Initial commit: WpywMail 自建邮件系统：.NET 8 原生 SMTP/IMAP 服务端（DKIM 签名、SPF/DKIM/DMARC 入站校验、SQLite 存储、完整账号体系）、Node 服务端、WinUI 3 客户端与 Web 前端

2026-09-19 11:19:40 +08:00
commit b8814a7615
84 changed files with 21197 additions and 0 deletions
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+import fs from 'node:fs/promises'
+import path from 'node:path'
+import crypto from 'node:crypto'
+import { fileURLToPath } from 'node:url'
+
+const serverDir = path.dirname(fileURLToPath(import.meta.url))
+const dataDir = process.env.MAIL_DATA_DIR || path.join(serverDir, 'data')
+const messagesFile = path.join(dataDir, 'messages.json')
+
+let writeQueue = Promise.resolve()
+
+async function ensureStore() {
+  await fs.mkdir(dataDir, { recursive: true })
+  try {
+    await fs.access(messagesFile)
+  } catch {
+    await fs.writeFile(messagesFile, '[]', 'utf8')
+  }
+}
+
+async function readMessages() {
+  await ensureStore()
+  const raw = await fs.readFile(messagesFile, 'utf8')
+  try {
+    return JSON.parse(raw)
+  } catch {
+    return []
+  }
+}
+
+function queueWrite(messages) {
+  writeQueue = writeQueue.then(async () => {
+    const tmp = `${messagesFile}.${process.pid}.tmp`
+    await fs.writeFile(tmp, JSON.stringify(messages, null, 2), 'utf8')
+    await fs.rename(tmp, messagesFile)
+  })
+  return writeQueue
+}
+
+export async function initStore() {
+  await ensureStore()
+  if (process.env.SEED_DEMO === 'true') {
+    const messages = await readMessages()
+    if (!messages.length) {
+      const now = Date.now()
+      await queueWrite([
+        makeMessage({
+          folder: 'inbox',
+          from: 'Cloudflare <[email protected]>',
+          to: process.env.MAIL_USER || '[email protected]',
+          subject: '你的 wpyw.site 邮件服务已准备就绪',
+          text: '这是本地演示邮件。正式使用时，来自公网的 SMTP 邮件会自动进入这里。',
+          date: new Date(now - 1000 * 60 * 12).toISOString(),
+          unread: true,
+        }),
+        makeMessage({
+          folder: 'inbox',
+          from: '系统管理员 <[email protected]>',
+          to: process.env.MAIL_USER || '[email protected]',
+          subject: '欢迎使用 wpyw.mail',
+          text: '你可以从左侧开始管理收件箱，或点击右上角写信。',
+          date: new Date(now - 1000 * 60 * 60 * 4).toISOString(),
+          unread: false,
+        }),
+        makeMessage({
+          folder: 'sent',
+          from: process.env.MAIL_USER || '[email protected]',
+          to: '[email protected]',
+          subject: '测试发信',
+          text: 'SMTP 提交链路测试。',
+          date: new Date(now - 1000 * 60 * 60 * 22).toISOString(),
+          unread: false,
+        }),
+      ])
+    }
+  }
+}
+
+export function makeMessage(input) {
+  const text = input.text || ''
+  return {
+    id: input.id || crypto.randomUUID(),
+    folder: input.folder || 'inbox',
+    from: input.from || '',
+    to: input.to || '',
+    subject: input.subject || '(无主题)',
+    text,
+    html: input.html || '',
+    preview: input.preview || text.replace(/\s+/g, ' ').trim().slice(0, 140),
+    date: input.date || new Date().toISOString(),
+    unread: input.unread ?? true,
+    attachments: input.attachments || [],
+    messageId: input.messageId || '',
+  }
+}
+
+export async function listMessages(folder = 'inbox', query = '') {
+  const messages = await readMessages()
+  const normalized = query.trim().toLowerCase()
+  return messages
+    .filter((message) => message.folder === folder)
+    .filter((message) => {
+      if (!normalized) return true
+      return [message.from, message.to, message.subject, message.text]
+        .join(' ')
+        .toLowerCase()
+        .includes(normalized)
+    })
+    .sort((a, b) => new Date(b.date) - new Date(a.date))
+    .map(({ text, html, ...summary }) => summary)
+}
+
+export async function getMessage(id) {
+  const messages = await readMessages()
+  return messages.find((message) => message.id === id) || null
+}
+
+export async function saveMessage(input) {
+  const messages = await readMessages()
+  const message = makeMessage(input)
+  messages.push(message)
+  await queueWrite(messages)
+  return message
+}
+
+export async function markRead(id) {
+  const messages = await readMessages()
+  const index = messages.findIndex((message) => message.id === id)
+  if (index < 0) return null
+  messages[index].unread = false
+  await queueWrite(messages)
+  return messages[index]
+}
+
+export async function mailboxStats() {
+  const messages = await readMessages()
+  return {
+    inbox: messages.filter((message) => message.folder === 'inbox').length,
+    unread: messages.filter((message) => message.folder === 'inbox' && message.unread).length,
+    sent: messages.filter((message) => message.folder === 'sent').length,
+    drafts: messages.filter((message) => message.folder === 'drafts').length,
+  }
+}