# app/models.py
from sqlalchemy import Column, Integer, String, Float, DateTime, Text, ForeignKey, JSON, Boolean
from sqlalchemy.orm import relationship
from datetime import datetime
from app.database import Base


class Project(Base):
    """Проект — один загруженный PDF."""
    __tablename__ = "projects"
    
    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, index=True)
    pdf_filename = Column(String, nullable=False)
    status = Column(String, default="uploaded")  # uploaded / processing / completed / error
    created_at = Column(DateTime, default=datetime.utcnow)
    completed_at = Column(DateTime, nullable=True)
    error_message = Column(Text, nullable=True)
    
    # Пути к файлам
    output_folder = Column(String, nullable=True)
    
    pages = relationship("Page", back_populates="project", cascade="all, delete-orphan")
    issues = relationship("Issue", back_populates="project", cascade="all, delete-orphan")


class Page(Base):
    """Страница PDF."""
    __tablename__ = "pages"
    
    id = Column(Integer, primary_key=True, index=True)
    project_id = Column(Integer, ForeignKey("projects.id"))
    page_number = Column(Integer, nullable=False)
    png_path = Column(String, nullable=True)
    dzi_path = Column(String, nullable=True)
    ocr_data = Column(JSON, nullable=True)  # full_ocr_results для этой страницы
    vlm_description = Column(Text, nullable=True)
    width = Column(Integer, nullable=True)
    height = Column(Integer, nullable=True)
    
    project = relationship("Project", back_populates="pages")
    issues = relationship("Issue", back_populates="page")


class Issue(Base):
    """Замечание QC — одна проблема на чертеже."""
    __tablename__ = "issues"
    
    id = Column(Integer, primary_key=True, index=True)
    project_id = Column(Integer, ForeignKey("projects.id"))
    page_id = Column(Integer, ForeignKey("pages.id"))
    
    issue_type = Column(String, nullable=False)  # DIMENSION_OVERLAP, LOW_CONFIDENCE, etc.
    severity = Column(String, nullable=False)    # error / warning / info
    message = Column(Text, nullable=False)
    
    # Координаты bbox на PNG (в пикселях)
    bbox_x1 = Column(Float, nullable=True)
    bbox_y1 = Column(Float, nullable=True)
    bbox_x2 = Column(Float, nullable=True)
    bbox_y2 = Column(Float, nullable=True)
    
    # Дополнительные данные
    dimension_text = Column(String, nullable=True)  # Текст размера (если применимо)
    confidence = Column(Float, nullable=True)        # OCR confidence
    extra_data = Column(JSON, nullable=True)         # Всё остальное
    source = Column(String, nullable=True)           # "rules" или "vlm"
    
    created_at = Column(DateTime, default=datetime.utcnow)
    
    project = relationship("Project", back_populates="issues")
    page = relationship("Page", back_populates="issues")
    feedback = relationship("Feedback", back_populates="issue", uselist=False)


class Feedback(Base):
    """Feedback проектировщика — правда ли это замечание."""
    __tablename__ = "feedback"
    
    id = Column(Integer, primary_key=True, index=True)
    issue_id = Column(Integer, ForeignKey("issues.id"), unique=True)
    
    # True = реальная проблема, False = ложное срабатывание, None = не размечено
    is_true_positive = Column(Boolean, nullable=True)
    
    # Почему (опционально)
    comment = Column(Text, nullable=True)
    
    # Что сделал проектировщик
    action_taken = Column(String, nullable=True)  # fixed / ignored / not_sure
    
    created_at = Column(DateTime, default=datetime.utcnow)
    user_id = Column(String, nullable=True)  # Для многопользовательского режима
    
    issue = relationship("Issue", back_populates="feedback")