231 lines
9.6 KiB
C#
231 lines
9.6 KiB
C#
#nullable enable
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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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using System.Linq;
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using System.Threading.Tasks;
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using Swan.Lite.Reflection;
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using Swan.Mappers;
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using Swan.Reflection;
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namespace Swan {
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/// <summary>
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/// Extension methods.
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/// </summary>
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public static partial class Extensions {
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/// <summary>
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/// Iterates over the public, instance, readable properties of the source and
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/// tries to write a compatible value to a public, instance, writable property in the destination.
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/// </summary>
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/// <typeparam name="T">The type of the source.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="target">The target.</param>
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/// <param name="ignoreProperties">The ignore properties.</param>
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/// <returns>
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/// Number of properties that was copied successful.
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/// </returns>
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public static Int32 CopyPropertiesTo<T>(this T source, Object? target, params String[]? ignoreProperties) where T : class => ObjectMapper.Copy(source, target, GetCopyableProperties(target), ignoreProperties);
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/// <summary>
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/// Iterates over the public, instance, readable properties of the source and
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/// tries to write a compatible value to a public, instance, writable property in the destination.
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/// </summary>
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/// <param name="source">The source.</param>
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/// <param name="target">The destination.</param>
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/// <param name="propertiesToCopy">Properties to copy.</param>
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/// <returns>
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/// Number of properties that were successfully copied.
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/// </returns>
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public static Int32 CopyOnlyPropertiesTo(this Object source, Object target, params String[]? propertiesToCopy) => ObjectMapper.Copy(source, target, propertiesToCopy);
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/// <summary>
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/// Copies the properties to new instance of T.
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/// </summary>
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/// <typeparam name="T">The new object type.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="ignoreProperties">The ignore properties.</param>
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/// <returns>
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/// The specified type with properties copied.
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/// </returns>
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/// <exception cref="ArgumentNullException">source.</exception>
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public static T CopyPropertiesToNew<T>(this Object source, String[]? ignoreProperties = null) where T : class {
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if(source == null) {
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throw new ArgumentNullException(nameof(source));
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}
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T target = Activator.CreateInstance<T>();
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_ = ObjectMapper.Copy(source, target, GetCopyableProperties(target), ignoreProperties);
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return target;
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}
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/// <summary>
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/// Copies the only properties to new instance of T.
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/// </summary>
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/// <typeparam name="T">Object Type.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="propertiesToCopy">The properties to copy.</param>
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/// <returns>
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/// The specified type with properties copied.
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/// </returns>
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/// <exception cref="ArgumentNullException">source.</exception>
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public static T CopyOnlyPropertiesToNew<T>(this Object source, params String[] propertiesToCopy) where T : class {
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if(source == null) {
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throw new ArgumentNullException(nameof(source));
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}
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T target = Activator.CreateInstance<T>();
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_ = ObjectMapper.Copy(source, target, propertiesToCopy);
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return target;
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}
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/// <summary>
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/// Iterates over the keys of the source and tries to write a compatible value to a public,
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/// instance, writable property in the destination.
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/// </summary>
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/// <param name="source">The source.</param>
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/// <param name="target">The target.</param>
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/// <param name="ignoreKeys">The ignore keys.</param>
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/// <returns>Number of properties that was copied successful.</returns>
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public static Int32 CopyKeyValuePairTo(this IDictionary<String, Object> source, Object? target, params String[] ignoreKeys) => source == null ? throw new ArgumentNullException(nameof(source)) : ObjectMapper.Copy(source, target, null, ignoreKeys);
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/// <summary>
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/// Iterates over the keys of the source and tries to write a compatible value to a public,
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/// instance, writable property in the destination.
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/// </summary>
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/// <typeparam name="T">Object Type.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="ignoreKeys">The ignore keys.</param>
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/// <returns>
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/// The specified type with properties copied.
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/// </returns>
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public static T CopyKeyValuePairToNew<T>(this IDictionary<String, Object> source, params String[] ignoreKeys) {
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if(source == null) {
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throw new ArgumentNullException(nameof(source));
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}
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T target = Activator.CreateInstance<T>();
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_ = source.CopyKeyValuePairTo(target, ignoreKeys);
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return target;
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}
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/// <summary>
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/// Does the specified action.
