"""Alembic Environment Configuration"""
from logging.config import fileConfig

from sqlalchemy import pool
from sqlalchemy import create_engine

from alembic import context

# Import models directly (avoid env file issues)
from sqlalchemy import Column, Integer, String, DateTime, Float, Boolean, Text, JSON
from sqlalchemy.ext.declarative import declarative_base
from datetime import datetime

Base = declarative_base()

# Import models manually
class Invoice(Base):
    __tablename__ = "invoices"
    id = Column(Integer, primary_key=True)
    email_id = Column(String, index=True)
    email_subject = Column(String, nullable=True)
    email_from = Column(String, nullable=True)
    email_date = Column(DateTime, nullable=True)
    invoice_number = Column(String, index=True, nullable=True)
    invoice_date = Column(DateTime, nullable=True)
    invoice_amount = Column(Float, nullable=True)
    invoice_tax_amount = Column(Float, nullable=True)
    invoice_tax_rate = Column(Float, nullable=True)
    invoice_tax_type = Column(String, nullable=True)
    issuer_name = Column(String, nullable=True)
    issuer_address = Column(Text, nullable=True)
    file_path = Column(String, nullable=True)
    file_name = Column(String, nullable=True)
    storage_year = Column(Integer, nullable=True)
    storage_path = Column(String, nullable=True)
    processed = Column(Boolean, default=False)
    processing_error = Column(Text, nullable=True)
    confidence_score = Column(Float, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

class EmailLog(Base):
    __tablename__ = "email_logs"
    id = Column(Integer, primary_key=True)
    email_id = Column(String, unique=True, index=True)
    email_subject = Column(String, nullable=True)
    email_from = Column(String, nullable=True)
    email_date = Column(DateTime, nullable=True)
    email_folder = Column(String, nullable=True)
    matched_keywords = Column(JSON, nullable=True)
    has_attachment = Column(Boolean, default=False)
    attachment_type = Column(String, nullable=True)
    processed = Column(Boolean, default=False)
    processing_result = Column(String, nullable=True)
    invoice_id = Column(Integer, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)

class InvoiceDetail(Base):
    __tablename__ = "invoice_details"
    id = Column(Integer, primary_key=True)
    invoice_id = Column(Integer, nullable=False, index=True)
    raw_text = Column(Text, nullable=True)
    parsed_data = Column(JSON, nullable=True)
    confidence_breakdown = Column(JSON, nullable=True)
    processing_notes = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)

class User(Base):
    __tablename__ = "users"
    id = Column(Integer, primary_key=True)
    username = Column(String, unique=True, index=True)
    hashed_password = Column(String)
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime, default=datetime.utcnow)

# Set target metadata for autogenerate
target_metadata = Base.metadata

# other values from the config
def get_url():
    """Get database URL from environment"""
    import os
    return os.getenv("DATABASE_URL", "postgresql+psycopg2://postgres:postgres@localhost:5432/invoice_check")

def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode."""
    url = get_url()
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
        render_as_batch=True,
    )

    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    """Run migrations in 'online' mode."""
    url = get_url()

    connectable = create_engine(
        url,
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection,
            target_metadata=target_metadata,
            render_as_batch=True,
        )

        with context.begin_transaction():
            context.run_migrations()


if context.is_offline_mode():
    run_migrations_offline()
else:
    run_migrations_online()