"""Offline container smoke check: seed cache, filename normalization and DWG decode.

Run with a read-only existing DWG mounted at /test-input.dwg. No AI calls.
"""
import hashlib
import json
from pathlib import Path
import re
import sys
import tempfile
sys.path.insert(0, '/app/src/backend')
from shared_cache_seed import install_bundle
from model_snapshot_lookup import job_drawings, lookup
from dwg_conversion import convert_dwg


def main():
    source = Path('/test-input.dwg')
    raw_hash = hashlib.sha256(source.read_bytes()).hexdigest()
    with tempfile.TemporaryDirectory(prefix='packaged-dwg-test-') as tmp:
        data = Path(tmp)
        install_bundle(Path('/app/shared-cache/selected-models.zip'), data)
        jobs = data / '8097-jobs'
        matches = []
        for file in jobs.glob('*.json'):
            job = json.loads(file.read_text())
            drawings = job_drawings(job, data / 'uploads')
            hit = lookup(jobs, drawings, data / 'uploads')
            assert hit and hit['jobId'] == file.stem
            renamed = [dict(row, name=re.sub(r'_(\d\d)_', r'(\1)', row['name'])) for row in drawings]
            assert lookup(jobs, renamed, data / 'uploads')['jobId'] == file.stem
            if len(drawings) > 1:
                assert lookup(jobs, renamed[:-1], data / 'uploads') is None
            changed = [dict(row) for row in drawings]
            changed[0]['sha256'] = 'f' * 64
            assert lookup(jobs, changed, data / 'uploads') is None
            matches.extend(row for row in drawings if row['sha256'] == raw_hash)
        assert matches, 'Input DWG does not correspond to a retained model'
        audit = convert_dwg(source, data / 'decoded.dxf')
        expected = matches[0]['conversionAudit']
        assert audit['source_sha256'] == raw_hash
        assert audit['entity_count'] == expected['entity_count'], (audit['entity_count'], expected['entity_count'])
        print(json.dumps({'cached_models_checked': len(list(jobs.glob('*.json'))),
                          'dwg_entity_count': audit['entity_count'],
                          'dxf_bytes_equal_to_saved_conversion': audit['output_sha256'] == expected['output_sha256'],
                          'ai_calls': 0}))


if __name__ == '__main__':
    main()