import { json } from '@sveltejs/kit';
import type { RequestHandler } from './$types';
import { requireAdmin } from '$lib/server/admin/auth.js';
import * as data from '$lib/server/admin/data.js';

export const GET: RequestHandler = async (event) => {
	requireAdmin((await event.locals.auth())?.user?.id);
	const q = event.url.searchParams.get('q') ?? undefined;
	const countryCode = event.url.searchParams.get('country_code') ?? undefined;
	return json(data.listCities(q, countryCode));
};

export const POST: RequestHandler = async (event) => {
	requireAdmin((await event.locals.auth())?.user?.id);
	const body = await event.request.json();
	const { name, country, country_code, population } = body as {
		name?: string;
		country?: string;
		country_code?: string;
		population?: number | null;
	};
	if (!name?.trim() || !country?.trim() || !country_code?.trim()) {
		return json({ error: 'name, country and country_code required' }, { status: 400 });
	}
	return json(data.createCity(name, country, country_code, population ?? null));
};

export const PATCH: RequestHandler = async (event) => {
	requireAdmin((await event.locals.auth())?.user?.id);
	const body = await event.request.json();
	const { id, name, country, country_code, population } = body as {
		id?: number;
		name?: string;
		country?: string;
		country_code?: string;
		population?: number | null;
	};
	if (id == null || !name?.trim() || !country?.trim() || !country_code?.trim()) {
		return json({ error: 'id, name, country and country_code required' }, { status: 400 });
	}
	data.updateCity(id, name, country, country_code, population ?? null);
	return json({ ok: true });
};

export const DELETE: RequestHandler = async (event) => {
	requireAdmin((await event.locals.auth())?.user?.id);
	const id = parseInt(event.url.searchParams.get('id') ?? '');
	if (isNaN(id)) return json({ error: 'id required' }, { status: 400 });
	data.deleteCity(id);
	return json({ ok: true });
};