from sqlalchemy import Column, String, Text, Boolean, DateTime, Date, Numeric, Enum, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.core.database import Base
import enum


class SecurityLevel(str, enum.Enum):
    PUBLIC = "public"
    DEPARTMENT = "department"
    CONFIDENTIAL = "confidential"


class Project(Base):
    __tablename__ = "pjctrl_projects"

    id = Column(String(36), primary_key=True)
    space_id = Column(String(36), ForeignKey("pjctrl_spaces.id", ondelete="CASCADE"), nullable=False)
    title = Column(String(200), nullable=False)
    description = Column(Text, nullable=True)
    owner_id = Column(String(36), ForeignKey("pjctrl_users.id"), nullable=False)
    budget = Column(Numeric(15, 2), nullable=True)
    start_date = Column(Date, nullable=True)
    end_date = Column(Date, nullable=True)
    security_level = Column(
        Enum("public", "department", "confidential", name="security_level_enum"),
        default="department",
        nullable=False
    )
    status = Column(String(50), default="active", nullable=False)
    is_active = Column(Boolean, default=True, nullable=False)
    department_id = Column(String(36), ForeignKey("pjctrl_departments.id"), nullable=True)
    created_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    # Relationships
    space = relationship("Space", back_populates="projects")
    owner = relationship("User", foreign_keys=[owner_id], back_populates="owned_projects")
    department = relationship("Department", back_populates="projects")
    task_statuses = relationship("TaskStatus", back_populates="project", cascade="all, delete-orphan")
    tasks = relationship("Task", back_populates="project", cascade="all, delete-orphan")
    triggers = relationship("Trigger", back_populates="project", cascade="all, delete-orphan")
    health = relationship("ProjectHealth", back_populates="project", uselist=False, cascade="all, delete-orphan")
    custom_fields = relationship("CustomField", back_populates="project", cascade="all, delete-orphan")