# C:\PYTHON\MyICR_Suite\app\features\navigation\__init__.py

import logging
import app 
from pathlib import Path
from PyQt6.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QLabel, QFrame, QSizePolicy
from PyQt6.QtCore import Qt, pyqtSignal
from PyQt6.QtGui import QPixmap

from .navigation_panel import NavigationPanel

logger = logging.getLogger(__name__)

class NavigationPage(QWidget):
    section_selected = pyqtSignal(str)

    def __init__(self, main_window):
        super().__init__()
        self.main_window = main_window
        self.theme = main_window.theme
        self.init_ui()
        logger.info("🧭 NavigationPage (layout a 2 colonne) creata.")

    def init_ui(self):
        page_layout = QHBoxLayout(self)
        page_layout.setContentsMargins(0, 0, 0, 0)
        page_layout.setSpacing(0)

        nav_container = QFrame()
        nav_width = self.theme.get('components', {}).get('nav_panel_width', 280)
        nav_container.setFixedWidth(nav_width)
        
        nav_container.setStyleSheet(
            f"background-color: {self.theme.get('background_panel', '#F3F2F1')};"
            f"border-right: 1px solid {self.theme.get('border_dark', '#D2D0CE')};"
        )
        
        nav_layout = QVBoxLayout(nav_container)
        nav_layout.setContentsMargins(0, 0, 0, 0)
        self.navigation_panel = NavigationPanel(theme=self.theme)
        
        nav_structure = {
            "📊 Dashboards": {
                "children": {
                    "Analisi Tipologie Emesso": {"id": "dash_tipologie"},
                    "Analisi Pivot Emesso": {"id": "dash_em_pivot"},
                    "Analisi Diritti": {"id": "dash_diritti"}
                }
            },
            "🎬 Applicazioni": {
                "children": {
                    "MediaTrack": {"id": "mediatrack"},
                    "Linker": {"id": "linker"}
                }
            }
        }
        self.navigation_panel.populate_tree(nav_structure)
        nav_layout.addWidget(self.navigation_panel)
             
        welcome_area = QWidget()
        welcome_layout = QVBoxLayout(welcome_area)
        welcome_content_widget = QWidget()
        welcome_content_widget.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding)
        welcome_content_layout = QVBoxLayout(welcome_content_widget)
        welcome_content_layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
        welcome_content_layout.setSpacing(20)
        try:
            base_path = Path(__file__).resolve().parent.parent.parent
            image_path = base_path / "assets" / "images" / "splash_background.png"
            if not image_path.exists(): raise FileNotFoundError("Immagine di benvenuto non trovata")
            image_label = QLabel(parent=welcome_content_widget)
            pixmap = QPixmap(str(image_path))
            if pixmap.isNull(): raise ValueError("Immagine corrotta o non supportata")
            image_label.setPixmap(pixmap)
            image_label.setScaledContents(True)
            image_label.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding)
            image_label.setMaximumSize(800, 450)
            welcome_text = QLabel(
                "<h2>Benvenuto in MyICR Suite</h2>"
                "<p style='color: #605E5C;'>Seleziona una voce dal pannello di navigazione per iniziare.</p>",
                parent=welcome_content_widget
            )
            welcome_text.setAlignment(Qt.AlignmentFlag.AlignCenter)
            welcome_content_layout.addWidget(image_label)
            welcome_content_layout.addWidget(welcome_text)
        except Exception as e:
            logger.warning(f"Impossibile caricare l'immagine di benvenuto ({e}). Mostro testo di fallback.")
            fallback_label = QLabel("<h2>Benvenuto in MyICR Suite</h2><p>Seleziona una voce dal pannello.</p>", alignment=Qt.AlignmentFlag.AlignCenter)
            welcome_content_layout.addWidget(fallback_label)
        welcome_layout.addStretch(1)
        welcome_layout.addWidget(welcome_content_widget)
        welcome_layout.addStretch(1)
        page_layout.addWidget(nav_container)
        page_layout.addWidget(welcome_area, 1)
        self.navigation_panel.section_selected.connect(self.section_selected.emit)

    def page_activated(self):
        logger.info("NavigationPage attivata.")
        pass

    def page_deactivated(self):
        logger.info("NavigationPage disattivata.")
        pass