feat: widgets and ai chat

packages/db/src/queries/dash/dash.ts

@@ -1,19 +1,24 @@
 import {
+  analyticsLoginEvents,
   and,
   course,
   dashOrgStats,
   db,
   desc,
   eq,
+  gte,
   group,
   groupmember,
   isNotNull,
   lesson,
   lessonCompletion,
+  organizationmember,
   profile,
   sql
 } from '@db/drizzle';
 
+import { ROLE } from '@cio/utils/constants';
+
 export function getCourseStats(orgId: string) {
   const subquery = db
     .select({
@@ -135,3 +140,62 @@ export function getRecentCertifications(orgId: string) {
 export function getDashOrgStats(orgId: string) {
   return db.select().from(dashOrgStats).where(eq(dashOrgStats.orgId, orgId));
 }
+
+/**
+ * Returns login counts grouped by day-of-week (0 = Sunday … 6 = Saturday) for
+ * students of the given organization over the last `days` days.
+ *
+ * Each row in analytics_login_events is already one-per-user-per-day, so the
+ * counts represent distinct active students per weekday — the chart shows
+ * "most active day," not raw login volume.
+ */
+export function getOrgStudentLoginsByDayOfWeek(orgId: string, days: number) {
+  const since = sql`CURRENT_DATE - ${sql.raw(`${days}`)}::int`;
+
+  return db
+    .select({
+      dayOfWeek: sql<number>`EXTRACT(DOW FROM ${analyticsLoginEvents.loggedInDate})::int`.as('day_of_week'),
+      count: sql<number>`COUNT(*)::int`.as('count')
+    })
+    .from(analyticsLoginEvents)
+    .innerJoin(organizationmember, eq(organizationmember.profileId, analyticsLoginEvents.userId))
+    .where(
+      and(
+        eq(organizationmember.organizationId, orgId),
+        eq(organizationmember.roleId, ROLE.STUDENT),
+        gte(analyticsLoginEvents.loggedInDate, since)
+      )
+    )
+    .groupBy(sql`day_of_week`)
+    .orderBy(sql`day_of_week`);
+}
+
+function getDateKey(date: Date) {
+  return date.toISOString().slice(0, 10);
+}
+
+export async function getUserLoginStreak(userId: string) {
+  const rows = await db
+    .select({
+      loggedInDate: analyticsLoginEvents.loggedInDate
+    })
+    .from(analyticsLoginEvents)
+    .where(eq(analyticsLoginEvents.userId, userId))
+    .orderBy(desc(analyticsLoginEvents.loggedInDate))
+    .limit(90);
+
+  const loggedInDates = new Set(rows.map((row) => row.loggedInDate));
+  const cursorDate = new Date();
+
+  if (!loggedInDates.has(getDateKey(cursorDate))) {
+    cursorDate.setDate(cursorDate.getDate() - 1);
+  }
+
+  let daysActive = 0;
+  while (loggedInDates.has(getDateKey(cursorDate))) {
+    daysActive += 1;
+    cursorDate.setDate(cursorDate.getDate() - 1);
+  }
+
+  return { daysActive };
+}