from sqlalchemy import *
from database import DATETIME,Base,Column,Integer,String


class StudentInfo(Base):
    """学生基本信息表"""
    __tablename__ = 'student_info'

    student_id = Column(String(20), primary_key=True, comment='学生id')
    student_name = Column(String(50), nullable=False, comment='学生姓名')
    gender = Column(Enum('男', '女'), nullable=False, comment='性别')
    id_card = Column(String(18), nullable=False, comment='身份证号')
    birthday = Column(Date, nullable=False, comment='出生日期')
    ethnicity = Column(String(20), nullable=False, comment='民族')
    region_id = Column(String(20), ForeignKey('region.regio_id'),nullable=False, comment='籍贯编码，连接地区表')
    phone = Column(String(11), nullable=False, comment='手机号')
    major = Column(String(20), nullable=False, comment='就读专业')
    class_id = Column(String(20),  nullable=False, comment='班级，连接班级表')
    enrollment_date = Column(Date, nullable=False, comment='入学日期')
    graduation_date = Column(Date, nullable=False, comment='毕业日期')
    student_status = Column(Enum('在读', '休学', '退学', '毕业'), nullable=False, comment='学籍状态')
    education_level = Column(Enum('大专', '本科', '硕士研究生', '博士研究生'), nullable=False, comment='学历')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除，0=未删除, 1=已删除')
    create_time = Column(Date, nullable=False, comment='创建时间')
    update_time = Column(Date, nullable=False, comment='更新时间')


class Region(Base):
    """地区维度表"""
    __tablename__ = 'region'

    regio_id = Column(String(50), primary_key=True, comment='地区编码')
    province = Column(String(50), nullable=False, comment='省/直辖市')
    city = Column(String(50), nullable=False, comment='市')
    district = Column(String(50), nullable=False, comment='区，县')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除：0=未删除, 1=已删除')
    create_time = Column(DATETIME, nullable=False, comment='创建时间')
    update_time = Column(DATETIME, nullable=False, comment='更新时间')

class EmploymentInfo(Base):
    """学生就业信息表"""
    __tablename__ = 'employment_info'

    emp_id = Column(String(50), primary_key=True, comment='就业记录ID')
    student_id = Column(String(20), ForeignKey('student_info.student_id'), nullable=False,
                        comment='学号，连接学生表')
    regio_id = Column(String(50), ForeignKey('region.regio_id'), nullable=False, comment='就业地区编码，连接地区表')
    job_name = Column(String(50), nullable=False, comment='就业岗位名称')
    company_name = Column(String(50), nullable=False, comment='就业公司名称')
    salary = Column(Float, nullable=False, comment='就业月薪（元）')
    offer_date = Column(Date, nullable=False, comment='offer下发/签约时间')
    part_time = Column(Date, nullable=False, comment='就业时间')
    resume_open_date = Column(Date, nullable=True, comment='开放简历时间')
    employment_status = Column(Enum('1', '2', '3', '4'), nullable=False,
                               comment='就业状态：1=未就业, 2,=已就业，3=升学, 4=灵活就业')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除：0=未删除, 1=已删除')
    create_time = Column(DATETIME, nullable=False, comment='创建时间')
    update_time = Column(DATETIME, nullable=False, comment='更新时间')

class StudentScore(Base):
    """学生考核成绩表"""
    __tablename__ = 'student_score'

    score_id = Column(Integer, primary_key=True, autoincrement=True, comment='成绩记录自增主键')
    student_id = Column(String(20), ForeignKey('student_info.student_id'),nullable=False,
                        comment='学号，连接学生表')
    course_id = Column(String(20),  ForeignKey('course_info.course_id'),nullable=False, comment='课程编号，连接课程表')
    exam_type = Column(Enum('期中', '期末', '月考', '周考', '模拟考'), nullable=False,
                       comment='考试类型：1=期中, 2=期末, 3=月考, 4=周考，5=模拟考')
    score = Column(Float, nullable=True, comment='考试分数0~100，缺考为NULL')
    score_level = Column(String(10), nullable=False, comment='成绩等级')
    is_pass = Column(Enum('0', '1'), nullable=False, comment='是否及格：1=及格, 0=不及格（可由score>=60判断）')
    exam_date = Column(Date, nullable=False, comment='考试日期')
    exam_category = Column(Enum('首考', '重考', '补考'), nullable=False, comment='考试分类：1=首考, 2=补考, 3=重考')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除：0=未删除, 1=已删除')
    create_time = Column(DATETIME, nullable=False, comment='创建时间')
    update_time = Column(DATETIME, nullable=False, comment='更新时间')

class ClassInfo(Base):
    """班级信息表"""
    __tablename__ = 'class_info'

    class_id = Column(String(50), primary_key=True, comment='班级业务编码')
    class_name = Column(String(50), nullable=False, comment='班级名称')
    grade_year = Column(Date, nullable=False, comment='入学年级')
    status = Column(Enum('1', '2', '3'), nullable=False, comment='班级状态：1=在读 2=已毕业 3=已停用')
    tags = Column(String(100), nullable=False, comment='存储多维标签，例如：["重点班", "科技特长", "2026届"]')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除：0=未删除, 1=已删除')
    create_time = Column(DATETIME, nullable=False, comment='创建时间')
    update_time = Column(DATETIME, nullable=False, comment='更新时间')

class TeacherInfo(Base):
    """教师基本信息表"""
    __tablename__ = 'teacher_info'

    teacher_id = Column(String(20), primary_key=True, comment='教师编号')
    teacher_name = Column(String(20), nullable=False, comment='教师姓名')
    gender = Column(Enum('男', '女'), nullable=False, comment='性别')
    birthday = Column(Date, nullable=False, comment='出生日期')
    region_id = Column(String(50), ForeignKey('region.regio_id'), nullable=False, comment='籍贯地区编码')
    email = Column(String(50), nullable=False, comment='邮箱')
    phone = Column(String(11), nullable=False, comment='手机号码')
    graduation_school = Column(String(50), nullable=False, comment='毕业学校')
    teacher_rank = Column(Enum('1', '2', '3', '4'), nullable=False, comment='职称：1=初级, 2=中级, 3=高级, 4=特级')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除：0=未删除, 1=已删除')
    create_time = Column(DATETIME, nullable=False, comment='创建时间')
    update_time = Column(DATETIME, nullable=False, comment='更新时间')

class CourseInfo(Base):
    """课程基础信息"""
    __tablename__ = 'course_info'

    course_id = Column(String(30), primary_key=True, comment='课程编号')
    course_name = Column(String(30), nullable=False, comment='课程名称')
    course_type = Column(Enum('1', '2', '3'), nullable=False, comment='课程类型：1 必修课 2 选修课 3 实训课')
    is_deleted = Column(Enum('0', '1'), nullable=False, comment='逻辑删除：0=未删除, 1=已删除')
    create_time = Column(DATETIME, nullable=False, comment='创建时间')
    update_time = Column(DATETIME, nullable=False, comment='更新时间')