Retail_manager/RMDataManager/Areas/HelpPage/HelpPageConfigurationExtensions.cs
2022-06-30 21:37:20 +02:00

468 lines
24 KiB
C#

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Web.Http;
using System.Web.Http.Controllers;
using System.Web.Http.Description;
using RMDataManager.Areas.HelpPage.ModelDescriptions;
using RMDataManager.Areas.HelpPage.Models;
namespace RMDataManager.Areas.HelpPage
{
public static class HelpPageConfigurationExtensions
{
private const string ApiModelPrefix = "MS_HelpPageApiModel_";
/// <summary>
/// Sets the documentation provider for help page.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="documentationProvider">The documentation provider.</param>
public static void SetDocumentationProvider(this HttpConfiguration config, IDocumentationProvider documentationProvider)
{
config.Services.Replace(typeof(IDocumentationProvider), documentationProvider);
}
/// <summary>
/// Sets the objects that will be used by the formatters to produce sample requests/responses.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sampleObjects">The sample objects.</param>
public static void SetSampleObjects(this HttpConfiguration config, IDictionary<Type, object> sampleObjects)
{
config.GetHelpPageSampleGenerator().SampleObjects = sampleObjects;
}
/// <summary>
/// Sets the sample request directly for the specified media type and action.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sample">The sample request.</param>
/// <param name="mediaType">The media type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
public static void SetSampleRequest(this HttpConfiguration config, object sample, MediaTypeHeaderValue mediaType, string controllerName, string actionName)
{
config.GetHelpPageSampleGenerator().ActionSamples.Add(new HelpPageSampleKey(mediaType, SampleDirection.Request, controllerName, actionName, new[] { "*" }), sample);
}
/// <summary>
/// Sets the sample request directly for the specified media type and action with parameters.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sample">The sample request.</param>
/// <param name="mediaType">The media type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
public static void SetSampleRequest(this HttpConfiguration config, object sample, MediaTypeHeaderValue mediaType, string controllerName, string actionName, params string[] parameterNames)
{
config.GetHelpPageSampleGenerator().ActionSamples.Add(new HelpPageSampleKey(mediaType, SampleDirection.Request, controllerName, actionName, parameterNames), sample);
}
/// <summary>
/// Sets the sample request directly for the specified media type of the action.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sample">The sample response.</param>
/// <param name="mediaType">The media type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
public static void SetSampleResponse(this HttpConfiguration config, object sample, MediaTypeHeaderValue mediaType, string controllerName, string actionName)
{
config.GetHelpPageSampleGenerator().ActionSamples.Add(new HelpPageSampleKey(mediaType, SampleDirection.Response, controllerName, actionName, new[] { "*" }), sample);
}
/// <summary>
/// Sets the sample response directly for the specified media type of the action with specific parameters.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sample">The sample response.</param>
/// <param name="mediaType">The media type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
public static void SetSampleResponse(this HttpConfiguration config, object sample, MediaTypeHeaderValue mediaType, string controllerName, string actionName, params string[] parameterNames)
{
config.GetHelpPageSampleGenerator().ActionSamples.Add(new HelpPageSampleKey(mediaType, SampleDirection.Response, controllerName, actionName, parameterNames), sample);
}
/// <summary>
/// Sets the sample directly for all actions with the specified media type.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sample">The sample.</param>
/// <param name="mediaType">The media type.</param>
public static void SetSampleForMediaType(this HttpConfiguration config, object sample, MediaTypeHeaderValue mediaType)
{
config.GetHelpPageSampleGenerator().ActionSamples.Add(new HelpPageSampleKey(mediaType), sample);
}
/// <summary>
/// Sets the sample directly for all actions with the specified type and media type.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sample">The sample.</param>
/// <param name="mediaType">The media type.</param>
/// <param name="type">The parameter type or return type of an action.</param>
public static void SetSampleForType(this HttpConfiguration config, object sample, MediaTypeHeaderValue mediaType, Type type)
{
config.GetHelpPageSampleGenerator().ActionSamples.Add(new HelpPageSampleKey(mediaType, type), sample);
}
/// <summary>
/// Specifies the actual type of <see cref="System.Net.Http.ObjectContent{T}"/> passed to the <see cref="System.Net.Http.HttpRequestMessage"/> in an action.
/// The help page will use this information to produce more accurate request samples.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="type">The type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
public static void SetActualRequestType(this HttpConfiguration config, Type type, string controllerName, string actionName)
{
config.GetHelpPageSampleGenerator().ActualHttpMessageTypes.Add(new HelpPageSampleKey(SampleDirection.Request, controllerName, actionName, new[] { "*" }), type);
}
/// <summary>
/// Specifies the actual type of <see cref="System.Net.Http.ObjectContent{T}"/> passed to the <see cref="System.Net.Http.HttpRequestMessage"/> in an action.
