gte: start,
+      ...(beforeDate ? { lt: beforeDate } : {}),
+    },
+    ...(machineId ? { machineId } : {}),
+    ...(reasonCode ? { reasonCode } : {}),
+  };
+
+  const rows = await prisma.reasonEntry.findMany({
+    where,
+    orderBy: { capturedAt: "desc" },
+    take: limit,
+    select: {
+      id: true,
+      episodeId: true,
+      machineId: true,
+      reasonCode: true,
+      reasonLabel: true,
+      reasonText: true,
+      durationSeconds: true,
+      capturedAt: true,
+      episodeEndTs: true,
+      workOrderId: true,
+      meta: true,
+      createdAt: true,
+      machine: { select: { name: true } },
+    },
+  });
+
+  const events = rows.map((r) => {
+    const startAt = r.capturedAt;
+    const endAt =
+      r.episodeEndTs ??
+      (r.durationSeconds != null
+        ? new Date(startAt.getTime() + r.durationSeconds * 1000)
+        : null);
+
+    const durationSeconds = r.durationSeconds ?? null;
+    const durationMinutes =
+      durationSeconds != null ? Math.round((durationSeconds / 60) * 10) / 10 : null;
+
+    return {
+      id: r.id,
+      episodeId: r.episodeId,
+      machineId: r.machineId,
+      machineName: r.machine?.name ?? null,
+
+      reasonCode: r.reasonCode,
+      reasonLabel: r.reasonLabel ?? r.reasonCode,
+      reasonText: r.reasonText ?? null,
+
+      durationSeconds,
+      durationMinutes,
+
+      startAt: toISO(startAt),
+      endAt: toISO(endAt),
+      capturedAt: toISO(r.capturedAt),
+
+      workOrderId: r.workOrderId ?? null,
+      meta: r.meta ?? null,
+      createdAt: toISO(r.createdAt),
+    };
+  });
+
+  const nextBefore =
+    events.length > 0 ? events[events.length - 1]?.capturedAt ?? null : null;
+
+  return NextResponse.json({
+    ok: true,
+    orgId,
+    range,
+    start,
+    machineId: machineId ?? null,
+    reasonCode: reasonCode ?? null,
+    limit,
+    before: before ?? null,
+    nextBefore, // pass this back for pagination
+    events,
+  });
+}

app/api/analytics/pareto/route.ts

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+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) {
+  // ✅ Session auth (cookie)
+  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();
+
+  if (kind !== "downtime" && kind !== "scrap") {
+    return bad(400, "Invalid kind (downtime|scrap)");
+  }
+
+  // ✅ If machineId provided, verify it belongs to this org
+  if (machineId) {
+    const m = await prisma.machine.findFirst({
+      where: { id: machineId, orgId },
+      select: { id: true },
+    });
+    if (!m) return bad(404, "Machine not found");
+  }
+
+  // ✅ Scope by orgId (+ machineId if provided)
+  const grouped = await prisma.reasonEntry.groupBy({
+    by: ["reasonCode", "reasonLabel"],
+    where: {
+      orgId,
+      ...(machineId ? { machineId } : {}),
+      kind,
+      capturedAt: { gte: start },
+    },
+    _sum: {
+      durationSeconds: true,
+      scrapQty: true,
+    },
+    _count: { _all: true },
+  });
+
+  const itemsRaw = grouped
+    .map((g) => {
+      const value =
+        kind === "downtime"
+          ? Math.round(((g._sum.durationSeconds ?? 0) / 60) * 10) / 10 // minutes, 1 decimal
+          : g._sum.scrapQty ?? 0;
+
+      return {
+        reasonCode: g.reasonCode,
+        reasonLabel: g.reasonLabel ?? g.reasonCode,
+        value,
+        count: g._count._all,
+      };
+    })
+    .filter((x) => x.value > 0);
+
+  itemsRaw.sort((a, b) => b.value - a.value);
+
+  const total = itemsRaw.reduce((acc, x) => acc + x.value, 0);
+
+  let cum = 0;
+  let threshold80Index: number | null = null;
+
+  const rows = itemsRaw.map((x, idx) => {
+    const pctOfTotal = total > 0 ? (x.value / total) * 100 : 0;
+    cum += x.value;
+    const cumulativePct = total > 0 ? (cum / total) * 100 : 0;
+
+    if (threshold80Index === null && cumulativePct >= 80) threshold80Index = idx;
+
+    return {
+      reasonCode: x.reasonCode,
+      reasonLabel: x.reasonLabel,
+      minutesLost: kind === "downtime" ? x.value : undefined,
+      scrapQty: kind === "scrap" ? x.value : undefined,
+      pctOfTotal,
+      cumulativePct,
+      count: x.count,
+    };
+  });
+
+  const top3 = rows.slice(0, 3);
+  const threshold80 =
+    threshold80Index === null
+      ? null
+      : {
+          index: threshold80Index,
+          reasonCode: rows[threshold80Index].reasonCode,
+          reasonLabel: rows[threshold80Index].reasonLabel,
+        };
+
+  return NextResponse.json({
+    ok: true,
+    orgId,
+    machineId: machineId ?? null,
+    kind,
+    range,       // ✅ now defined correctly
+    start,       // ✅ now defined correctly
+    totalMinutesLost: kind === "downtime" ? total : undefined,
+    totalScrap: kind === "scrap" ? total : undefined,
+    rows,
+    top3,
+    threshold80,
+    // (optional) keep old shape if anything else uses it:
+    items: itemsRaw.map((x, i) => ({
+      ...x,
+      cumPct: rows[i]?.cumulativePct ?? 0,
+    })),
+    total,
+  });
+}