57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
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# app/services/mailer.py
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import smtplib
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import ssl
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from email.message import EmailMessage
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from app.core.config import get_app_settings
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def send_email(to_email: str, subject: str, html: str) -> None:
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"""
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发送邮件：
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- 端口为 465 时使用 SSL 直连（SMTP_SSL）
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- 其他端口：按配置 smtp_tls 决定是否 STARTTLS
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"""
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s = get_app_settings()
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host = s.smtp_host
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port = int(s.smtp_port)
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use_starttls = bool(s.smtp_tls)
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# SecretStr / Optional 兼容处理
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smtp_user = s.smtp_user.get_secret_value() if getattr(s, "smtp_user", None) else None
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smtp_pass = s.smtp_password.get_secret_value() if getattr(s, "smtp_password", None) else None
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msg = EmailMessage()
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msg["From"] = str(s.mail_from) # EmailStr -> str
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msg["To"] = to_email
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msg["Subject"] = subject
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# 纯文本 + HTML（多部件）
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msg.set_content("Your mail client does not support HTML.")
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msg.add_alternative(html, subtype="html")
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ctx = ssl.create_default_context()
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# === 建立连接 ===
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if port == 465:
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server = smtplib.SMTP_SSL(host, port, context=ctx, timeout=20)
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else:
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server = smtplib.SMTP(host, port, timeout=20)
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server.ehlo()
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if use_starttls:
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server.starttls(context=ctx)
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server.ehlo()
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try:
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# 如配置了用户名/密码，则登录
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if smtp_user and smtp_pass:
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server.login(smtp_user, smtp_pass)
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server.send_message(msg)
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finally:
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try:
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server.quit()
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except Exception:
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# 连接已断开也无妨，忽略
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pass
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