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/// </summary>
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/// <param name="action">The action.</param>
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/// <param name="retryInterval">The retry interval.</param>
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/// <param name="retryCount">The retry count.</param>
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public static void Retry(this Action action, TimeSpan retryInterval = default, Int32 retryCount = 3) {
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if(action == null) {
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throw new ArgumentNullException(nameof(action));
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}
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_ = Retry<Object?>(() => { action(); return null; }, retryInterval, retryCount);
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}
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/// <summary>
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/// Does the specified action.
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/// </summary>
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/// <typeparam name="T">The type of the source.</typeparam>
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/// <param name="action">The action.</param>
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/// <param name="retryInterval">The retry interval.</param>
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/// <param name="retryCount">The retry count.</param>
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/// <returns>
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/// The return value of the method that this delegate encapsulates.
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/// </returns>
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/// <exception cref="ArgumentNullException">action.</exception>
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/// <exception cref="AggregateException">Represents one or many errors that occur during application execution.</exception>
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public static T Retry<T>(this Func<T> action, TimeSpan retryInterval = default, Int32 retryCount = 3) {
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if(action == null) {
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throw new ArgumentNullException(nameof(action));
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}
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if(retryInterval == default) {
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retryInterval = TimeSpan.FromSeconds(1);
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}
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global::System.Collections.Generic.List<global::System.Exception> exceptions = new List<Exception>();
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for(Int32 retry = 0; retry < retryCount; retry++) {
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try {
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if(retry > 0) {
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Task.Delay(retryInterval).Wait();
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}
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return action();
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} catch(Exception ex) {
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exceptions.Add(ex);
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}
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}
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throw new AggregateException(exceptions);
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}
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/// <summary>
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/// Gets the copyable properties.
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///
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/// If there is no properties with the attribute <c>AttributeCache</c> returns all the properties.
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/// </summary>
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/// <param name="this">The object.</param>
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/// <returns>
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/// Array of properties.
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/// </returns>
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/// <exception cref="ArgumentNullException">model.</exception>
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/// <seealso cref="AttributeCache"/>
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public static IEnumerable<String> GetCopyableProperties(this Object? @this) {
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if(@this == null) {
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throw new ArgumentNullException(nameof(@this));
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}
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global::System.Collections.Generic.IEnumerable<global::System.Reflection.PropertyInfo> collection = PropertyTypeCache.DefaultCache.Value.RetrieveAllProperties(@this.GetType(), true);
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global::System.Collections.Generic.IEnumerable<global::System.String> properties = collection.Select(x => new {
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x.Name,
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HasAttribute = AttributeCache.DefaultCache.Value.RetrieveOne<CopyableAttribute>(x) != null,
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}).Where(x => x.HasAttribute).Select(x => x.Name);
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return properties.Any() ? properties : collection.Select(x => x.Name);
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}
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internal static void CreateTarget(this Object source, Type targetType, Boolean includeNonPublic, ref Object? target) {
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switch(source) {
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// do nothing. Simply skip creation
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case String _:
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break;
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// When using arrays, there is no default constructor, attempt to build a compatible array
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case IList sourceObjectList when targetType.IsArray:
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Type? elementType = targetType.GetElementType();
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if(elementType != null) {
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target = Array.CreateInstance(elementType, sourceObjectList.Count);
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}
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break;
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default:
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IEnumerable<Tuple<System.Reflection.ConstructorInfo, System.Reflection.ParameterInfo[]>> constructors = ConstructorTypeCache.DefaultCache.Value.RetrieveAllConstructors(targetType, includeNonPublic);
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// Try to check if empty constructor is available
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if(constructors.Any(x => x.Item2.Length == 0)) {
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target = Activator.CreateInstance(targetType, includeNonPublic);
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} else {
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Tuple<System.Reflection.ConstructorInfo, System.Reflection.ParameterInfo[]> firstCtor = constructors.OrderBy(x => x.Item2.Length).FirstOrDefault();
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target = Activator.CreateInstance(targetType, firstCtor?.Item2.Select(arg => arg.GetType().GetDefault()).ToArray());
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}
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break;
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}
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}
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internal static String GetNameWithCase(this String name, JsonSerializerCase jsonSerializerCase) => jsonSerializerCase switch
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{
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JsonSerializerCase.PascalCase => Char.ToUpperInvariant(name[0]) + name.Substring(1),
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JsonSerializerCase.CamelCase => Char.ToLowerInvariant(name[0]) + name.Substring(1),
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JsonSerializerCase.None => name,
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_ => throw new ArgumentOutOfRangeException(nameof(jsonSerializerCase), jsonSerializerCase, null)
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};
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}
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}
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