chat history with the NPC modal

public_web/app/__init__.py

@@ -12,6 +12,7 @@ import structlog
 import yaml
 import os
 from pathlib import Path
+from datetime import datetime, timezone
 
 
 logger = structlog.get_logger(__name__)
@@ -61,6 +62,34 @@ def create_app():
     app.register_blueprint(character_bp)
     app.register_blueprint(game_bp)
 
+    # Register Jinja filters
+    def format_timestamp(iso_string: str) -> str:
+        """Convert ISO timestamp to relative time (e.g., '2 mins ago')"""
+        if not iso_string:
+            return ""
+        try:
+            timestamp = datetime.fromisoformat(iso_string.replace('Z', '+00:00'))
+            now = datetime.now(timezone.utc)
+            diff = now - timestamp
+
+            seconds = diff.total_seconds()
+            if seconds < 60:
+                return "Just now"
+            elif seconds < 3600:
+                mins = int(seconds / 60)
+                return f"{mins} min{'s' if mins != 1 else ''} ago"
+            elif seconds < 86400:
+                hours = int(seconds / 3600)
+                return f"{hours} hr{'s' if hours != 1 else ''} ago"
+            else:
+                days = int(seconds / 86400)
+                return f"{days} day{'s' if days != 1 else ''} ago"
+        except Exception as e:
+            logger.warning("timestamp_format_failed", iso_string=iso_string, error=str(e))
+            return iso_string
+
+    app.jinja_env.filters['format_timestamp'] = format_timestamp
+
     # Register dev blueprint only in development
     env = os.getenv("FLASK_ENV", "development")
     if env == "development":

public_web/app/views/game_views.py

@@ -748,6 +748,40 @@ def npc_chat_modal(session_id: str, npc_id: str):
         '''
 
 
+@game_bp.route('/session/<session_id>/npc/<npc_id>/history')
+@require_auth
+def npc_chat_history(session_id: str, npc_id: str):
+    """Get last 5 chat messages for history sidebar."""
+    client = get_api_client()
+
+    try:
+        # Get session to find character_id
+        session_response = client.get(f'/api/v1/sessions/{session_id}')
+        session_data = session_response.get('result', {})
+        character_id = session_data.get('character_id')
+
+        # Fetch last 5 messages from chat service
+        # API endpoint: GET /api/v1/characters/{character_id}/chats/{npc_id}?limit=5
+        history_response = client.get(
+            f'/api/v1/characters/{character_id}/chats/{npc_id}',
+            params={'limit': 5, 'offset': 0}
+        )
+        result_data = history_response.get('result', {})
+        messages = result_data.get('messages', [])  # Extract messages array from result
+
+        # Render history partial
+        return render_template(
+            'game/partials/npc_chat_history.html',
+            messages=messages,
+            session_id=session_id,
+            npc_id=npc_id
+        )
+
+    except APIError as e:
+        logger.error("failed_to_load_chat_history", session_id=session_id, npc_id=npc_id, error=str(e))
+        return '<div class="history-empty">Failed to load history</div>', 500
+
+
 @game_bp.route('/session/<session_id>/npc/<npc_id>/talk', methods=['POST'])
 @require_auth
 def talk_to_npc(session_id: str, npc_id: str):