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

const API_BASE = env.PUBLIC_POST_IMAGE;

// Edit a web-managed main-page video: change date range and/or replace the .mp4.
export const POST: RequestHandler = async ({ request }) => {
	try {
		const formData = await request.formData();

		const slug = formData.get('slug') as string;
		const uid = formData.get('uid') as string;
		const displayName = formData.get('displayName') as string;
		const email = formData.get('email') as string;
		const country = (formData.get('country') as string) || 'tha';
		const start = formData.get('start') as string;
		const end = (formData.get('end') as string) || 'NONE';
		const name = formData.get('name') as string | null;
		const brewingDuration = formData.get('brewing_duration') as string | null;
		const video = formData.get('video') as File | null;
		const brewingVideo = formData.get('brewing_video') as File | null;
		const brewingTxt = formData.get('brewing_txt') as File | null;
		const brewingTxtEn = formData.get('brewing_txt_en') as File | null;

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

		const endpoint =
			`${API_BASE}/video/mainpage/update/${encodeURIComponent(slug)}/${encodeURIComponent(uid)}` +
			`/${encodeURIComponent(displayName)}/${encodeURIComponent(email)}`;

		const upstream = new FormData();
		upstream.append('country', country);
		upstream.append('start', start);
		upstream.append('end', end);
		if (name) upstream.append('name', name);
		if (brewingDuration) upstream.append('brewing_duration', brewingDuration);
		if (video) upstream.append('video', video);
		if (brewingVideo) upstream.append('brewing_video', brewingVideo);
		if (brewingTxt) upstream.append('brewing_txt', brewingTxt);
		if (brewingTxtEn) upstream.append('brewing_txt_en', brewingTxtEn);

		const response = await fetch(endpoint, { method: 'POST', body: upstream });
		if (!response.ok) {
			const e = await response.json().catch(() => ({ detail: response.statusText }));
			throw error(response.status, e.detail || 'Update main-page video failed');
		}
		return json(await response.json());
	} catch (err) {
		console.error('[Video MainPage Update Proxy] Error:', err);
		if (err && typeof err === 'object' && 'status' in err) throw err;
		throw error(500, err instanceof Error ? err.message : 'Internal server error');
	}
};