"""PostgreSQL 渠道相关数据模型"""

from typing import Any

from sqlalchemy import (
    JSON,
    Boolean,
    Column,
    DateTime,
    ForeignKey,
    Index,
    Integer,
    String,
    Text,
    UniqueConstraint,
    func,
)
from sqlalchemy.dialects.postgresql import JSONB, UUID
from sqlalchemy.ext.declarative import declarative_base
from yuxi.channel.transport.qr_login import LoginState
from yuxi.utils.datetime_utils import format_utc_datetime, utc_now_naive

Base = declarative_base()

JSON_VALUE = JSON().with_variant(JSONB, "postgresql")


class ChannelConfig(Base):
    """渠道配置表"""

    __tablename__ = "channel_configs"
    __table_args__ = (
        UniqueConstraint("channel_type", "account_id", name="uq_channel_configs_type_account"),
        Index("ix_channel_configs_enabled", "enabled"),
    )

    id = Column(UUID(as_uuid=True), primary_key=True, default=func.gen_random_uuid())
    channel_type = Column(String(32), nullable=False)
    account_id = Column(String(128), nullable=False)
    name = Column(String(100), nullable=True)
    config_json = Column(JSON_VALUE, nullable=False, default=dict)
    enabled = Column(Boolean, nullable=False, default=False)
    created_by = Column(String(100), nullable=True)
    updated_by = Column(String(100), nullable=True)
    created_at = Column(DateTime(timezone=False), default=utc_now_naive)
    updated_at = Column(DateTime(timezone=False), default=utc_now_naive, onupdate=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": str(self.id) if self.id else None,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "name": self.name,
            "config_json": self.config_json or {},
            "enabled": bool(self.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),
        }


class ChannelSession(Base):
    """渠道会话映射表"""

    __tablename__ = "channel_sessions"
    __table_args__ = (
        UniqueConstraint("session_key", name="uq_channel_sessions_session_key"),
        UniqueConstraint("conversation_id", name="uq_channel_sessions_conversation"),
        Index("ix_channel_sessions_key", "session_key"),
        Index("ix_channel_sessions_type_account", "channel_type", "account_id"),
    )

    id = Column(UUID(as_uuid=True), primary_key=True, default=func.gen_random_uuid())
    session_key = Column(String(512), nullable=False)
    channel_type = Column(String(32), nullable=False)
    account_id = Column(String(128), nullable=False)
    chat_type = Column(String(32), nullable=True)
    channel_sender_id = Column(String(255), nullable=True)
    conversation_id = Column(Integer, ForeignKey("conversations.id", ondelete="CASCADE"), nullable=False)
    channel_metadata = Column(JSON_VALUE, nullable=True)
    created_at = Column(DateTime(timezone=False), default=utc_now_naive)
    updated_at = Column(DateTime(timezone=False), default=utc_now_naive, onupdate=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": str(self.id) if self.id else None,
            "session_key": self.session_key,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "chat_type": self.chat_type,
            "channel_sender_id": self.channel_sender_id,
            "conversation_id": self.conversation_id,
            "channel_metadata": self.channel_metadata or {},
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }

    def update_channel_metadata(self, updates: dict[str, Any]) -> None:
        """合并更新 channel_metadata 并标记字段已修改。"""
        from sqlalchemy.orm.attributes import flag_modified

        merged = dict(self.channel_metadata or {})
        merged.update(updates)
        self.channel_metadata = merged
        flag_modified(self, "channel_metadata")


class ChannelBinding(Base):
    """运行时绑定记录"""

    __tablename__ = "channel_bindings"
    __table_args__ = (
        UniqueConstraint(
            "channel_type",
            "account_id",
            "binding_rule_hash",
            "session_key_pattern",
            name="uq_channel_bindings_rule",
        ),
    )

    id = Column(UUID(as_uuid=True), primary_key=True, default=func.gen_random_uuid())
    channel_type = Column(String(32), nullable=False)
    account_id = Column(String(128), nullable=False)
    binding_rule_hash = Column(String(64), nullable=False)
    agent_id = Column(String(80), nullable=False)
    session_key_pattern = Column(String(512), nullable=False, default="")
    match = Column(JSON_VALUE, nullable=True)
    session_override = Column(JSON_VALUE, nullable=True)
    created_by = Column(String(100), nullable=True)
    created_at = Column(DateTime(timezone=False), default=utc_now_naive)
    updated_at = Column(DateTime(timezone=False), default=utc_now_naive, onupdate=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": str(self.id) if self.id else None,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "binding_rule_hash": self.binding_rule_hash,
            "agent_id": self.agent_id,
            "session_key_pattern": self.session_key_pattern,
            "match": self.match or {},
            "session_override": self.session_override or {},
            "created_by": self.created_by,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }


class ChannelPairingRecord(Base):
    """配对码记录表"""

