# 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.

from trt_layer_auto_scan_test import TrtLayerAutoScanTest, SkipReasons
from program_config import TensorConfig, ProgramConfig
import unittest
import numpy as np
import paddle.inference as paddle_infer
from functools import partial
from typing import Optional, List, Callable, Dict, Any, Set


class TrtConvertDropoutTest(TrtLayerAutoScanTest):
    def is_program_valid(self, program_config: ProgramConfig) -> bool:
        return True

    def sample_program_configs(self):
        def generate_input1(dims, batch, attrs: List[Dict[str, Any]]):
            if dims == 1:
                return np.ones([64]).astype(np.float32)
            elif dims == 2:
                return np.ones([3, 64]).astype(np.float32)
            elif dims == 3:
                return np.ones([3, 64, 64]).astype(np.float32)
            else:
                return np.ones([batch, 3, 64, 64]).astype(np.float32)

        for dims in [1, 2, 3, 4]:
            for batch in [1, 2, 4]:
                for fix_seed in [False, True]:
                    for dropout_implementation in [
                            "downgrade_in_infer", "upscale_in_train"
                    ]:
                        for dropout_prob in [np.random.random()]:
                            for seed in [0, 64, 128, 512]:
                                self.dims = dims
                                dics = [{
                                    "fix_seed": fix_seed,
                                    "dropout_implementation":
                                    dropout_implementation,
                                    "dropout_prob": dropout_prob,
                                    "seed": seed,
                                    "is_test": True
                                }]

                                ops_config = [{
                                    "op_type": "dropout",
                                    "op_inputs": {
                                        "X": ["input_data"],
                                    },
                                    "op_outputs": {
                                        "Out": ["dropout_output_data"]
                                    },
                                    "op_attrs": dics[0]
                                }]
                                ops = self.generate_op_config(ops_config)

                                program_config = ProgramConfig(
                                    ops=ops,
                                    weights={},
                                    inputs={
                                        "input_data": TensorConfig(
                                            data_gen=partial(generate_input1,
                                                             dims, batch, dics))
                                    },
                                    outputs=["dropout_output_data"])

                                yield program_config

    def sample_predictor_configs(
            self, program_config) -> (paddle_infer.Config, List[int], float):
        def generate_dynamic_shape(attrs):
            if self.dims == 1:
                self.dynamic_shape.min_input_shape = {"input_data": [1]}
                self.dynamic_shape.max_input_shape = {"input_data": [128]}
                self.dynamic_shape.opt_input_shape = {"input_data": [64]}
            elif self.dims == 2:
                self.dynamic_shape.min_input_shape = {"input_data": [1, 32]}
                self.dynamic_shape.max_input_shape = {"input_data": [4, 64]}
                self.dynamic_shape.opt_input_shape = {"input_data": [3, 64]}
            elif self.dims == 3:
                self.dynamic_shape.min_input_shape = {"input_data": [1, 32, 32]}
                self.dynamic_shape.max_input_shape = {"input_data": [4, 64, 64]}
                self.dynamic_shape.opt_input_shape = {"input_data": [3, 64, 64]}
            else:
                self.dynamic_shape.min_input_shape = {
                    "input_data": [1, 3, 32, 32]
                }
                self.dynamic_shape.max_input_shape = {
                    "input_data": [4, 3, 64, 64]
                }
                self.dynamic_shape.opt_input_shape = {
                    "input_data": [1, 3, 64, 64]
                }

        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):
            if attrs[0]['dropout_implementation'] == "upscale_in_train":
                return 0, 2
            elif self.dims == 1:
                return 0, 3
            else:
                return 1, 2

        attrs = [
            program_config.ops[i].attrs
            for i in range(len(program_config.ops))
        ]

        # for static_shape
        clear_dynamic_shape()
        self.trt_param.precision = paddle_infer.PrecisionType.Float32
        yield self.create_inference_config(), generate_trt_nodes_num(
            attrs, False), 1e-5
        self.trt_param.precision = paddle_infer.PrecisionType.Half
        yield self.create_inference_config(), generate_trt_nodes_num(
            attrs, False), 1e-5

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

    def add_skip_trt_case(self):
        def teller1(program_config, predictor_config):
            if len(
                    program_config.inputs['input_data'].shape
            ) == 2 and not predictor_config.tensorrt_dynamic_shape_enabled():
                return True
            return False

        self.add_skip_case(
            teller1, SkipReasons.TRT_NOT_IMPLEMENTED,
            "The output shape has diff, but we can add shuffle layer to resolve it."
        )

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


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