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from flask_sqlalchemy import SQLAlchemy
from datetime import datetime

db = SQLAlchemy()


class Board(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    slug = db.Column(db.String(10), unique=True, nullable=False)
    name = db.Column(db.String(50), nullable=False)
    description = db.Column(db.String(200))
    posts = db.relationship("Post", backref="board", lazy=True)


class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    nickname = db.Column(db.String(50), unique=True, nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    last_seen_at = db.Column(db.DateTime, default=datetime.utcnow)
    posts = db.relationship("Post", backref="user", lazy=True)


class PostFile(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    post_id = db.Column(db.Integer, db.ForeignKey("post.id"), nullable=False)
    filename = db.Column(db.String(100), nullable=False)
    original_filename = db.Column(db.String(100), nullable=False)


class Post(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    thread_id = db.Column(
        db.Integer, db.ForeignKey("post.id"), nullable=True
    )  # If null, it's a thread starter
    board_id = db.Column(db.Integer, db.ForeignKey("board.id"), nullable=False)
    user_id = db.Column(
        db.Integer, db.ForeignKey("user.id"), nullable=True
    )  # Nullable for backward compatibility
    content = db.Column(db.Text, nullable=True)
    nickname = db.Column(db.String(50), default="Anonyme")  # Keep for historical posts
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    updated_at = db.Column(db.DateTime, default=datetime.utcnow)  # For bumping
    ip_address = db.Column(db.String(50), nullable=True)

    files = db.relationship("PostFile", backref="post", lazy=True)

    # Relationship to access replies easily
    replies = db.relationship(
        "Post", backref=db.backref("parent", remote_side=[id]), lazy=True
    )


class BannedIP(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    ip_address = db.Column(db.String(50), unique=True, nullable=False)
    reason = db.Column(db.String(200))
    created_at = db.Column(db.DateTime, default=datetime.utcnow)