# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
#
# 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.

import unittest
from functools import partial

import hypothesis.strategies as st
import numpy as np
from auto_scan_test import PassAutoScanTest
from program_config import ProgramConfig, TensorConfig


class TestConv3dBiasMkldnnFusePass(PassAutoScanTest):
    def is_program_valid(self, program_config: ProgramConfig) -> bool:
        return True

    def sample_program_config(self, draw):
        data_format = draw(st.sampled_from(["NCDHW", "NDHWC"]))
        dilations = draw(st.sampled_from([[1, 1, 1], [2, 2, 2], [1, 2, 1]]))
        padding_algorithm = draw(st.sampled_from(["EXPLICIT", "SAME", "VALID"]))
        groups = draw(st.sampled_from([1, 2, 4]))
        paddings = draw(st.sampled_from([[0, 3, 2], [1, 2, 3, 4, 3, 1]]))
        strides = draw(st.sampled_from([[1, 1, 1], [2, 2, 2], [1, 2, 1]]))
        axis = draw(st.sampled_from([1]))
        batch_size = draw(st.integers(min_value=1, max_value=4))

        def generate_input1(attrs):
            if attrs[0]['data_format'] == "NCDHW":
                return np.random.random(
                    [attrs[2]['batch_size'], 48, 64, 32, 64]
                ).astype(np.float32)
            else:
                return np.random.random(
                    [attrs[2]['batch_size'], 64, 32, 64, 48]
                ).astype(np.float32)

        def generate_weight1():
            return np.random.random([16, int(48 / groups), 3, 3, 3]).astype(
                np.float32
            )

        def generate_weight2():
            return np.random.random([16]).astype(np.float32)

        attrs = [
            {
                "data_format": data_format,
                "dilations": dilations,
                "padding_algorithm": padding_algorithm,
                "groups": groups,
                "paddings": paddings,
                "strides": strides,
            },
            {"axis": axis},
            {'batch_size': batch_size},
        ]

        ops_config = [
            {
                "op_type": "conv3d",
                "op_inputs": {
                    "Input": ["input_data1"],
                    "Filter": ["conv_weight"],
                },
                "op_outputs": {"Output": ["conv_output"]},
                "op_attrs": {
                    "data_format": attrs[0]['data_format'],
                    "dilations": attrs[0]['dilations'],
                    "padding_algorithm": attrs[0]['padding_algorithm'],
                    "groups": attrs[0]['groups'],
                    "paddings": attrs[0]['paddings'],
                    "strides": attrs[0]['strides'],
                    "is_test": True,
                },
            },
            {
                "op_type": "elementwise_add",
                "op_inputs": {
                    "X": ["conv_output"],
                    "Y": ["elementwise_weight"],
                },
                "op_outputs": {"Out": ["elementwise_output"]},
                "op_attrs": {'axis': attrs[1]['axis']},
            },
        ]

        ops = self.generate_op_config(ops_config)

        program_config = ProgramConfig(
            ops=ops,
            weights={
                "conv_weight": TensorConfig(data_gen=partial(generate_weight1)),
                "elementwise_weight": TensorConfig(
                    data_gen=partial(generate_weight2)
                ),
            },
            inputs={
                "input_data1": TensorConfig(
                    data_gen=partial(generate_input1, attrs)
                )
            },
            outputs=["elementwise_output"],
        )

        return program_config

    def sample_predictor_configs(self, program_config):
        config = self.create_inference_config(use_mkldnn=True)
        yield config, ["conv3d"], (1e-5, 1e-5)

    # TODO(baoachun)
    # Need to support 5-dimensional input when using mkldnn.
    def test(self):
        pass
        # self.run_and_statis(
        #     quant=False, passes=["conv3d_bias_mkldnn_fuse_pass"])


if __name__ == "__main__":
    unittest.main()
