feat: add notifications for B2B classifieds (questions, answers, interest)

Three new notification types:
- New question → author gets in-app + email
- Answer to question → questioner gets in-app + email
- Someone interested → author gets in-app only

Previously the B2B board had zero notifications, so authors never
knew someone asked a question about their listing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

blueprints/community/classifieds/routes.py

@@ -14,6 +14,13 @@ from database import SessionLocal, Classified, ClassifiedRead, ClassifiedInteres
 from sqlalchemy import desc
 from utils.helpers import sanitize_input
 from utils.decorators import member_required
+from utils.notifications import (
+    create_classified_question_notification,
+    create_classified_answer_notification,
+    create_classified_interest_notification,
+    send_classified_question_email,
+    send_classified_answer_email,
+)
 
 
 @bp.route('/', endpoint='classifieds_index')
@@ -309,6 +316,16 @@ def toggle_interest(classified_id):
             )
             db.add(interest)
             db.commit()
+
+            # Notify classified author (in-app only)
+            if classified.author_id != current_user.id:
+                try:
+                    interested_name = current_user.name or current_user.email.split('@')[0]
+                    create_classified_interest_notification(
+                        classified_id, classified.title, interested_name, classified.author_id)
+                except Exception as e:
+                    logger.warning(f"Failed to send classified interest notification: {e}")
+
             return jsonify({
                 'success': True,
                 'interested': True,
@@ -399,6 +416,20 @@ def ask_question(classified_id):
         db.add(question)
         db.commit()
 
+        # Notify classified author (in-app + email)
+        if classified.author_id != current_user.id:
+            questioner_name = current_user.name or current_user.email.split('@')[0]
+            try:
+                create_classified_question_notification(
+                    classified_id, classified.title, questioner_name, classified.author_id)
+                author = db.query(User).filter(User.id == classified.author_id).first()
+                if author and author.email and author.notify_email_messages != False:
+                    send_classified_question_email(
+                        classified_id, classified.title, questioner_name, content,
+                        author.email, author.name or author.email.split('@')[0])
+            except Exception as e:
+                logger.warning(f"Failed to send classified question notification: {e}")
+
         return jsonify({
             'success': True,
             'message': 'Pytanie dodane',
@@ -456,6 +487,20 @@ def answer_question(classified_id, question_id):
         question.answered_at = datetime.now()
         db.commit()
 
+        # Notify question author (in-app + email)
+        if question.author_id != current_user.id:
+            answerer_name = current_user.name or current_user.email.split('@')[0]
+            try:
+                create_classified_answer_notification(
+                    classified_id, classified.title, answerer_name, question.author_id)
+                q_author = db.query(User).filter(User.id == question.author_id).first()
+                if q_author and q_author.email and q_author.notify_email_messages != False:
+                    send_classified_answer_email(
+                        classified_id, classified.title, answerer_name, answer,
+                        q_author.email, q_author.name or q_author.email.split('@')[0])
+            except Exception as e:
+                logger.warning(f"Failed to send classified answer notification: {e}")
+
         return jsonify({
             'success': True,
             'message': 'Odpowiedź dodana',

utils/notifications.py

@@ -341,6 +341,173 @@ Norda Biznes Partner - https://nordabiznes.pl
     return count
 
