# 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
from typing import Any, Dict, List

import numpy as np
from program_config import ProgramConfig, TensorConfig
from trt_layer_auto_scan_test import TrtLayerAutoScanTest

import paddle.inference as paddle_infer


class TrtConvertSplitTest(TrtLayerAutoScanTest):
    def is_program_valid(self, program_config: ProgramConfig) -> bool:
        inputs = program_config.inputs
        attrs = [
            program_config.ops[i].attrs for i in range(len(program_config.ops))
        ]
        if len(inputs['in_data'].shape) <= max(self.axes):
            return False
        return True

    def sample_program_configs(self):
        for dims in [2, 3, 4]:
            for batch in [3, 4]:
                for axes in [[2], [2, 3], [-1]]:
                    for attr_axis in [True, False]:
                        self.batch = batch
                        self.dims = dims
                        self.axes = axes
                        dics = [{"axes": []}]
                        if attr_axis:
                            dics[0]["axes"] = axes
                        ops_config = [
                            {
                                "op_type": "squeeze2",
                                "op_inputs": {"X": ["in_data"]},
                                "op_outputs": {
                                    "Out": ["out_data"],
                                    "XShape": ["XShape_data"],
                                },
                                "op_attrs": dics[0],
                            }
                        ]
                        # new_axes is the update of axes
                        new_axes = list(axes)
                        for i in range(len(new_axes)):
                            if new_axes[i] < 0:
                                new_axes[i] += dims
                        if max(new_axes) >= dims:
                            continue
                        # generate input data
                        self.input_shape = [1] * dims
                        for i in range(dims):
                            self.input_shape[i] = np.random.randint(1, 20)

                        def generate_input1(attrs: List[Dict[str, Any]], batch):
                            self.input_shape[0] = batch
                            for i in new_axes:
                                self.input_shape[i] = 1
                            return np.random.random(self.input_shape).astype(
                                np.float32
                            )

                        ops = self.generate_op_config(ops_config)
                        program_config = ProgramConfig(
                            ops=ops,
                            weights={},
                            inputs={
                                "in_data": TensorConfig(
                                    data_gen=partial(
                                        generate_input1, dics, batch
                                    )
                                )
                            },
                            outputs=["out_data"],
                        )

                        yield program_config

    def sample_predictor_configs(
        self, program_config
    ) -> (paddle_infer.Config, List[int], float):
        def generate_dynamic_shape(attrs):
            max_shape = list(self.input_shape)
            min_shape = list(self.input_shape)
            opt_shape = list(self.input_shape)
            self.dynamic_shape.min_input_shape = {"in_data": min_shape}
            self.dynamic_shape.max_input_shape = {"in_data": max_shape}
            self.dynamic_shape.opt_input_shape = {"in_data": opt_shape}

        def clear_dynamic_shape():
            self.dynamic_shape.min_input_shape = {}
            self.dynamic_shape.max_input_shape = {}
            self.dynamic_shape.opt_input_shape = {}

        def generate_trt_nodes_num(attrs, dynamic_shape):
            return 1, 2

        attrs = [
            program_config.ops[i].attrs for i in range(len(program_config.ops))
        ]
        self.trt_param.max_batch_size = 9
        # for static_shape
        clear_dynamic_shape()
        self.trt_param.precision = paddle_infer.PrecisionType.Float32
        program_config.set_input_type(np.float32)
        yield self.create_inference_config(), generate_trt_nodes_num(
            attrs, False
        ), 1e-5
        self.trt_param.precision = paddle_infer.PrecisionType.Half
        program_config.set_input_type(np.float16)
        yield self.create_inference_config(), generate_trt_nodes_num(
            attrs, False
        ), 1e-3

        # for dynamic_shape
        generate_dynamic_shape(attrs)
        self.trt_param.precision = paddle_infer.PrecisionType.Float32
        program_config.set_input_type(np.float32)
        yield self.create_inference_config(), generate_trt_nodes_num(
            attrs, True
        ), 1e-5
        self.trt_param.precision = paddle_infer.PrecisionType.Half
        program_config.set_input_type(np.float16)
        yield self.create_inference_config(), generate_trt_nodes_num(
            attrs, True
        ), 1e-3

    def add_skip_trt_case(self):
        pass

    def test(self):
        self.add_skip_trt_case()
        self.run_test()


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