Added recruitment task

app/models.py

@@ -5,13 +5,87 @@ from sqlalchemy import (
     Column,
     DateTime,
     ForeignKey,
-    Integer,
     PrimaryKeyConstraint,
     String,
 )
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-from sqlalchemy.schema import Index
 from sqlalchemy.sql import func
 
 from app.database import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(
+        UUID(as_uuid=True), primary_key=True, index=True, default=uuid.uuid4
+    )
+
+    name = Column(String, nullable=False)
+    email = Column(String, unique=True, index=True, nullable=False)
+    password_hash = Column(String(60), nullable=False)
+    is_verified = Column(Boolean, default=False)
+
+    posts = relationship("Post", backref="user")
+    likes = relationship("Like", backref="user")
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    def __repr__(self):
+        return f"<User(id={self.id}, name={self.name}, email={self.email}, is_active={self.is_verified}>"
+
+
+class Post(Base):
+    __tablename__ = "posts"
+
+    id = Column(
+        UUID(as_uuid=True), primary_key=True, index=True, default=uuid.uuid4
+    )
+
+    user_id = Column(
+        UUID(as_uuid=True),
+        ForeignKey("users.id", ondelete="CASCADE"),
+        nullable=False,
+    )
+    content = Column(String(512), nullable=False)
+
+    likes = relationship("Like", backref="post")
+
+    created_at = Column(
+        DateTime(timezone=True), server_default=func.now(), index=True
+    )
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    @property
+    def time(self):
+        if self.updated_at:
+            return self.updated_at
+        return self.created_at
+
+    def __repr__(self):
+        return f"<Post(id={self.id}, content={self.content[:10]}>"
+
+
+class Like(Base):
+    __tablename__ = "post_likes"
+
+    user_id = Column(
+        UUID(as_uuid=True),
+        ForeignKey("users.id", ondelete="CASCADE"),
+        nullable=False,
+    )
+    post_id = Column(
+        UUID(as_uuid=True),
+        ForeignKey("posts.id", ondelete="CASCADE"),
+        nullable=False,
+    )
+
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    __table_args__ = (PrimaryKeyConstraint("user_id", "post_id"),)
+
+    def __repr__(self):
+        return f"<Like(user_id={self.user_id}, post_id={self.post_id}>"