from datetime import datetime
from enum import Enum

from sqlalchemy import (
    Column,
    Integer,
    String,
    Text,
    DateTime,
    Boolean,
    Enum as SQLEnum,
    ForeignKey,
)
from sqlalchemy.orm import relationship

from app.db.base_class import Base


class TaskPriority(str, Enum):
    LOW = "low"
    MEDIUM = "medium"
    HIGH = "high"


class TaskStatus(str, Enum):
    TODO = "todo"
    IN_PROGRESS = "in_progress"
    DONE = "done"


class Task(Base):
    id = Column(Integer, primary_key=True, index=True)
    title = Column(String(100), nullable=False)
    description = Column(Text, nullable=True)
    priority = Column(SQLEnum(TaskPriority), default=TaskPriority.MEDIUM)
    status = Column(SQLEnum(TaskStatus), default=TaskStatus.TODO)
    due_date = Column(DateTime, nullable=True)
    completed = Column(Boolean, default=False)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Add relationship to User model
    user_id = Column(Integer, ForeignKey("user.id"), nullable=True)
    user = relationship("User", back_populates="tasks")