import json

def analyze_drs(tracking_json):
    try:
        data = json.loads(tracking_json)
        pitch = data.get("pitching", "").lower()
        impact = data.get("impact", "").lower()
        traj = data.get("trajectory", "").lower()

        if pitch == "outside leg":
            return {"drs_decision": "NOT OUT", "reason": "Pitched outside leg - automatic NOT OUT"}

        if impact == "outside off" and data.get("shot", "yes").lower() == "yes":
            return {"drs_decision": "NOT OUT", "reason": "Impact outside off with shot"}

        if traj == "missing":
            return {"drs_decision": "NOT OUT", "reason": "Ball missing stumps"}

        return {"drs_decision": "OUT", "reason": "Ball pitched in line, impact in line, and hitting stumps"}

    except Exception as e:
        return {"drs_decision": "NOT OUT", "reason": f"Error in tracking data: {e}"}