import { count, desc, eq } from "drizzle-orm"
import { db } from "../drizzle/db"
import { urls, visits } from "../drizzle/schema"

export async function getDashboardStats() {
    try {
        const [urlsCount] = await db.select({ count: count() }).from(urls)
        const [visitsCount] = await db.select({ count: count() }).from(visits)
        const mostVisitedUrl = await db
            .select({
                id: urls.id,
                title: urls.title,
                slug: urls.slug,
                visitCount: count(visits.id)
            })
            .from(urls)
            .leftJoin(visits, eq(urls.id, visits.urlId))
            .groupBy(urls.id, urls.title, urls.slug)
            .orderBy(desc(count(visits.id)))
            .limit(1)

        return {
            totalUrls: urlsCount.count,
            totalVisits: visitsCount.count,
            mostVisitedUrl: mostVisitedUrl[0] || null
        }
    } catch (error) {
        console.error("Failed to fetch dashboard stats:", error)
        return {
            totalUrls: 0,
            totalVisits: 0,
            mostVisitedUrl: null
        }
    }
}