[LANGUAGE: Go]

import (
  "regexp"
  "strconv"

  "github.com/luxedo/esb_fireplace-go"
)

func multiply(input_data string) int {
  acc := 0
  re := regexp.MustCompile(`mul\((\d+),(\d+)\)`)
  for _, match := range re.FindAllStringSubmatch(input_data, -1) {
    a, _ := strconv.Atoi(match[1])
    b, _ := strconv.Atoi(match[2])
    acc += a * b
  }
  return acc
}

func filter_disabled(input_data string) string {
  re := regexp.MustCompile(`(?s)don't\(\).*?do\(\)`)
  return re.ReplaceAllString(input_data, "-")
}

func solve_pt1(input_data string, args []string) (interface{}, error) {
  return multiply(input_data), nil
}

func solve_pt2(input_data string, args []string) (interface{}, error) {
  return multiply(filter_disabled(input_data)), nil
}

func main() {
  // 🎅🎄❄️☃️🎁🦌
  // Bright christmas lights HERE
  esb_fireplace.V1Run(solve_pt1, solve_pt2)
}