# 数据库模型 - 使用字段编码
from sqlalchemy import Column, String, Float, Boolean, DateTime, Integer, Text, ForeignKey, Date, UniqueConstraint
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.core.database import Base
import uuid


def generate_uuid():
    """生成 UUID 字符串"""
    return str(uuid.uuid4())


class User(Base):
    __tablename__ = "users"

    # f99 系统字段
    f99_90_id = Column(String(36), primary_key=True, default=generate_uuid)
    user_code = Column(String(10), unique=True, nullable=True, index=True)  # 用户编码
    f99_91_user_id = Column(String(36), unique=True, nullable=False, index=True)
    f01_01_name = Column(String(255), unique=True, nullable=False, index=True)  # username
    email = Column(String(255), unique=True, nullable=True, index=True)
    phone = Column(String(50), nullable=True)
    avatar = Column(String(500), nullable=True)
    address = Column(String(500), nullable=True)
    bio = Column(Text, nullable=True)
    password = Column(String(255), nullable=False)
    role = Column(String(50), default="user")
    # 时间字段
    f99_92_created_at = Column(DateTime(timezone=True), server_default=func.now())
    f99_93_updated_at = Column(DateTime(timezone=True), onupdate=func.now())
    # 新增字段
    f99_94_level = Column(String(20), default="青铜")  # 会员等级
    f99_95_ai_count = Column(Integer, default=0)  # ai识别次数
    f99_96_search_count = Column(Integer, default=0)  # 寻号使用次数
    f99_97_collection_count = Column(Integer, default=0)  # 藏品数量
    f01_06_phone_verified = Column(Boolean, default=False)  # 手机号已核验
    f99_98_login_count = Column(Integer, default=0)  # 登录次数
    f99_99_last_login = Column(DateTime(timezone=True), nullable=True)  # 最后登录时间
    f01_07_gender = Column(String(10), nullable=True)  # 性别
    f01_08_birthday = Column(Date, nullable=True)  # 生日
    f01_09_region = Column(String(100), nullable=True)  # 地区
    f01_10_realname_verified = Column(Boolean, default=False)  # 实名认证
    f99_100_points = Column(Integer, default=0)  # 积分
    f01_11_balance = Column(Float, default=0)  # 余额
    f01_12_total_amount = Column(Float, default=0)  # 累计金额
    f01_13_invite_code = Column(String(20), nullable=True)  # 邀请码（自己的邀请码）
    f99_101_invited_count = Column(Integer, default=0)  # 通过自己邀请码注册的用户数量

    collections = relationship("Collection", back_populates="user", cascade="all, delete-orphan")
    operations = relationship("Operation", back_populates="user", cascade="all, delete-orphan")
    custom_fields = relationship("CustomField", back_populates="user", cascade="all, delete-orphan")


class Collection(Base):
    __tablename__ = "collections"

    # f99 系统字段
    f99_90_id = Column(String(36), primary_key=True, default=generate_uuid)
    f99_91_user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    f99_92_created_at = Column(DateTime(timezone=True), server_default=func.now(), index=True)
    f99_93_updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # f01 基本信息
    f01_01_name = Column(String(255), nullable=False)
    f01_02_code = Column(String(50), nullable=True, index=True)
    f01_03_category = Column(String(100), nullable=False, index=True)
    f01_04_status = Column(String(50), default="in_collection", index=True)
    f01_05_remark = Column(Text, nullable=True)

    # f02 详细字段
    f02_10_prefix_serial = Column(String(50), nullable=True, index=True)
    f02_11_version = Column(String(100), nullable=True, index=True)
    f02_12_packaging = Column(String(100), nullable=True, index=True)
    f02_13_rarity = Column(String(50), nullable=True, index=True)  # 珍惜度
    f02_14_number_category = Column(String(20), nullable=True, index=True)  # 号码分类

    # f03 评级信息
    f03_20_is_graded = Column(Boolean, default=False, index=True)
    f03_21_grading_company = Column(String(100), nullable=True, index=True)
    f03_22_grading_score = Column(String(20), nullable=True, index=True)
    f03_23_three_star = Column(Boolean, default=False, index=True)

    # f04 特殊信息
    f04_30_special_mark = Column(String(200), nullable=True, index=True)
    f04_31_serial_feature = Column(String(100), nullable=True, index=True)
    f04_32_issuer = Column(String(100), nullable=True, index=True)
    f04_33_issue_year = Column(String(20), nullable=True, index=True)
    f04_34_material = Column(String(50), nullable=True)
    f04_35_denomination = Column(String(20), nullable=True)
    f04_36_issue_quantity = Column(String(50), nullable=True)

    # f05 价格信息
    f05_40_cost_price = Column(Float, nullable=True, index=True)
    f05_41_target_price = Column(Float, nullable=True, index=True)
    f05_42_goal_price = Column(Float, nullable=True)
    f05_43_repair_fee = Column(Float, nullable=True)
    f05_44_grading_fee = Column(Float, nullable=True)

