"""
Modèle SQLAlchemy — APIClient : clients authentifiés du hub
"""
import enum
import uuid as uuid_lib
from datetime import datetime, timezone
from sqlalchemy import (
    Column, String, JSON, Boolean, DateTime, Enum as SAEnum,
    BigInteger, Integer,
)
from sqlalchemy.orm import relationship
from app.database import Base


class ClientPlan(str, enum.Enum):
    FREE = "free"
    STANDARD = "standard"
    PREMIUM = "premium"


class APIClient(Base):
    __tablename__ = "api_clients"

    # ── Identité ──────────────────────────────────────────────
    id = Column(
        String(36),
        primary_key=True,
        default=lambda: str(uuid_lib.uuid4()),
        index=True,
    )
    name = Column(String(256), nullable=False)

    # ── Authentification ──────────────────────────────────────
    api_key_hash = Column(String(64), nullable=False, unique=True, index=True)

    # ── Permissions ───────────────────────────────────────────
    scopes = Column(JSON, nullable=False, default=list)
    plan = Column(
        SAEnum(ClientPlan),
        default=ClientPlan.FREE,
        nullable=False,
    )
    is_active = Column(Boolean, default=True, nullable=False)

    # ── Quota tracking ─────────────────────────────────────────
    storage_used_bytes = Column(BigInteger, default=0, nullable=False)
    quota_storage_mb = Column(Integer, default=500, nullable=False)
    quota_images = Column(Integer, default=1000, nullable=False)

    # ── Timestamps ────────────────────────────────────────────
    created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(
        DateTime,
        default=lambda: datetime.now(timezone.utc),
        onupdate=lambda: datetime.now(timezone.utc),
    )

    # ── Relations (ajoutée par Livrable 1.2) ──────────────────
    images = relationship(
        "Image",
        back_populates="client",
        cascade="all, delete-orphan",
    )

    def __repr__(self) -> str:
        return f"<APIClient id={self.id} name={self.name} plan={self.plan}>"

    def has_scope(self, scope: str) -> bool:
        """Vérifie si le client possède le scope demandé."""
        return scope in (self.scopes or [])