refactor: DB related -> db.py

db.py

@@ -0,0 +1,57 @@
+from datetime import datetime, timezone
+from sqlmodel import ARRAY, Column, Relationship, SQLModel, Field, create_engine, String
+
+with open("db.secrets", "r") as f:
+    db_secrets = f.readline().strip()
+
+engine = create_engine(db_secrets)
+del db_secrets
+
+
+def utctime():
+    return datetime.now(tz=timezone.utc)
+
+
+class PlayerTeamLink(SQLModel, table=True):
+    team_id: int | None = Field(default=None, foreign_key="team.id", primary_key=True)
+    player_id: int | None = Field(
+        default=None, foreign_key="player.id", primary_key=True
+    )
+
+
+class Team(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    name: str
+    location: str | None
+    country: str | None
+    players: list["Player"] | None = Relationship(
+        back_populates="teams", link_model=PlayerTeamLink
+    )
+
+
+class Player(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    name: str
+    number: str | None = None
+    teams: list[Team] | None = Relationship(
+        back_populates="players", link_model=PlayerTeamLink
+    )
+
+
+class Chemistry(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    time: datetime | None = Field(default_factory=utctime)
+    user: str
+    love: list[str] = Field(sa_column=Column(ARRAY(String)))
+    hate: list[str] = Field(sa_column=Column(ARRAY(String)))
+    undecided: list[str] = Field(sa_column=Column(ARRAY(String)))
+
+
+class MVPRanking(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    time: datetime | None = Field(default_factory=utctime)
+    user: str
+    mvps: list[str] = Field(sa_column=Column(ARRAY(String)))
+
+
+SQLModel.metadata.create_all(engine)