Final MVP valid

app/api/downtime/actions/reminders/route.ts

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+import { NextResponse } from "next/server";
+import { prisma } from "@/lib/prisma";
+import { requireSession } from "@/lib/auth/requireSession";
+import { buildDowntimeActionReminderEmail, sendEmail } from "@/lib/email";
+import { getBaseUrl } from "@/lib/appUrl";
+
+const DEFAULT_DUE_DAYS = 7;
+const DEFAULT_LIMIT = 100;
+const MS_PER_HOUR = 60 * 60 * 1000;
+
+type ReminderStage = "week" | "day" | "hour" | "overdue";
+
+function formatDueDate(value?: Date | null) {
+  if (!value) return null;
+  return value.toISOString().slice(0, 10);
+}
+
+function getReminderStage(dueDate: Date, now: Date): ReminderStage | null {
+  const diffMs = dueDate.getTime() - now.getTime();
+  if (diffMs <= 0) return "overdue";
+  if (diffMs <= MS_PER_HOUR) return "hour";
+  if (diffMs <= 24 * MS_PER_HOUR) return "day";
+  if (diffMs <= 7 * 24 * MS_PER_HOUR) return "week";
+  return null;
+}
+
+function buildActionUrl(baseUrl: string, action: { machineId: string | null; reasonCode: string | null; hmDay: number | null; hmHour: number | null }) {
+  const params = new URLSearchParams();
+  if (action.machineId) params.set("machineId", action.machineId);
+  if (action.reasonCode) params.set("reasonCode", action.reasonCode);
+  if (action.hmDay != null && action.hmHour != null) {
+    params.set("hmDay", String(action.hmDay));
+    params.set("hmHour", String(action.hmHour));
+  }
+  const qs = params.toString();
+  return qs ? `${baseUrl}/downtime?${qs}` : `${baseUrl}/downtime`;
+}
+
+async function authorizeRequest(req: Request) {
+  const secret = process.env.DOWNTIME_ACTION_REMINDER_SECRET;
+  if (!secret) {
+    const session = await requireSession();
+    return { ok: !!session };
+  }
+  const authHeader = req.headers.get("authorization") || "";
+  const token = authHeader.startsWith("Bearer ") ? authHeader.slice(7).trim() : null;
+  const urlToken = new URL(req.url).searchParams.get("token");
+  return { ok: token === secret || urlToken === secret };
+}
+
+export async function POST(req: Request) {
+  const auth = await authorizeRequest(req);
+  if (!auth.ok) return NextResponse.json({ ok: false, error: "Unauthorized" }, { status: 401 });
+
+  const sp = new URL(req.url).searchParams;
+  const dueInDays = Number(sp.get("dueInDays") || DEFAULT_DUE_DAYS);
+  const limit = Number(sp.get("limit") || DEFAULT_LIMIT);
+
+  const now = new Date();
+  const dueBy = new Date(now.getTime() + dueInDays * 24 * 60 * 60 * 1000);
+
+  const actions = await prisma.downtimeAction.findMany({
+    where: {
+      status: { not: "done" },
+      ownerUserId: { not: null },
+      dueDate: { not: null, lte: dueBy },
+    },
+    include: {
+      ownerUser: { select: { name: true, email: true } },
+      org: { select: { name: true } },
+    },
+    orderBy: { dueDate: "asc" },
+    take: Number.isFinite(limit) ? Math.max(1, Math.min(500, limit)) : DEFAULT_LIMIT,
+  });
+
+  const baseUrl = getBaseUrl(req);
+  const sentIds: string[] = [];
+  const failures: Array<{ id: string; error: string }> = [];
+
+  for (const action of actions) {
+    const email = action.ownerUser?.email;
+    if (!email) continue;
+    if (!action.dueDate) continue;
+    const stage = getReminderStage(action.dueDate, now);
+    if (!stage) continue;
+    if (action.reminderStage === stage) continue;
+    try {
+      const content = buildDowntimeActionReminderEmail({
+        appName: "MIS Control Tower",
+        orgName: action.org.name,
+        actionTitle: action.title,
+        assigneeName: action.ownerUser?.name ?? email,
+        dueDate: formatDueDate(action.dueDate),
+        actionUrl: buildActionUrl(baseUrl, action),
+        priority: action.priority,
+        status: action.status,
+      });
+      await sendEmail({
+        to: email,
+        subject: content.subject,
+        text: content.text,
+        html: content.html,
+      });
+      sentIds.push(action.id);
+      await prisma.downtimeAction.update({
+        where: { id: action.id },
+        data: { reminderStage: stage, lastReminderAt: now },
+      });
+    } catch (err: unknown) {
+      failures.push({
+        id: action.id,
+        error: err instanceof Error ? err.message : "Failed to send reminder email",
+      });
+    }
+  }
+
+  return NextResponse.json({
+    ok: true,
+    sent: sentIds.length,
+    failed: failures.length,
+    failures,
+  });
+}