자료 상태를 보존하는 미리보기·발행 판단 CLI

"""Pure declared-state gate. No discovery, rendering, storage or publication."""
import json,sys
MAX_FEATURES=1000
def evaluate_features(features,mode):
    if mode not in ('preview','release'):raise ValueError('mode must be preview or release')
    if not isinstance(features,list) or len(features)>MAX_FEATURES:raise ValueError('features must be a list of at most 1000 items')
    visible=[];absent=[];pending=[];seen=set()
    for row in features:
        if not isinstance(row,dict) or set(row)!={'id','state'}:raise ValueError('each feature needs exactly id and state')
        ident=row['id'];state=row['state']
        if not isinstance(ident,str) or not ident.strip() or len(ident)>120 or ident in seen:raise ValueError('feature IDs must be unique nonempty strings of at most 120 characters')
        if not isinstance(state,str) or state not in ('confirmed','absent','pending'):raise ValueError('unknown feature state')
        seen.add(ident)
        {'confirmed':visible,'absent':absent,'pending':pending}[state].append(ident)
    return {'mode':mode,'visible':visible,'declared_absent':absent,'pending':pending,'hidden':absent+pending,'can_build':mode=='preview' or not pending,'scope':'declared states only; no asset/source/rights/operating-site validation'}
def unique_object(pairs):
    result={}
    for key,value in pairs:
        if key in result:raise ValueError('duplicate JSON key')
        result[key]=value
    return result
def main():
    try:
        raw=sys.stdin.buffer.read(1024*1024+1)
        if len(raw)>1024*1024:raise ValueError('input exceeds 1 MiB')
        value=json.loads(raw,object_pairs_hook=unique_object)
        if not isinstance(value,dict) or set(value)!={'features','mode'}:raise ValueError('root needs exactly features and mode')
        result=evaluate_features(value['features'],value['mode'])
    except (ValueError,TypeError,RecursionError,UnicodeError):
        print(json.dumps({'error':'invalid feature-state contract'}));return 2
    print(json.dumps(result,ensure_ascii=False));return 0 if result['can_build'] else 1
if __name__=='__main__':raise SystemExit(main())