using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using WIDESEA_Core.Attributes;
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using WIDESEA_Core.Helper;
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namespace WIDESEA_Core.Utilities
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{
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public class ModelValidate
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{
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/// <summary>
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/// 验证模型数据是否符合定义的验证规则
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/// </summary>
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/// <typeparam name="T">要验证的模型类型</typeparam>
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/// <param name="data">要验证的模型数据</param>
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/// <returns>包含验证结果、错误信息和原始数据的元组</returns>
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/// <remarks>
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/// 返回值说明：
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/// Item1 - 验证是否通过 (true/false)
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/// Item2 - 验证失败时的错误信息
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/// Item3 - 原始传入的数据对象
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/// </remarks>
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public static (bool, string, object?) ValidateModelData<T>(T data) where T : class, new()
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{
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Type modelType = typeof(T);
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if (data == null) return (false, "传入参数不可为null", data);
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ModelValidateAttribute? modelAttribute = modelType.GetCustomAttribute<ModelValidateAttribute>();
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if (modelAttribute == null) return (false, $"{modelType.Name}未定义【ModelValidateAttribute】特性", data);
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PropertyInfo[] propertyInfos = modelType.GetProperties();
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return SimpleValidate(propertyInfos, data);
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}
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/// <summary>
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/// 验证模型数据集合的有效性
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/// </summary>
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/// <typeparam name="T">模型类型</typeparam>
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/// <param name="datas">待验证的模型数据集合</param>
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/// <returns>
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/// 元组包含三个值：
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/// Item1 - 验证结果(true/false)
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/// Item2 - 验证失败时的错误信息
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/// Item3 - 验证失败时的错误数据对象
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/// </returns>
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/// <remarks>
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/// 该方法会检查集合是否为null/空，并验证每个数据项的ModelValidateAttribute特性和属性值
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/// </remarks>
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public static (bool, string, object?) ValidateModelData<T>(List<T> datas) where T : class, new()
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{
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Type modelType = typeof(T);
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if (datas == null) return (false, "传入参数不可为null", datas);
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if (datas.Count == 0) return (false, "集合个数不可等于0", datas);
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foreach (T data in datas)
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{
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if (data == null) return (false, "传入参数不可为null", data);
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ModelValidateAttribute? modelAttribute = modelType.GetCustomAttribute<ModelValidateAttribute>();
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if (modelAttribute == null) return (false, $"{modelType.Name}未定义【ModelValidateAttribute】特性", data);
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PropertyInfo[] propertyInfos = modelType.GetProperties();
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(bool, string, object?) result = SimpleValidate(propertyInfos, data);
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if (!result.Item1) return result;
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}
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return (true, $"成功", datas);
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}
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//private static (bool, string, object?) CustomMethodValidate<T>(ModelValidateAttribute modelAttribute, T data) where T : class, new()
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//{
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// try
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// {
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// if (modelAttribute.CustomValidateMethodTypeName == null) return (false, $"自定义验证方法需要提供方法所在类的类型对象", data);
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// if (modelAttribute.CustomValidateMethodName == null) return (false, $"自定义验证方法需要提供方法名", data);
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// string path = Path.Combine(AppContext.BaseDirectory, $"{modelAttribute.CustomValidateAssemblyName}.dll");
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// Assembly assembly = Assembly.LoadFrom(path);
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// Type t = assembly.GetType(modelAttribute.CustomValidateAssemblyName + "." + modelAttribute.CustomValidateMethodTypeName);
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// object bbb = App.GetService(t);
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// MethodInfo? methodInfo = t.GetMethod(modelAttribute.CustomValidateMethodName);
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// var result = methodInfo.Invoke(bbb, new object[] { data });
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// //MethodInfo? methodInfo = modelAttribute.CustomValidateMethodType.GetMethod(modelAttribute.CustomValidateMethodName);
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// //if (methodInfo == null) return (false, $"未在该类型对象【{modelAttribute.CustomValidateMethodType.Name}】中找到该方法【{modelAttribute.CustomValidateMethodName}】", data);
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// //methodInfo.GetGenericArguments()
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// return (true, "成功", data);
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// }
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// catch(Exception ex)
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// {
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// throw new Exception();
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// }
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//}
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/// <summary>
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/// 执行简单的模型属性验证
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/// </summary>
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/// <typeparam name="T">要验证的模型类型</typeparam>
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/// <param name="propertyInfos">模型的属性信息集合</param>
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/// <param name="data">要验证的模型实例</param>
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/// <returns>验证结果元组：(是否验证通过, 验证消息, 原始数据)</returns>
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/// <remarks>
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/// 该方法会根据属性上的PropertyValidateAttribute特性进行以下验证：
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/// 1. 非空验证(NotNullAndEmpty)
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/// 2. 最小值验证(MinValue)
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/// 3. 最大值验证(MaxValue)
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/// 4. 关联属性非空验证(NotNullAndEmptyWithProperty)
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/// 5. 关联属性特定值验证(NotNullAndEmptyWithPropertyAndValue)
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/// </remarks>
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private static (bool, string, object?) SimpleValidate<T>(PropertyInfo[] propertyInfos, T data) where T : class, new()
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{
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try
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{
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foreach (PropertyInfo propertyInfo in propertyInfos)
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{
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PropertyValidateAttribute? propertyAttribute = propertyInfo.GetCustomAttribute<PropertyValidateAttribute>();
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if (propertyAttribute == null) continue;
