const nodemailer = require('nodemailer');
const config = require('./config');
const db = require('./database');

module.exports = {
    init() {
        if (!this.transporter)
            this.transporter = nodemailer.createTransport(config.smtp);
    },

    async send(options) {
        options.from = `${config.app.senderName} <${config.app.senderEmail}>`;

        if (process.env.NODE_ENV !== 'production') {
            const notProductionError = {message: 'This not production, this email not sended'};
            await this.mailLog(options, notProductionError);
            if (!config.smtp.auth.user)
                return Promise.resolve(true);

            options.to = config.app.senderEmail;
        }

        let error;
        return this.transporter.sendMail(options).catch(err => {
            error = err;

            throw err;
        }).finally(async() => {
            await this.mailLog(options, error);
        });
    },

    async mailLog(options, error) {
        const attachments = [];
        if (options.attachments) {
            for (let attachment of options.attachments) {
                const fileName = attachment.filename;
                const filePath = attachment.path;
                if (fileName.includes('.png')) continue;

                if (fileName || filePath)
                    attachments.push(filePath ? filePath : fileName);
            }
        }

        const fileNames = attachments.join(',\n');

        await db.rawSql(`
            INSERT INTO vn.mail (receiver, replyTo, sent, subject, body, attachment, status)
                VALUES (?, ?, 1, ?, ?, ?, ?)`, [
            options.to,
            options.replyTo,
            options.subject,
            options.text || options.html,
            fileNames,
            error && error.message || 'Sent'
        ]);
    }

};