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import { db } from '~/db/client'
import { userActivity, users } from '~/db/schema'
import { eq, sql, desc, gte, and } from 'drizzle-orm'
import { ALL_TIME_FLOOR_DATE } from './chart'
// Get today's date in YYYY-MM-DD format (UTC)
export function getTodayDate(): string {
return new Date().toISOString().split('T')[0]
}
// Record daily activity for a user (upsert - one row per user per day)
export async function recordDailyActivity(userId: string): Promise<void> {
const today = getTodayDate()
// Use ON CONFLICT to upsert (insert or do nothing if already exists)
await db
.insert(userActivity)
.values({
userId,
date: today,
})
.onConflictDoNothing({
target: [userActivity.userId, userActivity.date],
})
}
// Calculate current streak for a user (consecutive days ending today or yesterday)
export async function getUserStreak(userId: string): Promise<{
currentStreak: number
longestStreak: number
lastActiveDate: string | null
totalActiveDays: number
}> {
// Get all activity dates for user, ordered by date descending
const activities = await db
.select({ date: userActivity.date })
.from(userActivity)
.where(eq(userActivity.userId, userId))
.orderBy(desc(userActivity.date))
if (activities.length === 0) {
return {
currentStreak: 0,
longestStreak: 0,
lastActiveDate: null,
totalActiveDays: 0,
}
}
const today = getTodayDate()
const yesterday = new Date(Date.now() - 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const dates = activities.map((a) => a.date)
const lastActiveDate = dates[0]
// Current streak: must include today or yesterday to be "current"
let currentStreak = 0
if (lastActiveDate === today || lastActiveDate === yesterday) {
currentStreak = 1
const expectedDate = new Date(lastActiveDate)
for (let i = 1; i < dates.length; i++) {
expectedDate.setDate(expectedDate.getDate() - 1)
const expectedDateStr = expectedDate.toISOString().split('T')[0]
if (dates[i] === expectedDateStr) {
currentStreak++
} else {
break
}
}
}
// Calculate longest streak
let longestStreak = 0
let tempStreak = 1
for (let i = 1; i < dates.length; i++) {
const prevDate = new Date(dates[i - 1])
const currDate = new Date(dates[i])
const diffDays = Math.round(
(prevDate.getTime() - currDate.getTime()) / (24 * 60 * 60 * 1000),
)
if (diffDays === 1) {
tempStreak++
} else {
longestStreak = Math.max(longestStreak, tempStreak)
tempStreak = 1
}
}
longestStreak = Math.max(longestStreak, tempStreak)
return {
currentStreak,
longestStreak,
lastActiveDate,
totalActiveDays: dates.length,
}
}
// Get DAU/WAU/MAU stats
export async function getActiveUserStats(): Promise<{
dau: number
wau: number
mau: number
dauYesterday: number
wauPrevious: number
mauPrevious: number
}> {
const today = getTodayDate()
const yesterday = new Date(Date.now() - 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const last7Days = new Date(Date.now() - 7 * 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const last14Days = new Date(Date.now() - 14 * 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const last30Days = new Date(Date.now() - 30 * 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const last60Days = new Date(Date.now() - 60 * 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const [dauResult] = await db
.select({ count: sql<number>`count(distinct ${userActivity.userId})` })
.from(userActivity)
.where(eq(userActivity.date, today))
const [dauYesterdayResult] = await db
.select({ count: sql<number>`count(distinct ${userActivity.userId})` })
.from(userActivity)
.where(eq(userActivity.date, yesterday))
const [wauResult] = await db
.select({ count: sql<number>`count(distinct ${userActivity.userId})` })
.from(userActivity)
.where(gte(userActivity.date, last7Days))
// Previous 7 days (day 8-14)
const [wauPreviousResult] = await db
.select({ count: sql<number>`count(distinct ${userActivity.userId})` })
.from(userActivity)
.where(
and(
gte(userActivity.date, last14Days),
sql`${userActivity.date} < ${last7Days}`,
),
)
const [mauResult] = await db
.select({ count: sql<number>`count(distinct ${userActivity.userId})` })
.from(userActivity)
.where(gte(userActivity.date, last30Days))
// Previous 30 days (day 31-60)
const [mauPreviousResult] = await db
.select({ count: sql<number>`count(distinct ${userActivity.userId})` })
.from(userActivity)
.where(
and(
gte(userActivity.date, last60Days),
sql`${userActivity.date} < ${last30Days}`,
