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

class TechnicianProfile(Base):
    __tablename__ = "technician_profiles"

    technician_id = Column(String(26), primary_key=True)
    user_id = Column(String(26), nullable=False, unique=True, index=True)
    active = Column(Boolean, default=True)

class TechnicianSkill(Base):
    __tablename__ = "technician_skills"

    technician_id = Column(String(26), ForeignKey("technician_profiles.technician_id", ondelete="CASCADE"), primary_key=True)
    service_type_id = Column(String(26), primary_key=True)  # References CRM service_types table
    skill_level = Column(Integer, default=1)

class TechnicianWorkingHours(Base):
    __tablename__ = "technician_working_hours"

    working_hour_id = Column(String(26), primary_key=True)
    technician_id = Column(String(26), ForeignKey("technician_profiles.technician_id", ondelete="CASCADE"), nullable=False, index=True)
    day_of_week = Column(Integer, nullable=False)  # 0-6 (Monday-Sunday)
    start_time = Column(String(5), nullable=False)  # e.g., "09:00"
    end_time = Column(String(5), nullable=False)    # e.g., "18:00"

class TechnicianLeave(Base):
    __tablename__ = "technician_leaves"

    leave_id = Column(String(26), primary_key=True)
    technician_id = Column(String(26), ForeignKey("technician_profiles.technician_id", ondelete="CASCADE"), nullable=False, index=True)
    start_datetime = Column(DateTime, nullable=False)
    end_datetime = Column(DateTime, nullable=False)
    reason = Column(String(255), nullable=True)