"""Compare predicted decisions and already-computed results; never execute SQL."""
import json

def model_input(row):
    return {k:row[k] for k in ('database_id','database_path','schema_sql','question_ar')}

def score(row, *, decision, result):
    if decision not in ('execute','clarify','unanswerable'):
        raise ValueError('decision must be execute, clarify or unanswerable')
    if decision == 'execute' and not isinstance(result,list):
        raise ValueError('execute requires a JSON-style list of rows')
    if decision in ('clarify','unanswerable') and result is not None:
        raise ValueError('clarify and unanswerable require result=None')
    decision_correct=decision==row['decision']
    expected=json.loads(row['expected_result_json']) if row['expected_result_json'] is not None else None
    canonical=lambda v:json.dumps(v,ensure_ascii=False,sort_keys=True,allow_nan=False,separators=(',',':'))
    return {'decision_correct':decision_correct,'joint_correct':decision_correct and canonical(result)==canonical(expected)}