se-panfilov/jsvat

import { Country } from '../jsvat';

export const austria: Country = {
  name: 'Austria',
  codes: ['AT', 'AUT', '040'],
  calcFn: (vat: string): boolean => {
    let total = 0;

    for (let i: number = 0; i < 7; i++) {
      const temp = Number(vat.charAt(i)) * austria.rules.multipliers.common[i];

      if (temp > 9) {
        total += Math.floor(temp / 10) + (temp % 10);
      } else {
        total += temp;
      }
    }

    total = 10 - ((total + 4) % 10);
    if (total === 10) total = 0;

    return total === Number(vat.slice(7, 8));
  },
  rules: {
    multipliers: {
      common: [1, 2, 1, 2, 1, 2, 1]
    },
    regex: [/^(AT)U(\d{8})$/]
  }
};