"""PostgreSQL 渠道网关模型 - 渠道绑定、出站重试、消息审计日志"""

from sqlalchemy import (
    JSON,
    Boolean,
    Column,
    DateTime,
    ForeignKey,
    Integer,
    String,
    Text,
    UniqueConstraint,
)
from yuxi.storage.postgres.models_business import Base
from yuxi.utils.datetime_utils import format_utc_datetime, utc_now_naive


class ChannelBinding(Base):
    """渠道 Agent 绑定路由表 — Worker Step 3 查询，决定消息路由到哪个 Agent"""

    __tablename__ = "channel_bindings"

    id = Column(Integer, primary_key=True, autoincrement=True, comment="主键")
    channel_type = Column(String(20), nullable=False, index=True, comment="渠道类型: feishu/dingtalk/hooks")
    account_id = Column(String(64), nullable=False, default="", comment="渠道账户标识")
    group_id = Column(String(128), nullable=False, default="", comment="群组标识，DM 为空字符串")
    agent_config_id = Column(Integer, ForeignKey("agent_configs.id"), nullable=False, comment="绑定的 Agent 配置 ID")
    session_key_strategy = Column(String(20), nullable=False, default="auto", comment="会话键策略: auto/main/channel_group/custom")
    is_enabled = Column(Boolean, nullable=False, default=True, index=True, comment="是否启用")

    created_by = Column(String(64), nullable=True)
    updated_by = Column(String(64), nullable=True)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive, comment="创建时间")
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive, comment="更新时间")
    is_deleted = Column(Integer, nullable=False, default=0, index=True, comment="软删除标记: 0=否, 1=是")
    deleted_at = Column(DateTime, nullable=True, comment="删除时间")

    __table_args__ = (
        UniqueConstraint("channel_type", "account_id", "group_id", name="uq_channel_binding"),
    )

    def to_dict(self):
        return {
            "id": self.id,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "group_id": self.group_id,
            "agent_config_id": self.agent_config_id,
            "session_key_strategy": self.session_key_strategy,
            "is_enabled": bool(self.is_enabled),
            "created_by": self.created_by,
            "updated_by": self.updated_by,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
            "is_deleted": self.is_deleted,
            "deleted_at": format_utc_datetime(self.deleted_at),
        }


class ChannelOutbox(Base):
    """出站消息重试队列 — 适配器发送失败后持久化，OutboxRetryWorker 按指数退避重试"""

    __tablename__ = "channel_outbox"

    id = Column(Integer, primary_key=True, autoincrement=True, comment="主键")
    message_id = Column(String(64), nullable=False, index=True, comment="关联的原始消息 ID")
    session_id = Column(String(64), nullable=False, index=True, comment="会话 ID (thread_id)")
    channel_type = Column(String(20), nullable=False, index=True, comment="目标渠道类型")
    content = Column(Text, nullable=False, comment="待发送内容 (标准 Markdown)")
    status = Column(
        String(20), nullable=False, default="pending", index=True,
        comment="状态: pending/retrying/sent/failed/dead",
    )
    retry_count = Column(Integer, nullable=False, default=0, comment="已重试次数")
    max_retries = Column(Integer, nullable=False, default=5, comment="最大重试次数")
    next_retry_at = Column(DateTime, nullable=True, index=True, comment="下次重试时间")
    last_error = Column(Text, nullable=True, comment="最后一次发送错误信息")
    trace_id = Column(String(64), nullable=True, index=True, comment="链路追踪 ID")
    extra_metadata = Column(JSON, nullable=True, comment="扩展元数据")

    created_by = Column(String(64), nullable=True)
    updated_by = Column(String(64), nullable=True)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive, comment="创建时间")
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive, comment="更新时间")
    is_deleted = Column(Integer, nullable=False, default=0, index=True, comment="软删除标记: 0=否, 1=是")
    deleted_at = Column(DateTime, nullable=True, comment="删除时间")

    def to_dict(self):
        return {
            "id": self.id,
            "message_id": self.message_id,
            "session_id": self.session_id,
            "channel_type": self.channel_type,
            "content": self.content,
            "status": self.status,
            "retry_count": self.retry_count,
            "max_retries": self.max_retries,
            "next_retry_at": format_utc_datetime(self.next_retry_at),
            "last_error": self.last_error,
            "trace_id": self.trace_id,
            "extra_metadata": self.extra_metadata or {},
            "created_by": self.created_by,
            "updated_by": self.updated_by,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
            "is_deleted": self.is_deleted,
            "deleted_at": format_utc_datetime(self.deleted_at),
        }


class ChannelMessageLog(Base):
    """渠道消息审计日志 — 记录入站/出站消息处理轨迹，支持 trace_id 链路追踪"""

    __tablename__ = "channel_message_logs"

    id = Column(Integer, primary_key=True, autoincrement=True, comment="主键")
    trace_id = Column(String(64), nullable=False, index=True, comment="链路追踪 ID")
    message_id = Column(String(64), nullable=False, index=True, comment="消息 ID")
    channel_type = Column(String(20), nullable=False, index=True, comment="渠道类型")
    conversation_id = Column(Integer, nullable=True, index=True, comment="关联的 Conversation ID")
    session_id = Column(String(64), nullable=True, index=True, comment="会话 ID")
    direction = Column(String(10), nullable=False, index=True, comment="方向: inbound/outbound")
    sender_id = Column(String(64), nullable=True, comment="发送者 ID")
    content_summary = Column(String(500), nullable=True, comment="内容摘要（前 500 字符）")
    agent_config_id = Column(Integer, nullable=True, index=True, comment="Agent 配置 ID")
    status = Column(String(20), nullable=False, default="received", index=True, comment="处理状态")
    pipeline_result = Column(String(20), nullable=True, comment="管道处理结果: accepted/aborted/skipped")
    abort_reason = Column(String(64), nullable=True, comment="管道中止原因码")
    worker_result = Column(String(20), nullable=True, comment="Worker 处理结果")
    error_message = Column(Text, nullable=True, comment="错误信息")
    processing_time_ms = Column(Integer, nullable=True, comment="总处理耗时（毫秒）")
    extra_metadata = Column(JSON, nullable=True, comment="扩展元数据")

    created_by = Column(String(64), nullable=True)
    updated_by = Column(String(64), nullable=True)
    created_at = Column(DateTime, nullable=False, default=utc_now_naive, comment="创建时间")
    updated_at = Column(DateTime, nullable=False, default=utc_now_naive, onupdate=utc_now_naive, comment="更新时间")
    is_deleted = Column(Integer, nullable=False, default=0, index=True, comment="软删除标记: 0=否, 1=是")
    deleted_at = Column(DateTime, nullable=True, comment="删除时间")

    def to_dict(self):
        return {
            "id": self.id,
            "trace_id": self.trace_id,
            "message_id": self.message_id,
            "channel_type": self.channel_type,
            "conversation_id": self.conversation_id,
            "session_id": self.session_id,
            "direction": self.direction,
            "sender_id": self.sender_id,
            "content_summary": self.content_summary,
            "agent_config_id": self.agent_config_id,
            "status": self.status,
            "pipeline_result": self.pipeline_result,
            "abort_reason": self.abort_reason,
            "worker_result": self.worker_result,
            "error_message": self.error_message,
            "processing_time_ms": self.processing_time_ms,
            "extra_metadata": self.extra_metadata or {},
            "created_by": self.created_by,
            "updated_by": self.updated_by,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
            "is_deleted": self.is_deleted,
            "deleted_at": format_utc_datetime(self.deleted_at),
        }