namespace Soul2.General.utils {
    /// <summary>
    /// 字符串工具类
    /// By Soul2
    /// </summary>
    public static class StringUtils {
        /// <summary>
        /// 判断空值(null或"")
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool isEmpty(this string str) {
            return string.IsNullOrEmpty(str);
        }
        public static bool isNotEmpty(this string str) {
            return !string.IsNullOrEmpty(str);
        }


        /// <summary>
        /// 判断空值(null、""或只有空格)
        /// </summary>
        /// <param name="str">被判断的字符串</param>
        /// <returns></returns>
        public static bool isNotBlank(this string str) { return !string.IsNullOrWhiteSpace(str); }

        public static bool IsBlank(this string str) { return string.IsNullOrWhiteSpace(str); }

        /// <summary>
        /// 任何一个为空
        /// </summary>
        /// <param name="strs"></param>
        /// <returns></returns>
        public static bool isAnyBlank(params string[] strs) {
            foreach (var str in strs) {
                if (string.IsNullOrWhiteSpace(str)) {
                    return true;
                }
            }
            return false;
        }

        /// <summary>
        /// 任何一个为空
        /// 空格属于非空
        /// </summary>
        /// <param name="strs"></param>
        /// <returns></returns>
        public static bool isAnyEmpty(params string[] strs) {
            foreach (var str in strs) {
                if (string.IsNullOrEmpty(str)) {
                    return true;
                }
            }
            return false;
        }

        /// <summary>
        /// 任何一个不为空
        /// </summary>
        /// <param name="strs"></param>
        /// <returns></returns>
        public static bool isNoneBlank(params string[] strs) {
            foreach (var str in strs) {
                if (string.IsNullOrWhiteSpace(str)) {
                    return false;
                }
            }
            return true;
        }

        /// <summary>
        /// 任何一个不为空
        /// 空格属于非空
        /// </summary>
        /// <param name="strs"></param>
        /// <returns></returns>
        public static bool isNoneEmpty(params string[] strs) {
            foreach (var str in strs) {
                if (string.IsNullOrEmpty(str)) {
                    return false;
                }
            }
            return true;
        }

        /// <summary>
        /// 如果不以val结尾,则添加到结尾
        /// </summary>
        /// <param name="original"></param>
        /// <param name="str"></param>
        public static void appendIfMissing(this string original, string str) {
            if (!original.EndsWith(str)) {
                original += str;
            }
        }

        /// <summary>
        /// 如果不以val开头,则添加到开头
        /// </summary>
        /// <param name="original"></param>
        /// <param name="str"></param>
        public static void prependIfMissing(this string original, string str) {
            if (!original.StartsWith(str)) {
                original = str + original;
            }
        }

        /// <summary>
        /// 翻转
        /// 例:"123"->"321"
        /// </summary>
        /// <param name="original"></param>
        /// <returns></returns>
        public static string flip(this string original) {
            char[] chars = original.ToCharArray();
            Array.Reverse(chars);
            return new string(chars);
        }

        public static string subStrWith(this string original, int begin, int end) {
            if (begin < 0 || end > original.Length || begin > end) {
                throw new ArgumentException("Invalid input parameters");
            }
            return original.Substring(begin, end - begin);
        }

    }
}