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'use strict';
/**
* email-report.js — 周报邮件发送模块
*
* 将 Markdown 格式的周报转换为 HTML 邮件，发送给领导层。
*
* 所需环境变量：
* SMTP_HOST — SMTP 服务器地址（如 smtp.exmail.qq.com）
* SMTP_PORT — SMTP 端口（默认 465）
* SMTP_USER — 发件人邮箱
* SMTP_PASS — 邮箱密码或授权码
* WEEKLY_EMAIL_TO — 收件人列表，逗号分隔（如 boss@company.com,cto@company.com）
* 未配置时回退到 EMAIL_TO
*/
const nodemailer = require('nodemailer');
// ── Markdown → HTML 转换（内联实现，无额外依赖）────────────────────────────────
function markdownToHtml(md) {
const lines = md.split('\n');
const htmlLines = [];
let inBlockquote = false;
for (let i = 0; i < lines.length; i++) {
let line = lines[i];
// 水平分割线
if (/^---+$/.test(line.trim())) {
if (inBlockquote) { htmlLines.push('</blockquote>'); inBlockquote = false; }
htmlLines.push('<hr style="border:none;border-top:1px solid #e0e0e0;margin:16px 0;">');
continue;
}
// 引用块 > 开头
if (line.startsWith('> ')) {
if (!inBlockquote) {
htmlLines.push('<blockquote style="margin:4px 0 4px 8px;padding:6px 12px;border-left:3px solid #00A7E1;background:#f0f9ff;color:#555;font-size:13px;">');
inBlockquote = true;
}
line = inlineFormat(line.slice(2));
htmlLines.push(`<div>${line}</div>`);
continue;
} else if (inBlockquote) {
htmlLines.push('</blockquote>');
inBlockquote = false;
}
// 空行
if (line.trim() === '') {
htmlLines.push('<div style="height:8px;"></div>');
continue;
}
// 行内格式处理
line = inlineFormat(line);
htmlLines.push(`<div style="margin:3px 0;line-height:1.7;">${line}</div>`);
}
if (inBlockquote) htmlLines.push('</blockquote>');
return htmlLines.join('\n');
}
function inlineFormat(text) {
// **粗体**
text = text.replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>');
// `代码`
text = text.replace(/`([^`]+)`/g, '<code style="background:#f4f4f4;padding:1px 4px;border-radius:3px;font-size:12px;color:#c7254e;">$1</code>');
// [链接](url)
text = text.replace(/\[([^\]]+)\]\(([^)]+)\)/g, '<a href="$2" style="color:#00A7E1;text-decoration:none;">$1</a>');
// • 转义为可见符号
text = text.replace(/^(•\s*)/, '<span style="color:#00A7E1;">•</span> ');
return text;
}
// ── 生成完整 HTML 邮件 ────────────────────────────────────────────────────────
function buildEmailHtml(reportContent, dateRange) {
const body = markdownToHtml(reportContent);
return `<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>Web3Watch HK 行业周报</title>
</head>
<body style="margin:0;padding:0;background:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;">
<table width="100%" cellpadding="0" cellspacing="0" style="background:#f5f5f5;padding:24px 0;">
<tr><td align="center">
<table width="680" cellpadding="0" cellspacing="0" style="background:#ffffff;border-radius:8px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,0.08);">
<!-- Header -->
<tr>
<td style="background:#00A7E1;padding:24px 32px;">
<div style="color:#ffffff;font-size:20px;font-weight:700;letter-spacing:0.5px;">
Web3Watch HK 行业周报
</div>
<div style="color:rgba(255,255,255,0.8);font-size:13px;margin-top:6px;">
${dateRange} · 自动生成
</div>
</td>
</tr>
<!-- Body -->
<tr>
<td style="padding:28px 32px;color:#333;font-size:14px;line-height:1.8;">
${body}
</td>
</tr>
<!-- Footer -->
<tr>
<td style="background:#fafafa;border-top:1px solid #eee;padding:16px 32px;">
<div style="color:#999;font-size:12px;">
