Initial commit: stock analysis backend and prototype UI.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/notifier.py

@@ -0,0 +1,84 @@
+"""推送通知：邮件(SMTP) + Server酱 + 企业微信机器人 + PushPlus。
+
+任意渠道配置了凭证即启用；notify() 会向所有已配置渠道发送，返回各渠道结果。
+"""
+from __future__ import annotations
+
+import smtplib
+import ssl
+from email.mime.text import MIMEText
+from email.header import Header
+
+import requests
+
+import config
+
+
+def channels_status():
+    return {
+        "email": bool(config.SMTP_HOST and config.SMTP_USER and config.SMTP_TO),
+        "serverchan": bool(config.SERVERCHAN_KEY),
+        "wecom": bool(config.WECOM_WEBHOOK),
+        "pushplus": bool(config.PUSHPLUS_TOKEN),
+    }
+
+
+def any_enabled():
+    return any(channels_status().values())
+
+
+def _send_email(title, content):
+    msg = MIMEText(content, "plain", "utf-8")
+    msg["Subject"] = Header(title, "utf-8")
+    msg["From"] = config.SMTP_USER
+    tos = [x.strip() for x in config.SMTP_TO.split(",") if x.strip()]
+    msg["To"] = ",".join(tos)
+    ctx = ssl.create_default_context()
+    if config.SMTP_PORT == 465:
+        with smtplib.SMTP_SSL(config.SMTP_HOST, config.SMTP_PORT, context=ctx, timeout=15) as srv:
+            srv.login(config.SMTP_USER, config.SMTP_PASSWORD)
+            srv.sendmail(config.SMTP_USER, tos, msg.as_string())
+    else:
+        with smtplib.SMTP(config.SMTP_HOST, config.SMTP_PORT, timeout=15) as srv:
+            srv.starttls(context=ctx)
+            srv.login(config.SMTP_USER, config.SMTP_PASSWORD)
+            srv.sendmail(config.SMTP_USER, tos, msg.as_string())
+    return True
+
+
+def _send_serverchan(title, content):
+    url = f"https://sctapi.ftqq.com/{config.SERVERCHAN_KEY}.send"
+    r = requests.post(url, data={"title": title, "desp": content}, timeout=12)
+    r.raise_for_status()
+    return r.json().get("code", 0) == 0
+
+
+def _send_wecom(title, content):
+    r = requests.post(config.WECOM_WEBHOOK,
+                      json={"msgtype": "text", "text": {"content": f"{title}\n{content}"}}, timeout=12)
+    r.raise_for_status()
+    return r.json().get("errcode", -1) == 0
+
+
+def _send_pushplus(title, content):
+    r = requests.post("https://www.pushplus.plus/send",
+                      json={"token": config.PUSHPLUS_TOKEN, "title": title, "content": content}, timeout=12)
+    r.raise_for_status()
+    return r.json().get("code", 0) == 200
+
+
+def notify(title, content):
+    """向所有已配置渠道推送，返回 {渠道: 'ok'|错误信息}。"""
+    st = channels_status()
+    senders = {"email": _send_email, "serverchan": _send_serverchan,
+               "wecom": _send_wecom, "pushplus": _send_pushplus}
+    result = {}
+    for ch, on in st.items():
+        if not on:
+            continue
+        try:
+            senders[ch](title, content)
+            result[ch] = "ok"
+        except Exception as e:
+            result[ch] = repr(e)[:120]
+    return result