add support for skills

src/ttfrog/db/schema/property.py

@@ -1,27 +1,17 @@
-from sqlalchemy import Column, Integer, String, Text
+from sqlalchemy import ForeignKey, String
+from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from ttfrog.db.base import BaseObject
 
 __all__ = [
     "Skill",
-    "Proficiency",
 ]
 
 
 class Skill(BaseObject):
     __tablename__ = "skill"
-    id = Column(Integer, primary_key=True, autoincrement=True)
-    name = Column(String, index=True, unique=True)
-    description = Column(Text)
+    id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(collation="NOCASE"), nullable=False, unique=True)
+    base_id: Mapped[int] = mapped_column(ForeignKey("skill.id"), nullable=True, default=None)
 
-    def __repr__(self):
-        return str(self.name)
-
-
-class Proficiency(BaseObject):
-    __tablename__ = "proficiency"
-    id = Column(Integer, primary_key=True, autoincrement=True)
-    name = Column(String, index=True, unique=True)
-
-    def __repr__(self):
-        return str(self.name)
+    parent: Mapped["Skill"] = relationship(init=False, remote_side=id, uselist=False, lazy="immediate")