"""设备数据模型"""
from sqlalchemy import Column, BigInteger, String, Integer, Float, Text, TIMESTAMP, ForeignKey, JSON
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.core.database import Base


class OLTDevice(Base):
    __tablename__ = "olt_devices"

    id = Column(BigInteger, primary_key=True, index=True)
    ip_address = Column(String(45), nullable=False)
    username = Column(String(100), nullable=False)
    password = Column(Text, nullable=False)
    slot_command = Column(String(50), nullable=False)
    region = Column(String(100), index=True)
    location = Column(String(200))
    description = Column(Text)
    created_at = Column(TIMESTAMP, server_default=func.now())
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())


class ONUDevice(Base):
    __tablename__ = "onu_devices"

    id = Column(BigInteger, primary_key=True, index=True)
    mac_address = Column(String(17), nullable=False, index=True)
    olt_id = Column(BigInteger, ForeignKey("olt_devices.id"))
    slot_number = Column(Integer)
    port_number = Column(Integer)
    port_id = Column(String(20))  # 完整端口标识，如 "1/0/2:4"
    # OLT 返回的额外信息
    loid = Column(String(50))  # LOID
    model = Column(String(100))  # 设备型号
    distance_m = Column(Integer)  # 距离（米）
    region = Column(String(100), index=True)
    school_name = Column(String(200), index=True)
    building = Column(String(100))
    place_type = Column(String(50))  # 场所类型
    room_number = Column(String(50))
    notes = Column(Text)  # 备注
    tags = Column(Text)  # 标签（逗号分隔），如 "重点设备,考试用"
    latitude = Column(Float, nullable=True)  # 纬度
    longitude = Column(Float, nullable=True)  # 经度
    created_at = Column(TIMESTAMP, server_default=func.now())
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())

    # 关联状态历史
    status_history = relationship("DeviceStatusHistory", back_populates="device", lazy="selectin")


class DeviceStatusHistory(Base):
    __tablename__ = "device_status_history"

    id = Column(BigInteger, primary_key=True, index=True)
    onu_device_id = Column(BigInteger, ForeignKey("onu_devices.id"))
    status = Column(String(20), nullable=False)  # online, offline
    distance_m = Column(Integer)  # 距离（米）
    checked_at = Column(TIMESTAMP, nullable=False)
    response_data = Column(Text)
    created_at = Column(TIMESTAMP, server_default=func.now())

    device = relationship("ONUDevice", back_populates="status_history")


class DuplicateMac(Base):
    """重复 MAC 地址记录（同一 MAC 出现在多个端口）"""
    __tablename__ = "duplicate_macs"

    id = Column(BigInteger, primary_key=True, index=True)
    olt_id = Column(BigInteger, ForeignKey("olt_devices.id"), nullable=False)
    mac_address = Column(String(17), nullable=False, index=True)
    # 所有出现的端口列表，JSON 格式: [{"port_id": "1/0/1:1", "status": "online"}, ...]
    ports = Column(JSON, nullable=False)
    first_seen_at = Column(TIMESTAMP, server_default=func.now())
    last_seen_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())


class DeviceDailySnapshot(Base):
    """设备每日状态快照（用于趋势图，避免全量扫描历史表）"""
    __tablename__ = "device_daily_snapshots"

    id = Column(BigInteger, primary_key=True, index=True)
    snapshot_date = Column(String(10), nullable=False, index=True)  # YYYY-MM-DD
    total = Column(Integer, nullable=False, default=0)
    online = Column(Integer, nullable=False, default=0)
    offline = Column(Integer, nullable=False, default=0)
    created_at = Column(TIMESTAMP, server_default=func.now())


class NewDevice(Base):
    """新发现设备（OLT 扫描到但尚未补全信息的设备）"""
    __tablename__ = "new_devices"

    id = Column(BigInteger, primary_key=True, index=True)
    onu_device_id = Column(BigInteger, ForeignKey("onu_devices.id"), nullable=False, unique=True)
    olt_id = Column(BigInteger, ForeignKey("olt_devices.id"), nullable=False)
    discovered_at = Column(TIMESTAMP, server_default=func.now())


class OpticalPowerHistory(Base):
    """光功率历史记录"""
    __tablename__ = "optical_power_history"

    id = Column(BigInteger, primary_key=True, index=True)
    onu_device_id = Column(BigInteger, ForeignKey("onu_devices.id"), nullable=False, index=True)
    power_in = Column(String(20))   # 接收光功率 dBm
    power_out = Column(String(20))  # 发送光功率 dBm
    recorded_at = Column(TIMESTAMP, nullable=False, server_default=func.now())


class DeviceReplacement(Base):
    """设备更换记录"""
    __tablename__ = "device_replacements"

    id = Column(BigInteger, primary_key=True, index=True)
    onu_device_id = Column(BigInteger, ForeignKey("onu_devices.id"), nullable=False, index=True)
    old_mac = Column(String(17), nullable=False)
    new_mac = Column(String(17), nullable=False)
    reason = Column(Text)
    operator_id = Column(String(100))   # 操作人 user_id
    operator_name = Column(String(100))
    replaced_at = Column(TIMESTAMP, nullable=False, server_default=func.now())
    created_at = Column(TIMESTAMP, server_default=func.now())