import os
from flask import Blueprint, current_app, send_file, abort

bp = Blueprint("proxy", __name__)


@bp.route("/thumb/<asset_id>")
def thumb(asset_id):
    cfg = current_app.config["APP_CONFIG"]
    safe = os.path.basename(asset_id)
    path = os.path.join(cfg.thumbs_dir, f"{safe}.jpg")
    if not os.path.exists(path):
        abort(404)
    return send_file(path, mimetype="image/jpeg")