72 lines
2.6 KiB
JavaScript
72 lines
2.6 KiB
JavaScript
const nodemailer = require('nodemailer');
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const { getPool, query, getRow, getConfig } = require('./db');
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async function getSmtpConfig() {
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try {
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const rows = await query("SELECT k, v FROM settings WHERE k LIKE 'smtp_%'");
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const cfg = {};
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for (const r of rows) cfg[r.k] = r.v;
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return {
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host: cfg.smtp_host || '',
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port: parseInt(cfg.smtp_port) || 587,
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secure: cfg.smtp_secure === '1',
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user: cfg.smtp_user || '',
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pass: cfg.smtp_pass || '',
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from: cfg.smtp_from || 'noreply@example.com',
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};
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} catch { return { host: '', port: 587, secure: false, user: '', pass: '', from: '' }; }
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}
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async function getSiteName() {
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const row = await getRow("SELECT v FROM settings WHERE k = 'site_name'");
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return row ? row.v : 'MC举报系统';
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}
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async function getSiteUrl() {
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const row = await getRow("SELECT v FROM settings WHERE k = 'site_url'");
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return row ? row.v : 'http://localhost:3100';
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}
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async function getTemplate(code) {
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return getRow('SELECT * FROM email_templates WHERE code = ?', [code]);
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}
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function renderTemplate(template, vars) {
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let { subject, body } = template;
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for (const [k, v] of Object.entries(vars)) {
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const re = new RegExp(`\\{\\{${k}\\}\\}`, 'g');
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const val = String(v ?? '');
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subject = subject.replace(re, () => val);
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body = body.replace(re, () => val);
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}
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return { subject, body };
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}
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let _transporter = null;
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let _transporterKey = '';
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function getTransporter(cfg) {
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const key = `${cfg.host}:${cfg.port}:${cfg.user}`;
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if (_transporter && _transporterKey === key) return _transporter;
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_transporterKey = key;
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_transporter = nodemailer.createTransport({ host: cfg.host, port: cfg.port, secure: cfg.secure, auth: { user: cfg.user, pass: cfg.pass } });
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return _transporter;
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}
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async function sendEmail(to, templateCode, vars) {
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try {
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const cfg = await getSmtpConfig();
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if (!cfg.host || !cfg.user) { console.log('[Mailer] SMTP未配置'); return false; }
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const template = await getTemplate(templateCode);
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if (!template) { console.log('[Mailer] 模板不存在:', templateCode); return false; }
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const siteName = await getSiteName();
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const allVars = { ...vars, site_name: siteName, site_url: await getSiteUrl() };
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const { subject, body } = renderTemplate(template, allVars);
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const transporter = getTransporter(cfg);
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await transporter.sendMail({ from: `"${siteName}" <${cfg.from}>`, to, subject, html: body });
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return true;
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} catch (err) { console.error('[Mailer]', err.message); return false; }
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}
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module.exports = { sendEmail, renderTemplate, getTemplate, getSmtpConfig, getSiteName, getSiteUrl };
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