"""
Assignment Template model - Reusable assignment configurations created by therapists
"""
from sqlalchemy import Column, Integer, String, ForeignKey, DateTime, JSON, Text, Boolean
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from config.database import Base

class AssignmentTemplate(Base):
    __tablename__ = "assignment_templates"
    
    id = Column(Integer, primary_key=True)
    therapist_id = Column(Integer, ForeignKey("therapists.id"), nullable=False)
    
    # Template details
    name = Column(String, nullable=False)  # Template name for easy identification
    title = Column(String, nullable=False)  # Default assignment title
    description = Column(Text)
    practice_type = Column(String, nullable=False)  # conversation, reading, articulation
    technique = Column(String, nullable=False)  # normal, prolonged_speech, easy_onset
    
    # Default requirements
    target_sessions = Column(Integer, default=1)
    target_duration_minutes = Column(Integer, default=10)
    
    # Specific parameters
    parameters = Column(JSON)  # {topic, difficulty, target_sounds, etc.}
    
    # Metadata
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
    is_active = Column(Boolean, default=True)
    
    # Relationships
    therapist = relationship("Therapist", back_populates="templates")
    
    def __repr__(self):
        return f"<AssignmentTemplate {self.id} - {self.name}>"