import * as z from 'zod';
import { INSTANCE_SETTINGS_ID, REGISTRATION_MODES, instanceSettings } from '~~/drizzle/schema';
import { db } from '~~/server/lib/db';

export default defineEventHandler(async (event) => {
    await protectAdminRoute(event);

    const result = await readValidatedBody(event, (body) =>
        z
            .object({
                registration: z.enum(REGISTRATION_MODES),
            })
            .safeParse(body),
    );

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

    if (isRegistrationLocked()) {
        throw createError({
            statusCode: 409,
            statusMessage: 'Registration is locked by the environment',
            data: {
                code: 'REGISTRATION_LOCKED',
            },
        });
    }

    const { registration } = result.data;

    await db.insert(instanceSettings)
        .values({ id: INSTANCE_SETTINGS_ID, registration })
        .onConflictDoUpdate({
            target: instanceSettings.id,
            set: { registration, updatedAt: new Date() },
        });

    return { registration, registrationLocked: false };
});