import uuid
from sqlalchemy import Column, String, ForeignKey, JSON, Boolean, DateTime, Numeric
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from app.core.database import Base


class User(Base):
    __tablename__ = "pjctrl_users"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    email = Column(String(200), unique=True, nullable=False, index=True)
    employee_id = Column(String(50), unique=True, nullable=True, index=True)
    name = Column(String(200), nullable=False)
    department_id = Column(String(36), ForeignKey("pjctrl_departments.id"), nullable=True)
    role_id = Column(String(36), ForeignKey("pjctrl_roles.id"), nullable=True)
    skills = Column(JSON, nullable=True)
    capacity = Column(Numeric(5, 2), default=40.00)
    is_active = Column(Boolean, default=True)
    is_system_admin = Column(Boolean, default=False)
    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())

    # Relationships
    department = relationship("Department", backref="users")
    role = relationship("Role", backref="users")

    # Task management relationships
    owned_spaces = relationship("Space", back_populates="owner")
    owned_projects = relationship("Project", foreign_keys="Project.owner_id", back_populates="owner")
    assigned_tasks = relationship("Task", foreign_keys="Task.assignee_id", back_populates="assignee")
    created_tasks = relationship("Task", foreign_keys="Task.created_by", back_populates="creator")

    # Collaboration relationships
    comments = relationship("Comment", back_populates="author")
    mentions = relationship("Mention", back_populates="mentioned_user")
    notifications = relationship("Notification", back_populates="user", cascade="all, delete-orphan")
    reported_blockers = relationship("Blocker", foreign_keys="Blocker.reported_by", back_populates="reporter")
    resolved_blockers = relationship("Blocker", foreign_keys="Blocker.resolved_by", back_populates="resolver")

    # Automation relationships
    created_triggers = relationship("Trigger", back_populates="creator")
    scheduled_reports = relationship("ScheduledReport", back_populates="recipient", cascade="all, delete-orphan")