/*
 * Copyright (C) 2026 Fluxer Contributors
 *
 * This file is part of Fluxer.
 *
 * Fluxer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Fluxer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
 */

import type {EmailMessage, IEmailProvider} from '@fluxer/email/src/EmailProviderTypes';
import {createLogger} from '@fluxer/logger/src/Logger';
import nodemailer from 'nodemailer';

const logger = createLogger('@fluxer/email/src/SmtpEmailProvider');

export interface SmtpEmailConfig {
	host: string;
	port: number;
	username: string;
	password: string;
	secure?: boolean;
	connectionTimeoutMs?: number;
	greetingTimeoutMs?: number;
	socketTimeoutMs?: number;
}

export class SmtpEmailProvider implements IEmailProvider {
	private readonly transporter: nodemailer.Transporter;

	constructor(config: SmtpEmailConfig) {
		this.transporter = nodemailer.createTransport({
			host: config.host,
			port: config.port,
			secure: config.secure ?? true,
			auth: {
				user: config.username,
				pass: config.password,
			},
			connectionTimeout: config.connectionTimeoutMs,
			greetingTimeout: config.greetingTimeoutMs,
			socketTimeout: config.socketTimeoutMs,
		});
	}

	async sendEmail(message: EmailMessage): Promise<boolean> {
		try {
			await this.transporter.sendMail({
				to: message.to,
				from: `${message.from.name} <${message.from.email}>`,
				subject: message.subject,
				text: message.text,
			});
			logger.debug({to: message.to}, 'Email sent via SMTP');
			return true;
		} catch (error) {
			logger.error({error}, 'SMTP send failed');
			return false;
		}
	}
}