#!/usr/bin/env python
# Copyright 2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""
proto-to-results-json.py

Convert a protobuf result document into the JSON format.

Example:

    $ capa --json foo.exe > foo.json
    $ python proto-from-results.py foo.json > foo.pb
    $ python proto-to-results.py foo.pb | jq . | head
    ────┼────────────────────────────────────────────────────
    1   │ {
    2   │   "meta": {
    3   │     "analysis": {
    4   │       "arch": "i386",
    5   │       "base_address": {
    6   │         "type": "absolute",
    7   │         "value": 268435456
    8   │       },
    9   │       "extractor": "VivisectFeatureExtractor",
    10  │       "feature_counts": {
    ────┴────────────────────────────────────────────────────

"""
import sys
import logging
import argparse
from pathlib import Path

import capa.main
import capa.render.json
import capa.render.proto
import capa.render.proto.capa_pb2
import capa.render.result_document

logger = logging.getLogger("capa.proto-to-results-json")


def main(argv=None):
    if argv is None:
        argv = sys.argv[1:]

    parser = argparse.ArgumentParser(description="Convert a capa protobuf result document into the JSON format")
    capa.main.install_common_args(parser)
    parser.add_argument(
        "pb", type=str, help="path to protobuf result document file, produced by `proto-from-results.py`"
    )
    args = parser.parse_args(args=argv)

    try:
        capa.main.handle_common_args(args)
    except capa.main.ShouldExitError as e:
        return e.status_code

    pb = Path(args.pb).read_bytes()

    rdpb = capa.render.proto.capa_pb2.ResultDocument()
    rdpb.ParseFromString(pb)

    rd = capa.render.proto.doc_from_pb2(rdpb)
    print(rd.model_dump_json(exclude_none=True, indent=2))


if __name__ == "__main__":
    sys.exit(main())