package calories

import (
	"strconv"
	"strings"
)

var (
	caloriesMap = map[string]int{
		"чай":    79,
		"яблоко": 100,
	}
)

func CalcCalories(text string) (int, error) {
	count, ok := caloriesMap[strings.ToLower(text)]
	if ok {
		return count, nil
	}
	arr := strings.Split(text, " ")
	if len(arr) == 2 {
		coun1, err := strconv.Atoi(arr[0])
		if err != nil {
			return 0, nil
		}
		count2, err := strconv.Atoi(arr[1])
		if err != nil {
			return 0, nil
		}
		return coun1 * count2 / 100, nil
	}
	count, err := strconv.Atoi(text)
	if err != nil {
		return 0, nil
	}
	return count, nil
}