# Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license

# For licensing see accompanying LICENSE file.
# Copyright (C) 2024 Apple Inc. All Rights Reserved.

from __future__ import annotations

import os
import sys
import time
import traceback

text_colors = {
    "logs": "\033[34m",  # 033 is the escape code and 34 is the color code
    "info": "\033[32m",
    "warning": "\033[33m",
    "debug": "\033[93m",
    "error": "\033[31m",
    "bold": "\033[1m",
    "end_color": "\033[0m",
    "light_red": "\033[36m",
}


def get_curr_time_stamp() -> str:
    return time.strftime("%Y-%m-%d %H:%M:%S")


def error(message: str) -> None:
    time_stamp = get_curr_time_stamp()
    error_str = text_colors["error"] + text_colors["bold"] + "ERROR  " + text_colors["end_color"]

    # exiting with code -1 does not tell any information about the error (e.g., NaN encountered in the loss).
    # For more descriptive error messages, we replace exit(-1) with sys.exit(ERROR_MESSAGE).
    # This allows us to handle specific exceptions in the tests.

    # print("{} - {} - {}".format(time_stamp, error_str, message), flush=True)
    # print("{} - {} - {}".format(time_stamp, error_str, "Exiting!!!"), flush=True)
    # exit(-1)

    if sys.exc_info()[0] is None:
        traceback.print_stack()
    else:
        traceback.print_exc()
    sys.exit(f"{time_stamp} - {error_str} - {message}. Exiting!!!")


def color_text(in_text: str) -> str:
    return text_colors["light_red"] + in_text + text_colors["end_color"]


def log(message: str, end="\n") -> None:
    time_stamp = get_curr_time_stamp()
    log_str = text_colors["logs"] + text_colors["bold"] + "LOGS   " + text_colors["end_color"]
    print(f"{time_stamp} - {log_str} - {message}", end=end)


def warning(message: str | Warning) -> None:
    if isinstance(message, Warning):
        message = f"{type(message).__name__}({','.join(map(repr, message.args))}"

    time_stamp = get_curr_time_stamp()
    warn_str = text_colors["warning"] + text_colors["bold"] + "WARNING" + text_colors["end_color"]
    print(f"{time_stamp} - {warn_str} - {message}")


def ignore_exception_with_warning(message: str) -> None:
    """After catching a tolerable exception E1 (e.g. when Model.forward() fails during profiling with try-catch, it'll
    be helpful to log the exception for future investigation. But printing the error stack trace, as is, could be
    confusing when an uncaught (non-tolerable) exception "E2" raises down the road. Then, the log will contain two
    stack traces for E1, E2. When looking for errors in logs, users should look for E2, but they may find E1.

    This function appends "(WARNING)" at the end of all lines of the E1 traceback, so that the user can distinguish E1
    from uncaught exception E2.

    Args:
        message: Extra explanation and context for debugging. (Note: the exception obj will be automatically fetched
            from python. No need to pass it as an argument or as message)
    """
    warning(f"{message}:\n{traceback.format_exc()}".replace("\n", "\n(WARNING)"))


def info(message: str, print_line: bool | None = False) -> None:
    time_stamp = get_curr_time_stamp()
    info_str = text_colors["info"] + text_colors["bold"] + "INFO   " + text_colors["end_color"]
    print(f"{time_stamp} - {info_str} - {message}")
    if print_line:
        double_dash_line(dashes=150)


def debug(message: str) -> None:
    time_stamp = get_curr_time_stamp()
    log_str = text_colors["debug"] + text_colors["bold"] + "DEBUG   " + text_colors["end_color"]
    print(f"{time_stamp} - {log_str} - {message}")


def double_dash_line(dashes: int | None = 75) -> None:
    print(text_colors["error"] + "=" * dashes + text_colors["end_color"])


def singe_dash_line(dashes: int | None = 67) -> None:
    print("-" * dashes)


def print_header(header: str) -> None:
    double_dash_line()
    print(text_colors["info"] + text_colors["bold"] + "=" * 50 + str(header) + text_colors["end_color"])
    double_dash_line()


def print_header_minor(header: str) -> None:
    print(text_colors["warning"] + text_colors["bold"] + "=" * 25 + str(header) + text_colors["end_color"])


def disable_printing():
    sys.stdout = open(os.devnull, "w")


def enable_printing():
    sys.stdout = sys.__stdout__
