"""
Mode Toggle Widget

Toggle button widget for switching between modes (LIVE/FILE).
"""

from PyQt5.QtWidgets import QWidget, QHBoxLayout, QPushButton
from PyQt5.QtCore import Qt, pyqtSignal
from PyQt5.QtGui import QFont


class ModeToggle(QWidget):
    """
    Toggle widget for mode selection.
    
    Signals:
        mode_changed: Emitted when mode is changed (str: 'live' or 'file')
    """
    
    mode_changed = pyqtSignal(str)
    
    def __init__(self, parent=None):
        super().__init__(parent)
        self.current_mode = "file"
        self.init_ui()
        
    def init_ui(self):
        """Initialize the toggle UI."""
        layout = QHBoxLayout(self)
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setSpacing(0)
        
        # Container style to resemble a switch/segment control
        self.setStyleSheet("""
            QWidget#ModeToggleRoot {
                background-color: #ecf0f1;
                border: 1px solid #bdc3c7;
                border-radius: 14px;
            }
        """)
        self.setObjectName("ModeToggleRoot")
        
        # LIVE button
        self.live_btn = QPushButton("LIVE")
        self.live_btn.setFont(QFont("Arial", 9))
        self.live_btn.setFixedSize(80, 28)
        self.live_btn.setCheckable(True)
        self.live_btn.clicked.connect(lambda: self.set_mode("live"))
        layout.addWidget(self.live_btn)
        
        # FILE button
        self.file_btn = QPushButton("FILE")
        self.file_btn.setFont(QFont("Arial", 9))
        self.file_btn.setFixedSize(80, 28)
        self.file_btn.setCheckable(True)
        self.file_btn.setChecked(True)
        self.file_btn.clicked.connect(lambda: self.set_mode("file"))
        layout.addWidget(self.file_btn)
        
        self._update_styles()
        
        # Disable LIVE mode initially (coming soon)
        self.live_btn.setEnabled(False)
        self.live_btn.setToolTip("Live audio streaming - Coming in future update")
        
    def set_mode(self, mode: str):
        """
        Set the current mode.
        
        Args:
            mode: 'live' or 'file'
        """
        self.current_mode = mode
        self.live_btn.setChecked(mode == "live")
        self.file_btn.setChecked(mode == "file")
        self._update_styles()
        self.mode_changed.emit(mode)
        
    def _update_styles(self):
        """Update button styles based on selection."""
        active_style = """
            QPushButton {{
                background-color: #3498db;
                border: none;
                border-radius: 14px;
                color: white;
                font-weight: bold;
                padding: 4px 10px;
            }}
        """
        
        inactive_style = """
            QPushButton {{
                background-color: transparent;
                border: none;
                border-radius: 14px;
                color: #2c3e50;
                padding: 4px 10px;
            }}
            QPushButton:hover {{
                background-color: #d5dbdb;
            }}
        """
        
        disabled_style = """
            QPushButton:disabled {{
                background-color: #95a5a6;
                border: 1px solid #7f8c8d;
                color: #ecf0f1;
            }}
        """
        
        self.live_btn.setStyleSheet(
            (active_style if self.current_mode == "live" else inactive_style) + disabled_style
        )
        self.file_btn.setStyleSheet(
            active_style if self.current_mode == "file" else inactive_style
        )