06/05 Optimize app: add email notification

app/routes/settings.py

@@ -68,6 +68,7 @@ class ProfileForm(FlaskForm):
     ])
     currency = SelectField('Currency', choices=CURRENCIES)
     groq_model = SelectField('AI Model', choices=GROQ_MODELS)
+    budget_alerts_enabled = BooleanField('Email me when a budget category reaches 80% or 100%')
     submit = SubmitField('Save Profile')
 
 
@@ -156,10 +157,28 @@ def profile():
         current_user.currency = form.currency.data
         current_user.currency_symbol = CURRENCY_SYMBOLS.get(form.currency.data, '$')
         current_user.groq_model = form.groq_model.data
+        current_user.budget_alerts_enabled = form.budget_alerts_enabled.data
         db.session.commit()
         flash('Profile updated.', 'success')
         return redirect(url_for('settings.profile'))
-    return render_template('settings/profile.html', form=form)
+    smtp_ok = all([
+        current_app.config.get('SMTP_HOST'),
+        current_app.config.get('SMTP_USER'),
+        current_app.config.get('SMTP_PASSWORD'),
+        current_app.config.get('ALERT_EMAIL'),
+    ])
+    return render_template('settings/profile.html', form=form,
+                           smtp_ok=smtp_ok,
+                           alert_email=current_app.config.get('ALERT_EMAIL', ''))
+
+
+@settings_bp.route('/test-email', methods=['POST'])
+@login_required
+def test_email():
+    from app.services.alert_service import send_test_email
+    ok, msg = send_test_email()
+    flash(msg, 'success' if ok else 'danger')
+    return redirect(url_for('settings.profile'))
 
 
 @settings_bp.route('/password', methods=['GET', 'POST'])