from __future__ import annotations

import logging

from PySide6.QtCore import QObject, Signal

from bedit_gui.services.application_logging import configure_logging
from bedit_gui.views.main_window import MainWindow
from bedit_gui.views.simulation_window import SimulationWindow
from bedit_gui.views.models import LogListModel


class _LogEmitter(QObject):
    message = Signal(str)


class _QtLogHandler(logging.Handler):
    def __init__(self, emitter: _LogEmitter) -> None:
        super().__init__()
        self._emitter = emitter

    def emit(self, record: logging.LogRecord) -> None:
        try:
            self._emitter.message.emit(self.format(record))
        except (RuntimeError, TypeError, ValueError):
            self.handleError(record)


class LogController(QObject):
    """Routes standard application log records into the log list view."""

    def __init__(
        self,
        window: MainWindow | SimulationWindow,
        level: int | str = logging.INFO,
    ) -> None:
        super().__init__(window)

        self.model = LogListModel()
        self.emitter = _LogEmitter(self)
        self.handler = _QtLogHandler(self.emitter)
        self.handler.setFormatter(
            logging.Formatter(
                "%(asctime)s  %(levelname)s  %(message)s",
                datefmt="%H:%M:%S",
            )
        )

        self.emitter.message.connect(self.model.append)
        self.model.rowsInserted.connect(window.ui.listView.scrollToBottom)
        window.ui.listView.setModel(self.model)
        configure_logging(self.handler, level)