import uuid
from datetime import datetime
from decimal import Decimal

from sqlalchemy import Boolean, DateTime, ForeignKey, LargeBinary, Numeric, String, Text
from sqlalchemy.dialects.postgresql import JSONB, UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base


class Account(Base):
    __tablename__ = "accounts"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    name_enc: Mapped[bytes] = mapped_column("name", LargeBinary, nullable=False)
    institution_enc: Mapped[bytes | None] = mapped_column("institution", LargeBinary, nullable=True)
    type: Mapped[str] = mapped_column(String(30), nullable=False)
    currency: Mapped[str] = mapped_column(String(10), nullable=False)
    current_balance: Mapped[Decimal] = mapped_column(Numeric(20, 8), default=0, nullable=False)
    credit_limit: Mapped[Decimal | None] = mapped_column(Numeric(20, 8), nullable=True)
    interest_rate: Mapped[Decimal | None] = mapped_column(Numeric(8, 4), nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    include_in_net_worth: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    color: Mapped[str] = mapped_column(String(7), default="#6366f1", nullable=False)
    icon: Mapped[str | None] = mapped_column(Text, nullable=True)
    notes_enc: Mapped[bytes | None] = mapped_column("notes", LargeBinary, nullable=True)
    meta: Mapped[dict] = mapped_column(JSONB, default=dict, nullable=False)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
    deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    user: Mapped["User"] = relationship(back_populates="accounts", lazy="noload")  # type: ignore[name-defined]
    transactions: Mapped[list["Transaction"]] = relationship(foreign_keys="Transaction.account_id", back_populates="account", lazy="noload")  # type: ignore[name-defined]
    holdings: Mapped[list["InvestmentHolding"]] = relationship(back_populates="account", lazy="noload")  # type: ignore[name-defined]