"""
ORM-модели для PostgreSQL (SQLAlchemy 2.0).

Таблицы:
  - bot_settings: настройки бота (ключ-значение)
  - bot_features: фичи бота (вкл/выкл)
  - bot_categories: категории базы знаний
  - bot_knowledge_base: карточки базы знаний
  - bot_users: пользователи бота (контакты, согласие)
  - bot_conversations: диалоги (state machine)
  - bot_messages: сообщения (incoming/outgoing)
  - bot_tickets: заявки
  - bot_ticket_messages: сообщения заявок
  - bot_processing_logs: логи обработки
  - bot_ticket_statuses: история смены статусов заявок
  - bot_unknown_questions: неизвестные вопросы (автогенерация KB)
"""
from __future__ import annotations
import datetime
from sqlalchemy import Column, Integer, BigInteger, String, Text, Boolean, DateTime, ForeignKey, ARRAY
from sqlalchemy.orm import DeclarativeBase, relationship


class Base(DeclarativeBase):
    pass


class BotSetting(Base):
    __tablename__ = "bot_settings"
    id = Column(Integer, primary_key=True, autoincrement=True)
    key = Column(String(255), unique=True, nullable=False)
    value = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.datetime.utcnow, onupdate=datetime.datetime.utcnow)


class BotFeature(Base):
    __tablename__ = "bot_features"
    id = Column(Integer, primary_key=True, autoincrement=True)
    key = Column(String(255), unique=True, nullable=False)
    name = Column(String(255), nullable=False)
    description = Column(Text, nullable=True)
    is_enabled = Column(Boolean, default=False)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)


class BotCategory(Base):
    __tablename__ = "bot_categories"
    id = Column(Integer, primary_key=True, autoincrement=True)
    name = Column(String(255), nullable=False)
    description = Column(Text, nullable=True)
    sort_order = Column(Integer, default=0)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)


class BotKnowledgeBase(Base):
    __tablename__ = "bot_knowledge_base"
    id = Column(Integer, primary_key=True, autoincrement=True)
    category_id = Column(Integer, ForeignKey("bot_categories.id"), nullable=True)
    question = Column(Text, nullable=False)
    answer = Column(Text, nullable=True)
    keywords = Column(ARRAY(String), nullable=True)
    is_active = Column(Boolean, default=True)
    source_url = Column(String(500), nullable=True)
    sort_order = Column(Integer, default=0)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.datetime.utcnow, onupdate=datetime.datetime.utcnow)

    category = relationship("BotCategory", lazy="joined")


class BotUser(Base):
    """Пользователь бота: профиль, контакты, согласие на обработку ПД."""
    __tablename__ = "bot_users"
    id = Column(BigInteger, primary_key=True)
    first_name = Column(String(255), nullable=True)
    last_name = Column(String(255), nullable=True)
    patronymic = Column(String(255), nullable=True)
    username = Column(String(255), nullable=True)
    phone = Column(String(50), nullable=True)
    email = Column(String(255), nullable=True)
    organization = Column(String(255), nullable=True)
    address = Column(Text, nullable=True)
    vcf_raw = Column(Text, nullable=True)
    contact_hash = Column(String(255), nullable=True)
    phone_verified = Column(Boolean, default=False)
    email_verified = Column(Boolean, default=False)
    consent_given = Column(Boolean, default=False)
    consent_date = Column(DateTime, nullable=True)
    consent_revoked_date = Column(DateTime, nullable=True)
    last_interaction = Column(DateTime, nullable=True)
    total_conversations = Column(Integer, default=0)
    total_tickets = Column(Integer, default=0)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.datetime.utcnow, onupdate=datetime.datetime.utcnow)


class BotConversation(Base):
    __tablename__ = "bot_conversations"
    id = Column(BigInteger, primary_key=True, autoincrement=True)
    user_id = Column(BigInteger, ForeignKey("bot_users.id"), nullable=False)
    state = Column(String(50), default="greeting")
    intent = Column(String(50), nullable=True)
    inquiry_text = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.datetime.utcnow, onupdate=datetime.datetime.utcnow)

    user = relationship("BotUser", lazy="joined")


class BotMessage(Base):
    __tablename__ = "bot_messages"
    id = Column(BigInteger, primary_key=True, autoincrement=True)
    conversation_id = Column(BigInteger, ForeignKey("bot_conversations.id", ondelete="CASCADE"), nullable=False)
    direction = Column(String(10), nullable=False)
    text = Column(Text, nullable=True)
    attachment_json = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)

    conversation = relationship("BotConversation", lazy="joined")


class BotTicket(Base):
    __tablename__ = "bot_tickets"
    id = Column(BigInteger, primary_key=True, autoincrement=True)
    user_id = Column(BigInteger, ForeignKey("bot_users.id"), nullable=False)
    title = Column(String(500), nullable=True)
    description = Column(Text, nullable=True)
    priority = Column(String(20), default="normal")
    status = Column(String(20), default="Новая")
    created_by = Column(String(100), default="bot")
    assigned_to = Column(BigInteger, nullable=True)
    contact_name = Column(String(500), nullable=True)
    contact_phone = Column(String(50), nullable=True)
    contact_email = Column(String(255), nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.datetime.utcnow, onupdate=datetime.datetime.utcnow)

    user = relationship("BotUser", lazy="joined")


class BotTicketMessage(Base):
    __tablename__ = "bot_ticket_messages"
    id = Column(BigInteger, primary_key=True, autoincrement=True)
    ticket_id = Column(BigInteger, ForeignKey("bot_tickets.id"), nullable=False)
    direction = Column(String(10), nullable=False)
    text = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)

    ticket = relationship("BotTicket", lazy="joined")


class BotProcessingLog(Base):
    __tablename__ = "bot_processing_logs"
    id = Column(BigInteger, primary_key=True, autoincrement=True)
    user_id = Column(BigInteger, ForeignKey("bot_users.id"), nullable=False)
    conversation_id = Column(BigInteger, ForeignKey("bot_conversations.id", ondelete="CASCADE"), nullable=True)
    step = Column(String(50), nullable=False)
    status = Column(String(20), default="ok")
    message = Column(Text, nullable=True)
    detail = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)

    user = relationship("BotUser", lazy="joined")


class BotTicketStatus(Base):
    __tablename__ = "bot_ticket_statuses"
    id = Column(BigInteger, primary_key=True, autoincrement=True)
    ticket_id = Column(BigInteger, ForeignKey("bot_tickets.id"), nullable=False)
    old_status = Column(String(20), nullable=True)
    new_status = Column(String(20), nullable=False)
    changed_by = Column(String(100), nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)

    ticket = relationship("BotTicket", lazy="joined")


class BotUnknownQuestion(Base):
    __tablename__ = "bot_unknown_questions"
    id = Column(Integer, primary_key=True, autoincrement=True)
    question_text = Column(Text, nullable=False)
    normalized_text = Column(Text, nullable=True)
    ask_count = Column(Integer, default=1)
    user_ids = Column(ARRAY(BigInteger), default=[])
    status = Column(String(50), default="new")
    generated_answer = Column(Text, nullable=True)
    generated_keywords = Column(ARRAY(String), nullable=True)
    generated_category_id = Column(Integer, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    reviewed_at = Column(DateTime, nullable=True)