Enhance AI chat functionality with property details retrieval

- Added logic in `chat_with_session_memory` to respond to user queries about images, features, floorplans, and video tours based on the provided properties.
- Implemented fallback responses for each property detail type to ensure clear communication when specific information is unavailable.
- Updated the system message to inform users about available options for additional property details, improving user interaction and experience.

ai_chat.py

@@ -12,6 +12,31 @@ def chat_with_session_memory(state):
     wa_id = state.get("wa_id")
     wamid = state.get("wamid")
     
+    msg_lower = state["user_message"].lower()
+    props = state.get("properties", [])
+    if props:
+        first = props[0]
+        # a) Images
+        if "image" in msg_lower or "images" in msg_lower:
+            imgs = first.get("images") or []
+            response = "\n".join(imgs) if imgs else "There aren't any images for that listing."
+            return {"response": response}
+        # b) Features
+        if "feature" in msg_lower:
+            feats = first.get("features") or []
+            response = "Features:\n" + "\n".join(f"• {f}" for f in feats) if feats else "No feature list available."
+            return {"response": response}
+        # c) Floorplan
+        if "floorplan" in msg_lower:
+            fp = first.get("floorplan_pdf")
+            response = fp if fp else "There isn't a floorplan PDF for that listing."
+            return {"response": response}
+        # d) Video
+        if "video" in msg_lower or "tour" in msg_lower:
+            vid = first.get("video_url")
+            response = vid if vid else "There isn't a video tour for that listing."
+            return {"response": response}
+    
     # Get conversation history from database
     session_messages = []
     if session_id:
@@ -56,6 +81,26 @@ def chat_with_session_memory(state):
                 f"- {title} in {loc}, {city}: {size} sqm, "
                 f"{price} ({ptype}); features: {features}\n"
             )
+            url = p.get("listing_url")
+            if url:
+                system_message += f"  Link: {url}\n"
+    
+    # After the listings loop, before building messages[]
+    extras = set()
+    for p in props[:5]:
+        if p.get("images"):
+            extras.add("images")
+        if p.get("features"):
+            extras.add("feature list")
+        if p.get("floorplan_pdf"):
+            extras.add("floorplan PDF")
+        if p.get("video_url"):
+            extras.add("video tour")
+    if extras:
+        opts = ", ".join(sorted(extras))
+        system_message += (
+            f"\nI can also share {opts} for any listing—just let me know what you'd like."
+        )
     
     # Build messages array with history
     messages = [{"role": "system", "content": system_message}]