changes

lib/analytics/downtimeFilters.ts

@@ -0,0 +1,204 @@
+import { prisma } from "@/lib/prisma";
+import { normalizeShiftOverrides } from "@/lib/settings";
+
+type PlannedFilter = "all" | "planned" | "unplanned";
+type ShiftFilter = "all" | "A" | "B" | "C";
+
+type ShiftLike = {
+  name: string;
+  startTime?: string | null;
+  endTime?: string | null;
+  start?: string | null;
+  end?: string | null;
+  enabled?: boolean;
+};
+
+type ShiftContext = {
+  timeZone: string;
+  shifts: ShiftLike[];
+  overrides: Record<string, ShiftLike[]> | undefined;
+};
+
+const SHIFT_ALIAS: ShiftFilter[] = ["A", "B", "C"];
+const TIME_RE = /^([01]\d|2[0-3]):([0-5]\d)$/;
+
+const WEEKDAY_KEY_MAP: Record<string, string> = {
+  Sun: "sun",
+  Mon: "mon",
+  Tue: "tue",
+  Wed: "wed",
+  Thu: "thu",
+  Fri: "fri",
+  Sat: "sat",
+};
+
+const WEEKDAY_KEYS = ["sun", "mon", "tue", "wed", "thu", "fri", "sat"] as const;
+
+function asRecord(value: unknown) {
+  return value && typeof value === "object" && !Array.isArray(value)
+    ? (value as Record<string, unknown>)
+    : null;
+}
+
+function parseTimeMinutes(value?: string | null) {
+  if (!value || !TIME_RE.test(value)) return null;
+  const [hh, mm] = value.split(":");
+  return Number(hh) * 60 + Number(mm);
+}
+
+function getLocalMinutes(ts: Date, timeZone: string) {
+  try {
+    const parts = new Intl.DateTimeFormat("en-US", {
+      timeZone,
+      hour: "2-digit",
+      minute: "2-digit",
+      hourCycle: "h23",
+    }).formatToParts(ts);
+    const hours = Number(parts.find((p) => p.type === "hour")?.value ?? "0");
+    const minutes = Number(parts.find((p) => p.type === "minute")?.value ?? "0");
+    return hours * 60 + minutes;
+  } catch {
+    return ts.getUTCHours() * 60 + ts.getUTCMinutes();
+  }
+}
+
+function getLocalDayKey(ts: Date, timeZone: string) {
+  try {
+    const weekday = new Intl.DateTimeFormat("en-US", {
+      timeZone,
+      weekday: "short",
+    }).format(ts);
+    return WEEKDAY_KEY_MAP[weekday] ?? WEEKDAY_KEYS[ts.getUTCDay()];
+  } catch {
+    return WEEKDAY_KEYS[ts.getUTCDay()];
+  }
+}
+
+function resolveShiftAlias(context: ShiftContext, ts: Date): ShiftFilter | null {
+  const dayKey = getLocalDayKey(ts, context.timeZone);
+  const dayOverrides = context.overrides?.[dayKey];
+  const activeShifts = dayOverrides ?? context.shifts;
+  if (!activeShifts.length) return null;
+
+  const nowMin = getLocalMinutes(ts, context.timeZone);
+  let enabledOrdinal = 0;
+  for (const shift of activeShifts) {
+    if (shift.enabled === false) continue;
+    const start = parseTimeMinutes(shift.startTime ?? shift.start ?? null);
+    const end = parseTimeMinutes(shift.endTime ?? shift.end ?? null);
+    if (start == null || end == null) continue;
+
+    const alias = SHIFT_ALIAS[enabledOrdinal] ?? null;
+    enabledOrdinal += 1;
+    if (!alias) continue;
+
+    if (start <= end) {
+      if (nowMin >= start && nowMin < end) return alias;
+    } else if (nowMin >= start || nowMin < end) {
+      return alias;
+    }
+  }
+
+  return null;
+}
+
+function isMicrostopLike(row: {
+  episodeId?: string | null;
+  meta?: unknown;
+}) {
+  const episodeId = String(row.episodeId ?? "").toLowerCase();
+  if (episodeId.startsWith("microstop:")) return true;
+
+  const meta = asRecord(row.meta);
+  const anomalyType = String(meta?.anomalyType ?? "").toLowerCase();
+  if (anomalyType === "microstop") return true;
+
+  const eventType = String(meta?.eventType ?? "").toLowerCase();
+  return eventType === "microstop";
+}
+
+function normalizePlanned(raw: string | null): PlannedFilter {
+  const v = String(raw ?? "").trim().toLowerCase();
+  if (v === "planned") return "planned";
+  if (v === "unplanned") return "unplanned";
+  return "all";
+}
+
+export function resolvePlannedFilter(raw: string | null, includeMoldChange: boolean): PlannedFilter {
+  const normalized = normalizePlanned(raw);
+  if (raw != null && String(raw).trim() !== "") return normalized;
+  return includeMoldChange ? "all" : "unplanned";
+}
+
+export function normalizeShiftFilter(raw: string | null): ShiftFilter {
+  const v = String(raw ?? "").trim().toUpperCase();
+  if (v === "A" || v === "B" || v === "C") return v;
+  return "all";
+}
+
+export function normalizeMicrostopLtMin(raw: string | null) {
+  if (!raw) return null;
+  const n = Number(raw);
+  if (!Number.isFinite(n) || n <= 0) return null;
+  return n;
+}
+
+function passesPlannedFilter(reasonCode: string, planned: PlannedFilter) {
+  if (planned === "planned") return reasonCode === "MOLD_CHANGE";
+  if (planned === "unplanned") return reasonCode !== "MOLD_CHANGE";
+  return true;
+}
+
+export async function loadDowntimeShiftContext(orgId: string): Promise<ShiftContext> {
+  const [shifts, settings] = await Promise.all([
+    prisma.orgShift.findMany({
+      where: { orgId },
+      orderBy: { sortOrder: "asc" },
+      select: { name: true, startTime: true, endTime: true, enabled: true },
+    }),
+    prisma.orgSettings.findUnique({
+      where: { orgId },
+      select: { timezone: true, shiftScheduleOverridesJson: true },
+    }),
+  ]);
+
+  return {
+    timeZone: settings?.timezone || "UTC",
+    shifts,
+    overrides: normalizeShiftOverrides(settings?.shiftScheduleOverridesJson),
+  };
+}
+
+export function applyDowntimeFilters<T extends {
+  reasonCode: string;
+  capturedAt: Date;
+  durationSeconds?: number | null;
+  episodeId?: string | null;
+  meta?: unknown;
+}>(
+  rows: T[],
+  options: {
+    planned: PlannedFilter;
+    shift: ShiftFilter;
+    microstopLtMin: number | null;
+    shiftContext: ShiftContext | null;
+  }
+) {
+  return rows.filter((row) => {
+    if (!passesPlannedFilter(row.reasonCode, options.planned)) return false;
+
+    if (options.shift !== "all") {
+      if (!options.shiftContext) return false;
+      const alias = resolveShiftAlias(options.shiftContext, row.capturedAt);
+      if (alias !== options.shift) return false;
+    }
+
+    if (options.microstopLtMin != null && isMicrostopLike(row)) {
+      if (row.durationSeconds == null) return false;
+      const durationMin = row.durationSeconds / 60;
+      if (!(durationMin < options.microstopLtMin)) return false;
+    }
+
+    return true;
+  });
+}