    __tablename__ = "channel_pairing_records"
    __table_args__ = (
        Index(
            "ix_channel_pairing_records_lookup",
            "channel_type",
            "account_id",
            "peer_id",
            "status",
        ),
    )

    id = Column(UUID(as_uuid=True), primary_key=True, default=func.gen_random_uuid())
    channel_type = Column(String(32), nullable=False)
    account_id = Column(String(128), nullable=False)
    peer_id = Column(String(255), nullable=False)
    pairing_code = Column(String(6), nullable=False)
    pairing_token = Column(String(64), nullable=False)
    status = Column(String(20), nullable=False, default="pending")
    expires_at = Column(DateTime(timezone=False), nullable=False)
    paired_at = Column(DateTime(timezone=False), nullable=True)
    platform_user_id = Column(String(255), nullable=True)
    qr_content = Column(String(2048), nullable=True)
    pairing_mode = Column(String(32), nullable=False, default="code")
    created_at = Column(DateTime(timezone=False), default=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": str(self.id) if self.id else None,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "peer_id": self.peer_id,
            "pairing_code": self.pairing_code,
            "pairing_token": self.pairing_token,
            "status": self.status,
            "expires_at": format_utc_datetime(self.expires_at),
            "paired_at": format_utc_datetime(self.paired_at),
            "platform_user_id": self.platform_user_id,
            "qr_content": self.qr_content,
            "pairing_mode": self.pairing_mode,
            "created_at": format_utc_datetime(self.created_at),
        }


class ChannelIdentityLink(Base):
    """渠道用户身份与平台用户身份的绑定关系"""

    __tablename__ = "channel_identity_links"
    __table_args__ = (
        UniqueConstraint(
            "channel_type",
            "account_id",
            "channel_sender_id",
            name="uq_channel_identity_link",
        ),
        Index("ix_channel_identity_links_user", "platform_user_id"),
    )

    id = Column(UUID(as_uuid=True), primary_key=True, default=func.gen_random_uuid())
    channel_type = Column(String(32), nullable=False)
    account_id = Column(String(128), nullable=False)
    channel_sender_id = Column(String(255), nullable=False)
    platform_user_id = Column(String(255), nullable=False)
    paired_by = Column(String(32), nullable=False, default="code")
    created_at = Column(DateTime(timezone=False), default=utc_now_naive)
    updated_at = Column(DateTime(timezone=False), default=utc_now_naive, onupdate=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": str(self.id) if self.id else None,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "channel_sender_id": self.channel_sender_id,
            "platform_user_id": self.platform_user_id,
            "paired_by": self.paired_by,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }


class ChannelLoginRecord(Base):
    """渠道二维码登录记录表"""

    __tablename__ = "channel_login_records"
    __table_args__ = (
        UniqueConstraint("channel_type", "account_id", name="uq_channel_login_records_type_account"),
        Index("ix_channel_login_records_status", "status"),
        Index("ix_channel_login_records_ticket", "current_ticket"),
    )

    id = Column(UUID(as_uuid=True), primary_key=True, default=func.gen_random_uuid())
    channel_type = Column(String(32), nullable=False)
    account_id = Column(String(128), nullable=False)
    status = Column(String(32), nullable=False, default=LoginState.PENDING.value)
    current_ticket = Column(String(512), nullable=True)
    qr_content = Column(String(2048), nullable=True)
    qr_image_url = Column(String(2048), nullable=True)
    qr_image_base64 = Column(Text, nullable=True)
    credentials = Column(JSON_VALUE, nullable=True)
    credential_expires_at = Column(DateTime(timezone=False), nullable=True)
    expires_at = Column(DateTime(timezone=False), nullable=True)
    scanned_at = Column(DateTime(timezone=False), nullable=True)
    logged_in_at = Column(DateTime(timezone=False), nullable=True)
    error_message = Column(String(1024), nullable=True)
    created_at = Column(DateTime(timezone=False), default=utc_now_naive)
    updated_at = Column(DateTime(timezone=False), default=utc_now_naive, onupdate=utc_now_naive)

    def to_dict(self) -> dict[str, Any]:
        return {
            "id": str(self.id) if self.id else None,
            "channel_type": self.channel_type,
            "account_id": self.account_id,
            "status": self.status,
            "current_ticket": self.current_ticket,
            "qr_content": self.qr_content,
            "qr_image_url": self.qr_image_url,
            "qr_image_base64": self.qr_image_base64,
            "credentials": self.credentials or {},
            "credential_expires_at": format_utc_datetime(self.credential_expires_at),
            "expires_at": format_utc_datetime(self.expires_at),
            "scanned_at": format_utc_datetime(self.scanned_at),
            "logged_in_at": format_utc_datetime(self.logged_in_at),
            "error_message": self.error_message,
            "created_at": format_utc_datetime(self.created_at),
            "updated_at": format_utc_datetime(self.updated_at),
        }