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db.py
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db.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = "ipetrash"
import datetime as DT
import logging
import shutil
from collections import defaultdict
from typing import Any, Callable, Union, Optional
from pathlib import Path
# pip install peewee
from peewee import (
SqliteDatabase,
Model,
fn,
Query,
TextField,
ForeignKeyField,
DateTimeField,
BooleanField,
)
from config import DIR
from third_party.shorten import shorten
DB_FILE_NAME = DIR / "database.sqlite"
BACKUP_DIR_NAME = DIR / "backup"
def db_create_backup(log: logging.Logger, backup_dir=BACKUP_DIR_NAME):
backup_path = Path(backup_dir)
backup_path.mkdir(parents=True, exist_ok=True)
file_name = str(DT.datetime.today().date()) + ".sqlite"
file_name = backup_path / file_name
log.debug(f"Doing create backup in: {file_name}")
shutil.copy(DB_FILE_NAME, file_name)
# Ensure foreign-key constraints are enforced.
db = SqliteDatabase(DB_FILE_NAME, pragmas={"foreign_keys": 1})
class BaseModel(Model):
class Meta:
database = db
def __str__(self):
fields = []
for k, field in self._meta.fields.items():
v = getattr(self, k)
if isinstance(field, TextField):
if v:
v = repr(shorten(v))
elif isinstance(field, ForeignKeyField):
k = f"{k}_id"
if v:
v = v.id
fields.append(f"{k}={v}")
return self.__class__.__name__ + "(" + ", ".join(fields) + ")"
class GistFile(BaseModel):
commit_hash = TextField(unique=True)
committed_at = DateTimeField()
raw_url = TextField()
content = TextField()
@property
def committed_at_dt(self) -> Union[DT.datetime, DateTimeField]:
if isinstance(self.committed_at, str):
return DT.datetime.fromisoformat(self.committed_at)
return self.committed_at
@classmethod
def has(cls, commit_hash: str) -> bool:
return cls.get_or_none(commit_hash=commit_hash)
class Game(BaseModel):
name = TextField()
platform = TextField()
category = TextField()
append_datetime = DateTimeField()
finish_datetime = DateTimeField(null=True)
ignored = BooleanField(default=False)
root_alias = ForeignKeyField("self", null=True)
class Meta:
indexes = (
(("name", "platform", "category"), True),
)
@classmethod
def get_all_by(cls, **filters) -> list["Game"]:
return list(cls.select().filter(**filters).order_by(cls.id))
def get_first_root(self) -> "Game":
# Идем вверх пока не найдем самую первую игру
root_alias = self.root_alias
while root_alias:
# Если у текущей игры нет псевдонима
if not root_alias.root_alias:
break
root_alias = root_alias.root_alias
return root_alias
@property
def append_datetime_dt(self) -> Union[DT.datetime, DateTimeField]:
append_datetime = self.append_datetime
root_alias = self.get_first_root()
if root_alias and root_alias.append_datetime is not None:
append_datetime = root_alias.append_datetime
if isinstance(append_datetime, str):
return DT.datetime.fromisoformat(append_datetime)
return append_datetime
@property
def finish_datetime_dt(self) -> Union[DT.datetime, DateTimeField]:
finish_datetime = self.finish_datetime
root_alias = self.get_first_root()
if root_alias and root_alias.finish_datetime is not None:
finish_datetime = root_alias.finish_datetime
if isinstance(finish_datetime, str):
return DT.datetime.fromisoformat(finish_datetime)
return finish_datetime
@classmethod
def get_query_for_current_finished(cls) -> Query:
return cls.select().where(cls.finish_datetime.is_null(False), cls.ignored == 0)
@classmethod
def get_all_finished(cls, sort: bool = True) -> list["Game"]:
query = cls.get_query_for_current_finished()
