251 lines
9.9 KiB
Python
251 lines
9.9 KiB
Python
"""
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邮件通知服务
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使用 Python smtplib + email.mime 实现,支持 TLS/SSL SMTP 连接
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从环境变量或 Flask config 读取邮件配置
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"""
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import os
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import smtplib
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import ssl
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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.header import Header
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from typing import List, Union
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logger = logging.getLogger(__name__)
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def _get_config():
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"""
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读取邮件配置,优先从 Flask app config,回退到环境变量
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"""
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try:
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from flask import current_app
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return {
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'server': current_app.config.get('MAIL_SERVER', os.getenv('MAIL_SERVER')),
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'port': current_app.config.get('MAIL_PORT', int(os.getenv('MAIL_PORT', 587))),
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'username': current_app.config.get('MAIL_USERNAME', os.getenv('MAIL_USERNAME')),
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'password': current_app.config.get('MAIL_PASSWORD', os.getenv('MAIL_PASSWORD')),
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'sender': current_app.config.get('MAIL_DEFAULT_SENDER', os.getenv('MAIL_DEFAULT_SENDER')),
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'use_tls': current_app.config.get('MAIL_USE_TLS', os.getenv('MAIL_USE_TLS', 'true').lower() in ('true', '1', 'yes')),
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'use_ssl': current_app.config.get('MAIL_USE_SSL', os.getenv('MAIL_USE_SSL', 'false').lower() in ('true', '1', 'yes')),
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'enabled': current_app.config.get('MAIL_ENABLED', os.getenv('MAIL_ENABLED', 'false').lower() in ('true', '1', 'yes')),
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}
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except RuntimeError:
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# 不在 Flask 上下文时,直接读环境变量
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return {
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'server': os.getenv('MAIL_SERVER'),
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'port': int(os.getenv('MAIL_PORT', 587)),
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'username': os.getenv('MAIL_USERNAME'),
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'password': os.getenv('MAIL_PASSWORD'),
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'sender': os.getenv('MAIL_DEFAULT_SENDER'),
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'use_tls': os.getenv('MAIL_USE_TLS', 'true').lower() in ('true', '1', 'yes'),
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'use_ssl': os.getenv('MAIL_USE_SSL', 'false').lower() in ('true', '1', 'yes'),
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'enabled': os.getenv('MAIL_ENABLED', 'false').lower() in ('true', '1', 'yes'),
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}
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def send_email(to_email: Union[str, List[str]], subject: str, content: str):
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"""
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通用邮件发送函数
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Args:
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to_email: 收件人,单个邮箱字符串或列表
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subject: 邮件主题
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content: 邮件正文(纯文本)
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发送失败时打印日志,不抛出异常
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"""
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cfg = _get_config()
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print(f"[DEBUG send_email] cfg = {cfg}")
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# 发送总开关
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if not cfg.get('enabled'):
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print(f"[Email] 邮件功能已禁用 (MAIL_ENABLED=false),跳过发送: {subject}")
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logger.info(f"[Email] 邮件功能已禁用 (MAIL_ENABLED=false),跳过发送: {subject}")
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return
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# 配置完整性检查
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if not cfg.get('server') or not cfg.get('username') or not cfg.get('password'):
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print(f"[Email] 邮件配置不完整 server={cfg.get('server')} username={cfg.get('username')} password={'已设' if cfg.get('password') else '空'},跳过发送")
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logger.warning("[Email] 邮件配置不完整 (MAIL_SERVER/USERNAME/PASSWORD 缺失),跳过发送")
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return
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# 标准化收件人列表
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recipients = [to_email] if isinstance(to_email, str) else [r.strip() for r in to_email if r.strip()]
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if not recipients:
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print("[Email] 收件人地址为空,跳过发送")
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logger.warning("[Email] 收件人地址为空,跳过发送")
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return
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try:
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msg = MIMEMultipart()
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msg['From'] = cfg['sender']
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msg['To'] = ', '.join(recipients)
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msg['Subject'] = Header(subject, 'utf-8')
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msg.attach(MIMEText(content, 'plain', 'utf-8'))
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print(f"DEBUG: 准备向服务器提交发信请求,收件人: {recipients} 发件人: {cfg['username']}")
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if cfg.get('use_ssl'):
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context = ssl.create_default_context()
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with smtplib.SMTP_SSL(cfg['server'], cfg.get('port', 465), context=context) as server:
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server.login(cfg['username'], cfg['password'])
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server.sendmail(cfg['username'], recipients, msg.as_string())
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else:
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with smtplib.SMTP(cfg['server'], cfg.get('port', 587)) as server:
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if cfg.get('use_tls'):
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server.starttls(context=ssl.create_default_context())
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server.login(cfg['username'], cfg['password'])
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server.sendmail(cfg['username'], recipients, msg.as_string())
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logger.info(f"[Email] 发送成功 -> {recipients}: {subject}")
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except smtplib.SMTPAuthenticationError:
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print(f"!!! 邮件发送核心报错: SMTPAuthenticationError - 邮箱认证失败,请检查 MAIL_USERNAME / MAIL_PASSWORD(授权码)")
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logger.error("[Email] 邮箱认证失败,请检查 MAIL_USERNAME / MAIL_PASSWORD(授权码)")
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except smtplib.SMTPRecipientsRefused as e:
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print(f"!!! 邮件发送核心报错: SMTPRecipientsRefused - 收件人被服务器拒绝: {e}")
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logger.error(f"[Email] 收件人被服务器拒绝: {e}")
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except smtplib.SMTPException as e:
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print(f"!!! 邮件发送核心报错: SMTPException - {e}")
