"""
RGB Preview Panel

Panel for displaying RGB camera feed (coming soon feature).
"""

from PyQt5.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QLabel, QSizePolicy
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QFont, QPainter, QColor, QPen

from ui.widgets.panel_header import PanelHeader
from ui.widgets.coming_soon_overlay import ComingSoonOverlay


class RGBPreviewPanel(QWidget):
    """
    Panel for RGB camera preview.
    Currently shows "COMING SOON" placeholder for future camera integration.
    """
    
    def __init__(self, parent=None):
        super().__init__(parent)
        self.init_ui()
        
    def init_ui(self):
        """Initialize the panel UI."""
        # Set size policy to expand equally
        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        
        layout = QVBoxLayout(self)
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setSpacing(0)
        
        # Main panel container with card styling
        self.setStyleSheet("""
            QWidget {
                background-color: white;
                border: 1px solid #ddd;
            }
        """)
        
        # Header
        header = QWidget()
        header.setFixedHeight(25)
        header.setStyleSheet("background-color: #3498db;")
        header_layout = QHBoxLayout(header)
        header_layout.setContentsMargins(10, 0, 10, 0)
        header_layout.setSpacing(0)
        
        title = QLabel("RGB Preview")
        title.setStyleSheet("color: white; font-weight: bold; font-size: 16px;")
        
        status_indicator = QWidget()
        status_indicator.setFixedSize(10, 10)
        status_indicator.setStyleSheet("background-color: #27ae60; border-radius: 5px;")
        
        header_layout.addWidget(title)
        header_layout.addStretch()
        header_layout.addWidget(status_indicator)
        
        # Content area
        content = QWidget()
        content.setMinimumSize(250, 250)
        # content.setMaximumSize(400, 400)
        content.setStyleSheet("""
            background-color: #2c3e50;
            border: 1px solid #34495e;
            border-top: none;
        """)
        
        content_layout = QVBoxLayout(content)
        content_layout.setAlignment(Qt.AlignCenter)
        content_layout.setSpacing(5)
        
        # Main text container
        text_container = QWidget()
        text_layout = QVBoxLayout(text_container)
        text_layout.setAlignment(Qt.AlignCenter)
        text_layout.setSpacing(2)
        
        # Live RGB Feed text
        feed_label = QLabel("RGB Live Feed")
        feed_label.setFont(QFont("Arial", 14))
        feed_label.setStyleSheet("color: #bdc3c7;")
        feed_label.setAlignment(Qt.AlignCenter)
        text_layout.addWidget(feed_label)
        
        # Resolution info
        res_label = QLabel("1920x1080 @ 30fps\n(Coming soon)")
        res_label.setFont(QFont("Arial", 11))
        res_label.setStyleSheet("color: #7f8c8d;")
        res_label.setAlignment(Qt.AlignCenter)
        text_layout.addWidget(res_label)
        
        content_layout.addWidget(text_container)
        
        layout.addWidget(header)
        layout.addWidget(content, 1)
        
        # Tooltip
        self.setToolTip("Live RGB camera feed - Coming with hardware integration")


class CrosshairPreview(QWidget):
    """Widget showing crosshair placeholder for camera targeting."""
    
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setAttribute(Qt.WA_TransparentForMouseEvents)
        
    def paintEvent(self, event):
        """Draw crosshair overlay."""
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        
        # Draw crosshair
        pen = QPen(QColor("#e74c3c"), 2)
        painter.setPen(pen)
        
        center_x = self.width() // 2
        center_y = self.height() // 2
        
        # Horizontal line
        painter.drawLine(center_x - 20, center_y, center_x + 20, center_y)
        
        # Vertical line
        painter.drawLine(center_x, center_y - 20, center_x, center_y + 20)
        
        # Center circle
        painter.drawEllipse(center_x - 3, center_y - 3, 6, 6)