"""
EU-Utility Premium - Base Widget Components
============================================

Base widget classes and components for building custom widgets.
"""

from dataclasses import dataclass, field
from typing import Any, Dict, Optional, Callable
from PyQt6.QtWidgets import QWidget, QVBoxLayout, QFrame, QLabel
from PyQt6.QtCore import Qt


@dataclass
class WidgetConfig:
    """Configuration for a widget."""
    name: str = "Widget"
    description: str = ""
    refresh_interval: int = 1000  # ms
    size: tuple = (300, 200)
    position: tuple = (0, 0)
    settings: Dict[str, Any] = field(default_factory=dict)


class Widget(QFrame):
    """Base class for all dashboard widgets."""
    
    def __init__(self, config: Optional[WidgetConfig] = None, parent=None):
        super().__init__(parent)
        self.config = config or WidgetConfig()
        self._setup_ui()
    
    def _setup_ui(self):
        """Setup the widget UI. Override in subclasses."""
        self.setFrameStyle(QFrame.Shape.StyledPanel)
        self.layout = QVBoxLayout(self)
        self.layout.setContentsMargins(10, 10, 10, 10)
        
        # Default header
        self.header = QLabel(self.config.name)
        self.header.setStyleSheet("font-weight: bold; font-size: 14px;")
        self.layout.addWidget(self.header)
    
    def update_data(self, data: Any):
        """Update widget with new data. Override in subclasses."""
        pass
    
    def refresh(self):
        """Refresh widget content. Override in subclasses."""
        pass


class WidgetHeader(QFrame):
    """Header component for widgets."""
    
    def __init__(self, title: str = "", parent=None):
        super().__init__(parent)
        self.title = title
        self._setup_ui()
    
    def _setup_ui(self):
        self.layout = QVBoxLayout(self)
        self.label = QLabel(self.title)
        self.label.setStyleSheet("font-weight: bold;")
        self.layout.addWidget(self.label)


class WidgetContent(QFrame):
    """Content container for widgets."""
    
    def __init__(self, parent=None):
        super().__init__(parent)
        self.layout = QVBoxLayout(self)


# Import concrete widgets
from .dashboard_widget import DashboardWidget
from .metrics_card import MetricsCard, StatItem
from .chart_widget import ChartWidget, ChartType

__all__ = [
    'Widget',
    'WidgetConfig',
    'WidgetHeader',
    'WidgetContent',
    'DashboardWidget',
    'MetricsCard',
    'StatItem',
    'ChartWidget',
    'ChartType',
]