"""User-submitted reports against listings (spam/abuse moderation)."""
from datetime import datetime
from app.utils.time import utcnow
from app.extensions import db
from app.models.enums import ReportReason


class Report(db.Model):
    __tablename__ = "reports"

    id = db.Column(db.BigInteger().with_variant(db.Integer, "sqlite"),
                   primary_key=True, autoincrement=True)
    listing_id = db.Column(db.BigInteger().with_variant(db.Integer, "sqlite"),
                           db.ForeignKey("listings.id"), nullable=False, index=True)
    reporter_id = db.Column(db.BigInteger().with_variant(db.Integer, "sqlite"),
                            db.ForeignKey("users.id"), nullable=False, index=True)
    reason = db.Column(db.Enum(ReportReason), nullable=False)
    note = db.Column(db.Text, nullable=True)
    created_at = db.Column(db.DateTime, default=utcnow, nullable=False)

    listing = db.relationship("Listing", backref=db.backref("reports", lazy="dynamic"))
    reporter = db.relationship("User", backref=db.backref("reports_filed", lazy="dynamic"))

    __table_args__ = (
        db.UniqueConstraint("reporter_id", "listing_id", name="uq_report_reporter_listing"),
    )

    def __repr__(self):
        return f"<Report L{self.listing_id} by u{self.reporter_id} {self.reason.value}>"