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import { EmailMessage } from 'cloudflare:email';
import { createMimeMessage } from 'mimetext';

export default {
	async email(message, env, ctx) {
		const msg = createMimeMessage();
		const messageId = message.headers.get('Message-ID');
		const messageSubject = message.headers.get('Subject');

		console.log(messageSubject);

		if (!messageId) {
			return;
		}
		if (!messageSubject) {
			return;
		}

		const backendResponse = await fetch('https://localhost:8080/test', {
			method: 'POST',
			body: JSON.stringify({ userProblem: messageSubject }),
		});
		const parsedResponse = await backendResponse.json();

		msg.setHeader('In-Reply-To', messageId);
		msg.setSender({ name: 'Localhost Technologies', addr: 'local@host.cc' });
		msg.setRecipient(message.from);
		msg.setSubject('Your Localhost Response!');
		msg.addMessage({
			contentType: 'text/plain',
			data: parsedResponse.reason,
		});

		const replyMessage = new EmailMessage('local@host.cc', message.from, msg.asRaw());

		await message.reply(replyMessage);
		await message.forward('forward@test.cc');
	},
} satisfies ExportedHandler<Env>;