"""
CRM 客户域 ORM 模型 —— 映射 crm_customers 表
"""

from __future__ import annotations

import uuid
from datetime import datetime

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

from app.models.base import Base


class CrmCustomer(Base):
    __tablename__ = "crm_customers"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    name: Mapped[str] = mapped_column(String(200), nullable=False)
    level: Mapped[str] = mapped_column(String(1), default="C")
    industry: Mapped[str | None] = mapped_column(String(100), nullable=True)
    contact: 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(100), nullable=True)
    address: Mapped[str | None] = mapped_column(Text, nullable=True)
    ai_score: Mapped[float] = mapped_column(Numeric(5, 2), default=0)
    ai_persona: Mapped[dict | None] = mapped_column(JSONB, default=dict, nullable=True)
    billing_info: Mapped[dict | None] = mapped_column(
        JSONB, default=dict, nullable=True,
        comment="客户开票信息: company_name/tax_id/address/phone/bank_name/bank_account"
    )
    health_score: Mapped[float] = mapped_column(
        Numeric(5, 2), default=0,
        comment="客户健康度评分 (AI 教练引擎计算)"
    )
    meddic_status: Mapped[dict | None] = mapped_column(
        JSONB, default=dict, nullable=True,
        comment="MEDDIC 六维评估状态"
    )
    owner_id: Mapped[uuid.UUID | None] = mapped_column(
        UUID(as_uuid=True), ForeignKey("sys_users.id"), nullable=True
    )
    status: Mapped[int] = mapped_column(SmallInteger, default=1)
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime, server_default=func.now(), onupdate=func.now()
    )
    is_deleted: Mapped[bool] = mapped_column(Boolean, default=False)

    # 关系
    owner: Mapped["SysUser | None"] = relationship("SysUser", lazy="selectin")  # noqa: F821
    contacts: Mapped[list["CrmContact"]] = relationship("CrmContact", back_populates="customer", lazy="selectin")


class CrmContact(Base):
    """客户联系人子表 (V5.0) — 映射 crm_contacts"""
    __tablename__ = "crm_contacts"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    customer_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("crm_customers.id"), nullable=False
    )
    name: Mapped[str] = mapped_column(String(100), nullable=False)
    phone: Mapped[str | None] = mapped_column(String(30), nullable=True)
    title: Mapped[str | None] = mapped_column(String(100), nullable=True)
    ai_buyer_persona: Mapped[dict | None] = mapped_column(JSONB, default=dict, nullable=True)
    is_deleted: Mapped[bool] = mapped_column(Boolean, default=False)
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime, server_default=func.now(), onupdate=func.now()
    )

    # 关系
    customer: Mapped["CrmCustomer"] = relationship("CrmCustomer", back_populates="contacts")