"""多渠道网关 ORM 模型 - 渠道用户映射、会话映射、消息记录"""

from typing import Any

from sqlalchemy import (
    BigInteger,
    Column,
    DateTime,
    Index,
    Integer,
    String,
    UniqueConstraint,
)
from sqlalchemy.dialects.postgresql import JSONB
from yuxi.storage.postgres.models_business import Base
from yuxi.utils.datetime_utils import format_utc_datetime, utc_now_naive


class ChannelUserMapping(Base):
    """渠道用户映射表 - 渠道用户与内部用户的绑定关系"""

    __tablename__ = "channels_user_mappings"

    id = Column(BigInteger, primary_key=True, autoincrement=True)
    channel_id = Column(String(32), nullable=False)
    channel_user_id = Column(String(128), nullable=False)
    internal_user_id = Column(String(64), nullable=False)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive)
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive)

    __table_args__ = (UniqueConstraint("channel_id", "channel_user_id", name="uq_channel_user"),)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": self.id,
            "channel_id": self.channel_id,
            "channel_user_id": self.channel_user_id,
            "internal_user_id": self.internal_user_id,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }


class ChannelThreadMapping(Base):
    """渠道会话映射表 - 渠道会话与 LangGraph thread_id 的绑定关系"""

    __tablename__ = "channels_thread_mappings"

    id = Column(BigInteger, primary_key=True, autoincrement=True)
    channel_id = Column(String(32), nullable=False)
    channel_chat_id = Column(String(128), nullable=False)
    internal_user_id = Column(String(64), nullable=False)
    thread_id = Column(String(64), nullable=False)
    agent_id = Column(String(64), nullable=True)
    last_active_at = Column(DateTime, nullable=False, default=utc_now_naive)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive)
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive)

    __table_args__ = (
        UniqueConstraint(
            "channel_id",
            "channel_chat_id",
            "internal_user_id",
            name="uq_channel_thread",
        ),
    )

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": self.id,
            "channel_id": self.channel_id,
            "channel_chat_id": self.channel_chat_id,
            "internal_user_id": self.internal_user_id,
            "thread_id": self.thread_id,
            "agent_id": self.agent_id,
            "last_active_at": format_utc_datetime(self.last_active_at),
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }


class ChannelMsgRecord(Base):
    """消息记录表 - 渠道消息的完整处理生命周期"""

    __tablename__ = "channels_msg_records"

    id = Column(BigInteger, primary_key=True, autoincrement=True)
    channel_id = Column(String(32), nullable=False)
    channel_type = Column(String(32), nullable=False)
    message_id = Column(String(128), nullable=False)
    chat_id = Column(String(128), nullable=False)
    chat_type = Column(String(32), nullable=False, default="direct")
    content_type = Column(String(32), nullable=False, default="text")
    sender_user_id = Column(String(128), nullable=False)
    content_preview = Column(String(500), nullable=False)
    reply_to_message_id = Column(String(128), nullable=True)
    agent_config_id = Column(Integer, nullable=True)
    status = Column(String(32), nullable=False, default="processing")
    error_message = Column(String(500), nullable=True)
    response_time_ms = Column(Integer, nullable=True)
    reply_message_id = Column(String(128), nullable=True)
    reply_content_preview = Column(String(500), nullable=True)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive)
    replied_at = Column(DateTime, nullable=True)
    extra_metadata = Column("metadata", JSONB, nullable=True)

    __table_args__ = (
        Index("idx_msg_records_channel_status", "channel_id", "status"),
        Index("idx_msg_records_created_at", "created_at"),
        Index(
            "idx_msg_records_stuck",
            "channel_id",
            "created_at",
            postgresql_where=(status == "processing"),
        ),
        Index("idx_msg_records_chat", "channel_id", "chat_id"),
    )

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": self.id,
            "channel_id": self.channel_id,
            "channel_type": self.channel_type,
            "message_id": self.message_id,
            "chat_id": self.chat_id,
            "chat_type": self.chat_type,
            "content_type": self.content_type,
            "sender_user_id": self.sender_user_id,
            "content_preview": self.content_preview,
            "reply_to_message_id": self.reply_to_message_id,
            "agent_config_id": self.agent_config_id,
            "status": self.status,
            "error_message": self.error_message,
            "response_time_ms": self.response_time_ms,
            "reply_message_id": self.reply_message_id,
            "reply_content_preview": self.reply_content_preview,
            "created_at": format_utc_datetime(self.created_at),
            "replied_at": format_utc_datetime(self.replied_at),
            "metadata": self.extra_metadata or {},
        }


class ChannelPolicyConfig(Base):
    """渠道策略配置表"""

    __tablename__ = "channels_policy_configs"

    id = Column(BigInteger, primary_key=True, autoincrement=True)
    channel_id = Column(String(32), nullable=False, unique=True)
    group_chat_mode = Column(String(16), nullable=False, default="all")
    whitelist_ids = Column(JSONB, nullable=False, default=list)
    welcome_message = Column(String(500), nullable=True)
    work_hours_start = Column(String(5), nullable=True, default="09:00")
    work_hours_end = Column(String(5), nullable=True, default="18:00")
    timezone_offset = Column(Integer, nullable=False, default=8)
    off_hours_reply = Column(String(500), nullable=True)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive)
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": self.id,
            "channel_id": self.channel_id,
            "group_chat_mode": self.group_chat_mode,
            "whitelist_ids": self.whitelist_ids or [],
            "welcome_message": self.welcome_message,
            "work_hours_start": self.work_hours_start,
            "work_hours_end": self.work_hours_end,
            "timezone_offset": self.timezone_offset,
            "off_hours_reply": self.off_hours_reply,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }


class ChannelRoutingRule(Base):
    """渠道 Agent 路由规则表"""

    __tablename__ = "channels_routing_rules"

    id = Column(BigInteger, primary_key=True, autoincrement=True)
    channel_id = Column(String(32), nullable=False)
    command = Column(String(64), nullable=False)
    agent_config_id = Column(Integer, nullable=False)
    priority = Column(Integer, nullable=False, default=0)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive)
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive)

    __table_args__ = (
        Index("idx_routing_rules_channel", "channel_id"),
        UniqueConstraint("channel_id", "command", name="uq_channel_command"),
    )

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": self.id,
            "channel_id": self.channel_id,
            "command": self.command,
            "agent_config_id": self.agent_config_id,
            "priority": self.priority,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }