"""
 Copyright (C) 2018-2020 Intel Corporation

 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 extensions.front.HSigmoid_fusion import HSigmoidWithClamp, HSigmoidWithMinMax, HSigmoidWithReluDiv, \
    HSigmoidWithReluMul
from mo.front.common.partial_infer.utils import float_array
from mo.utils.ir_engine.compare_graphs import compare_graphs
from mo.utils.unittest.graph import build_graph, const, regular_op, result, build_graph_with_edge_attrs

ref_nodes = {**regular_op('input', {'type': 'Parameter'}),
             **regular_op('hsigmoid', {'type': 'HSigmoid', 'name': 'final_mul'}),
             **result('result')
             }
ref_edges = [('input', 'hsigmoid'), ('hsigmoid', 'result')]


class HSigmoidWithClampTest(unittest.TestCase):
    nodes = {
        **regular_op('input', {'type': 'Parameter'}),
        **regular_op('add', {'op': 'Add'}),
        **regular_op('relu6', {'op': 'Clamp'}),
        **regular_op('mul_2', {'op': 'Mul', 'name': 'final_mul'}),
        **const('const_0', float_array([0.0])),
        **const('const_3', float_array([3.0])),
        **const('const_6', float_array([6.0])),
        **const('const_1_6', float_array([1.0 / 6.0])),
        **result('result'),
    }

    edges = [('input', 'add', {'in': 0, 'out': 0}),
             ('const_3', 'add', {'in': 1, 'out': 0}),
             ('add', 'relu6', {'in': 0, 'out': 0}),
             ('const_0', 'relu6', {'in': 1, 'out': 0}),
             ('const_6', 'relu6', {'in': 2, 'out': 0}),
             ('relu6', 'mul_2', {'in': 1, 'out': 0}),
             ('const_1_6', 'mul_2', {'in': 1, 'out': 0}),
             ('mul_2', 'result', {'in': 0, 'out': 0})]

    def test_hsigmoid_with_clamp(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {})

        graph_ref = build_graph(ref_nodes, ref_edges)
        graph.stage = 'front'

        HSigmoidWithClamp().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)
        self.assertTrue(len(graph.get_op_nodes(name='final_mul')) == 1 and
                        graph.get_op_nodes(name='final_mul')[0].op == 'HSigmoid')

    def test_hsigmoid_with_clamp_wrong_constant(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {'const_0': {'value': float_array([0.00001])}})

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithClamp().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)

    def test_hsigmoid_with_clamp_different_tensors(self):
        graph = build_graph_with_edge_attrs({
            **regular_op('input', {'type': 'Parameter'}),
            **regular_op('input_2', {'type': 'Parameter'}),
            **regular_op('add', {'op': 'Add'}),
            **regular_op('relu6', {'op': 'Clamp'}),
            **regular_op('mul', {'op': 'Mul'}),
            **regular_op('mul_2', {'op': 'Mul', 'name': 'final_mul'}),
            **const('const_0', float_array([0.0])),
            **const('const_3', float_array([3.0])),
            **const('const_6', float_array([6.0])),
            **const('const_1_6', float_array([1.0 / 6.0])),
            **result('result'),
        }, [('input', 'mul', {'in': 0, 'out': 0}),
            ('input_2', 'add', {'in': 0, 'out': 0}),
            ('const_3', 'add', {'in': 1, 'out': 0}),
            ('add', 'relu6', {'in': 0, 'out': 0}),
            ('const_0', 'relu6', {'in': 1, 'out': 0}),
            ('const_6', 'relu6', {'in': 2, 'out': 0}),
            ('relu6', 'mul', {'in': 1, 'out': 0}),
            ('mul', 'mul_2', {'in': 0, 'out': 0}),
            ('const_1_6', 'mul_2', {'in': 1, 'out': 0}),
            ('mul_2', 'result', {'in': 0, 'out': 0})])

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithClamp().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)


class HSigmoidWithMinMaxTest(unittest.TestCase):
    nodes = {
        **regular_op('input', {'type': 'Parameter'}),
        **regular_op('add', {'op': 'Add'}),
        **regular_op('max', {'op': 'Maximum'}),
        **regular_op('min', {'op': 'Minimum'}),
        **regular_op('mul_2', {'op': 'Mul', 'name': 'final_mul'}),
        **const('const_0', float_array([0.0])),
        **const('const_3', float_array([3.0])),
        **const('const_6', float_array([6.0])),
        **const('const_1_6', float_array([1.0 / 6.0])),
        **result('result'),
    }

    edges = [('input', 'add', {'in': 0, 'out': 0}),
             ('const_3', 'add', {'in': 1, 'out': 0}),
             ('add', 'max', {'in': 0, 'out': 0}),
             ('const_0', 'max', {'in': 1, 'out': 0}),
             ('max', 'min', {'in': 0, 'out': 0}),
             ('const_6', 'min', {'in': 1, 'out': 0}),
             ('min', 'mul_2', {'in': 0, 'out': 0}),
             ('const_1_6', 'mul_2', {'in': 1, 'out': 0}),
             ('mul_2', 'result', {'in': 0, 'out': 0})]

    def test_hsigmoid_with_min_max(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {})

        graph_ref = build_graph(ref_nodes, ref_edges)
        graph.stage = 'front'

