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

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

    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: parseInt(id, 10) });

        if(campaign && campaign.owner === session.user.id)      return setResponseStatus(e, 403);

        const deleted = db.delete(campaignMembersTable).where(and(eq(campaignMembersTable.id, parseInt(id, 10)), eq(campaignMembersTable.user, session.user.id))).returning({ id: campaignMembersTable.id }).get();
        
        if(deleted)     return setResponseStatus(e, 200);
        else            return setResponseStatus(e, 404);
    }
    catch(_e)
    {
        return setResponseStatus(e, 500);
    }
});