"""
Main CLI coordination and entry point.
"""

import argparse
import sys

from .base import NimbusFlowCLI, CLIError
from .commands import (
    # Member commands
    cmd_members_list, cmd_members_show, setup_members_parser,
    # Schedule commands
    cmd_schedules_list, cmd_schedules_show, cmd_schedules_accept,
    cmd_schedules_decline, setup_schedules_parser,
    # Service commands
    cmd_services_list, setup_services_parser,
)
from .interactive import run_interactive_mode


def setup_parser() -> argparse.ArgumentParser:
    """Set up the command-line argument parser."""
    parser = argparse.ArgumentParser(
        prog="python -m backend.cli",
        description="NimbusFlow CLI - Manage the scheduling system",
        formatter_class=argparse.RawDescriptionHelpFormatter
    )
    
    subparsers = parser.add_subparsers(dest="command", help="Available commands")
    
    # Set up all command parsers using the modular functions
    setup_members_parser(subparsers)
    setup_schedules_parser(subparsers)
    setup_services_parser(subparsers)
    
    return parser


def main():
    """Main CLI entry point."""
    parser = setup_parser()
    args = parser.parse_args()
    
    if not args.command:
        # Launch interactive mode when no command is provided
        try:
            cli = NimbusFlowCLI()
            run_interactive_mode(cli)
        except CLIError as e:
            print(f"❌ Error: {e}")
            return 1
        except KeyboardInterrupt:
            print("\n🛑 Interrupted by user")
            return 1
        except Exception as e:
            print(f"❌ Unexpected error: {e}")
            return 1
        finally:
            if 'cli' in locals():
                cli.close()
        return
    
    try:
        cli = NimbusFlowCLI()
        
        # Route commands to their respective handlers
        if args.command == "members":
            if args.members_action == "list":
                cmd_members_list(cli, args)
            elif args.members_action == "show":
                cmd_members_show(cli, args)
            else:
                print("❌ Unknown members action. Use 'list' or 'show'")
        
        elif args.command == "schedules":
            if args.schedules_action == "list":
                cmd_schedules_list(cli, args)
            elif args.schedules_action == "show":
                cmd_schedules_show(cli, args)
            elif args.schedules_action == "accept":
                cmd_schedules_accept(cli, args)
            elif args.schedules_action == "decline":
                cmd_schedules_decline(cli, args)
            else:
                print("❌ Unknown schedules action. Use 'list', 'show', 'accept', or 'decline'")
        
        elif args.command == "services":
            if args.services_action == "list":
                cmd_services_list(cli, args)
            else:
                print("❌ Unknown services action. Use 'list'")
        
        else:
            print(f"❌ Unknown command: {args.command}")
    
    except CLIError as e:
        print(f"❌ Error: {e}")
        return 1
    except KeyboardInterrupt:
        print("\n🛑 Interrupted by user")
        return 1
    except Exception as e:
        print(f"❌ Unexpected error: {e}")
        return 1
    finally:
        if 'cli' in locals():
            cli.close()
    
    return 0