53 lines
1.9 KiB
TypeScript
53 lines
1.9 KiB
TypeScript
import { and, eq, gt, lt, lte, or, sql } from 'drizzle-orm';
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import { invites, users } from '../../drizzle/schema';
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import { db } from '../lib/db';
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export const INVITE_TOKEN_HEADER = 'x-invite-token';
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export const INVITE_LIFETIME_MS = 7 * 24 * 60 * 60 * 1000;
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// still has uses left and has not run out
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const usable = () => and(lt(invites.uses, invites.maxUses), gt(invites.expiresAt, new Date()));
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/**
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* Takes one use of an invite. It is a single statement, so two people
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* registering with the same single use link at once cannot both get in.
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*/
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export const claimInvite = async (token: string): Promise<boolean> => {
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const claimed = await db.update(invites)
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.set({ uses: sql`${invites.uses} + 1` })
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.where(and(eq(invites.token, token), usable()))
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.returning({ id: invites.id });
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return claimed.length > 0;
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};
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/** Gives a use back when the registration it was taken for did not go through. */
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export const releaseInvite = async (token: string) => {
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await db.update(invites)
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.set({ uses: sql`${invites.uses} - 1` })
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.where(and(eq(invites.token, token), gt(invites.uses, 0)));
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};
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export const findUsableInvite = async (token: string) => {
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const rows = await db
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.select({
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expiresAt: invites.expiresAt,
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maxUses: invites.maxUses,
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uses: invites.uses,
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inviterId: users.id,
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inviterName: users.name,
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inviterImage: users.image,
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})
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.from(invites)
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.innerJoin(users, eq(users.id, invites.createdBy))
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.where(and(eq(invites.token, token), usable()))
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.limit(1);
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return rows[0] ?? null;
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};
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/** Used up and expired invites are of no use to anyone, so they are dropped. */
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export const deleteDeadInvites = async () => {
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await db.delete(invites).where(or(lte(invites.expiresAt, new Date()), sql`${invites.uses} >= ${invites.maxUses}`));
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};
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