本邮件由 Web3Watch HK 自动发送 · 每周五 18:00 · 如需调整请联系 ZHAO
</div>
</td>
</tr>
</table>
</td></tr>
</table>
</body>
</html>`;
}
// ── 主入口 ────────────────────────────────────────────────────────────────────
/**
* 发送周报邮件给领导层
* @param {string} reportContent - 周报 Markdown 内容
* @param {string} startDate - 周报起始日期（如 "03/17"）
* @param {string} endDate - 周报结束日期（如 "03/21"）
*/
async function sendWeeklyReportEmail(reportContent, startDate, endDate) {
const smtpHost = process.env.SMTP_HOST;
const smtpUser = process.env.SMTP_USER;
const smtpPass = process.env.SMTP_PASS;
const smtpPort = parseInt(process.env.SMTP_PORT || '465', 10);
const recipients = (process.env.WEEKLY_EMAIL_TO || process.env.EMAIL_TO || '').trim();
const cc = (process.env.WEEKLY_EMAIL_CC || '').trim() || undefined;
if (!smtpHost || !smtpUser || !smtpPass) {
console.log('[Email] SMTP not configured, skipping weekly email.');
return false;
}
if (!recipients) {
console.warn('[Email] No recipients configured (WEEKLY_EMAIL_TO / EMAIL_TO), skipping.');
return false;
}
const dateRange = `${startDate} ~ ${endDate}`;
const subject = `Web3Watch HK 行业周报 | ${dateRange}`;
const html = buildEmailHtml(reportContent, dateRange);
const transporter = nodemailer.createTransport({
host: smtpHost,
port: smtpPort,
secure: smtpPort === 465,
auth: { user: smtpUser, pass: smtpPass },
});
try {
const info = await transporter.sendMail({
from: `"Web3Watch HK" <${smtpUser}>`,
to: recipients,
cc,
subject,
text: reportContent,
html,
});
console.log(`[Email] Weekly report sent → ${recipients}${cc ? ` CC: ${cc}` : ''} (messageId: ${info.messageId})`);
return true;
} catch (err) {
console.error('[Email] Failed to send weekly report:', err.message);
return false;
}
}
// ── 人工周报邮件（自定义标题 + 结论 + 图片）─────────────────────────────────────
/**
* 构建人工周报 HTML 邮件正文
* @param {string} summary - 本周结论/正文文字（支持空行分段、**粗体**标记）
* @param {string[]} imagePaths - 图片路径数组（按顺序内嵌），可为空数组
* @param {string} dateRange - 周期字符串，如 "0327 ~ 0409"，用于落款日期
* @param {string} [logoSrc] - Logo 的 src（CID 引用如 "cid:logo"，或 base64 data URI，可选）
*/
function buildManualEmailHtml(summary, imagePaths, dateRange, logoSrc) {
const paragraphs = summary.split('\n');
const summaryHtml = paragraphs.map(line => {
const trimmed = line.trim();
if (!trimmed) return '<div style="height:12px;"></div>';
const formatted = trimmed.replace(/\*\*(.+?)\*\*/g, '<strong style="color:#0d1b2a;">$1</strong>');
return `<div style="margin:5px 0;line-height:1.95;color:#374151;font-size:14px;">${formatted}</div>`;
}).join('\n');
const imageSection = imagePaths.length > 0
? imagePaths.map((_, i) =>
`<tr><td style="padding:0 36px ${i === imagePaths.length - 1 ? '32' : '16'}px;font-size:0;line-height:0;">
<img src="cid:weekly_report_image_${i}" alt="行业动态图表 ${i + 1}"
style="width:100%;max-width:588px;display:block;border-radius:3px;border:1px solid #e5e7eb;">
</td></tr>`
).join('\n')
: '';
const today = new Date().toLocaleDateString('zh-CN', {
timeZone: 'Asia/Shanghai', year: 'numeric', month: 'long', day: 'numeric',
});
const logoHtml = logoSrc
? `<img src="${logoSrc}" alt="HighBlock" width="36" height="36" style="display:inline-block;vertical-align:middle;border-radius:4px;margin-right:12px;">`
: '';
return `<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
