Initial commit

2026-03-20 21:47:30 +08:00
commit 2eab960303
83 changed files with 51694 additions and 0 deletions
--- a/backend/app/services/email_notification_service.py
+++ b/backend/app/services/email_notification_service.py
@ -0,0 +1,65 @@
+from __future__ import annotations
+
+import smtplib
+import ssl
+from email.header import Header
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+from html import escape
+
+
+class EmailNotificationService:
+    def send(
+        self,
+        *,
+        smtp_host: str,
+        smtp_port: int,
+        smtp_username: str,
+        smtp_password: str,
+        sender_email: str,
+        recipients: list[str],
+        subject: str,
+        text_body: str,
+    ) -> None:
+        if not smtp_host:
+            raise ValueError("smtp_host 未配置")
+        if not smtp_username:
+            raise ValueError("smtp_username 未配置")
+        if not smtp_password:
+            raise ValueError("smtp_password 未配置")
+        if not sender_email:
+            raise ValueError("sender_email 未配置")
+        if not recipients:
+            raise ValueError("recipients 未配置")
+
+        message = MIMEMultipart("alternative")
+        message["From"] = sender_email
+        message["To"] = ", ".join(recipients)
+        message["Subject"] = str(Header(subject, "utf-8"))
+        html_body = (
+            "<html><head><meta charset=\"utf-8\"></head>"
+            "<body style=\"font-family:Microsoft YaHei, PingFang SC, Arial, sans-serif; line-height:1.7; font-size:14px; color:#111;\">"
+            f"{escape(text_body).replace(chr(10), '<br>')}"
+            "</body></html>"
+        )
+        message.attach(MIMEText(text_body, "plain", "utf-8"))
+        message.attach(MIMEText(html_body, "html", "utf-8"))
+
+        context = ssl.create_default_context()
+        port = int(smtp_port)
+
+        if port == 465:
+            with smtplib.SMTP_SSL(smtp_host, port, timeout=20, context=context) as server:
+                server.login(smtp_username, smtp_password)
+                server.sendmail(sender_email, recipients, message.as_bytes())
+            return
+
+        with smtplib.SMTP(smtp_host, port, timeout=20) as server:
+            server.ehlo()
+            server.starttls(context=context)
+            server.ehlo()
+            server.login(smtp_username, smtp_password)
+            server.sendmail(sender_email, recipients, message.as_bytes())
+
+
+email_notification_service = EmailNotificationService()