        HSigmoidWithMinMax().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)
        self.assertTrue(len(graph.get_op_nodes(name='final_mul')) == 1 and
                        graph.get_op_nodes(name='final_mul')[0].op == 'HSigmoid')

    def test_hsigmoid_with_min_max_wrong_constant(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {'const_0': {'value': float_array([0.00001])}})

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithMinMax().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)

    def test_hsigmoid_with_min_max_different_tensors(self):
        graph = build_graph_with_edge_attrs({
            **regular_op('input', {'type': 'Parameter'}),
            **regular_op('input_2', {'type': 'Parameter'}),
            **regular_op('add', {'op': 'Add'}),
            **regular_op('max', {'op': 'Maximum'}),
            **regular_op('min', {'op': 'Minimum'}),
            **regular_op('mul', {'op': 'Mul'}),
            **regular_op('mul_2', {'op': 'Mul', 'name': 'final_mul'}),
            **const('const_0', float_array([0.0])),
            **const('const_3', float_array([3.0])),
            **const('const_6', float_array([6.0])),
            **const('const_1_6', float_array([1.0 / 6.0])),
            **result('result'),
        }, [('input_2', 'mul', {'in': 1, 'out': 0}),
            ('input', 'add', {'in': 0, 'out': 0}),
            ('const_3', 'add', {'in': 1, 'out': 0}),
            ('add', 'max', {'in': 0, 'out': 0}),
            ('const_0', 'max', {'in': 1, 'out': 0}),
            ('max', 'min', {'in': 0, 'out': 0}),
            ('const_6', 'min', {'in': 1, 'out': 0}),
            ('min', 'mul', {'in': 0, 'out': 0}),
            ('mul', 'mul_2', {'in': 0, 'out': 0}),
            ('const_1_6', 'mul_2', {'in': 1, 'out': 0}),
            ('mul_2', 'result', {'in': 0, 'out': 0})])

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithMinMax().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)


class HSigmoidWithReluDivTest(unittest.TestCase):
    nodes = {
        **regular_op('input', {'type': 'Parameter'}),
        **regular_op('add', {'op': 'Add'}),
        **regular_op('relu', {'op': 'ReLU'}),
        **regular_op('min', {'op': 'Minimum'}),
        **regular_op('div', {'op': 'Div', 'name': 'final_div'}),
        **const('add_const', float_array([3.0])),
        **const('min_const', float_array([6.0])),
        **const('div_const', float_array([6.0])),
        **result('result'),
    }

    edges = [('input', 'add', {'in': 0, 'out': 0}),
             ('add_const', 'add', {'in': 1, 'out': 0}),
             ('add', 'relu', {'in': 0, 'out': 0}),
             ('relu', 'min', {'in': 0, 'out': 0}),
             ('min_const', 'min', {'in': 1, 'out': 0}),
             ('min', 'div', {'in': 0, 'out': 0}),
             ('div_const', 'div', {'in': 1, 'out': 0}),
             ('div', 'result', {'in': 0, 'out': 0})]

    def test_hsigmoid_with_relu_div(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {})

        graph_ref = build_graph(ref_nodes, ref_edges)
        graph.stage = 'front'

        HSigmoidWithReluDiv().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)
        self.assertTrue(len(graph.get_op_nodes(name='final_div')) == 1 and
                        graph.get_op_nodes(name='final_div')[0].op == 'HSigmoid')
        self.assertTrue(graph.get_op_nodes(name='final_div')[0].out_nodes()[0].node == 'result')

    def test_hsigmoid_with_relu_div_wrong_constant(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {'add_const': {'value': float_array([0.00001])}})

