trying to fix price

models/price.go

@@ -0,0 +1,33 @@
+package models
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type Price int
+
+func (in Price) String() string {
+	if in%100 == 0 {
+		return strconv.Itoa(int(in) / 100)
+	} else {
+		price := strconv.Itoa(int(in))
+		i := len(price) - 2
+		price = price[:i] + "." + price[i:]
+		return price
+	}
+}
+
+func ParsePrice(in string) (Price, error) {
+	if !strings.Contains(in, ".") {
+		price, err := strconv.Atoi(in)
+		return Price(price) * 100, err
+	}
+	before, after, _ := strings.Cut(in, ".")
+	if len(after) != 2 {
+		return 0, fmt.Errorf("Wrong format, requires exactly 2 decimal places after '.'")
+	}
+	price, err := strconv.Atoi(before + after)
+	return Price(price), err
+}