from __future__ import annotations

from datetime import datetime

from sqlalchemy import Boolean, Column, DateTime, Float, ForeignKey, Integer, String, Text
from sqlalchemy.orm import relationship

from backend.app.db.database import Base


class Product(Base):
    """Table principale des produits suivis."""
    __tablename__ = "products"

    id = Column(Integer, primary_key=True, index=True)
    boutique = Column(String(32), nullable=False)
    url = Column(Text, nullable=False)
    asin = Column(String(20), nullable=False, index=True)
    titre = Column(Text, nullable=True)
    url_image = Column(Text, nullable=True)
    categorie = Column(String(64), nullable=True)
    type = Column(String(64), nullable=True)
    actif = Column(Boolean, default=True)
    cree_le = Column(DateTime, default=datetime.utcnow)
    modifie_le = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    snapshots = relationship("ProductSnapshot", back_populates="product")


class ScrapeRun(Base):
    """Journal des runs de scraping pour surveiller taux de succès."""
    __tablename__ = "scrape_runs"

    id = Column(Integer, primary_key=True, index=True)
    demarre_le = Column(DateTime, default=datetime.utcnow)
    termine_le = Column(DateTime, nullable=True)
    statut = Column(String(32), default="pending")
    nb_total = Column(Integer, default=0)
    nb_ok = Column(Integer, default=0)
    nb_echec = Column(Integer, default=0)
    chemin_log = Column(Text, nullable=True)

    snapshots = relationship("ProductSnapshot", back_populates="scrape_run")


class ProductSnapshot(Base):
    """Historique des snapshots capturés pour chaque produit."""
    __tablename__ = "product_snapshots"

    id = Column(Integer, primary_key=True, index=True)
    produit_id = Column(Integer, ForeignKey("products.id"), nullable=False)
    run_scrap_id = Column(Integer, ForeignKey("scrape_runs.id"), nullable=True)
    scrape_le = Column(DateTime, default=datetime.utcnow)
    prix_actuel = Column(Float, nullable=True)
    prix_conseille = Column(Float, nullable=True)
    prix_min_30j = Column(Float, nullable=True)
    etat_stock = Column(String(256), nullable=True)
    en_stock = Column(Boolean, nullable=True)
    note = Column(Float, nullable=True)
    nombre_avis = Column(Integer, nullable=True)
    prime = Column(Boolean, nullable=True)
    choix_amazon = Column(Boolean, nullable=True)
    offre_limitee = Column(Boolean, nullable=True)
    exclusivite_amazon = Column(Boolean, nullable=True)
    # Données étendues (stockées en JSON)
    a_propos = Column(Text, nullable=True)  # JSON array
    description = Column(Text, nullable=True)
    carateristique = Column(Text, nullable=True)  # JSON object
    details = Column(Text, nullable=True)  # JSON object
    chemin_json_brut = Column(Text, nullable=True)
    statut_scrap = Column(String(32), default="ok")
    message_erreur = Column(Text, nullable=True)

    product = relationship("Product", back_populates="snapshots")
    scrape_run = relationship("ScrapeRun", back_populates="snapshots")