import { db } from '$lib/server/db';
import * as table from '$lib/server/db/schema';
import { eq, inArray } from 'drizzle-orm';
import { GroupID, ServerID } from '$lib';
import { error, json } from '@sveltejs/kit';
import type { RequestHandler } from './$types';

export const GET: RequestHandler = async ({ params }) => {
  const { entityId } = params;

  if (!entityId) {
    throw error(400, 'Entity ID is required');
  }

  if (GroupID.is(entityId)) {
    const group = await db.select().from(table.group).where(eq(table.group.id, entityId));

    if (!group || group?.length == 0) {
      throw error(404, 'Group not found');
    }

    const members = await db
      .select()
      .from(table.user)
      .where(inArray(table.user.id, group[0].members as string[]));

    return json({
      members: members.map((member) => ({
        id: member.id,
        username: member.username,
        image: `https://api.dicebear.com/7.x/pixel-art/svg?seed=${member.username}`
      }))
    });
  }

  if (ServerID.is(entityId)) {
    const server = await db.select().from(table.server).where(eq(table.server.id, entityId));

    if (!server || server?.length == 0) {
      throw error(404, 'Server not found');
    }

    const members = await db
      .select()
      .from(table.user)
      .where(inArray(table.user.id, server[0].members as string[]));

    return json({
      members: members.map((member) => ({
        id: member.id,
        username: member.username,
        image: `https://api.dicebear.com/7.x/pixel-art/svg?seed=${member.username}`
      }))
    });
  }

  throw error(400, 'Invalid entity ID');
};