💎 Koa Session Prisma Store

store.ts

import { PrismaClient } from "#/gen/prisma"
import { stores } from "koa-session"

const prisma = new PrismaClient()

export const SessionStore: stores = {
	async get(key) {
		return prisma.session.findUnique({ where: { id: key } })
	},

	async set(key, session, maxAge) {
		if (typeof maxAge === "number")
			setTimeout(() => {
				this.destroy(key).catch((error: Error) => {
					console.error(error)
				})
			}, maxAge)

		const data = {
			id: key,
			expiresAt:
				typeof maxAge === "number" ? new Date(Date.now() + maxAge) : null,
			...session.data,
		}

		return prisma.session.upsert({
			where: { id: key },
			update: data,
			create: data,
		})
	},

	async destroy(key) {
		return prisma.session.delete({ where: { id: key } })
	},
}