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object? value = propertyInfo.GetValue(data, null);
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if (propertyAttribute.NotNullAndEmpty)
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{
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if (value == null) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}不可为null", data);
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if (string.IsNullOrEmpty(value.ToString())) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}不可为空字符串", data);
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}
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if (propertyAttribute.MinValue > int.MinValue)
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{
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if (value == null) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}不可为null", data);
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if (propertyAttribute.IsContainMinValue)
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{
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if (Convert.ToInt32(value.ToString()) < propertyAttribute.MinValue) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}的值【{value}】不可小于【{propertyAttribute.MinValue}】", data);
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}
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else
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{
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if (Convert.ToInt32(value.ToString()) <= propertyAttribute.MinValue) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}的值【{value}】要大于【{propertyAttribute.MinValue}】", data);
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}
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}
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if (propertyAttribute.MaxValue < int.MaxValue)
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{
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if (value == null) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}不可为null", data);
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if (propertyAttribute.IsContainMaxValue)
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{
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if (Convert.ToInt32(value.ToString()) >= propertyAttribute.MaxValue) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}的值【{value}】不可大于【{propertyAttribute.MaxValue}】", data);
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}
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else
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{
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if (Convert.ToInt32(value.ToString()) > propertyAttribute.MaxValue) return (false, $"{(string.IsNullOrEmpty(propertyAttribute.Description) ? propertyInfo.Name : propertyAttribute.Description)}的值【{value}】要小于【{propertyAttribute.MaxValue}】", data);
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}
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}
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if (!string.IsNullOrEmpty(propertyAttribute.NotNullAndEmptyWithProperty))
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{
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PropertyInfo? property = propertyInfos.FirstOrDefault(x => x.Name == propertyAttribute.NotNullAndEmptyWithProperty);
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if (property != null)
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{
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object? tempValue = property.GetValue(data);
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if (tempValue != null && !string.IsNullOrEmpty(tempValue.ToString()))
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{
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Type[] types = propertyInfo.PropertyType.GenericTypeArguments;
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if (types.Length == 1)
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{
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string str = value.Serialize();
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if (str == "[]")
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{
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return (false, $"【{property.Name}】属性的值非空时【{propertyInfo.Name}】属性的值也不可为空", data);
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}
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}
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else if (types.Length == 0)
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{
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if (value == null)
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{
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return (false, $"【{property.Name}】属性的值非空时【{propertyInfo.Name}】属性的值也不可为空", data);
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}
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}
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}
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}
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else
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{
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return (false, $"未找到【{propertyInfo.Name}】特性属性【{propertyAttribute.NotNullAndEmptyWithProperty}】", data);
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}
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}
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if (propertyAttribute.NotNullAndEmptyWithPropertyAndValue != null && propertyAttribute.NotNullAndEmptyWithPropertyAndValue.Length == 2)
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{
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PropertyInfo? property = propertyInfos.FirstOrDefault(x => x.Name == propertyAttribute.NotNullAndEmptyWithPropertyAndValue[0]);
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if (property != null)
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{
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object? tempValue = property.GetValue(data);
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if (tempValue != null && !string.IsNullOrEmpty(tempValue.ToString()))
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{
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Type[] types = propertyInfo.PropertyType.GenericTypeArguments;
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if (types.Length == 1)
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{
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if (tempValue.ChangeType(property.PropertyType).ToString() == propertyAttribute.NotNullAndEmptyWithPropertyAndValue[1].ChangeType(property.PropertyType).ToString())
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{
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string str = value.Serialize();
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if (str == "[]")
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{
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return (false, $"【{property.Name}】属性的值为【{propertyAttribute.NotNullAndEmptyWithPropertyAndValue[1]}】时【{propertyInfo.Name}】属性的值不可为空", data);
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}
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}
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}
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else if (types.Length == 0)
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{
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if (tempValue.ChangeType(property.PropertyType).ToString() == propertyAttribute.NotNullAndEmptyWithPropertyAndValue[1].ChangeType(property.PropertyType).ToString() && value == null && string.IsNullOrEmpty(value.ToString()))
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{
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return (false, $"【{property.Name}】属性的值为【{propertyAttribute.NotNullAndEmptyWithPropertyAndValue[1]}】时【{propertyInfo.Name}】属性的值不可为空", data);
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}
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}
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}
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}
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else
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{
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return (false, $"未找到属性【{propertyAttribute.NotNullAndEmptyWithProperty}】", data);
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}
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}
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}
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}
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catch (Exception ex)
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{
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return (false, $"数据验证异常,异常信息:{ex.Message}", data);
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}
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return (true, "验证成功", data);
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}
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}
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}
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