#!/usr/bin/env python3

"""
Bifrost - Accessible Fediverse Client
A fully accessible ActivityPub client designed for screen reader users.
"""

import sys
import os
import argparse
import logging
from pathlib import Path

# Force unbuffered output
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 1)
sys.stderr = os.fdopen(sys.stderr.fileno(), 'w', 1)

# Add src directory to Python path
sys.path.insert(0, str(Path(__file__).parent / "src"))

from PySide6.QtWidgets import QApplication
from PySide6.QtCore import Qt
from main_window import MainWindow


class BifrostFormatter(logging.Formatter):
    """Custom formatter with format: message - severity - timestamp"""
    
    def format(self, record):
        # Format: message - severity - timestamp
        timestamp = self.formatTime(record, "%Y-%m-%d %H:%M:%S")
        return f"{record.getMessage()} - {record.levelname} - {timestamp}"


def setup_logging(debug_target=None):
    """Set up logging based on debug target"""
    logger = logging.getLogger('bifrost')
    logger.setLevel(logging.DEBUG)
    
    # Clear any existing handlers
    logger.handlers.clear()
    
    formatter = BifrostFormatter()
    
    if debug_target is None:
        # No debug mode - only show warnings and errors to console
        handler = logging.StreamHandler(sys.stderr)
        handler.setLevel(logging.WARNING)
        handler.setFormatter(formatter)
        logger.addHandler(handler)
    elif debug_target == 'console':
        # Debug to console
        handler = logging.StreamHandler(sys.stdout)
        handler.setLevel(logging.DEBUG)
        handler.setFormatter(formatter)
        logger.addHandler(handler)
    else:
        # Debug to file
        try:
            handler = logging.FileHandler(debug_target, mode='w')
            handler.setLevel(logging.DEBUG)
            handler.setFormatter(formatter)
            logger.addHandler(handler)
        except Exception as e:
            print(f"Error setting up file logging: {e}", file=sys.stderr)
            sys.exit(1)
    
    return logger


def parse_arguments():
    """Parse command line arguments"""
    parser = argparse.ArgumentParser(
        description="Bifrost - Accessible Fediverse Client",
        formatter_class=argparse.RawDescriptionHelpFormatter
    )
    
    parser.add_argument(
        '-d', '--debug',
        nargs='?',
        const='console',
        metavar='FILE',
        help='Enable debug logging. Use -d for console output or -d FILE for file output'
    )
    
    return parser.parse_args()


def main():
    """Main application entry point"""
    args = parse_arguments()
    
    # Set up logging
    logger = setup_logging(args.debug)
    
    logger.info("Bifrost application starting up")
    
    app = QApplication(sys.argv)
    app.setApplicationName("Bifrost")
    app.setApplicationDisplayName("Bifrost Fediverse Client")
    app.setApplicationVersion("1.0.0")
    app.setOrganizationName("Bifrost")
    app.setOrganizationDomain("bifrost.social")
    
    # High DPI scaling is enabled by default in newer Qt versions
    
    # Create and show main window
    logger.debug("Creating MainWindow")
    window = MainWindow()
    logger.debug("MainWindow created, showing window")
    window.show()
    logger.debug("MainWindow shown, starting event loop")
    
    # Run the application
    sys.exit(app.exec())


if __name__ == "__main__":
    main()