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bp3_command.py
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bp3_command.py
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from abc import ABC, abstractmethod
class Command(ABC):
@abstractmethod
def execute(self):
pass
class NonSoldierCommand(Command):
def __init__(self, payload):
self._payload = payload
def execute(self):
print(f" 💣NonSoldierCommand.executing: ({self._payload})")
class SoldierCommand(Command):
def __init__(self, soldier, resource):
self._soldier = soldier
self._resource = resource
def execute(self):
print(
f" 💣SoldierCommand.executing: ({type(self._soldier)}, {self._resource})"
)
self._soldier.do_something(self._resource)
class Soldier:
def do_something(self, resource):
print(f" Soldier.do_something with: ({resource})")
class Commander:
_first_task = None
_last_task = None
def init_first_command(self, command):
self._first_task = command
def init_last_command(self, command):
self._last_task = command
def execute_main_command(self):
print("Commander: the first task is:")
if isinstance(self._first_task, Command):
self._first_task.execute()
print("Commander: the main task is:")
print(f" 🧨Commander.executing: (Resource for the Main Task)")
print("Commander: the last task is:")
if isinstance(self._last_task, Command):
self._last_task.execute()
if __name__ == "__main__":
commander = Commander()
# commander init: a command encapsulating needed information(resource) to execute the task at a later time.
non_soldier_command = NonSoldierCommand("Resource for the First Task")
commander.init_first_command(non_soldier_command)
# commander init: a command encapsulating needed information(soldier, resource) to execute the task at a later time.
soldier = Soldier()
soldier_command = SoldierCommand(soldier, "Resource for the Last Task")
commander.init_last_command(soldier_command)
# after planning, this is the later time, time to execute the tasks initiated by the commander
commander.execute_main_command()