from PyQt6.QtWidgets import QWidget, QVBoxLayout, QComboBox, QLabel, QHBoxLayout
from PyQt6.QtCore import Qt
from app.core.main_manager import MainManager, NotificationType
from typing import Optional

class SettingsWindow(QWidget):
    def __init__(self, parent: Optional[QWidget] = None) -> None:
        super().__init__(parent)
        self.main_manager: MainManager = MainManager.get_instance()
        self.language_manager = self.main_manager.get_language_manager()
        self.settings_manager = self.main_manager.get_settings_manager()
        self.theme_manager = self.main_manager.get_theme_manager()

        self.observer_manager = self.main_manager.get_observer_manager()
        self.observer_manager.subscribe(NotificationType.LANGUAGE, self.update_language)
        
        # Type hints for UI elements
        self.language_layout: QHBoxLayout
        self.language_label: QLabel
        self.language_combo: QComboBox
        self.theme_layout: QHBoxLayout
        self.theme_label: QLabel
        self.theme_combo: QComboBox

        self.setup_ui()

    def setup_ui(self) -> None:
        layout: QVBoxLayout = QVBoxLayout(self)
        layout.setAlignment(Qt.AlignmentFlag.AlignTop)
        layout.setSpacing(20)
        layout.setContentsMargins(20, 20, 20, 20)

        layout.addStretch()

        self.language_layout = QHBoxLayout()
        # Paramètres de langue
        self.language_label = QLabel(self.language_manager.get_text("language"),self)
        self.language_label.setFixedWidth(120)  # Largeur fixe pour l'alignement
        self.language_layout.addWidget(self.language_label)

        self.language_combo = self.createLanguageSelector()
        self.language_layout.addWidget(self.language_combo)

        layout.addLayout(self.language_layout)

        layout.addStretch()

        # Paramètres de thème
        self.theme_layout = QHBoxLayout()

        self.theme_label = QLabel(self.language_manager.get_text("theme"), self)
        self.theme_label.setFixedWidth(120)  # Même largeur fixe pour l'alignement
        self.theme_layout.addWidget(self.theme_label)

        self.theme_combo = self.createThemeSelector()
        self.theme_layout.addWidget(self.theme_combo)

        layout.addLayout(self.theme_layout)
        
        layout.addStretch()

    def createLanguageSelector(self) -> QComboBox:
        combo: QComboBox = QComboBox()
        # Ajouter toutes les langues disponibles
        for lang_code, lang_data in self.language_manager.translations.items():
            combo.addItem(lang_data["lang_name"], lang_code)

        # Sélectionner la langue actuelle
        current_index = combo.findData(self.settings_manager.get_language())
        combo.setCurrentIndex(current_index)
        combo.currentIndexChanged.connect(self.change_language)

        return combo

    def createThemeSelector(self) -> QComboBox:
        combo: QComboBox = QComboBox()
        # Ajouter toutes les options de thème disponibles
        for theme in self.theme_manager.get_themes():
            combo.addItem(self.language_manager.get_text(theme.name+"_theme"), theme.name)

        # Sélectionner le thème actuel
        current_index = combo.findData(self.settings_manager.get_theme())
        combo.setCurrentIndex(current_index)
        combo.currentIndexChanged.connect(self.change_theme)
        
        return combo

    def change_language(self, index: int) -> None:
        self.settings_manager.set_language(self.language_combo.itemData(index))

    def change_theme(self, index: int) -> None:
        theme: str = self.theme_combo.itemData(index)
        self.settings_manager.set_theme(theme)

    def update_language(self) -> None:
        self.language_label.setText(self.language_manager.get_text("language"))
        self.theme_label.setText(self.language_manager.get_text("theme"))

        # Mettre à jour les textes dans la combo de thème
        for i in range(self.theme_combo.count()):
            self.theme_combo.setItemText(i, self.language_manager.get_text(self.theme_combo.itemData(i)+ "_theme"))