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import logging
from datetime import datetime
from logging import Handler, LogRecord
from pathlib import Path
from types import ModuleType
from typing import ClassVar, Iterable, List, Optional, Type, Union

from pip._vendor.rich._null_file import NullFile

from . import get_console
from ._log_render import FormatTimeCallable, LogRender
from .console import Console, ConsoleRenderable
from .highlighter import Highlighter, ReprHighlighter
from .text import Text
from .traceback import Traceback


class RichHandler(Handler):
    """A logging handler that renders output with Rich. The time / level / message and file are displayed in columns.
    The level is color coded, and the message is syntax highlighted.

    Note:
        Be careful when enabling console markup in log messages if you have configured logging for libraries not
        under your control. If a dependency writes messages containing square brackets, it may not produce the intended output.

    Args:
        level (Union[int, str], optional): Log level. Defaults to logging.NOTSET.
        console (:class:`~rich.console.Console`, optional): Optional console instance to write logs.
            Default will use a global console instance writing to stdout.
        show_time (bool, optional): Show a column for the time. Defaults to True.
        omit_repeated_times (bool, optional): Omit repetition of the same time. Defaults to True.
        show_level (bool, optional): Show a column for the level. Defaults to True.
        show_path (bool, optional): Show the path to the original log call. Defaults to True.
        enable_link_path (bool, optional): Enable terminal link of path column to file. Defaults to True.
        highlighter (Highlighter, optional): Highlighter to style log messages, or None to use ReprHighlighter. Defaults to None.
        markup (bool, optional): Enable console markup in log messages. Defaults to False.
        rich_tracebacks (bool, optional): Enable rich tracebacks with syntax highlighting and formatting. Defaults to False.
        tracebacks_width (Optional[int], optional): Number of characters used to render tracebacks, or None for full width. Defaults to None.
        tracebacks_code_width (int, optional): Number of code characters used to render tracebacks, or None for full width. Defaults to 88.
        tracebacks_extra_lines (int, optional): Additional lines of code to render tracebacks, or None for full width. Defaults to None.
        tracebacks_theme (str, optional): Override pygments theme used in traceback.
        tracebacks_word_wrap (bool, optional): Enable word wrapping of long tracebacks lines. Defaults to True.
        tracebacks_show_locals (bool, optional): Enable display of locals in tracebacks. Defaults to False.
        tracebacks_suppress (Sequence[Union[str, ModuleType]]): Optional sequence of modules or paths to exclude from traceback.
        tracebacks_max_frames (int, optional): Optional maximum number of frames returned by traceback.
        locals_max_length (int, optional): Maximum length of containers before abbreviating, or None for no abbreviation.
            Defaults to 10.
        locals_max_string (int, optional): Maximum length of string before truncating, or None to disable. Defaults to 80.
        log_time_format (Union[str, TimeFormatterCallable], optional): If ``log_time`` is enabled, either string for strftime or callable that formats the time. Defaults to "[%x %X] ".
        keywords (List[str], optional): List of words to highlight instead of ``RichHandler.KEYWORDS``.
    """

    KEYWORDS: ClassVar[Optional[List[str]]] = [
        "GET",
        "POST",
        "HEAD",
        "PUT",
        "DELETE",
        "OPTIONS",
        "TRACE",
        "PATCH",
    ]
    HIGHLIGHTER_CLASS: ClassVar[Type[Highlighter]] = ReprHighlighter

    def __init__(
        self,
        level: Union[int, str] = logging.NOTSET,
        console: Optional[Console] = None,
        *,
        show_time: bool = True,
        omit_repeated_times: bool = True,
        show_level: bool = True,
        show_path: bool = True,
        enable_link_path: bool = True,
        highlighter: Optional[Highlighter] = None,
        markup: bool = False,
        rich_tracebacks: bool = False,
        tracebacks_width: Optional[int] = None,
        tracebacks_code_width: int = 88,
        tracebacks_extra_lines: int = 3,
        tracebacks_theme: Optional[str] = None,
        tracebacks_word_wrap: bool = True,
        tracebacks_show_locals: bool = False,
        tracebacks_suppress: Iterable[Union[str, ModuleType]] = (),
        tracebacks_max_frames: int = 100,
        locals_max_length: int = 10,
        locals_max_string: int = 80,
        log_time_format: Union[str, FormatTimeCallable] = "[%x %X]",
        keywords: Optional[List[str]] = None,
    ) -> None:
        super().__init__(level=level)
        self.console = console or get_console()
        self.highlighter = highlighter or self.HIGHLIGHTER_CLASS()
        self._log_render = LogRender(
            show_time=show_time,
            show_level=show_level,
            show_path=show_path,
            time_format=log_time_format,
            omit_repeated_times=omit_repeated_times,
            level_width=None,
        )
        self.enable_link_path = enable_link_path
        self.markup = markup
        self.rich_tracebacks = rich_tracebacks
        self.tracebacks_width = tracebacks_width
        self.tracebacks_extra_lines = tracebacks_extra_lines
        self.tracebacks_theme = tracebacks_theme
        self.tracebacks_word_wrap = tracebacks_word_wrap
        self.tracebacks_show_locals = tracebacks_show_locals
        self.tracebacks_suppress = tracebacks_suppress
        self.tracebacks_max_frames = tracebacks_max_frames
        self.tracebacks_code_width = tracebacks_code_width
        self.locals_max_length = locals_max_length
        self.locals_max_string = locals_max_string
        self.keywords = keywords

    def get_level_text(self, record: LogRecord) -> Text:
        """Get the level name from the record.

        Args:
            record (LogRecord): LogRecord instance.

