feat: rango de fechas personalizado y datos hasta ayer (salvo Hoy)

Selector libre en Ad Tracker/Seguimiento; presets y KPIs cierran en ayer.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/lib/ad-tracker-range.ts

@@ -1,4 +1,4 @@
-/** Date presets for Ad Tracker (Brava-style). No date-fns dependency. */
+/** Date presets for Ad Tracker. Data ends at yesterday unless preset is «Hoy». */
 
 export type RangePreset =
   | 'today'
@@ -34,6 +34,36 @@ function iso(d: Date): string {
   return d.toISOString().slice(0, 10);
 }
 
+/** UTC calendar day for «today». */
+export function utcToday(now = new Date()): Date {
+  return new Date(
+    Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate())
+  );
+}
+
+/** UTC calendar day for «yesterday». */
+export function utcYesterday(now = new Date()): Date {
+  const d = utcToday(now);
+  d.setUTCDate(d.getUTCDate() - 1);
+  return d;
+}
+
+export function isoToday(now = new Date()): string {
+  return iso(utcToday(now));
+}
+
+export function isoYesterday(now = new Date()): string {
+  return iso(utcYesterday(now));
+}
+
+/**
+ * Max date allowed in the picker / default until.
+ * Only «Hoy» may include today; everything else ends at yesterday.
+ */
+export function maxDataDate(preset: RangePreset, now = new Date()): string {
+  return preset === 'today' ? isoToday(now) : isoYesterday(now);
+}
+
 function startOfWeekMon(d: Date): Date {
   const x = new Date(Date.UTC(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate()));
   const day = x.getUTCDay();
@@ -64,45 +94,65 @@ export function formatRangeLabel(since: string, until: string): string {
   return `${a[2]} ${MONTHS_ES[a[1] - 1]} ${a[0]} - ${b[2]} ${MONTHS_ES[b[1] - 1]} ${b[0]}`;
 }
 
+function parseIsoDay(s: string): Date | null {
+  if (!/^\d{4}-\d{2}-\d{2}$/.test(s)) return null;
+  const d = new Date(s + 'T00:00:00Z');
+  return Number.isNaN(d.getTime()) ? null : d;
+}
+
+/**
+ * Resolve a date range.
+ * All presets except «today» end at yesterday (ads warehouse lag).
+ * Custom ranges are clamped so until ≤ yesterday.
+ */
 export function resolveAdRange(
   preset: RangePreset,
-  custom?: { since?: string; until?: string }
+  custom?: { since?: string; until?: string },
+  now = new Date()
 ): DateRange {
-  const now = new Date();
-  const today = new Date(
-    Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate())
-  );
+  const today = utcToday(now);
+  const yesterday = utcYesterday(now);
+  /** Anchor end for non-today presets. */
+  const end = yesterday;
 
-  let since = today;
-  let until = today;
+  let since = new Date(end);
+  let until = new Date(end);
 
   switch (preset) {
     case 'today':
+      since = new Date(today);
+      until = new Date(today);
       break;
     case 'yesterday':
-      since = new Date(today);
-      since.setUTCDate(since.getUTCDate() - 1);
-      until = new Date(since);
+      since = new Date(yesterday);
+      until = new Date(yesterday);
       break;
     case 'last_7d':
-      since = new Date(today);
+      since = new Date(end);
       since.setUTCDate(since.getUTCDate() - 6);
+      until = new Date(end);
       break;
     case 'last_14d':
-      since = new Date(today);
+      since = new Date(end);
       since.setUTCDate(since.getUTCDate() - 13);
+      until = new Date(end);
       break;
     case 'last_28d':
-      since = new Date(today);
+      since = new Date(end);
       since.setUTCDate(since.getUTCDate() - 27);
+      until = new Date(end);
       break;
     case 'last_30d':
-      since = new Date(today);
+      since = new Date(end);
       since.setUTCDate(since.getUTCDate() - 29);
+      until = new Date(end);
       break;
     case 'this_week':
       since = startOfWeekMon(today);
-      until = today;
+      until = new Date(end);
+      if (since.getTime() > until.getTime()) {
+        since = new Date(until);
+      }
       break;
     case 'last_week': {
       const thisMon = startOfWeekMon(today);
@@ -113,7 +163,11 @@ export function resolveAdRange(
     }
     case 'this_month':
       since = new Date(Date.UTC(today.getUTCFullYear(), today.getUTCMonth(), 1));
-      until = today;
+      until = new Date(end);
+      if (since.getTime() > until.getTime()) {
+        // 1st of month = today → no complete days yet; show yesterday of prev month
+        since = new Date(until);
+      }
       break;
     case 'last_month': {
       const firstThis = new Date(
@@ -124,10 +178,17 @@ export function resolveAdRange(
       since = new Date(Date.UTC(until.getUTCFullYear(), until.getUTCMonth(), 1));
       break;
     }
-    case 'custom':
-      since = custom?.since ? new Date(custom.since + 'T00:00:00Z') : since;
-      until = custom?.until ? new Date(custom.until + 'T00:00:00Z') : until;
+    case 'custom': {
+      const maxUntil = yesterday;
+      let s = parseIsoDay(custom?.since || '') || new Date(end);
+      let u = parseIsoDay(custom?.until || '') || new Date(end);
+      // Clamp: never past yesterday for custom
+      if (u.getTime() > maxUntil.getTime()) u = new Date(maxUntil);
+      if (s.getTime() > u.getTime()) s = new Date(u);
+      since = s;
+      until = u;
       break;
+    }
   }
 
   const s = iso(since);