import { json, error } from '@sveltejs/kit';
import type { RequestHandler } from './$types';
import { env } from '$env/dynamic/public';

// New promo catalogs are created by the same taobin_image service as menu images.
const API_BASE = env.PUBLIC_POST_IMAGE;

export const POST: RequestHandler = async ({ request }) => {
	try {
		const formData = await request.formData();

		const country = formData.get('country') as string;
		const uid = formData.get('uid') as string;
		const displayName = formData.get('displayName') as string;
		const email = formData.get('email') as string;
		const slug = formData.get('slug') as string;
		const name = formData.get('name') as string;
		const start = formData.get('start') as string;
		// 'NONE' means open-ended (no end date).
		const end = (formData.get('end') as string) || 'NONE';
		const bannerIndex = (formData.get('banner_index') as string) ?? '1';
		const banner = formData.get('banner') as File;

		if (!country || !uid || !displayName || !email || !slug || !name || !start || !banner) {
			throw error(400, 'Missing required fields');
		}

		const endpoint =
			`${API_BASE}/catalog/create/${encodeURIComponent(country)}/${encodeURIComponent(uid)}` +
			`/${encodeURIComponent(displayName)}/${encodeURIComponent(email)}`;

		console.log('[Catalog Create Proxy] Endpoint:', endpoint, 'slug:', slug);

		const upstream = new FormData();
		upstream.append('slug', slug);
		upstream.append('name', name);
		upstream.append('start', start);
		upstream.append('end', end);
		upstream.append('banner_index', bannerIndex);
		upstream.append('banner', banner);

		const response = await fetch(endpoint, {
			method: 'POST',
			body: upstream
		});

		if (!response.ok) {
			const errorData = await response.json().catch(() => ({ detail: response.statusText }));
			throw error(response.status, errorData.detail || 'Create catalog failed');
		}

		return json(await response.json());
	} catch (err) {
		console.error('[Catalog Create Proxy] Error:', err);

		if (err && typeof err === 'object' && 'status' in err) {
			throw err;
		}

		throw error(500, err instanceof Error ? err.message : 'Internal server error');
	}
};