// Copyright © 2020 The CefSharp Authors. All rights reserved.

//

// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Reflection;

using System.Runtime.Serialization;

namespace CefSharp.DevTools

{

/// <summary>

/// Common Base class for DevTools Domain Model classes

/// </summary>

[DataContract]

public abstract class DevToolsDomainEntityBase

{

#if NETCOREAPP

internal static string EnumToString(Enum e)

{

var memberInfo = e.GetType().GetMember(e.ToString()).FirstOrDefault();

var enumMemberAttribute = (System.Text.Json.Serialization.JsonPropertyNameAttribute)Attribute.GetCustomAttribute(memberInfo, typeof(System.Text.Json.Serialization.JsonPropertyNameAttribute), false);

return enumMemberAttribute.Name;

}

internal static string EnumToString(Array enumArray)

{

var returnValue = "[";

foreach (var e in enumArray)

{

var memberInfo = e.GetType().GetMember(e.ToString()).FirstOrDefault();

var enumMemberAttribute = (System.Text.Json.Serialization.JsonPropertyNameAttribute)Attribute.GetCustomAttribute(memberInfo, typeof(System.Text.Json.Serialization.JsonPropertyNameAttribute), false);

returnValue += enumMemberAttribute.Name + ",";

}

returnValue += returnValue.Substring(0, returnValue.Length - 1) + "]";

return returnValue;

}

#else

internal static object StringToEnum(Type enumType, string input)

{

if (enumType.IsArray)

{

if (string.IsNullOrEmpty(input) || input == "[]" || input == "[ ]")

{

return null;

//return Array.CreateInstance(enumType.GetElementType(), 0);

}

var values = input.Substring(1, input.Length - 2).Split(',');

var returnValues = Array.CreateInstance(enumType.GetElementType(), values.Length);

for (int i = 0; i < values.Length; i++)

{

var str = values[i].Trim('\r', '\n', '"', ' ');

var enumVal = StringToEnumInternal(enumType.GetElementType(), str);

returnValues.SetValue(enumVal, i);

}

return returnValues;

}

if (enumType.IsGenericType && enumType.GetGenericTypeDefinition() == typeof(Nullable<>))

{

if (string.IsNullOrEmpty(input))

{

return null;

}

enumType = Nullable.GetUnderlyingType(enumType);

}

return StringToEnumInternal(enumType, input);

}

private static object StringToEnumInternal(Type enumType, string input)

{

foreach (var name in Enum.GetNames(enumType))

{

var enumMemberAttribute = ((EnumMemberAttribute[])enumType.GetField(name).GetCustomAttributes(typeof(EnumMemberAttribute), true)).Single();

if (enumMemberAttribute.Value == input)

{

return Enum.Parse(enumType, name);

}

}

return (Enum.GetValues(enumType).GetValue(0));

}

internal static string EnumToString(Enum e)

{

var memberInfo = e.GetType().GetMember(e.ToString()).FirstOrDefault();

var enumMemberAttribute = (EnumMemberAttribute)Attribute.GetCustomAttribute(memberInfo, typeof(EnumMemberAttribute), false);

return enumMemberAttribute.Value;

}

internal static string EnumToString(Array enumArray)

{

var returnValue = "[";

foreach (var e in enumArray)

{

var memberInfo = e.GetType().GetMember(e.ToString()).FirstOrDefault();

var enumMemberAttribute = (EnumMemberAttribute)Attribute.GetCustomAttribute(memberInfo, typeof(EnumMemberAttribute), false);

returnValue += enumMemberAttribute.Value + ",";

}

returnValue += returnValue.Substring(0, returnValue.Length - 1) + "]";

return returnValue;

}

#endif

#if NETCOREAPP

public IDictionary<string, object> ToDictionary()

{

var dict = new Dictionary<string, object>();

var properties = GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance);

foreach (var prop in properties)

{

var propertyAttribute = (System.Text.Json.Serialization.JsonPropertyNameAttribute)Attribute.GetCustomAttribute(prop, typeof(System.Text.Json.Serialization.JsonPropertyNameAttribute), false);

//Only add members that have JsonPropertyNameAttribute

if (propertyAttribute == null)

{

continue;

}

var propertyName = propertyAttribute.Name;

var propertyRequired = Attribute.IsDefined(prop, typeof(System.Diagnostics.CodeAnalysis.DisallowNullAttribute));

var propertyValue = prop.GetValue(this);

if (propertyRequired && propertyValue == null)

{

throw new DevToolsClientException(prop.Name + " is required");

}

//Not required and value null, don't add to dictionary

if (propertyValue == null)

{

continue;

}

var propertyValueType = propertyValue.GetType();

if (typeof(DevToolsDomainEntityBase).IsAssignableFrom(propertyValueType))

{

propertyValue = ((DevToolsDomainEntityBase)(propertyValue)).ToDictionary();

}

else if (propertyValueType.IsEnum)

{

propertyValue = EnumToString((Enum)propertyValue);

}

else if(propertyValueType.IsGenericType)

{

var nullableType = Nullable.GetUnderlyingType(propertyValueType);

if(nullableType != null && nullableType.IsEnum)

{

propertyValue = EnumToString((Enum)propertyValue);

}

}

else if(propertyValueType.IsArray && propertyValueType.GetElementType().IsEnum)

{

propertyValue = EnumToString((Array)propertyValue);

}

dict.Add(propertyName, propertyValue);

}

return dict;

}

#else

public IDictionary<string, object> ToDictionary()

{

var dict = new Dictionary<string, object>();

var properties = GetType().GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);

foreach (var prop in properties)

{

var dataMemberAttribute = (DataMemberAttribute)Attribute.GetCustomAttribute(prop, typeof(DataMemberAttribute), false);

//Only add members that have DataMemberAttribute

if (dataMemberAttribute == null)

{

continue;

}

var propertyName = dataMemberAttribute.Name;

var propertyRequired = dataMemberAttribute.IsRequired;

var propertyValue = prop.GetValue(this);

if (propertyRequired && propertyValue == null)

{

throw new DevToolsClientException(prop.Name + " is required");

}

//Not required and value null, don't add to dictionary

if (propertyValue == null)

{

continue;

}

var propertyValueType = propertyValue.GetType();

if (typeof(DevToolsDomainEntityBase).IsAssignableFrom(propertyValueType))

{

propertyValue = ((DevToolsDomainEntityBase)(propertyValue)).ToDictionary();

}

dict.Add(propertyName, propertyValue);

}

return dict;

}

#endif

}

}