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithReluDiv().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)

    def test_hsigmoid_with_relu_div_different_tensors(self):
        graph = build_graph_with_edge_attrs({
            **regular_op('input', {'type': 'Parameter'}),
            **regular_op('input_2', {'type': 'Parameter'}),
            **regular_op('add', {'op': 'Add'}),
            **regular_op('max', {'op': 'Maximum'}),
            **regular_op('min', {'op': 'Minimum'}),
            **regular_op('mul', {'op': 'Mul'}),
            **regular_op('mul_2', {'op': 'Mul', 'name': 'final_mul'}),
            **const('const_0', float_array([0.0])),
            **const('const_3', float_array([3.0])),
            **const('const_6', float_array([6.0])),
            **const('const_1_6', float_array([1.0 / 6.0])),
            **result('result'),
        }, [('input_2', 'mul', {'in': 1, 'out': 0}),
            ('input', 'add', {'in': 0, 'out': 0}),
            ('const_3', 'add', {'in': 1, 'out': 0}),
            ('add', 'max', {'in': 0, 'out': 0}),
            ('const_0', 'max', {'in': 1, 'out': 0}),
            ('max', 'min', {'in': 0, 'out': 0}),
            ('const_6', 'min', {'in': 1, 'out': 0}),
            ('min', 'mul', {'in': 0, 'out': 0}),
            ('mul', 'mul_2', {'in': 0, 'out': 0}),
            ('const_1_6', 'mul_2', {'in': 1, 'out': 0}),
            ('mul_2', 'result', {'in': 0, 'out': 0})])

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithReluDiv().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)


class HSigmoidWithReluMulTest(unittest.TestCase):
    nodes = {
        **regular_op('input', {'type': 'Parameter'}),
        **regular_op('add', {'op': 'Add'}),
        **regular_op('relu', {'op': 'ReLU'}),
        **regular_op('min', {'op': 'Minimum'}),
        **regular_op('mul', {'op': 'Mul', 'name': 'final_mul'}),
        **const('add_const', float_array([3.0])),
        **const('min_const', float_array([6.0])),
        **const('mul_const', float_array([1.0/6.0])),
        **result('result'),
    }

    edges = [('input', 'add', {'in': 0, 'out': 0}),
             ('add_const', 'add', {'in': 1, 'out': 0}),
             ('add', 'relu', {'in': 0, 'out': 0}),
             ('relu', 'min', {'in': 0, 'out': 0}),
             ('min_const', 'min', {'in': 1, 'out': 0}),
             ('min', 'mul', {'in': 0, 'out': 0}),
             ('mul_const', 'mul', {'in': 1, 'out': 0}),
             ('mul', 'result', {'in': 0, 'out': 0})]

    def test_hsigmoid_with_relu_mul(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {})

        graph_ref = build_graph(ref_nodes, ref_edges)
        graph.stage = 'front'

        HSigmoidWithReluMul().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)
        self.assertTrue(len(graph.get_op_nodes(name='final_mul')) == 1 and
                        graph.get_op_nodes(name='final_mul')[0].op == 'HSigmoid')
        self.assertTrue(graph.get_op_nodes(name='final_mul')[0].out_nodes()[0].node == 'result')

    def test_hsigmoid_with_relu_mul_wrong_constant(self):
        graph = build_graph_with_edge_attrs(self.nodes, self.edges, {'add_const': {'value': float_array([0.00001])}})

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithReluMul().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)

    def test_hsigmoid_with_relu_mul_different_tensors(self):
        graph = build_graph_with_edge_attrs({
            **regular_op('input', {'type': 'Parameter'}),
            **regular_op('input_2', {'type': 'Parameter'}),
            **regular_op('add', {'op': 'Add'}),
            **regular_op('max', {'op': 'Maximum'}),
            **regular_op('min', {'op': 'Minimum'}),
            **regular_op('mul', {'op': 'Mul'}),
            **regular_op('mul_2', {'op': 'Mul', 'name': 'final_mul'}),
            **const('const_0', float_array([0.0])),
            **const('const_3', float_array([3.0])),
            **const('const_6', float_array([6.0])),
            **const('const_1_6', float_array([1.0 / 6.0])),
            **result('result'),
        }, [('input_2', 'mul', {'in': 1, 'out': 0}),
            ('input', 'add', {'in': 0, 'out': 0}),
            ('const_3', 'add', {'in': 1, 'out': 0}),
            ('add', 'max', {'in': 0, 'out': 0}),
            ('const_0', 'max', {'in': 1, 'out': 0}),
            ('max', 'min', {'in': 0, 'out': 0}),
            ('const_6', 'min', {'in': 1, 'out': 0}),
            ('min', 'mul', {'in': 0, 'out': 0}),
            ('mul', 'mul_2', {'in': 0, 'out': 0}),
            ('const_1_6', 'mul_2', {'in': 1, 'out': 0}),
            ('mul_2', 'result', {'in': 0, 'out': 0})])

        graph_ref = graph.copy()
        graph.stage = 'front'

        HSigmoidWithReluMul().find_and_replace_pattern(graph)

        (flag, resp) = compare_graphs(graph, graph_ref, 'result')
        self.assertTrue(flag, resp)