from sqlite3 import connect

from shell.Handlers.InstanceHandler import InstanceHandler


class Handler:
    def __init__(self):
        self.exec_succeed = True
        self.global_commands = GlobalCommandsHandler()
        self.instance_commands = InstanceHandler()

        pass


    def handle(self, command: list[str]):
        if len(command) == 0: return

        verb = command[0].upper()
        if verb == 'CHECK':
            if not self.exec_succeed: raise RuntimeWarning("Last command execution failed")
            else: return
        else: self.exec_succeed = False

        if verb == 'PYTHONAPP': self.instance_commands.handle(command[1:])
        else: self.global_commands.handle(command)

        self.exec_succeed = True



class GlobalCommandsHandler:
    def __init__(self):
        pass

    def _unknown_command(self, command: list[str]):
        command_str = ''
        for word in command: command_str += word + ' '
        raise ValueError(f"Unknown command: {command_str}")

    def handle(self, command: list[str]):
        if len(command) == 0: return

        verb = command[0].upper()

        if verb == "TELL":
            command_str = ''
            for word in command[1:]: command_str += word + ' '
            print(command_str)
        elif verb == "EXIT": raise KeyboardInterrupt
        else:
            self._unknown_command(command)
        return