import { nanoid } from 'nanoid';
import * as z from 'zod';
import { invites } from '~~/drizzle/schema';
import { db } from '~~/server/lib/db';

const TOKEN_LENGTH = 32;
const HOUR_MS = 60 * 60 * 1000;
const MAX_USES = 1000;
const MAX_HOURS = 24 * 365;

/** Creates an invite link that works for the given time and number of people. */
export default defineEventHandler(async (event) => {
    await protectAdminRoute(event);

    const result = await readValidatedBody(event, (body) =>
        z
            .object({
                maxUses: z.int().min(1).max(MAX_USES),
                expiresInHours: z.int().min(1).max(MAX_HOURS),
            })
            .safeParse(body),
    );

    if (!result.success) {
        throw createError({
            statusCode: 400,
            message: result.error.issues[0]!.message,
        });
    }

    const { maxUses, expiresInHours } = result.data;

    const [invite] = await db.insert(invites)
        .values({
            token: nanoid(TOKEN_LENGTH),
            createdBy: event.context.user!.id as string,
            maxUses,
            expiresAt: new Date(Date.now() + expiresInHours * HOUR_MS),
        })
        .returning({
            id: invites.id,
            token: invites.token,
            maxUses: invites.maxUses,
            uses: invites.uses,
            expiresAt: invites.expiresAt,
            createdAt: invites.createdAt,
        });

    return invite!;
});