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"""Arm(R) Ethos(TM)-N integration pooling tests"""

import numpy as np
import tvm
from tvm import relay
from tvm.testing import requires_ethosn
from . import infrastructure as tei


def _get_model(shape, typef, sizes, strides, pads, layout, dtype):
    """Return a model and any parameters it may have"""
    req = relay.var("a", shape=shape, dtype=dtype)
    if typef == relay.nn.avg_pool2d:
        req = relay.cast(req, "int32")
    req = typef(req, pool_size=sizes, strides=strides, padding=pads, ceil_mode=True, layout=layout)
    if typef == relay.nn.avg_pool2d:
        req = relay.cast(req, dtype)
    return req


@requires_ethosn
def test_pooling():
    trials = [
        ((1, 8, 8, 8), relay.nn.max_pool2d, (2, 2), (2, 2), (0, 0, 0, 0), "NHWC"),
        ((1, 9, 9, 9), relay.nn.max_pool2d, (2, 2), (2, 2), (0, 0, 1, 1), "NHWC"),
        ((1, 9, 9, 9), relay.nn.max_pool2d, (3, 3), (2, 2), (0, 0, 0, 0), "NHWC"),
        ((1, 8, 8, 8), relay.nn.max_pool2d, (3, 3), (2, 2), (0, 0, 1, 1), "NHWC"),
        ((1, 8, 8, 8), relay.nn.avg_pool2d, (3, 3), (1, 1), (1, 1, 1, 1), "NHWC"),
    ]

    for shape, typef, size, stride, pad, layout in trials:
        inputs = {
            "a": tvm.nd.array(np.random.randint(low=0, high=255, size=shape, dtype="uint8")),
        }
        outputs = []
        model = _get_model(shape, typef, size, stride, pad, layout, "uint8")
        for npu in [False, True]:
            mod = tei.make_module(model, {})
            outputs.append(tei.build_and_run(mod, inputs, 1, {}, npu=npu))

        tei.verify(outputs, 1)


@requires_ethosn
def test_pooling_failure():
    trials = [
        (
            (2, 8, 8, 8),
            relay.nn.max_pool2d,
            (2, 2),
            (2, 2),
            (0, 0, 0, 0),
            "NHWC",
            "uint8",
            "batch size=2, batch size must = 1",
        ),
        (
            (1, 8, 8, 8),
            relay.nn.max_pool2d,
            (2, 2),
            (2, 2),
            (0, 0, 0, 0),
            "NHWC",
            "int8",
            "dtype='int8', dtype must be either uint8 or int32",
        ),
        (
            (1, 8, 8, 8),
            relay.nn.max_pool2d,
            (2, 2),
            (2, 2),
            (0, 0, 0, 0),
            "NCHW",
            "uint8",
            "data format=NCHW, data format must = NHWC",
        ),
        (
            (1, 8, 8, 8),
            relay.nn.max_pool2d,
            (2, 2),
            (2, 2, 2),
            (0, 0, 0, 0),
            "NHWC",
            "uint8",
            "stride size=3, stride size must = 2",
        ),
        (
            (1, 8, 8, 8),
            relay.nn.max_pool2d,
            (2, 2, 2),
            (2, 2),
            (0, 0, 0, 0),
            "NHWC",
            "uint8",
            "dimensions=3, dimensions must = 2",
        ),
    ]

    for shape, typef, size, stride, pad, layout, dtype, err_msg in trials:
        model = _get_model(shape, typef, size, stride, pad, layout, dtype)
        mod = tei.make_ethosn_partition(model)
        tei.test_error(mod, {}, err_msg)