</head>
<body style="margin:0;padding:0;background:#eef0f3;font-family:-apple-system,BlinkMacSystemFont,'Helvetica Neue','PingFang SC','Microsoft YaHei',sans-serif;">
<table width="100%" cellpadding="0" cellspacing="0" style="background:#eef0f3;padding:32px 0;">
<tr><td align="center">
<table width="660" cellpadding="0" cellspacing="0" style="background:#ffffff;">
<!-- ── Header ── -->
<tr>
<td style="background:#1e3269;padding:36px 40px 28px;">
<table width="100%" cellpadding="0" cellspacing="0">
<tr>
<td style="vertical-align:middle;">
${logoHtml}<span style="color:#c9a55a;font-size:11px;letter-spacing:0.18em;text-transform:uppercase;font-weight:700;vertical-align:middle;">HIGHBLOCK</span>
</td>
<td align="right" style="color:rgba(255,255,255,0.4);font-size:10px;letter-spacing:0.08em;">
INTERNAL REFERENCE · ${dateRange}
</td>
</tr>
</table>
<div style="color:#ffffff;font-size:23px;font-weight:700;margin-top:16px;line-height:1.35;letter-spacing:0.01em;">
行业研究周报
</div>
<div style="background:#c9a55a;height:3px;width:48px;margin-top:18px;border-radius:2px;"></div>
</td>
</tr>
<!-- ── Meta bar ── -->
<tr>
<td style="background:#f8f7f4;border-bottom:2px solid #1e3269;padding:10px 40px;">
<table width="100%" cellpadding="0" cellspacing="0">
<tr>
<td style="color:#6b7280;font-size:11px;letter-spacing:0.06em;">
产品部行研组 · ${dateRange}
</td>
<td align="right" style="color:#9ca3af;font-size:11px;">
${today}
</td>
</tr>
</table>
</td>
</tr>
<!-- ── Greeting ── -->
<tr>
<td style="padding:32px 40px 0;color:#374151;font-size:14px;line-height:1.9;">
<div style="margin-bottom:8px;">尊敬的各位领导，</div>
<div style="color:#6b7280;font-size:13px;">以下为本周香港 Web3 行业核心动态，供参阅。</div>
</td>
</tr>
<!-- ── Divider ── -->
<tr><td style="padding:20px 40px 0;">
<div style="border-top:1px solid #e5e7eb;"></div>
</td></tr>
<!-- ── Summary ── -->
<tr>
<td style="padding:24px 40px;">
<div style="font-size:10px;letter-spacing:0.15em;text-transform:uppercase;color:#9ca3af;font-weight:600;margin-bottom:16px;">
本周研判
</div>
<div style="border-left:3px solid #c9a55a;padding:16px 20px;background:#f9fafb;border-radius:0 4px 4px 0;">
${summaryHtml}
</div>
</td>
</tr>
<!-- ── Images ── -->
${imagePaths.length > 0 ? `
<tr><td style="padding:0 40px 16px;">
<div style="font-size:10px;letter-spacing:0.15em;text-transform:uppercase;color:#9ca3af;font-weight:600;margin-bottom:16px;">
行业动态图表
</div>
</td></tr>` : ''}
${imageSection}
<!-- ── Doc link ── -->
<tr>
<td style="padding:0 40px 32px;">
<table width="100%" cellpadding="0" cellspacing="0" style="background:#1e3269;border-radius:4px;">
<tr>
<td style="padding:14px 20px;color:rgba(255,255,255,0.65);font-size:12px;letter-spacing:0.05em;">
完整周报文档
</td>
<td align="right" style="padding:14px 20px;">
<a href="https://doc.weixin.qq.com/doc/w3_ARMAsQbTANACNGOlT0neMRK64hCk5?scode=ANEAUgd7AFo0Aba4VCARMAsQbTANA"
style="color:#c9a55a;text-decoration:none;font-size:12px;font-weight:700;letter-spacing:0.05em;">
点击查看 →
</a>
</td>
</tr>
</table>
</td>
</tr>
<!-- ── Divider ── -->
<tr><td style="padding:0 40px;">
<div style="border-top:1px solid #e5e7eb;"></div>
</td></tr>
<!-- ── Signature ── -->
<tr>
<td style="padding:24px 40px 32px;">
<table width="100%" cellpadding="0" cellspacing="0">
<tr>
