add calories

calories/calories.go

@@ -0,0 +1,37 @@
+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
+}