const eq = require('./eq');
const neq = require('./neq');
const gt = require('./gt');
const gte = require('./gte');
const lt = require('./lt');
const lte = require('./lte');

const cmp = (a, op, b, loose) => {
  switch (op) {
    case '===':
      if (typeof a === 'object') {
        a = a.version;
      }
      if (typeof b === 'object') {
        b = b.version;
      }
      return a === b;

    case '!==':
      if (typeof a === 'object') {
        a = a.version;
      }
      if (typeof b === 'object') {
        b = b.version;
      }
      return a !== b;

    case '':
    case '=':
    case '==':
      return eq(a, b, loose);

    case '!=':
      return neq(a, b, loose);

    case '>':
      return gt(a, b, loose);

    case '>=':
      return gte(a, b, loose);

    case '<':
      return lt(a, b, loose);

    case '<=':
      return lte(a, b, loose);

    default:
      throw new TypeError(`Invalid operator: ${op}`);
  }
};
module.exports = cmp;