# Copyright 2022 Huawei Technologies Co., Ltd
#
# 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 platform
import numpy as np
import pytest

import mindspore as ms
from mindspore import nn
from mindspore import ops
from mindspore import context, Tensor
from mindspore import jit


class NetInner(nn.Cell):
    def __init__(self):
        super(NetInner, self).__init__()
        self.log = ops.Log()
        self.exp = ops.Exp()
        self.addn = ops.AddN()
        self.relu = nn.ReLU()

    def construct(self, x, y):
        x = self.addn((x, y))
        x = self.log(x)
        x = self.exp(x)
        x = self.relu(x)
        x = self.addn((x, y))
        return x


class Net(nn.Cell):
    def __init__(self):
        super(Net, self).__init__()
        self.log = ops.Log()
        self.exp = ops.Exp()
        self.addn = ops.AddN()
        self.relu = nn.ReLU()
        self.inner = NetInner()

    def construct(self, x, y):
        x = self.addn((x, y))
        x = self.inner(x, y)
        x = self.log(x)
        x = self.exp(x)
        x = self.relu(x)
        return x


class CmpNetInner(nn.Cell):
    def __init__(self):
        super(CmpNetInner, self).__init__()
        self.log = ops.Log()
        self.exp = ops.Exp()
        self.addn = ops.AddN()
        self.relu = nn.ReLU()

    @jit
    def construct(self, x, y):
        x = self.addn((x, y))
        x = self.log(x)
        x = self.exp(x)
        x = self.relu(x)
        x = self.addn((x, y))
        return x


@jit
def cmp_func_inner(x, y):
    x = ops.AddN()((x, y))
    x = ops.Log()(x)
    x = ops.Exp()(x)
    x = nn.ReLU()(x)
    x = ops.AddN()((x, y))
    return x


class CmpNet(nn.Cell):
    def __init__(self):
        super(CmpNet, self).__init__()
        self.log = ops.Log()
        self.exp = ops.Exp()
        self.addn = ops.AddN()
        self.relu = nn.ReLU()
        self.inner = CmpNetInner()

    def construct(self, x, y):
        x = self.addn((x, y))
        x = self.inner(x, y)
        x = self.log(x)
        x = self.exp(x)
        x = self.relu(x)
        return x


class CmpFunc(nn.Cell):
    def __init__(self):
        super(CmpFunc, self).__init__()
        self.log = ops.Log()
        self.exp = ops.Exp()
        self.addn = ops.AddN()
        self.relu = nn.ReLU()

    def construct(self, x, y):
        x = self.addn((x, y))
        x = cmp_func_inner(x, y)
        x = self.log(x)
        x = self.exp(x)
        x = self.relu(x)
        return x


@pytest.mark.level0
@pytest.mark.platform_x86_cpu
@pytest.mark.platform_arm_ascend_training
@pytest.mark.platform_x86_ascend_training
@pytest.mark.platform_x86_gpu_training
@pytest.mark.env_onecard
def test_pynative_dyn_shape_inner_ms_function():
    """
    Feature: PyNative ms_function dynamic shape function.
    Description: Test PyNative ms_function dynamic shape function. ms_function decorates inner cell/function.
    Expectation: The calculation result is correct.
    """
    if platform.system() == 'Windows':
        return

    context.set_context(mode=context.PYNATIVE_MODE)
    net = Net()
    cmp_net = CmpNet()
    cmp_func = CmpFunc()
    cmp_net.set_inputs(Tensor(shape=[2, 3, 6, None], dtype=ms.float32),
                       Tensor(shape=[2, 3, None, None], dtype=ms.float32))
    cmp_func.set_inputs(Tensor(shape=[2, 3, 6, None], dtype=ms.float32),
                        Tensor(shape=[2, 3, None, None], dtype=ms.float32))
    input_x = Tensor(np.random.rand(2, 3, 6, 8).astype(np.float32) * 2)
    input_y = Tensor(np.random.rand(2, 3, 6, 8).astype(np.float32) * 5)
    input_x2 = Tensor(np.random.rand(2, 3, 6, 16).astype(np.float32) * 2)
    input_y2 = Tensor(np.random.rand(2, 3, 6, 16).astype(np.float32) * 5)
    grad_op = ops.GradOperation(get_all=True, get_by_list=False, sens_param=True)
    # run first shape
    out = net(input_x, input_y)
    net_cmp_out = cmp_net(input_x, input_y)
    assert np.allclose(out.asnumpy(), net_cmp_out.asnumpy(), 0.00001, 0.00001)
    func_cmp_out = cmp_func(input_x, input_y)
    assert np.allclose(out.asnumpy(), func_cmp_out.asnumpy(), 0.00001, 0.00001)
    grad = grad_op(net)(input_x, input_y, out)
    net_cmp_grad = grad_op(cmp_net)(input_x, input_y, net_cmp_out)
    assert np.allclose(grad[0].asnumpy(), net_cmp_grad[0].asnumpy(), 0.00001, 0.00001)
    assert np.allclose(grad[1].asnumpy(), net_cmp_grad[1].asnumpy(), 0.00001, 0.00001)
    func_cmp_grad = grad_op(cmp_func)(input_x, input_y, func_cmp_out)
    assert np.allclose(grad[0].asnumpy(), func_cmp_grad[0].asnumpy(), 0.00001, 0.00001)
    assert np.allclose(grad[1].asnumpy(), func_cmp_grad[1].asnumpy(), 0.00001, 0.00001)

    # run second shape
    out = net(input_x2, input_y2)
    net_cmp_out = cmp_net(input_x2, input_y2)
    assert np.allclose(out.asnumpy(), net_cmp_out.asnumpy(), 0.00001, 0.00001)
    func_cmp_out = cmp_func(input_x2, input_y2)
    assert np.allclose(out.asnumpy(), func_cmp_out.asnumpy(), 0.00001, 0.00001)
