"""
網路硬碟 Model
一個員工對應一個 NAS 帳號
"""
from datetime import datetime
from sqlalchemy import Column, Integer, String, Boolean, DateTime, ForeignKey, UniqueConstraint
from sqlalchemy.orm import relationship

from app.db.base import Base


class NetworkDrive(Base):
    """網路硬碟表"""

    __tablename__ = "tenant_network_drives"
    __table_args__ = (
        UniqueConstraint("employee_id", name="uq_network_drive_employee"),
    )

    id = Column(Integer, primary_key=True, index=True)
    employee_id = Column(Integer, ForeignKey("tenant_employees.id", ondelete="CASCADE"), nullable=False, unique=True, index=True)

    # 一個員工只有一個 NAS 帳號
    drive_name = Column(String(100), unique=True, nullable=False, comment="NAS 帳號名稱 (與 username_base 相同)")
    quota_gb = Column(Integer, nullable=False, comment="配額 (GB),取所有身份中的最高職級")

    # 訪問路徑
    webdav_url = Column(String(255), comment="WebDAV 路徑")
    smb_url = Column(String(255), comment="SMB 路徑")

    # 通用欄位
    is_active = Column(Boolean, default=True, nullable=False, comment="是否啟用")
    edit_by = Column(String(100), nullable=True, comment="最後編輯者")
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False, comment="建立時間")
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False, comment="更新時間")

    # 關聯
    employee = relationship("Employee", back_populates="network_drive")

    def __repr__(self):
        return f"<NetworkDrive {self.drive_name} - {self.quota_gb}GB>"

    @property
    def webdav_path(self) -> str:
        """WebDAV 完整路徑"""
        return self.webdav_url or f"https://nas.lab.taipei/webdav/{self.drive_name}"

    @property
    def smb_path(self) -> str:
        """SMB 完整路徑"""
        return self.smb_url or f"\\\\10.1.0.30\\{self.drive_name}"

    def update_quota_from_job_level(self, job_level: str) -> None:
        """根據職級更新配額"""
        from app.core.config import settings

        quota_mapping = {
            "Junior": settings.NAS_QUOTA_JUNIOR,
            "Mid": settings.NAS_QUOTA_MID,
            "Senior": settings.NAS_QUOTA_SENIOR,
            "Manager": settings.NAS_QUOTA_MANAGER,
        }

        new_quota = quota_mapping.get(job_level, settings.NAS_QUOTA_JUNIOR)

        # 只在配額增加時更新 (不降低配額)
        if new_quota > self.quota_gb:
            self.quota_gb = new_quota