<td style="color:#6b7280;font-size:13px;line-height:1.8;">
如有疑问，欢迎随时沟通。
</td>
<td align="right">
<div style="border-left:3px solid #c9a55a;padding:8px 0 8px 16px;text-align:left;display:inline-block;">
<div style="font-size:13px;font-weight:700;color:#1e3269;letter-spacing:0.02em;">产品部行研组</div>
<div style="font-size:11px;color:#9ca3af;margin-top:3px;">HighBlock Research</div>
</div>
</td>
</tr>
</table>
</td>
</tr>
<!-- ── Footer ── -->
<tr>
<td style="background:#1e3269;padding:14px 40px;">
<table width="100%" cellpadding="0" cellspacing="0">
<tr>
<td style="color:rgba(255,255,255,0.3);font-size:10px;letter-spacing:0.08em;">
HIGHBLOCK · 产品部行研组
</td>
<td align="right" style="color:rgba(255,255,255,0.2);font-size:10px;">
Powered by Web3Watch HK
</td>
</tr>
</table>
</td>
</tr>
</table>
</td></tr>
</table>
</body>
</html>`;
}
/**
* 发送人工周报邮件（自定义标题 + 结论 + 多图内嵌，无 PDF 附件）
* @param {string} subject - 邮件标题
* @param {string} summary - 本周结论文字
* @param {string} dateRange - 周期字符串，如 "0327 ~ 0409"
* @param {string|string[]} imagePaths - 图片路径（单张兼容旧调用，或数组）
*/
async function sendManualWeeklyEmail(subject, summary, dateRange, imagePaths) {
const fs = require('fs');
const path = require('path');
const smtpHost = process.env.SMTP_HOST;
const smtpUser = process.env.SMTP_USER;
const smtpPass = process.env.SMTP_PASS;
const smtpPort = parseInt(process.env.SMTP_PORT || '465', 10);
const recipients = (process.env.WEEKLY_EMAIL_TO || process.env.EMAIL_TO || '').trim();
const cc = (process.env.WEEKLY_EMAIL_CC || '').trim() || undefined;
if (!smtpHost || !smtpUser || !smtpPass) {
console.log('[Email] SMTP not configured, skipping.');
return false;
}
if (!recipients) {
console.warn('[Email] No recipients configured, skipping.');
return false;
}
// 兼容旧的单路径调用
const paths = Array.isArray(imagePaths)
? imagePaths.filter(p => p && fs.existsSync(p))
: (imagePaths && fs.existsSync(imagePaths) ? [imagePaths] : []);
if (paths.length === 0) console.warn('[Email] No images found, sending without inline images.');
// Logo（assets/logo.jpg），存在则以 CID 内嵌进 header
const logoPath = path.join(__dirname, 'assets', 'logo.jpg');
const hasLogo = fs.existsSync(logoPath);
if (!hasLogo) console.warn('[Email] assets/logo.jpg not found, header will render without logo.');
const html = buildManualEmailHtml(
summary,
paths,
dateRange,
hasLogo ? 'cid:highblock_logo' : null,
);
const attachments = paths.map((p, i) => ({
filename: `weekly-report-${i + 1}${path.extname(p)}`,
path: p,
cid: `weekly_report_image_${i}`,
}));
if (hasLogo) {
attachments.push({
filename: 'logo.jpg',
path: logoPath,
cid: 'highblock_logo',
});
}
const transporter = nodemailer.createTransport({
host: smtpHost,
port: smtpPort,
secure: smtpPort === 465,
auth: { user: smtpUser, pass: smtpPass },
});
try {
const info = await transporter.sendMail({
from: `"Web3Watch HK" <${smtpUser}>`,
to: recipients,
cc,
subject,
text: summary,
html,
attachments,
});
console.log(`[Email] Manual weekly email sent → ${recipients}${cc ? ` CC: ${cc}` : ''} (${paths.length} image(s), messageId: ${info.messageId})`);
return true;
} catch (err) {
console.error('[Email] Failed to send manual weekly email:', err.message);
return false;
}
}
module.exports = { sendWeeklyReportEmail, sendManualWeeklyEmail, buildManualEmailHtml };