        Returns:
            Text: A tuple of the style and level name.
        """
        level_name = record.levelname
        level_text = Text.styled(
            level_name.ljust(8), f"logging.level.{level_name.lower()}"
        )
        return level_text

    def emit(self, record: LogRecord) -> None:
        """Invoked by logging."""
        message = self.format(record)
        traceback = None
        if (
            self.rich_tracebacks
            and record.exc_info
            and record.exc_info != (None, None, None)
        ):
            exc_type, exc_value, exc_traceback = record.exc_info
            assert exc_type is not None
            assert exc_value is not None
            traceback = Traceback.from_exception(
                exc_type,
                exc_value,
                exc_traceback,
                width=self.tracebacks_width,
                code_width=self.tracebacks_code_width,
                extra_lines=self.tracebacks_extra_lines,
                theme=self.tracebacks_theme,
                word_wrap=self.tracebacks_word_wrap,
                show_locals=self.tracebacks_show_locals,
                locals_max_length=self.locals_max_length,
                locals_max_string=self.locals_max_string,
                suppress=self.tracebacks_suppress,
                max_frames=self.tracebacks_max_frames,
            )
            message = record.getMessage()
            if self.formatter:
                record.message = record.getMessage()
                formatter = self.formatter
                if hasattr(formatter, "usesTime") and formatter.usesTime():
                    record.asctime = formatter.formatTime(record, formatter.datefmt)
                message = formatter.formatMessage(record)

        message_renderable = self.render_message(record, message)
        log_renderable = self.render(
            record=record, traceback=traceback, message_renderable=message_renderable
        )
        if isinstance(self.console.file, NullFile):
            # Handles pythonw, where stdout/stderr are null, and we return NullFile
            # instance from Console.file. In this case, we still want to make a log record
            # even though we won't be writing anything to a file.
            self.handleError(record)
        else:
            try:
                self.console.print(log_renderable)
            except Exception:
                self.handleError(record)

    def render_message(self, record: LogRecord, message: str) -> "ConsoleRenderable":
        """Render message text in to Text.

        Args:
            record (LogRecord): logging Record.
            message (str): String containing log message.

        Returns:
            ConsoleRenderable: Renderable to display log message.
        """
        use_markup = getattr(record, "markup", self.markup)
        message_text = Text.from_markup(message) if use_markup else Text(message)

        highlighter = getattr(record, "highlighter", self.highlighter)
        if highlighter:
            message_text = highlighter(message_text)

        if self.keywords is None:
            self.keywords = self.KEYWORDS

        if self.keywords:
            message_text.highlight_words(self.keywords, "logging.keyword")

        return message_text

    def render(
        self,
        *,
        record: LogRecord,
        traceback: Optional[Traceback],
        message_renderable: "ConsoleRenderable",
    ) -> "ConsoleRenderable":
        """Render log for display.

        Args:
            record (LogRecord): logging Record.
            traceback (Optional[Traceback]): Traceback instance or None for no Traceback.
            message_renderable (ConsoleRenderable): Renderable (typically Text) containing log message contents.

        Returns:
            ConsoleRenderable: Renderable to display log.
        """
        path = Path(record.pathname).name
        level = self.get_level_text(record)
        time_format = None if self.formatter is None else self.formatter.datefmt
        log_time = datetime.fromtimestamp(record.created)

        log_renderable = self._log_render(
            self.console,
            [message_renderable] if not traceback else [message_renderable, traceback],
            log_time=log_time,
            time_format=time_format,
            level=level,
            path=path,
            line_no=record.lineno,
            link_path=record.pathname if self.enable_link_path else None,
        )
        return log_renderable


if __name__ == "__main__":  # pragma: no cover
    from time import sleep

    FORMAT = "%(message)s"
    # FORMAT = "%(asctime)-15s - %(levelname)s - %(message)s"
    logging.basicConfig(
        level="NOTSET",
        format=FORMAT,
        datefmt="[%X]",
        handlers=[RichHandler(rich_tracebacks=True, tracebacks_show_locals=True)],
    )
    log = logging.getLogger("rich")

    log.info("Server starting...")
    log.info("Listening on http://127.0.0.1:8080")
    sleep(1)

    log.info("GET /index.html 200 1298")
    log.info("GET /imgs/backgrounds/back1.jpg 200 54386")
    log.info("GET /css/styles.css 200 54386")
    log.warning("GET /favicon.ico 404 242")
    sleep(1)

    log.debug(
        "JSONRPC request\n--> %r\n<-- %r",
        {
            "version": "1.1",
            "method": "confirmFruitPurchase",
            "params": [["apple", "orange", "mangoes", "pomelo"], 1.123],
            "id": "194521489",
        },
        {"version": "1.1", "result": True, "error": None, "id": "194521489"},
    )
    log.debug(
        "Loading configuration file /adasd/asdasd/qeqwe/qwrqwrqwr/sdgsdgsdg/werwerwer/dfgerert/ertertert/ertetert/werwerwer"
    )
    log.error("Unable to find 'pomelo' in database!")
    log.info("POST /jsonrpc/ 200 65532")
    log.info("POST /admin/ 401 42234")
    log.warning("password was rejected for admin site.")

    def divide() -> None:
        number = 1
        divisor = 0
        foos = ["foo"] * 100
        log.debug("in divide")
        try:
            number / divisor
        except:
            log.exception("An error of some kind occurred!")

    divide()
    sleep(1)
    log.critical("Out of memory!")
    log.info("Server exited with code=-1")
    log.info("[bold]EXITING...[/bold]", extra=dict(markup=True))