from typing import Optional

from PySide6.QtWidgets import QWidget, QTabWidget, QVBoxLayout

from bigtext import BigText
from fulltabwidget import FullTabWidget
from logFileModel import LogFileModel
from raven.plugins.ravenlog.Tab import Tab
from ravenui import RavenUI
from settings import Settings


class Tabs(QWidget):
    def __init__(self, settings: Settings):
        super(Tabs, self).__init__()

        self.settings = settings

        self.tabs = QTabWidget()
        self.tabs.setTabsClosable(True)
        self.tabs.setMovable(True)
        self.tabs.tabCloseRequested.connect(self._close_tab)
        self.tabs.currentChanged.connect(self._current_tab_changed)

        self.layout = QVBoxLayout(self)
        self.layout.setContentsMargins(0, 0, 0, 0)

        self.layout.addWidget(self.tabs)

    def add_tab(self, tab: Tab):
        # if tab already exists then open it
        for tab_index in range(0, self.tabs.count()):
            widget: Tab = self.tabs.widget(tab_index)
            if widget.unique_id == tab.unique_id:
                self.tabs.setCurrentIndex(tab_index)
                return

        tab_index = self.tabs.addTab(tab, tab.title)
        self.tabs.setCurrentIndex(tab_index)

    def _current_tab_changed(self, tab_index: int):
        tab: Tab = self.tabs.widget(tab_index)
        if tab:
            RavenUI.update_window_title(tab.title)
            RavenUI.update_status_bar(tab.get_status_text())
        else:
            RavenUI.update_window_title("")
            RavenUI.update_status_bar("")

    def _close_tab(self, tab_index: int):
        full_tab: Tab = self.tabs.widget(tab_index)
        full_tab.destruct()
        self.tabs.removeTab(tab_index)

    def destruct(self):
        while self.tabs.count() > 0:
            self._close_tab(0)

    def _current_tab(self) -> int:
        return self.tabs.currentIndex()

    def current_file(self) -> Optional[str]:
        if self.tabs.currentIndex() < 0:
            return None

        tab: Tab = self.tabs.widget(self.tabs.currentIndex())
        return tab.get_file()