from pathlib import Path
import hashlib,difflib,json
source=Path('C:/kefu/wechat_rpa');target=Path('C:/wechat_rpa');out=Path(__file__).resolve().parent
extensions={'.py','.ps1','.spec','.md','.txt','.bat','.cmd'}
def files(root):
    result={p.name:p for p in root.iterdir() if p.is_file() and p.suffix in extensions}
    for folder in ['assets','archive_exporter','dsh_desk','backend_deploy']:
        if not (root/folder).exists():continue
        for p in (root/folder).rglob('*'):
            if p.is_file() and not any(x in {'node_modules','__pycache__','.git','dist','build'} for x in p.parts):
                result[p.relative_to(root).as_posix()]=p
    return result
def text(p):
    try:return p.read_text(encoding='utf-8-sig').replace('\r\n','\n')
    except UnicodeDecodeError:return None
a,b=files(source),files(target);changed=[];diff=[]
for name in sorted(a.keys()&b.keys()):
    left,right=text(a[name]),text(b[name])
    if (left==right if left is not None and right is not None else a[name].read_bytes()==b[name].read_bytes()):continue
    entry={'path':name,'source_bytes':a[name].stat().st_size,'target_bytes':b[name].stat().st_size}
    if left is not None and right is not None:
        changes=list(difflib.unified_diff(left.splitlines(),right.splitlines(),fromfile='current/'+name,tofile='protocol/'+name,n=3))
        entry['diff_lines']=len(changes);diff.extend(changes)
    changed.append(entry)
result={'source_only':sorted(a.keys()-b.keys()),'target_only':sorted(b.keys()-a.keys()),'changed':changed,'same_count':len(a.keys()&b.keys())-len(changed)}
(out/'inventory.json').write_text(json.dumps(result,ensure_ascii=False,indent=2),encoding='utf-8')
(out/'comparison.diff').write_text('\n'.join(diff),encoding='utf-8')
print(json.dumps(result,ensure_ascii=False,indent=2))