import sys
import os

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

import torch
import infinicore
from framework import (
    BaseOperatorTest,
    TensorSpec,
    TestCase,
    GenericTestRunner,
    is_broadcast,
)

# Test cases format: (in_shape, in_strides_or_None, output_size_or_None)
# adaptive_avg_pool2d maps input HxW to target output size (h, w)

_TEST_CASES_DATA = [
    ((2, 3, 16, 16), None, (1, 1)),
    ((2, 4, 15, 17), (204, 51, 17, 1), (5, 6)),
    ((1, 8, 32, 32), None, (8, 8)),
    ((4, 2, 7, 9), (126, 63, 9, 1), (3, 4)),
    ((3, 3, 31, 29), None, (16, 15)),
    ((2, 8, 9, 11), (792, 99, 11, 1), (4, 5)),
]

_TOLERANCE_MAP = {
    infinicore.float16: {"atol": 1e-3, "rtol": 1e-2},
    infinicore.float32: {"atol": 1e-5, "rtol": 1e-4},
}

_TENSOR_DTYPES = [infinicore.float16, infinicore.float32]


def parse_test_cases():
    test_cases = []
    for data in _TEST_CASES_DATA:
        shape, strides, out_size = data
        for dtype in _TENSOR_DTYPES:
            tol = _TOLERANCE_MAP.get(dtype, {"atol": 1e-5, "rtol": 1e-3})
            in_spec = TensorSpec.from_tensor(shape, strides, dtype)

            kwargs = {"output_size": out_size}
            test_cases.append(
                TestCase(
                    inputs=[in_spec],
                    kwargs=kwargs,
                    output_spec=None,
                    comparison_target=None,
                    tolerance=tol,
                    description="AdaptiveAvgPool2d - OUT_OF_PLACE",
                )
            )

    return test_cases


class OpTest(BaseOperatorTest):
    """AdaptiveAvgPool2d operator test with simplified implementation"""

    def __init__(self):
        super().__init__("AdaptiveAvgPool2d")

    def get_test_cases(self):
        return parse_test_cases()

    def torch_operator(self, *args, **kwargs):
        return torch.nn.functional.adaptive_avg_pool2d(*args, **kwargs)

    # def infinicore_operator(self, *args, **kwargs):
    #     """InfiniCore implementation (operator not yet available)."""
    #     return infinicore.nn.functional.adaptive_avg_pool2d(*args, **kwargs)


def main():
    """Main entry point"""
    runner = GenericTestRunner(OpTest)
    runner.run_and_exit()


if __name__ == "__main__":
    main()
