from sqlalchemy import Column, Integer, String, Boolean, DateTime, Text, ForeignKey, Enum
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.database import Base
import enum

class MembershipType(str, enum.Enum):
    FREE = "free"
    PRO = "pro"

class AccountStatus(str, enum.Enum):
    ACTIVE = "active"      # 可用
    IN_USE = "in_use"      # 使用中
    DISABLED = "disabled"  # 禁用
    EXPIRED = "expired"    # 过期

class KeyStatus(str, enum.Enum):
    UNUSED = "unused"      # 未使用
    ACTIVE = "active"      # 已激活(主密钥)
    MERGED = "merged"      # 已合并到主密钥
    REVOKED = "revoked"    # 已撤销
    DISABLED = "disabled"  # 禁用
    EXPIRED = "expired"    # 过期


class CursorAccount(Base):
    """Cursor 账号池"""
    __tablename__ = "cursor_accounts"

    id = Column(Integer, primary_key=True, autoincrement=True)
    email = Column(String(255), unique=True, nullable=False, comment="邮箱")
    access_token = Column(Text, nullable=False, comment="访问令牌")
    refresh_token = Column(Text, nullable=True, comment="刷新令牌")
    workos_session_token = Column(Text, nullable=True, comment="WorkOS会话令牌")
    membership_type = Column(Enum(MembershipType), default=MembershipType.PRO, comment="会员类型")
    status = Column(Enum(AccountStatus), default=AccountStatus.ACTIVE, comment="状态")

    # 使用统计
    usage_count = Column(Integer, default=0, comment="使用次数")
    last_used_at = Column(DateTime, nullable=True, comment="最后使用时间")
    current_key_id = Column(Integer, ForeignKey("activation_keys.id"), nullable=True, comment="当前使用的激活码")

    # 备注
    remark = Column(String(500), nullable=True, comment="备注")

    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())


class ActivationKey(Base):
    """激活码"""
    __tablename__ = "activation_keys"

    id = Column(Integer, primary_key=True, autoincrement=True)
    key = Column(String(64), unique=True, nullable=False, index=True, comment="激活码")
    status = Column(Enum(KeyStatus), default=KeyStatus.UNUSED, comment="状态")

    # 套餐类型
    membership_type = Column(Enum(MembershipType), default=MembershipType.PRO, comment="套餐类型: free=Auto池, pro=Pro池")

    # 密钥合并关系
    master_key_id = Column(Integer, ForeignKey("activation_keys.id"), nullable=True, comment="主密钥ID(如果已合并)")
    device_id = Column(String(255), nullable=True, index=True, comment="绑定的设备ID")

    # 该密钥贡献的资源 (创建时设置，不变)
    duration_days = Column(Integer, default=30, comment="Auto: 该密钥贡献的天数")
    quota_contribution = Column(Integer, default=500, comment="Pro: 该密钥贡献的积分")

    # 额度系统 (仅主密钥使用，累计值)
    quota = Column(Integer, default=500, comment="Pro主密钥: 总额度(累加)")
    quota_used = Column(Integer, default=0, comment="Pro主密钥: 已用额度")

    # 有效期 (仅主密钥使用)
    expire_at = Column(DateTime, nullable=True, comment="Auto主密钥: 到期时间(累加)")

    # 激活信息
    first_activated_at = Column(DateTime, nullable=True, comment="首次激活时间")
    merged_at = Column(DateTime, nullable=True, comment="合并时间")

    # 设备限制 (可换设备，此字段保留但不强制)
    max_devices = Column(Integer, default=3, comment="最大设备数(可换设备)")

    # 当前绑定的账号 (仅主密钥使用)
    current_account_id = Column(Integer, ForeignKey("cursor_accounts.id"), nullable=True)
    current_account = relationship("CursorAccount", foreign_keys=[current_account_id])

    # 统计 (仅主密钥使用)
    switch_count = Column(Integer, default=0, comment="总换号次数")
    last_switch_at = Column(DateTime, nullable=True, comment="最后换号时间")
    merged_count = Column(Integer, default=0, comment="已合并的密钥数量")

    # 备注
    remark = Column(String(500), nullable=True, comment="备注")

    created_at = Column(DateTime, server_default=func.now())
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())

    # 关系
    master_key = relationship("ActivationKey", remote_side=[id], foreign_keys=[master_key_id])

    @property
    def valid_days(self):
        """兼容旧API: duration_days的别名"""
        return self.duration_days or 0


class KeyDevice(Base):
    """激活码绑定的设备"""
    __tablename__ = "key_devices"

    id = Column(Integer, primary_key=True, autoincrement=True)
    key_id = Column(Integer, ForeignKey("activation_keys.id"), nullable=False)
    device_id = Column(String(255), nullable=False, comment="设备标识")
    device_name = Column(String(255), nullable=True, comment="设备名称")
    last_active_at = Column(DateTime, nullable=True, comment="最后活跃时间")
    created_at = Column(DateTime, server_default=func.now())

    key = relationship("ActivationKey")


class GlobalSettings(Base):
    """全局设置"""
    __tablename__ = "global_settings"

    id = Column(Integer, primary_key=True, autoincrement=True)
    key = Column(String(100), unique=True, nullable=False, comment="设置键")
    value = Column(String(500), nullable=False, comment="设置值")
    description = Column(String(500), nullable=True, comment="描述")
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())


class UsageLog(Base):
    """使用日志"""
    __tablename__ = "usage_logs"

    id = Column(Integer, primary_key=True, autoincrement=True)
    key_id = Column(Integer, ForeignKey("activation_keys.id"), nullable=False)
    account_id = Column(Integer, ForeignKey("cursor_accounts.id"), nullable=True)
    action = Column(String(50), nullable=False, comment="操作类型: verify/switch/seamless")
    ip_address = Column(String(50), nullable=True)
    user_agent = Column(String(500), nullable=True)
    success = Column(Boolean, default=True)
    message = Column(String(500), nullable=True)

    created_at = Column(DateTime, server_default=func.now())

    key = relationship("ActivationKey")
    account = relationship("CursorAccount")