Update dashboard to handle newsletter send status and redirect accordingly

- Added logic to retrieve and display the send status and message on the dashboard.
- Modified the send_now function to redirect to the dashboard with query parameters for status and message.
- Removed redundant context updates in the send_now function for cleaner code.

app/main.py

@@ -2,6 +2,7 @@ import asyncio
 import logging
 from datetime import datetime
 from pathlib import Path
+from urllib.parse import urlencode
 
 from pydantic import ValidationError
 
@@ -337,6 +338,10 @@ async def _generate_newsletter(
 @app.get("/dashboard", response_class=HTMLResponse)
 async def dashboard(request: Request, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
     context = _base_context(request, current_user, db)
+    send_status = request.query_params.get("send_status")
+    send_result = None
+    if send_status:
+        send_result = {"status": send_status, "message": request.query_params.get("send_msg", "")}
     context.update({
         "articles": [],
         "articles_new": [],
@@ -347,7 +352,7 @@ async def dashboard(request: Request, db: Session = Depends(get_db), current_use
         "subject": "",
         "filters": _empty_filters(),
         "wiki_error": None,
-        "send_result": None,
+        "send_result": send_result,
     })
     logs = db.query(SendLog).order_by(SendLog.created_at.desc()).limit(20).all()
     context["send_logs"] = logs
@@ -463,31 +468,8 @@ async def send_now(
         status_code, detail = send_newsletter(db, gen["subject"], gen["raw_html"], gen["plain_text"], recipients, scheduled=False)
         send_result = {"status": status_code, "message": detail}
 
-    context = _base_context(request, current_user, db)
+    query = urlencode({"send_status": send_result["status"], "send_msg": send_result["message"]})
-    context.update(
+    return RedirectResponse(url=f"/dashboard?{query}", status_code=status.HTTP_303_SEE_OTHER)
-        {
-            "articles": gen["articles"],
-            "articles_new": gen["articles_new"],
-            "articles_edited": gen["articles_edited"],
-            "raw_html": gen["raw_html"],
-            "outlook_html": gen["outlook_html"],
-            "plain_text": gen["plain_text"],
-            "subject": gen["subject"],
-            "filters": {
-                "days": days,
-                "period": period,
-                "article_type": article_type,
-                "category": category,
-                "display": display,
-                "editor_tip": editor_tip,
-                "highlights": highlights,
-            },
-            "send_logs": db.query(SendLog).order_by(SendLog.created_at.desc()).limit(20).all(),
-            "wiki_error": gen["wiki_error"],
-            "send_result": send_result,
-        }
-    )
-    return _render(request, "dashboard.html", context)
 
 
 @app.post("/admin/smtp")