"""SQLAlchemy 数据模型。直接复用 Dify 的 db 连接。"""
from sqlalchemy import Column, DateTime, ForeignKey, Integer, String, Text, TIMESTAMP, func
from sqlalchemy.dialects.postgresql import JSONB

from extensions.ext_database import db


class WecomUserMapping(db.Model):
    """企微用户与 Dify 用户映射表。"""
    __tablename__ = "wecom_user_mapping"

    id = Column(Integer, primary_key=True, autoincrement=True)
    wecom_userid = Column(String(64), unique=True, nullable=False)
    dify_user_id = Column(String(64), nullable=False, index=True)
    username = Column(String(128))
    department = Column(String(128))
    role = Column(String(32), default="sales")
    password_hash = Column(String(256))
    status = Column(String(16), default="active")
    created_at = Column(TIMESTAMP, server_default=func.now())
    last_active_at = Column(TIMESTAMP)


class RecommendationRecord(db.Model):
    """产品推荐方案记录表。"""
    __tablename__ = "recommendation_records"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(String(64), nullable=False, index=True)
    customer_name = Column(String(64))
    customer_age = Column(Integer)
    customer_gender = Column(String(8))
    health_status = Column(String(32))
    occupation = Column(String(64))
    annual_income = Column(Integer)
    monthly_budget = Column(Integer)
    insurance_types = Column(Text)  # JSON 数组
    coverage_amount = Column(Integer)
    coverage_period = Column(String(32))
    existing_policies = Column(Text)  # JSON，可为空
    generated_plan = Column(Text)  # Markdown 文本
    plan_variants = Column(Text)  # JSON：多套方案
    dify_task_id = Column(String(64))
    status = Column(String(16), default="pending", index=True)  # pending/processing/done/failed
    error_message = Column(Text)
    share_token = Column(String(64))
    share_expire_at = Column(TIMESTAMP)
    created_at = Column(TIMESTAMP, server_default=func.now(), index=True)
    completed_at = Column(TIMESTAMP)


class SystemOperationLog(db.Model):
    """系统操作日志表。"""
    __tablename__ = "system_operation_logs"

    id = Column(Integer, primary_key=True, autoincrement=True)
    user_id = Column(String(64), nullable=False, index=True)
    action = Column(String(32), nullable=False, index=True)
    target_type = Column(String(32))
    target_id = Column(String(64))
    detail = Column(JSONB)
    ip = Column(String(45))
    user_agent = Column(String(256))
    created_at = Column(TIMESTAMP, server_default=func.now(), index=True)


class ChatSession(db.Model):
    """保险前台会话记录。"""
    __tablename__ = "insurance_chat_sessions"

    id = Column(String(64), primary_key=True)
    user_id = Column(String(64), nullable=False, index=True)
    name = Column(String(255), default="新会话")
    app_id = Column(String(64), index=True)
    api_token = Column(String(255))
    dify_conversation_id = Column(String(64), index=True)
    status = Column(String(16), default="active", index=True)
    created_at = Column(TIMESTAMP, server_default=func.now(), index=True)
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now(), index=True)


class ChatMessage(db.Model):
    """保险前台问答消息记录。"""
    __tablename__ = "insurance_chat_messages"

    id = Column(String(64), primary_key=True)
    session_id = Column(String(64), ForeignKey("insurance_chat_sessions.id"), nullable=False, index=True)
    user_id = Column(String(64), nullable=False, index=True)
    query = Column(Text, nullable=False)
    answer = Column(Text, default="")
    sources = Column(JSONB, default=[])
    filters = Column(JSONB)
    dify_message_id = Column(String(64), index=True)
    feedback = Column(String(32), index=True)
    correction = Column(Text)
    created_at = Column(TIMESTAMP, server_default=func.now(), index=True)
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())


class DocumentMetadata(db.Model):
    """文档元数据（编号、标签、险种、保司）。Phase 7 创建。"""
    __tablename__ = "document_metadata"

    id = Column(Integer, primary_key=True, autoincrement=True)
    dify_document_id = Column(String(64), nullable=False)
    dataset_id = Column(String(64), nullable=False)
    doc_number = Column(String(32))
    insurance_type = Column(String(32))
    company = Column(String(64))
    tags = Column(JSONB, default=[])
    created_at = Column(TIMESTAMP, server_default=func.now())
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())


class DatasourceConfig(db.Model):
    """保司 API 数据源配置。Phase 7 创建。"""
    __tablename__ = "datasource_configs"

    id = Column(Integer, primary_key=True, autoincrement=True)
    name = Column(String(128), nullable=False)
    api_url = Column(String(512), nullable=False)
    api_key_encrypted = Column(Text)
    sync_frequency = Column(String(32))
    insurance_type = Column(String(32))
    last_sync_at = Column(TIMESTAMP)
    last_sync_status = Column(String(16))
    last_sync_count = Column(Integer)
    status = Column(String(16), default="active")
    created_at = Column(TIMESTAMP, server_default=func.now())


class DatasourceSyncLog(db.Model):
    """数据源同步日志。Phase 7 创建。"""
    __tablename__ = "datasource_sync_logs"

    id = Column(Integer, primary_key=True, autoincrement=True)
    datasource_id = Column(Integer, nullable=False, index=True)
    status = Column(String(16))
    items_added = Column(Integer, default=0)
    items_updated = Column(Integer, default=0)
    items_deleted = Column(Integer, default=0)
    error_message = Column(Text)
    started_at = Column(TIMESTAMP, server_default=func.now())
    completed_at = Column(TIMESTAMP)