added session operations and cleanup job

packages/backend/src/db/queries/index.ts

@@ -1,4 +1,5 @@
 export * from "./issues";
 export * from "./organisations";
 export * from "./projects";
+export * from "./sessions";
 export * from "./users";

packages/backend/src/db/queries/sessions.ts

@@ -0,0 +1,37 @@
+import { Session } from "@issue/shared";
+import { eq, lt } from "drizzle-orm";
+import { db } from "../client";
+
+const generateCsrfToken = () => {
+    const bytes = new Uint8Array(32);
+    crypto.getRandomValues(bytes);
+    return Array.from(bytes, (b) => b.toString(16).padStart(2, "0")).join("");
+};
+
+const SESSION_DURATION_MS = 7 * 24 * 60 * 60 * 1000; // 7 days in ms
+
+export async function createSession(userId: number) {
+    const csrfToken = generateCsrfToken();
+    const expiresAt = new Date(Date.now() + SESSION_DURATION_MS);
+
+    const [session] = await db.insert(Session).values({ userId, csrfToken, expiresAt }).returning();
+    return session;
+}
+
+export async function getSession(sessionId: number) {
+    const [session] = await db.select().from(Session).where(eq(Session.id, sessionId));
+    return session;
+}
+
+export async function deleteSession(sessionId: number) {
+    await db.delete(Session).where(eq(Session.id, sessionId));
+}
+
+export async function deleteUserSessions(userId: number) {
+    await db.delete(Session).where(eq(Session.userId, userId));
+}
+
+export async function cleanupExpiredSessions() {
+    const result = await db.delete(Session).where(lt(Session.expiresAt, new Date()));
+    return result.rowCount ?? 0;
+}