items = list(query)
if sort:
items.sort(key=lambda item: item.finish_datetime_dt, reverse=True)
return items
@classmethod
def get_all_finished_by_year(cls, year: int) -> list["Game"]:
query = cls.get_query_for_current_finished()
# Проще отсортировать тут, чем в базе из-за особенностей finish_datetime_dt
items = [game for game in query if game.finish_datetime_dt.year == year]
items.sort(key=lambda item: item.finish_datetime_dt, reverse=True)
return items
@classmethod
def get_year_by_number(cls) -> list[tuple[int, int]]:
fn_year = fn.strftime("%Y", cls.finish_datetime).cast("INTEGER")
year_by_number = []
for game in (
cls
.select(
fn_year.alias("year"),
fn.count(cls.id).alias("count")
)
.where(cls.finish_datetime.is_null(False), cls.ignored == 0)
.group_by(fn_year)
.order_by(fn_year.desc())
):
year_by_number.append((
game.year, game.count
))
return year_by_number
@classmethod
def get_day_by_games(cls, year: int) -> dict[str, list["Game"]]:
day_by_games = defaultdict(list)
for game in Game.get_all_finished_by_year(year):
day = game.finish_datetime_dt.strftime("%d/%m/%Y")
day_by_games[day].append(game)
return day_by_games
@classmethod
def get_platforms(cls) -> list[str]:
return sorted(set(game.platform for game in cls.get_query_for_current_finished()))
class Settings(BaseModel):
key = TextField(unique=True)
value = TextField()
@classmethod
def set_value(cls, key: str, value: str):
obj = cls.get_or_none(key=key)
if obj:
if cls.get_value(key) != value:
obj.value = value
obj.save()
else:
cls.create(
key=key,
value=value,
)
@classmethod
def get_value(cls, key: str, get_typing_value_func: Callable = None) -> Optional[Union[str, Any]]:
obj = cls.get_or_none(key=key)
value = obj and obj.value
if get_typing_value_func:
value = get_typing_value_func(value)
return value
@classmethod
def remove_value(cls, key: str):
obj = cls.get_or_none(key=key)
if obj:
obj.delete_instance()
db.connect()
db.create_tables([GistFile, Game, Settings])
if __name__ == "__main__":
for year, number in Game.get_year_by_number():
print(year, number)
print()
day_by_games = Game.get_day_by_games(2021)
for day, games in list(day_by_games.items())[:3]:
print(f"{day} ({len(games)}):")
for game in games:
print(f" {game.name} ({game.platform})")
print()
# for game in Game.select()\
# .where(Game.finish_datetime.is_null(False), Game.ignored == 0)\
# .order_by(Game.finish_datetime.desc(), Game.name.asc()):
# print(game)
for gist_file in GistFile.select().order_by(GistFile.committed_at.asc()).limit(5):
print(gist_file)
print()
for game in Game.select().limit(5):
print(game)
print()
for game in Game.select().order_by(Game.id.desc()).limit(5):
print(game)
# NOTE: Осторожнее, если в данный момент будет запись в базу, произойдет ошибка, т.к.
# база будет залочена
# import uuid
# key = uuid.uuid4().hex
# value = uuid.uuid4().hex
#
# assert Settings.get_value(key) is None
#
# Settings.set_value(key, value)
# assert Settings.get_value(key) == value
#
# Settings.remove_value(key)
# assert Settings.get_value(key) is None
print()
game = Game.get_by_id(606)
print(game.finish_datetime_dt, game.root_alias.finish_datetime_dt)
# Тут будет такая цепочка:
# * "1468) 'Final Fantasy IX' | PS1 | 2020-06-28 03:53:26+05:00", root_alias=610
# * "610) 'Final Fantasy IX' | PS | 2016-12-30 07:19:39+05:00", root_alias=15
# * "15) 'Final Fantasy 9' | PS | 2015-06-22 22:40:22+05:00", root_alias=null
print(Game.get_by_id(1468).finish_datetime_dt)
print()
platforms = Game.get_platforms()
print(f"All platforms ({len(platforms)}): {platforms}")