# Copyright 2021 Huawei Technologies Co., Ltd
#
# Licensed under the BSD 3-Clause License  (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://opensource.org/licenses/BSD-3-Clause
#
# 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.
import os.path as osp
from argparse import ArgumentParser

from mmdet.apis import inference_detector, init_detector, show_result_pyplot


def main():
    parser = ArgumentParser()
    parser.add_argument('--img', default='demo/demo.jpg', help='Image file')
    parser.add_argument(
        '--config',
        default='configs/ssd/ssd300_coco_npu.py',
        help='Config file')
    parser.add_argument(
        '--checkpoint',
        default='work_dirs/ssd300_coco_npu_8p/latest.pth',
        help='Checkpoint file')
    parser.add_argument(
        '--device', default='npu:0', help='Device used for inference')
    parser.add_argument(
        '--score-thr', type=float, default=0.3, help='bbox score threshold')
    parser.add_argument('--show', action='store_true', help='show results')
    parser.add_argument(
        '--show-dir',
        default='show_dir',
        help='directory where painted images will be saved')
    args = parser.parse_args()

    # build the model from a config file and a checkpoint file
    model = init_detector(args.config, args.checkpoint, device=args.device)
    # test a single image
    result = inference_detector(model, args.img)
    # show the results
    if args.show_dir:
        out_file = osp.join(args.show_dir, osp.basename(args.img))
    else:
        out_file = None
    model.show_result(
        args.img,
        result,
        show=args.show,
        out_file=out_file,
        score_thr=args.score_thr)


if __name__ == '__main__':
    main()