68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
import smtplib
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import logging
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from email.mime.text import MIMEText
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from email.mime.multipart import MIMEMultipart
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from email.mime.base import MIMEBase
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from email import encoders
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from pathlib import Path
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from src.config import EmailAccount
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from src.retry import retry
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logger = logging.getLogger(__name__)
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@retry()
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def send_reply(account: EmailAccount, to_addr: str, subject: str, body: str,
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attachments: list[tuple[str, str]] | None = None):
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"""发送回复邮件，支持附件。
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Args:
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attachments: [(本地文件路径, mime_type), ...] 列表
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"""
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if not account.smtp:
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raise RuntimeError(f"账号 {account.username} 未配置 SMTP")
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s = account.smtp
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logger.info("SMTP 连接: %s:%d (ssl=%s)", s.server, s.port, s.ssl)
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if s.ssl:
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conn = smtplib.SMTP_SSL(s.server, s.port, timeout=15)
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else:
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conn = smtplib.SMTP(s.server, s.port, timeout=15)
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if s.starttls:
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conn.starttls()
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conn.login(account.username, account.password)
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logger.info("SMTP 登录成功")
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reply_subject = subject if subject.lower().startswith("re:") else f"Re: {subject}"
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logger.info("SMTP 发送: to=%s subject=%s body=%d 字符 attachments=%d",
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to_addr, reply_subject, len(body), len(attachments or []))
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if attachments:
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msg = MIMEMultipart()
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msg.attach(MIMEText(body, "plain", "utf-8"))
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for filepath, mime_type in attachments:
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p = Path(filepath)
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if not p.exists():
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logger.warning(" 附件不存在: %s", filepath)
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continue
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maintype, subtype = mime_type.split("/", 1)
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with open(p, "rb") as f:
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part = MIMEBase(maintype, subtype)
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part.set_payload(f.read())
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encoders.encode_base64(part)
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part.add_header("Content-Disposition", "attachment", filename=p.name)
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msg.attach(part)
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logger.info(" 添加附件: %s (%s, %d bytes)", p.name, mime_type, p.stat().st_size)
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else:
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msg = MIMEMultipart("alternative")
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msg.attach(MIMEText(body, "plain", "utf-8"))
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msg["From"] = account.username
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msg["To"] = to_addr
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msg["Subject"] = reply_subject
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conn.sendmail(account.username, [to_addr], msg.as_string())
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conn.quit()
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logger.info("SMTP 发送完成")
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