"""
Ledger models based on legacy LEDGER.SC analysis
"""
from sqlalchemy import Column, Integer, String, Date, Float, Boolean, Text, ForeignKey
from sqlalchemy.orm import relationship
from app.models.base import BaseModel


class Ledger(BaseModel):
    """
    Financial transactions per case
    Corresponds to LEDGER table in legacy system
    """
    __tablename__ = "ledger"
    
    id = Column(Integer, primary_key=True, autoincrement=True)
    file_no = Column(String(45), ForeignKey("files.file_no"), nullable=False)
    item_no = Column(Integer, nullable=False, default=1)  # Item number within file
    
    # Transaction details
    date = Column(Date, nullable=False)  # Transaction date
    t_code = Column(String(10), nullable=False)  # Transaction code (PMT, FEE, etc.)
    t_type = Column(String(1), nullable=False)  # Transaction type (1-5)
    t_type_l = Column(String(1))  # Transaction type letter (C=Credit, D=Debit, etc.)
    
    # Employee and billing
    empl_num = Column(String(10), nullable=False)  # Employee number
    quantity = Column(Float, default=0.0)  # Number of billable units (hours)
    rate = Column(Float, default=0.0)  # Rate per unit
    amount = Column(Float, nullable=False)  # Dollar amount
    billed = Column(String(1), default="N")  # Y/N - has been billed
    
    # Description
    note = Column(Text)  # Additional notes for transaction
    
    # Relationships
    file = relationship("File", back_populates="ledger_entries")
    
    def __repr__(self):
        return f"<Ledger(file_no='{self.file_no}', amount={self.amount}, date='{self.date}')>"