using FastJSON;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace Top.Api.Util
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{
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/// <summary>
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/// 请求验证器。
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/// </summary>
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public sealed class RequestValidator
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{
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private const string ERR_CODE_PARAM_MISSING = "40";
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private const string ERR_CODE_PARAM_INVALID = "41";
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private const string ERR_MSG_PARAM_MISSING = "client-error:Missing required arguments:{0}";
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private const string ERR_MSG_PARAM_INVALID = "client-error:Invalid arguments:{0}";
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/// <summary>
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/// 验证参数是否为空。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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public static void ValidateRequired(string name, object value)
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{
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if (value == null)
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{
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throw new TopException(ERR_CODE_PARAM_MISSING, string.Format(ERR_MSG_PARAM_MISSING, name));
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}
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else
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{
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if (value.GetType() == typeof(string))
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{
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string strValue = value as string;
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if (string.IsNullOrEmpty(strValue))
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{
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throw new TopException(ERR_CODE_PARAM_MISSING, string.Format(ERR_MSG_PARAM_MISSING, name));
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}
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}
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}
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}
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/// <summary>
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/// 验证字符串参数的最大长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxLength">最大长度</param>
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public static void ValidateMaxLength(string name, string value, int maxLength)
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{
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if (value != null && value.Length > maxLength)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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/// <summary>
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/// 验证上传文件的最大字节长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxLength">最大长度</param>
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public static void ValidateMaxLength(string name, FileItem value, int maxLength)
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{
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if (value != null && value.GetFileLength() > maxLength)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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/// <summary>
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/// 验证以逗号分隔的字符串参数的最大列表长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxSize">最大列表长度</param>
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public static void ValidateMaxListSize(string name, string value, int maxSize)
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{
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if (value != null)
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{
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string[] data = value.Split(',');
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if (data != null && data.Length > maxSize)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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}
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/// <summary>
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/// 验证以逗号分隔的字符串参数的最大列表长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxSize">最大列表长度</param>
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public static void ValidateMaxListSize(string name, List<string> value, int maxSize)
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{
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if (value != null)
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{
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if (value != null && value.Count > maxSize)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, ERR_MSG_PARAM_INVALID);
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}
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}
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}
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/// <summary>
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/// 验证以逗号分隔的字符串参数的最大列表长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxSize">最大列表长度</param>
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public static void ValidateMaxListSize(string name, List<long> value, int maxSize)
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{
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if (value != null)
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{
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if (value != null && value.Count > maxSize)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, ERR_MSG_PARAM_INVALID);
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}
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}
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}
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/// <summary>
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/// 验证以逗号分隔的字符串参数的最大列表长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxSize">最大列表长度</param>
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public static void ValidateMaxListSize(string name, List<bool> value, int maxSize)
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{
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if (value != null)
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{
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if (value != null && value.Count > maxSize)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, ERR_MSG_PARAM_INVALID);
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}
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}
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}
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/// <summary>
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/// 验证复杂结构数组参数的最大列表长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxSize">最大列表长度</param>
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public static void ValidateObjectMaxListSize(string name, string value, int maxSize)
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{
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if (value != null)
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{
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IList list = JSON.Parse(value) as IList;
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if (list != null && list.Count > maxSize)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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}
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/// <summary>
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/// 验证字符串参数的最小长度。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="minLength">最小长度</param>
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public static void ValidateMinLength(string name, string value, int minLength)
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{
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if (value != null && value.Length < minLength)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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/// <summary>
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/// 验证数字参数的最大值。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="maxValue">最大值</param>
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public static void ValidateMaxValue(string name, Nullable<long> value, long maxValue)
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{
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if (value != null && value > maxValue)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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/// <summary>
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/// 验证数字参数的最小值。
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/// </summary>
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/// <param name="name">参数名</param>
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/// <param name="value">参数值</param>
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/// <param name="minValue">最小值</param>
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public static void ValidateMinValue(string name, Nullable<long> value, long minValue)
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{
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if (value != null && value < minValue)
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{
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throw new TopException(ERR_CODE_PARAM_INVALID, string.Format(ERR_MSG_PARAM_INVALID, name));
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}
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}
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}
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}
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