package api

import "strings"

const hex = "0123456789abcdefABCDEF"

func isValidHexColor(color string) (bool, string) {
	if len(color) != 7 {
		return false, "color must be hex with length of 7"
	}

	if color[0] != '#' {
		return false, "color must start with '#'"
	}

	for _, c := range color {
		if !strings.ContainsRune(hex, c) {
			return false, "color must start with '#' and contain exactly 6 digits 0-9, a-f, A-F"
		}
	}

	return true, ""
}