from flask import Blueprint, jsonify, request

from api import require_auth, rate_limits
import re
config_bp = Blueprint('config', __name__, url_prefix='/api/config')

RATE_LIMIT_REGEX = re.compile(r'^\d+\s?(per\s|/)\s?(second|minute|hour|day)$')

def is_valid_rate_limit(limit):
    return bool(RATE_LIMIT_REGEX.match(limit))
@config_bp.route('/limits', methods=['GET'])
@require_auth(roles=['admin'])
def limits():
    return jsonify(rate_limits), 200

@config_bp.route('/limits', methods=['PUT'])
@require_auth(roles=['admin'])
def update_limits():
    data = request.json
    if not data or 'endpoint' not in data or 'method' not in data or 'new_limit' not in data:
        return jsonify({'error': 'Bad request'}), 400
    key = f"{data['endpoint']} : {data['method']}"
    if key not in rate_limits:
        return jsonify({'error': 'endpoint not fount'}), 404
    if is_valid_rate_limit(data['new_limit']):
        rate_limits[key] = data['new_limit']
        return jsonify({"message": "updated"}), 200
    return jsonify({'error': 'Invalid value'}), 400