"""Read the reviewed local policy sidecar; default excludes clauses lacking originals."""
import argparse
import hashlib
import json
from pathlib import Path


def main():
    p = argparse.ArgumentParser(description=__doc__)
    p.add_argument('--input', type=Path, required=True)
    p.add_argument('--keyword', default='')
    p.add_argument('--document-id')
    p.add_argument('--clause-id')
    p.add_argument('--include-pending', action='store_true')
    p.add_argument('--limit', type=int, default=20)
    args = p.parse_args()
    if not 1 <= args.limit <= 100:
        p.error('limit must be 1..100')
    raw = args.input.read_bytes()
    data = json.loads(raw)
    if data.get('schema') != 'ksf.policy-usage-review.v1':
        p.error('unexpected data schema')
    rows = []
    for r in data['clauses']:
        if not args.include_pending and r['verification'] == 'PENDING_ORIGINAL':
            continue
        if args.document_id and r['documentId'] != args.document_id:
            continue
        if args.clause_id and r['clauseId'] != args.clause_id:
            continue
        if args.keyword.casefold() not in json.dumps(r,ensure_ascii=False).casefold():
            continue
        rows.append(r)
    print(json.dumps({'ok':True,'generation':data['generation'],'reviewDate':data['reviewDate'],
        'inputSha256':hashlib.sha256(raw).hexdigest(),'readOnly':True,'databaseWrites':0,
        'paidCalls':0,'totalMatched':len(rows),'includePending':args.include_pending,
        'rows':rows[:args.limit],'interpretationIsRegulation':False},ensure_ascii=False,indent=2))


if __name__ == '__main__':
    main()