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Copy pathmain.py
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86 lines (66 loc) · 2.56 KB
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import time
from cmd import Cmd
from objectbox import Entity, Date, Id, String, Store
@Entity()
class Task:
id = Id()
text = String()
date_created = Date(py_type=int)
date_finished = Date(py_type=int)
# Objectbox expects date timestamp in milliseconds since UNIX epoch
def now_ms() -> int:
return int(time.time_ns() / 1000000)
def format_date(timestamp_ms: int) -> str:
return "" if timestamp_ms == 0 else time.ctime(timestamp_ms / 1000)
class TasklistCmd(Cmd):
prompt = "> "
def __init__(self):
super().__init__()
self._store = Store(directory="tasklist-db")
self._task_box = self._store.box(Task)
self._query = self._task_box.query().build()
def add_task(self, text: str):
task = Task(text=text, date_created=now_ms())
self._task_box.put(task)
def remove_task(self, task_id: int) -> bool:
is_removed = self._task_box.remove(task_id)
return is_removed
def find_tasks(self):
query = self._task_box.query().build()
return query.find()
# *** Command line ***
def do_ls(self, _):
""" Lists all the tasks created. """
tasks = self.find_tasks()
print("%3s %-29s %-29s %s" % ("ID", "Created", "Finished", "Text"))
for task in tasks:
print("%3d %-29s %-29s %s" % (
task.id, format_date(task.date_created), format_date(task.date_finished), task.text))
def do_new(self, text: str):
""" Creates a new task with the given text (all arguments concatenated). """
self.add_task(text)
def do_done(self, task_id: str):
""" Marks the task with the given ID as done. """
if not task_id.isdigit() or int(task_id) <= 0:
print(f"Invalid task ID: \"{task_id}\"")
return
task = self._task_box.get(int(task_id))
if task is None:
print(f"Task {task_id} not found")
return
task.date_finished = now_ms()
self._task_box.put(task)
def do_rm(self, task_id: str):
""" Removes a task given its ID. """
if not task_id.isdigit() or int(task_id) <= 0:
print(f"Invalid task ID: \"{task_id}\"")
return
is_removed = self.remove_task(int(task_id))
if not is_removed:
print(f"Task {task_id} not found")
def do_exit(self, _):
""" Closes the program. """
raise SystemExit()
if __name__ == '__main__':
app = TasklistCmd()
app.cmdloop('Welcome to the ObjectBox tasks-list app example. Type help or ? for a list of commands.')