from pathlib import Path
import hashlib,json,sys
run=Path(__file__).resolve().parent
root=run.parents[1]
record=json.loads((run/'baseline.json').read_text(encoding='utf-8'))
source=root/'examples/release1'
dependency=record['external_dependency']
phase=sys.argv[1]
assert phase in ['collision','saved-a','saved-c','external-before','inject','external-refused','restore','external-recovered']
sha=lambda b:hashlib.sha256(b).hexdigest()
original={r:(source/r).read_bytes() for r in record['baseline']}
assert {r:{'bytes':len(b),'sha256':sha(b)} for r,b in original.items()}==record['baseline']
def check(folder,expected):
    actual={f.relative_to(folder).as_posix():f.read_bytes() for f in folder.rglob('*') if f.is_file()}
    assert actual.keys()==expected.keys(),(phase,'file set', sorted(actual.keys()^expected.keys()))
    assert all(actual[r]==b for r,b in expected.items()),(phase,'changed files',[r for r,b in expected.items() if actual[r]!=b])
    return {r:{'bytes':len(b),'sha256':sha(b)} for r,b in actual.items()}
if phase in ['collision','saved-a','saved-c']:
    expected=original.copy()
    if phase!='collision':
        old=b'oa_activity oa_assess "Assess pressure alarm" id "61f7bbfb-74a4-5540-9182-2583dfb27a49"'
        new=b'oa_activity oa_assess "Assess pressure alarm QA46" id "61f7bbfb-74a4-5540-9182-2583dfb27a49"'
        assert expected[dependency].count(old)==1
        expected[dependency]=expected[dependency].replace(old,new)
    folder=run/('fresh-c' if phase=='saved-c' else 'collision-a')
    assert not (run/'collision-a/collision-copy.arcadia').exists()
    files=check(folder,expected)
else:
    folder=run/'external-b'
    changed=original.copy();changed[dependency]+=record['external_comment'].encode('utf-8')
    if phase=='inject':
        check(folder,original)
        (folder/dependency).write_bytes(changed[dependency])
        expected=changed
    elif phase=='restore':
        check(folder,changed)
        (folder/dependency).write_bytes(original[dependency])
        expected=original
    else: expected=changed if phase=='external-refused' else original
    files=check(folder,expected)
result={'status':'PASS','phase':phase,'folder':str(folder),'files':files,'scope':'Every byte and relative filename, including seven companion files, equals the independently declared original bundle plus only the phase-specific activity rename or parent-injected valid comment.'}
with (run/(phase+'-oracle.json')).open('x',encoding='utf-8') as f:json.dump(result,f,indent=2)
print(json.dumps({'status':result['status'],'phase':phase,'files':len(files)},indent=2))