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using NSwag.Generation.Processors;
using NSwag.Generation.Processors.Contexts;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
namespace Timeline.Swagger
{
public class DocumentDescriptionDocumentProcessor : IDocumentProcessor
{
private static Dictionary<string, int> GetAllErrorCodes()
{
var errorCodes = new Dictionary<string, int>();
void RecursiveCheckErrorCode(Type type)
{
foreach (var field in type.GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy)
.Where(fi => fi.IsLiteral && !fi.IsInitOnly && fi.FieldType == typeof(int)))
{
var name = (type.FullName + "." + field.Name).Remove(0, typeof(ErrorCodes).FullName!.Length + 1).Replace("+", ".", StringComparison.OrdinalIgnoreCase);
int value = (int)field.GetRawConstantValue()!;
errorCodes.Add(name, value);
}
foreach (var nestedType in type.GetNestedTypes())
{
RecursiveCheckErrorCode(nestedType);
}
}
RecursiveCheckErrorCode(typeof(ErrorCodes));
return errorCodes;
}
public void Process(DocumentProcessorContext context)
{
StringBuilder description = new StringBuilder();
description.AppendLine("# Error Codes");
description.AppendLine("name | value");
description.AppendLine("---- | -----");
foreach (var (name, value) in GetAllErrorCodes())
{
description.AppendLine($"`{name}` | `{value}`");
}
context.Document.Info.Description = description.ToString();
}
}
}
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