from sqlalchemy import create_engine, Column, Integer, String, DateTime, Float, JSON
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from datetime import datetime
from config import DATABASE_URL, HISTORY_LIMIT

Base = declarative_base()


class Report(Base):
    __tablename__ = 'reports'

    id = Column(Integer, primary_key=True)
    report_id = Column(String, unique=True)
    defect_type = Column(String)
    description = Column(String)
    features = Column(JSON)
    created_at = Column(DateTime, default=datetime.utcnow)


engine = create_engine(DATABASE_URL)
Base.metadata.create_all(engine)
Session = sessionmaker(bind=engine)


def save_report(report):
    session = Session()
    new_report = Report(
        report_id=report['编号'],
        defect_type=report['缺陷类型'],
        description=report['缺陷描述'],
        features=report['特征详情']
    )
    session.add(new_report)
    session.commit()
    session.close()


def get_report_history():
    session = Session()
    reports = session.query(Report).order_by(
        Report.created_at.desc()).limit(HISTORY_LIMIT).all()
    session.close()
    return reports