from sqlalchemy import Column, String, Integer, Boolean, DateTime, ForeignKey, UniqueConstraint
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.core.database import Base


class TaskStatus(Base):
    __tablename__ = "pjctrl_task_statuses"

    id = Column(String(36), primary_key=True)
    project_id = Column(String(36), ForeignKey("pjctrl_projects.id", ondelete="CASCADE"), nullable=False)
    name = Column(String(50), nullable=False)
    color = Column(String(7), default="#808080", nullable=False)
    position = Column(Integer, default=0, nullable=False)
    is_done = Column(Boolean, default=False, nullable=False)
    created_at = Column(DateTime, server_default=func.now(), nullable=False)

    __table_args__ = (
        UniqueConstraint('project_id', 'name', name='uk_status_name'),
    )

    # Relationships
    project = relationship("Project", back_populates="task_statuses")
    tasks = relationship("Task", back_populates="status")


# Default statuses to create for new projects
DEFAULT_STATUSES = [
    {"name": "To Do", "color": "#808080", "position": 0, "is_done": False},
    {"name": "In Progress", "color": "#0066cc", "position": 1, "is_done": False},
    {"name": "Blocked", "color": "#cc0000", "position": 2, "is_done": False},
    {"name": "Done", "color": "#00cc66", "position": 3, "is_done": True},
]