"""Company model — with soft-delete, FTS tsvector, and tenant scoping."""

from __future__ import annotations

import uuid
from datetime import datetime
from typing import Any

from sqlalchemy import String, Text, DateTime, ForeignKey, Index, Computed
from sqlalchemy.dialects.postgresql import UUID as PGUUID, TSVECTOR
from sqlalchemy.orm import Mapped, mapped_column

from app.core.db import Base, TenantMixin


class Company(Base, TenantMixin):
    """Company entity with full-text search support."""

    __tablename__ = "companies"
    __table_args__ = (
        Index("ix_companies_tenant_deleted", "tenant_id", "deleted_at"),
        Index("ix_companies_tenant_name", "tenant_id", "name"),
        Index("ix_companies_industry", "tenant_id", "industry"),
        Index("ix_companies_search_vec", "search_tsv", postgresql_using="gin"),
    )

    id: Mapped[uuid.UUID] = mapped_column(
        PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    name: Mapped[str] = mapped_column(String(100), nullable=False)
    account_number: Mapped[str | None] = mapped_column(String(40), nullable=True)
    industry: Mapped[str | None] = mapped_column(String(50), nullable=True)
    phone: Mapped[str | None] = mapped_column(String(30), nullable=True)
    email: Mapped[str | None] = mapped_column(String(255), nullable=True)
    website: Mapped[str | None] = mapped_column(String(500), nullable=True)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    deleted_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    # FTS vector — PostgreSQL generated column, auto-updated on insert/update
    search_tsv: Mapped[Any] = mapped_column(
        TSVECTOR,
        Computed(
            "to_tsvector('english', coalesce(name, '') || ' ' || coalesce(description, '') || ' ' || coalesce(industry, ''))",
            persisted=True,
        ),
        nullable=True,
    )
    created_by: Mapped[uuid.UUID | None] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True
    )
    updated_by: Mapped[uuid.UUID | None] = mapped_column(
        PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True
    )