# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
import sys
import os

import warnings
import functools
import logging
from tqdm import tqdm


class TqdmLoggingHandler(logging.Handler):
    """Custom logging handler that directs log output to tqdm progress bar to avoid interference."""

    def __init__(self, level=logging.NOTSET):
        """Initialize the handler with an optional log level."""
        super().__init__(level)

    def emit(self, record):
        """Emit a log record. Messages are written to tqdm to ensure output in progress bars isn't corrupted."""
        try:
            msg = self.format(record)
            tqdm.write(msg)
        except Exception:
            self.handleError(record)


def set_log_level(level):
    """Set the logging level for the module's logger.

    Args:
        level (str or int): Can be the string name of the level (e.g., 'INFO') or the actual level (e.g., logging.INFO).
        OPTIONS: 'DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'
    """
    if isinstance(level, str):
        level = getattr(logging, level.upper(), logging.INFO)
    logger = logging.getLogger(__name__)
    logger.setLevel(level)


def _init_logger():
    """Initialize the logger specific for this module with custom settings and a Tqdm-based handler."""
    logger = logging.getLogger(__name__)
    handler = TqdmLoggingHandler()
    formatter = logging.Formatter(
        fmt="%(asctime)s [BitBLAS:%(levelname)s]: %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S",
    )
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    logger.propagate = False
    set_log_level("WARNING")


_init_logger()


def deprecated(reason):
    """
    This is a decorator which can be used to mark functions as deprecated.
    It will result in a warning being emitted when the function is used.
    """

    def decorator(func):

        @functools.wraps(func)
        def new_func(*args, **kwargs):
            warnings.warn(
                f"Call to deprecated function {func.__name__} ({reason}).",
                category=DeprecationWarning,
                stacklevel=2,
            )
            return func(*args, **kwargs)

        return new_func

    return decorator


logger = logging.getLogger(__name__)

# SETUP ENVIRONMENT VARIABLES
CUTLASS_NOT_FOUND_MESSAGE = ("CUTLASS is not installed or found in the expected path")
", which may lead to compilation bugs when utilize tilelang backend."
TL_TEMPLATE_NOT_FOUND_MESSAGE = ("TileLang is not installed or found in the expected path")
", which may lead to compilation bugs when utilize tilelang backend."

# Handle TVM_IMPORT_PYTHON_PATH to import tvm from the specified path
TVM_IMPORT_PYTHON_PATH = os.environ.get("TVM_IMPORT_PYTHON_PATH", None)

if TVM_IMPORT_PYTHON_PATH is not None:
    os.environ["PYTHONPATH"] = (TVM_IMPORT_PYTHON_PATH + ":" + os.environ.get("PYTHONPATH", ""))
    sys.path.insert(0, TVM_IMPORT_PYTHON_PATH + "/python")
else:
    # remove the existing tvm path in PYTHONPATH
    def remove_tvm_path(path):
        return "tvm" in path

    # installed 3rdparty tvm
    install_tvm_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), "3rdparty", "tvm")
    if os.path.exists(install_tvm_path) and install_tvm_path not in sys.path:
        os.environ["PYTHONPATH"] = ":".join(
            filter(remove_tvm_path,
                   os.environ.get("PYTHONPATH", "").split(":")))
        sys.path = [path for path in sys.path if not remove_tvm_path(path)]

        os.environ["PYTHONPATH"] = (
            install_tvm_path + "/python:" + os.environ.get("PYTHONPATH", ""))
        sys.path.insert(0, install_tvm_path + "/python")

    # developed 3rdparty tvm
    develop_tvm_path = os.path.join(
        os.path.dirname(os.path.abspath(__file__)), "..", "3rdparty", "tvm")
    if os.path.exists(develop_tvm_path) and develop_tvm_path not in sys.path:
        os.environ["PYTHONPATH"] = ":".join(
            filter(remove_tvm_path,
                   os.environ.get("PYTHONPATH", "").split(":")))
        sys.path = [path for path in sys.path if not remove_tvm_path(path)]
        os.environ["PYTHONPATH"] = (
            develop_tvm_path + "/python:" + os.environ.get("PYTHONPATH", ""))
        sys.path.insert(0, develop_tvm_path + "/python")

if os.environ.get("TL_CUTLASS_PATH", None) is None:
    install_cutlass_path = os.path.join(
        os.path.dirname(os.path.abspath(__file__)), "3rdparty", "cutlass")
    develop_cutlass_path = os.path.join(
        os.path.dirname(os.path.abspath(__file__)), "..", "3rdparty", "cutlass")
    if os.path.exists(install_cutlass_path):
        os.environ["TL_CUTLASS_PATH"] = install_cutlass_path + "/include"
    elif (os.path.exists(develop_cutlass_path) and develop_cutlass_path not in sys.path):
        os.environ["TL_CUTLASS_PATH"] = develop_cutlass_path + "/include"
    else:
        logger.warning(CUTLASS_NOT_FOUND_MESSAGE)

import tvm as tvm  # noqa: E402
from .base import (
    TileDevice,  # noqa: F401
    fast_tune,  # noqa: F401
    BlockInfo,  # noqa: F401
    IterInfo,  # noqa: F401
    ScheduleRule,  # noqa: F401
    normalize_prim_func,  # noqa: F401
    try_inline,  # noqa: F401
    try_inline_contiguous_spatial,  # noqa: F401
)
from .relax import (
    ApplyDefaultSchedule,  # noqa: F401
    ApplyFastTuning,  # noqa: F401
)
from .utils import auto_detect_nvidia_target, apply_transform_on_input  # noqa: F401
from .ops.general_matmul import MatmulConfig, Matmul  # noqa: F401
from .ops.general_matmul_splitk import MatmulConfigWithSplitK, MatmulWithSplitK  # noqa: F401
from .ops.general_flashatten import FlashAttenConfig, FlashAtten  # noqa: F401
from .module import Linear  # noqa: F401

__version__ = "0.1.0"