 
+# ============================================================
+# B2B CLASSIFIEDS NOTIFICATIONS
+# ============================================================
+
+def create_classified_question_notification(classified_id, classified_title, questioner_name, author_id):
+    """Notify classified author that someone asked a question."""
+    return create_notification(
+        user_id=author_id,
+        title="Nowe pytanie do ogłoszenia B2B",
+        message=f"{questioner_name} zadał pytanie do ogłoszenia: {classified_title[:50]}{'...' if len(classified_title) > 50 else ''}",
+        notification_type='message',
+        related_type='classified_question',
+        related_id=classified_id,
+        action_url=f'/tablica/{classified_id}'
+    )
+
+
+def create_classified_answer_notification(classified_id, classified_title, answerer_name, questioner_id):
+    """Notify question author that the classified owner answered."""
+    return create_notification(
+        user_id=questioner_id,
+        title="Odpowiedź na Twoje pytanie B2B",
+        message=f"{answerer_name} odpowiedział na Twoje pytanie w ogłoszeniu: {classified_title[:50]}{'...' if len(classified_title) > 50 else ''}",
+        notification_type='message',
+        related_type='classified_answer',
+        related_id=classified_id,
+        action_url=f'/tablica/{classified_id}'
+    )
+
+
+def create_classified_interest_notification(classified_id, classified_title, interested_name, author_id):
+    """Notify classified author that someone is interested."""
+    return create_notification(
+        user_id=author_id,
+        title="Ktoś zainteresował się Twoim ogłoszeniem",
+        message=f"{interested_name} wyraził zainteresowanie ogłoszeniem: {classified_title[:50]}{'...' if len(classified_title) > 50 else ''}",
+        notification_type='message',
+        related_type='classified_interest',
+        related_id=classified_id,
+        action_url=f'/tablica/{classified_id}'
+    )
+
+
+def send_classified_question_email(classified_id, classified_title, questioner_name, question_content, author_email, author_name):
+    """Send email to classified author about a new question."""
+    from email_service import send_email, _email_v3_wrap
+
+    base_url = "https://nordabiznes.pl"
+    classified_url = f"{base_url}/tablica/{classified_id}"
+
+    preview = question_content[:200].strip()
+    if len(question_content) > 200:
+        preview += "..."
+
+    subject = f"Nowe pytanie do ogłoszenia: {classified_title[:60]}"
+
+    body_text = f"""{questioner_name} zadał pytanie do Twojego ogłoszenia: {classified_title}
+
+"{preview}"
+
+Zobacz i odpowiedz: {classified_url}
+
+---
+Norda Biznes Partner - https://nordabiznes.pl
+"""
+
+    content = f'''
+    <p style="margin:0 0 16px; color:#1e293b; font-size:16px;">Cześć <strong>{author_name}</strong>!</p>
+    <p style="margin:0 0 24px; color:#475569; font-size:15px; line-height:1.5;"><strong>{questioner_name}</strong> zadał pytanie do Twojego ogłoszenia na tablicy B2B:</p>
+
+    <table width="100%" cellpadding="0" cellspacing="0" style="background:#f8fafc; border-radius:10px; border: 1px solid #e2e8f0; margin-bottom:24px;">
+    <tr><td style="padding: 16px 20px;">
+        <p style="margin:0 0 4px; color:#64748b; font-size:12px; text-transform:uppercase; letter-spacing:0.5px;">Ogłoszenie</p>
+        <p style="margin:0; color:#1e3a8a; font-size:17px; font-weight:600;">{classified_title}</p>
+    </td></tr>
+    </table>
+
+    <table width="100%" cellpadding="0" cellspacing="0" style="background:#f1f5f9; border-left: 4px solid #f59e0b; border-radius: 0 8px 8px 0; margin-bottom:28px;">
+    <tr><td style="padding: 16px 20px;">
+        <p style="margin:0; color:#475569; font-size:14px; font-style:italic; line-height:1.6;">{preview}</p>
+    </td></tr>
+    </table>
+
+    <table width="100%" cellpadding="0" cellspacing="0" style="margin-bottom:20px;">
+    <tr><td align="center" style="padding: 8px 0;">
+        <a href="{classified_url}" style="display:inline-block; padding:16px 40px; background: linear-gradient(135deg, #1e3a8a, #172554); color:#ffffff; text-decoration:none; border-radius:8px; font-size:15px; font-weight:600;">Zobacz pytanie i odpowiedz &rarr;</a>
+    </td></tr>
+    </table>'''
+
+    body_html = _email_v3_wrap('Nowe pytanie do ogłoszenia B2B', 'Norda Biznes Partner', content)
+
+    try:
+        return send_email(
+            to=[author_email],
+            subject=subject,
+            body_text=body_text,
+            body_html=body_html,
+            email_type='classified_notification',
+            recipient_name=author_name
+        )
+    except Exception as e:
+        logger.error(f"Failed to send classified question email to {author_email}: {e}")
+        return None
+
+
+def send_classified_answer_email(classified_id, classified_title, answerer_name, answer_content, questioner_email, questioner_name):
+    """Send email to question author about an answer."""
+    from email_service import send_email, _email_v3_wrap
+
+    base_url = "https://nordabiznes.pl"
+    classified_url = f"{base_url}/tablica/{classified_id}"
+
+    preview = answer_content[:200].strip()
+    if len(answer_content) > 200:
+        preview += "..."
+
+    subject = f"Odpowiedź na Twoje pytanie: {classified_title[:60]}"
+
+    body_text = f"""{answerer_name} odpowiedział na Twoje pytanie w ogłoszeniu: {classified_title}
+
+"{preview}"
+
+Zobacz odpowiedź: {classified_url}
+
+---
+Norda Biznes Partner - https://nordabiznes.pl
+"""
+
+    content = f'''
+    <p style="margin:0 0 16px; color:#1e293b; font-size:16px;">Cześć <strong>{questioner_name}</strong>!</p>
+    <p style="margin:0 0 24px; color:#475569; font-size:15px; line-height:1.5;"><strong>{answerer_name}</strong> odpowiedział na Twoje pytanie w ogłoszeniu:</p>
+
+    <table width="100%" cellpadding="0" cellspacing="0" style="background:#f8fafc; border-radius:10px; border: 1px solid #e2e8f0; margin-bottom:24px;">
+    <tr><td style="padding: 16px 20px;">
+        <p style="margin:0 0 4px; color:#64748b; font-size:12px; text-transform:uppercase; letter-spacing:0.5px;">Ogłoszenie</p>
+        <p style="margin:0; color:#1e3a8a; font-size:17px; font-weight:600;">{classified_title}</p>
+    </td></tr>
+    </table>
+
+    <table width="100%" cellpadding="0" cellspacing="0" style="background:#f1f5f9; border-left: 4px solid #10b981; border-radius: 0 8px 8px 0; margin-bottom:28px;">
+    <tr><td style="padding: 16px 20px;">
+        <p style="margin:0; color:#475569; font-size:14px; font-style:italic; line-height:1.6;">{preview}</p>
+    </td></tr>
+    </table>
+
+    <table width="100%" cellpadding="0" cellspacing="0" style="margin-bottom:20px;">
+    <tr><td align="center" style="padding: 8px 0;">
+        <a href="{classified_url}" style="display:inline-block; padding:16px 40px; background: linear-gradient(135deg, #1e3a8a, #172554); color:#ffffff; text-decoration:none; border-radius:8px; font-size:15px; font-weight:600;">Zobacz odpowiedź &rarr;</a>
+    </td></tr>
+    </table>'''
+
+    body_html = _email_v3_wrap('Odpowiedź na pytanie B2B', 'Norda Biznes Partner', content)
+
+    try:
+        return send_email(
+            to=[questioner_email],
+            subject=subject,
+            body_text=body_text,
+            body_html=body_html,
+            email_type='classified_notification',
+            recipient_name=questioner_name
+        )
+    except Exception as e:
+        logger.error(f"Failed to send classified answer email to {questioner_email}: {e}")
+        return None
+
+
 def create_forum_reaction_notification(user_id, reactor_name, content_type, content_id, topic_id, emoji):
     """
     Notify user when someone reacts to their content.