    # f06 其他信息
    f06_50_purpose = Column(String(100), nullable=True)

    user = relationship("User", back_populates="collections")
    images = relationship("CollectionImage", back_populates="collection", cascade="all, delete-orphan")
    operations = relationship("Operation", back_populates="collection", cascade="all, delete-orphan")


class CollectionImage(Base):
    __tablename__ = "collection_images"

    id = Column(String(36), primary_key=True, default=generate_uuid)
    collection_id = Column(String(36), ForeignKey("collections.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    filename = Column(String(255), nullable=False)
    original_name = Column(String(255), nullable=True)
    path = Column(String(500), nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    collection = relationship("Collection", back_populates="images")


class Operation(Base):
    __tablename__ = "operations"

    f99_90_id = Column(String(36), primary_key=True, default=generate_uuid)
    f99_91_user_id = Column(String(36), ForeignKey("collections.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    f99_92_user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    type = Column(String(50), nullable=False, index=True)
    price = Column(Float, nullable=True)
    note = Column(Text, nullable=True)
    f99_93_created_at = Column(DateTime(timezone=True), server_default=func.now(), index=True)

    collection = relationship("Collection", back_populates="operations")
    user = relationship("User", back_populates="operations")


class CustomField(Base):
    __tablename__ = "custom_fields"

    id = Column(String(36), primary_key=True, default=generate_uuid)
    user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    name = Column(String(100), nullable=False)
    field_type = Column(String(50), default="text")
    options = Column(Text, nullable=True)
    required = Column(Boolean, default=False)
    visible = Column(Boolean, default=True)
    sort_order = Column(Integer, default=0)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    user = relationship("User", back_populates="custom_fields")


# 资讯模型
class Information(Base):
    __tablename__ = "information"

    id = Column(String(36), primary_key=True, default=generate_uuid)
    user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    
    # 信息类型: seek-寻配号, deal-成交数据, publish-发布
    info_type = Column(String(20), nullable=False, index=True)
    
    # 标题
    title = Column(String(255), nullable=False)
    
    # 内容描述
    content = Column(Text, nullable=True)
        
    # 关联藏品ID
    collection_id = Column(String(36), ForeignKey("collections.f99_90_id", ondelete="SET NULL"), nullable=True)
    
    # 期望条件 (寻配号用)
    expect_category = Column(String(100), nullable=True)  # 期望类别
    expect_version = Column(String(100), nullable=True)  # 期望版别
    expect_packaging = Column(String(100), nullable=True)  # 期望包装
    expect_number = Column(String(50), nullable=True)  # 期望号码
    expect_price_min = Column(Float, nullable=True)  # 期望价格区间
    expect_price_max = Column(Float, nullable=True)
    
    # 成交价格 (成交数据用)
    deal_price = Column(Float, nullable=True)
    deal_date = Column(Date, nullable=True)
    
    # 状态: active-有效, closed-已关闭, expired-已过期
    status = Column(String(20), default="active", index=True)
    
    # 匹配状态: pending-尚未匹配, matched-已经匹配
    is_matched = Column(String(20), default="pending", index=True)
    
    # 匹配的用户ID（当用户愿意交换联系方式时）
    matched_user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="SET NULL"), nullable=True)
    
    # 匹配者的联系方式（只有发布者和匹配者可见）
    matched_contact = Column(String(100), nullable=True)
    
    # 浏览/联系次数
    view_count = Column(Integer, default=0)
    contact_count = Column(Integer, default=0)
    
    created_at = Column(DateTime(timezone=True), server_default=func.now(), index=True)
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    user = relationship("User", foreign_keys=[user_id])
    collection = relationship("Collection")


# 资讯评论/留言
class InformationComment(Base):
    __tablename__ = "information_comments"

    id = Column(String(36), primary_key=True, default=generate_uuid)
    information_id = Column(String(36), ForeignKey("information.id", ondelete="CASCADE"), nullable=False, index=True)
    user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    content = Column(Text, nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    user = relationship("User", foreign_keys=[user_id])


# 资讯联系方式查看记录
class InformationContactView(Base):
    __tablename__ = "information_contact_views"

    id = Column(String(36), primary_key=True, default=generate_uuid)
    information_id = Column(String(36), ForeignKey("information.id", ondelete="CASCADE"), nullable=False, index=True)
    viewer_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    viewer = relationship("User", foreign_keys=[viewer_id])


# 资讯关联用户 (收藏/点赞)
class InformationLike(Base):
    __tablename__ = "information_likes"

    id = Column(String(36), primary_key=True, default=generate_uuid)
    information_id = Column(String(36), ForeignKey("information.id", ondelete="CASCADE"), nullable=False, index=True)
    user_id = Column(String(36), ForeignKey("users.f99_90_id", ondelete="CASCADE"), nullable=False, index=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    __table_args__ = (
        UniqueConstraint('information_id', 'user_id', name='uq_information_user'),
    )


# 角色常量
class UserRole:
    ADMIN = "admin"      # 管理员：全部权限
    EDITOR = "editor"    # 信息员：可发布信息、管理资讯
    USER = "user"        # 普通用户：基本功能

    @classmethod
    def get_role_name(cls, role):
        names = {
            cls.ADMIN: "管理员",
            cls.EDITOR: "信息员",
            cls.USER: "用户"
        }
        return names.get(role, "用户")