import { and, eq, sql } from "drizzle-orm";
import { campaignMembersTable, campaignTable } from "~/db/schema";

export default defineEventHandler(async (e) => {
    const _id = getRouterParam(e, "id");
    if(!_id)
    {
        setResponseStatus(e, 400);
        return;
    }
    const id = parseInt(_id, 10);

    const session = await getUserSession(e);
    if(!session || !session.user)
    {
        setResponseStatus(e, 401);
        return;
    }

    const db = useDatabase();
    try
    {
        const campaign = db.select({ owner: campaignTable.owner }).from(campaignTable).where(and(eq(campaignTable.id, sql.placeholder('id')))).get({ id: id });
        if(campaign && campaign.owner === session.user.id)      return setResponseStatus(e, 403);

        const members = db.select({ id: campaignMembersTable.user }).from(campaignMembersTable).where(and(eq(campaignMembersTable.id, sql.placeholder('id')), eq(campaignMembersTable.user, sql.placeholder('user')))).get({ id: id, user: session.user.id });
        if(members)      return setResponseStatus(e, 403);

        db.insert(campaignMembersTable).values({ id, rights: 'player', user: session.user!.id });
        
        return setResponseStatus(e, 200);
    }
    catch(_e)
    {
        return setResponseStatus(e, 500);
    }
});