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logger.error(f"[Email] SMTP 异常: {e}")
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except Exception as e:
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import traceback
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traceback.print_exc()
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print(f"!!! 邮件发送核心报错: {type(e).__name__} - {e}")
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logger.error(f"[Email] 发送邮件时发生未知异常: {e}")
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def send_new_request_notify(to_emails: List[str], request_no: str,
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applicant_name: str = '', remark: str = '',
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items: list = None):
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"""
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通知审批人有新的出库申请单待审批(可附带物料清单)
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Args:
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to_emails: 审批人邮箱列表
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request_no: 审批单号
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applicant_name: 申请人姓名
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remark: 申请备注
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items: 物料明细列表(可选)
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"""
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print(f"[DEBUG send_new_request_notify] 入参 items={items}")
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print(f"[DEBUG send_new_request_notify] items 类型={type(items)}, 长度={len(items) if items else 0}")
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# 拼装物料表格
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rows = []
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rows.append("名称 | 规格 | 计划数量")
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rows.append("-" * 40)
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if items:
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for item in items:
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name = item.get('name', '-') or '-'
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spec = item.get('spec_model', '-') or '-'
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qty = item.get('quantity', '-') or '-'
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rows.append(f"{name} | {spec} | {qty}")
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else:
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rows.append("(无物料明细)")
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subject = f"【待审批】出库申请单 {request_no}"
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content = f"""您好,
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您有一笔新的出库审批申请待处理:
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申请单号:{request_no}
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申请人:{applicant_name or '未知'}
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备注说明:{remark or '无'}
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物料清单如下:
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{chr(10).join(rows)}
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请登录仓库管理系统进行审批。
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此邮件由系统自动发送,请勿回复。
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"""
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send_email(to_emails, subject, content)
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def send_approval_result_notify(to_emails: List[str], request_no: str,
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is_passed: bool, reject_reason: str = '',
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applicant_name: str = ''):
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"""
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通知审批结果
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Args:
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to_emails: 收件人邮箱列表
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request_no: 审批单号
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is_passed: 是否通过(通过时发给库管,驳回时发给申请人)
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reject_reason: 驳回原因(仅 is_passed=False 时使用)
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applicant_name: 申请人姓名(仅驳回通知时使用)
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"""
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if is_passed:
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# ★ 发给申请人:告知已通过,去领料
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subject = f"【已通过】出库申请单 {request_no}"
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content = f"""{"尊敬的 " + applicant_name + ",您好" if applicant_name else "您好"},
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您的出库申请单 {request_no} 已审批通过,请联系仓库管理员领取物料。
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请登录仓库管理系统查看详情。
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此邮件由系统自动发送,请勿回复。
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"""
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else:
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# ★ 发给申请人:告知被驳回
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subject = f"【已驳回】出库申请单 {request_no}"
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content = f"""{"尊敬的 " + applicant_name + ",您好" if applicant_name else "您好"},
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出库申请单 {request_no} 已被审批驳回。
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驳回原因:{reject_reason or '未填写'}
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请登录仓库管理系统查看详情,并根据驳回原因调整后重新提交申请。
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此邮件由系统自动发送,请勿回复。
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"""
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send_email(to_emails, subject, content)
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def send_warehouse_dispatch_notify(to_emails: List[str], request_no: str,
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applicant_name: str = '', items: list = None):
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"""
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通知库管备货出库(包含完整物料清单)
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Args:
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to_emails: 库管邮箱列表
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request_no: 审批单号
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applicant_name: 申请人姓名
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items: 物料明细列表,每个元素包含 name/spec_model/warehouse_location/quantity
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"""
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print(f"[DEBUG send_warehouse_dispatch_notify] 入参 items={items}")
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print(f"[DEBUG send_warehouse_dispatch_notify] items 类型={type(items)}, 长度={len(items) if items else 0}")
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rows = []
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rows.append("名称 | 规格 | 库位 | 计划数量")
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rows.append("-" * 50)
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if items:
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for item in items:
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name = item.get('name', '-') or '-'
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spec = item.get('spec_model', '-') or '-'
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loc = item.get('warehouse_location', '-') or '-'
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qty = item.get('quantity', '-') or '-'
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rows.append(f"{name} | {spec} | {loc} | {qty}")
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else:
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rows.append("(无物料明细)")
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subject = f"【待出库】出库申请单 {request_no} 已审批通过"
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content = f"""您好,
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出库申请单 {request_no} 已审批通过,请按以下清单准备备货:
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{chr(10).join(rows)}
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申请人:{applicant_name or '未知'}
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请登录仓库管理系统执行"按单出库"操作。
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此邮件由系统自动发送,请勿回复。
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"""
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send_email(to_emails, subject, content)
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print(f"DEBUG: 准备向服务器提交发信请求,收件人: {to_emails}")
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