"""
SQLAlchemy models for the Delphi database.

All models inherit from Base which is configured in the database module.
"""

from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Float, Text, Boolean
from sqlalchemy.orm import relationship
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.sql import func

# Create Base for SQLAlchemy 1.x compatibility
Base = declarative_base()


class User(Base):
    """
    User model for authentication.

    Stores user credentials and basic information for login functionality.
    """
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, index=True, nullable=False)
    password_hash = Column(String(255), nullable=False)
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    def __repr__(self):
        return f"<User(id={self.id}, username='{self.username}')>"


class Client(Base):
    """
    Client model representing individuals or entities.

    Core client information imported from ROLODEX data.
    """
    __tablename__ = "clients"

    id = Column(Integer, primary_key=True, index=True)
    rolodex_id = Column(String(20), unique=True, index=True)
    last_name = Column(String(50))
    first_name = Column(String(50))
    middle_initial = Column(String(10))
    company = Column(String(100))
    address = Column(String(255))
    city = Column(String(50))
    state = Column(String(2))
    zip_code = Column(String(10))
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # Relationships
    phones = relationship("Phone", back_populates="client")
    cases = relationship("Case", back_populates="client")

    def __repr__(self):
        return f"<Client(id={self.id}, name='{self.first_name} {self.last_name}')>"


class Phone(Base):
    """
    Phone number model linked to clients.

    Stores phone number information for clients.
    """
    __tablename__ = "phones"

    id = Column(Integer, primary_key=True, index=True)
    client_id = Column(Integer, ForeignKey("clients.id"), nullable=False)
    phone_type = Column(String(20))  # home, work, mobile, fax, etc.
    phone_number = Column(String(20))
    extension = Column(String(10))
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    # Relationships
    client = relationship("Client", back_populates="phones")

    def __repr__(self):
        return f"<Phone(id={self.id}, number='{self.phone_number}')>"


class Case(Base):
    """
    Case model representing legal cases or files.

    Main case information imported from FILES data.
    """
    __tablename__ = "cases"

    id = Column(Integer, primary_key=True, index=True)
    file_no = Column(String(20), unique=True, index=True, nullable=False)
    client_id = Column(Integer, ForeignKey("clients.id"), nullable=False)
    status = Column(String(20), default="active")
    case_type = Column(String(50))
    description = Column(Text)
    open_date = Column(DateTime(timezone=True))
    close_date = Column(DateTime(timezone=True))
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # Relationships
    client = relationship("Client", back_populates="cases")
    transactions = relationship("Transaction", back_populates="case")
    documents = relationship("Document", back_populates="case")
    payments = relationship("Payment", back_populates="case")

    def __repr__(self):
        return f"<Case(id={self.id}, file_no='{self.file_no}')>"


class Transaction(Base):
    """
    Transaction model for financial transactions.

    Records financial activities related to cases.
    """
    __tablename__ = "transactions"

    id = Column(Integer, primary_key=True, index=True)
    case_id = Column(Integer, ForeignKey("cases.id"), nullable=False)
    transaction_date = Column(DateTime(timezone=True))
    transaction_type = Column(String(20))
    amount = Column(Float)
    description = Column(Text)
    reference = Column(String(50))
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    # Relationships
    case = relationship("Case", back_populates="transactions")

    def __repr__(self):
        return f"<Transaction(id={self.id}, amount={self.amount})>"


class Document(Base):
    """
    Document model for case-related documents.

    Stores information about documents associated with cases.
    """
    __tablename__ = "documents"

    id = Column(Integer, primary_key=True, index=True)
    case_id = Column(Integer, ForeignKey("cases.id"), nullable=False)
    document_type = Column(String(50))
    file_name = Column(String(255))
    file_path = Column(String(500))
    description = Column(Text)
    uploaded_date = Column(DateTime(timezone=True))
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    # Relationships
    case = relationship("Case", back_populates="documents")

    def __repr__(self):
        return f"<Document(id={self.id}, file_name='{self.file_name}')>"


class Payment(Base):
    """
    Payment model for payment records.

    Records payments made or received for cases.
    """
    __tablename__ = "payments"

    id = Column(Integer, primary_key=True, index=True)
    case_id = Column(Integer, ForeignKey("cases.id"), nullable=False)
    payment_date = Column(DateTime(timezone=True))
    payment_type = Column(String(20))
    amount = Column(Float)
    description = Column(Text)
    check_number = Column(String(20))
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    # Relationships
    case = relationship("Case", back_populates="payments")

    def __repr__(self):
        return f"<Payment(id={self.id}, amount={self.amount})>"