),
)
return {
dau: Number(dauResult.count),
dauYesterday: Number(dauYesterdayResult.count),
wau: Number(wauResult.count),
wauPrevious: Number(wauPreviousResult.count),
mau: Number(mauResult.count),
mauPrevious: Number(mauPreviousResult.count),
}
}
// Get top users by streak (for admin leaderboard)
// Optimized to use a single query to fetch all activity data
export async function getStreakLeaderboard(limit: number = 10): Promise<
Array<{
userId: string
userName: string | null
userEmail: string | null
userImage: string | null
currentStreak: number
longestStreak: number
totalActiveDays: number
}>
> {
const today = getTodayDate()
const yesterday = new Date(Date.now() - 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
// Single query: get all activity for users active in last 30 days, with user info
const last30Days = new Date(Date.now() - 30 * 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
// Get all activity dates for active users in one query
const allActivity = await db
.select({
userId: userActivity.userId,
date: userActivity.date,
})
.from(userActivity)
.where(
sql`${userActivity.userId} IN (
SELECT DISTINCT ${userActivity.userId}
FROM ${userActivity}
WHERE ${userActivity.date} >= ${last30Days}
)`,
)
.orderBy(userActivity.userId, desc(userActivity.date))
// Group by user and calculate streaks in memory
const userActivities = new Map<string, string[]>()
for (const row of allActivity) {
const dates = userActivities.get(row.userId) || []
dates.push(row.date)
userActivities.set(row.userId, dates)
}
// Calculate streaks for each user
const streakData: Array<{
userId: string
currentStreak: number
longestStreak: number
totalActiveDays: number
}> = []
for (const [userId, dates] of userActivities) {
const lastActiveDate = dates[0]
// Current streak: must include today or yesterday
let currentStreak = 0
if (lastActiveDate === today || lastActiveDate === yesterday) {
currentStreak = 1
const expectedDate = new Date(lastActiveDate)
for (let i = 1; i < dates.length; i++) {
expectedDate.setDate(expectedDate.getDate() - 1)
const expectedDateStr = expectedDate.toISOString().split('T')[0]
if (dates[i] === expectedDateStr) {
currentStreak++
} else {
break
}
}
}
// Longest streak
let longestStreak = 1
let tempStreak = 1
for (let i = 1; i < dates.length; i++) {
const prevDate = new Date(dates[i - 1])
const currDate = new Date(dates[i])
const diffDays = Math.round(
(prevDate.getTime() - currDate.getTime()) / (24 * 60 * 60 * 1000),
)
if (diffDays === 1) {
tempStreak++
} else {
longestStreak = Math.max(longestStreak, tempStreak)
tempStreak = 1
}
}
longestStreak = Math.max(longestStreak, tempStreak)
streakData.push({
userId,
currentStreak,
longestStreak,
totalActiveDays: dates.length,
})
}
// Sort by current streak, then longest streak
streakData.sort((a, b) => {
if (b.currentStreak !== a.currentStreak) {
return b.currentStreak - a.currentStreak
}
return b.longestStreak - a.longestStreak
})
// Get top N
const topUsers = streakData.slice(0, limit)
if (topUsers.length === 0) {
return []
}
// Fetch user info for top users
const userIds = topUsers.map((u) => u.userId)
const userInfos = await db
.select({
id: users.id,
name: users.name,
email: users.email,
image: users.image,
})
.from(users)
.where(sql`${users.id} IN ${sql.raw(`('${userIds.join("','")}')`)}`)
const userMap = new Map(userInfos.map((u) => [u.id, u]))
return topUsers.map((u) => {
const userInfo = userMap.get(u.userId)
return {
userId: u.userId,
userName: userInfo?.name ?? null,
userEmail: userInfo?.email ?? null,
userImage: userInfo?.image ?? null,
currentStreak: u.currentStreak,
longestStreak: u.longestStreak,
totalActiveDays: u.totalActiveDays,
}
})
}
// Get daily active user counts for chart with configurable time range
// days = null means all time (from ALL_TIME_FLOOR_DATE)
export async function getDailyActiveUserCounts(
days: number | null = 30,
): Promise<Array<{ date: string; count: number }>> {
const startDate =
days === null
? ALL_TIME_FLOOR_DATE.toISOString().split('T')[0]
: new Date(Date.now() - days * 24 * 60 * 60 * 1000)
.toISOString()
.split('T')[0]
const results = await db
.select({
date: userActivity.date,
count: sql<number>`count(distinct ${userActivity.userId})`,
})
.from(userActivity)
.where(gte(userActivity.date, startDate))
.groupBy(userActivity.date)
.orderBy(userActivity.date)
return results.map((r) => ({
date: r.date,
count: Number(r.count),
}))
}