# Copyright 2024 Tencent
# SPDX-License-Identifier: BSD-3-Clause

import torch
import torch.nn as nn
import torch.nn.functional as F
from packaging import version

class Model(nn.Module):
    def __init__(self):
        super(Model, self).__init__()

        self.pool_0 = nn.MaxPool1d(kernel_size=3)
        self.pool_1 = nn.MaxPool1d(kernel_size=4, stride=2, padding=2, dilation=1)
        self.pool_2 = nn.MaxPool1d(kernel_size=3, stride=1, padding=1, dilation=1, return_indices=False, ceil_mode=False)
        self.pool_3 = nn.MaxPool1d(kernel_size=5, stride=2, padding=2, dilation=1, return_indices=False, ceil_mode=True)
        if version.parse(torch.__version__) < version.parse('1.12'):
            self.pool_4 = nn.MaxPool1d(kernel_size=3, stride=1, padding=1, dilation=1, return_indices=False, ceil_mode=False)
        else:
            self.pool_4 = nn.MaxPool1d(kernel_size=3, stride=1, padding=1, dilation=2, return_indices=False, ceil_mode=False)
        self.pool_5 = nn.MaxPool1d(kernel_size=2, stride=1, padding=0, dilation=1, return_indices=True, ceil_mode=True)
        self.pool_6 = nn.MaxPool1d(kernel_size=5, stride=1, padding=2, dilation=1, return_indices=True, ceil_mode=False)

    def forward(self, x):
        x = self.pool_0(x)
        x = self.pool_1(x)
        x = self.pool_2(x)
        x = self.pool_3(x)
        x = self.pool_4(x)
        x, tx = self.pool_5(x)
        x, indices = self.pool_6(x)
        return x, indices

def test():
    net = Model()
    net.eval()

    torch.manual_seed(0)
    x = torch.rand(1, 12, 64)

    a = net(x)

    # export onnx
    torch.onnx.export(net, (x,), "test_nn_MaxPool1d.onnx")

    # onnx to pnnx
    import os
    os.system("../../src/pnnx test_nn_MaxPool1d.onnx inputshape=[1,12,64]")

    # pnnx inference
    import test_nn_MaxPool1d_pnnx
    b = test_nn_MaxPool1d_pnnx.test_inference()

    for a0, b0 in zip(a, b):
        if not torch.equal(a0, b0):
            return False
    return True

if __name__ == "__main__":
    if test():
        exit(0)
    else:
        exit(1)