/// The help page will use this information to produce more accurate request samples.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="type">The type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
public static void SetActualRequestType(this HttpConfiguration config, Type type, string controllerName, string actionName, params string[] parameterNames)
{
config.GetHelpPageSampleGenerator().ActualHttpMessageTypes.Add(new HelpPageSampleKey(SampleDirection.Request, controllerName, actionName, parameterNames), type);
}
/// <summary>
/// Specifies the actual type of <see cref="System.Net.Http.ObjectContent{T}"/> returned as part of the <see cref="System.Net.Http.HttpRequestMessage"/> in an action.
/// The help page will use this information to produce more accurate response samples.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="type">The type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
public static void SetActualResponseType(this HttpConfiguration config, Type type, string controllerName, string actionName)
{
config.GetHelpPageSampleGenerator().ActualHttpMessageTypes.Add(new HelpPageSampleKey(SampleDirection.Response, controllerName, actionName, new[] { "*" }), type);
}
/// <summary>
/// Specifies the actual type of <see cref="System.Net.Http.ObjectContent{T}"/> returned as part of the <see cref="System.Net.Http.HttpRequestMessage"/> in an action.
/// The help page will use this information to produce more accurate response samples.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="type">The type.</param>
/// <param name="controllerName">Name of the controller.</param>
/// <param name="actionName">Name of the action.</param>
/// <param name="parameterNames">The parameter names.</param>
public static void SetActualResponseType(this HttpConfiguration config, Type type, string controllerName, string actionName, params string[] parameterNames)
{
config.GetHelpPageSampleGenerator().ActualHttpMessageTypes.Add(new HelpPageSampleKey(SampleDirection.Response, controllerName, actionName, parameterNames), type);
}
/// <summary>
/// Gets the help page sample generator.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <returns>The help page sample generator.</returns>
public static HelpPageSampleGenerator GetHelpPageSampleGenerator(this HttpConfiguration config)
{
return (HelpPageSampleGenerator)config.Properties.GetOrAdd(
typeof(HelpPageSampleGenerator),
k => new HelpPageSampleGenerator());
}
/// <summary>
/// Sets the help page sample generator.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="sampleGenerator">The help page sample generator.</param>
public static void SetHelpPageSampleGenerator(this HttpConfiguration config, HelpPageSampleGenerator sampleGenerator)
{
config.Properties.AddOrUpdate(
typeof(HelpPageSampleGenerator),
k => sampleGenerator,
(k, o) => sampleGenerator);
}
/// <summary>
/// Gets the model description generator.
/// </summary>
/// <param name="config">The configuration.</param>
/// <returns>The <see cref="ModelDescriptionGenerator"/></returns>
public static ModelDescriptionGenerator GetModelDescriptionGenerator(this HttpConfiguration config)
{
return (ModelDescriptionGenerator)config.Properties.GetOrAdd(
typeof(ModelDescriptionGenerator),
k => InitializeModelDescriptionGenerator(config));
}
/// <summary>
/// Gets the model that represents an API displayed on the help page. The model is initialized on the first call and cached for subsequent calls.
/// </summary>
/// <param name="config">The <see cref="HttpConfiguration"/>.</param>
/// <param name="apiDescriptionId">The <see cref="ApiDescription"/> ID.</param>
/// <returns>
/// An <see cref="HelpPageApiModel"/>
/// </returns>
public static HelpPageApiModel GetHelpPageApiModel(this HttpConfiguration config, string apiDescriptionId)
{
object model;
string modelId = ApiModelPrefix + apiDescriptionId;
if (!config.Properties.TryGetValue(modelId, out model))
{
Collection<ApiDescription> apiDescriptions = config.Services.GetApiExplorer().ApiDescriptions;
ApiDescription apiDescription = apiDescriptions.FirstOrDefault(api => String.Equals(api.GetFriendlyId(), apiDescriptionId, StringComparison.OrdinalIgnoreCase));
if (apiDescription != null)
{
model = GenerateApiModel(apiDescription, config);
config.Properties.TryAdd(modelId, model);
}
}
return (HelpPageApiModel)model;
}
private static HelpPageApiModel GenerateApiModel(ApiDescription apiDescription, HttpConfiguration config)
{
HelpPageApiModel apiModel = new HelpPageApiModel()
{
ApiDescription = apiDescription,
};
ModelDescriptionGenerator modelGenerator = config.GetModelDescriptionGenerator();
HelpPageSampleGenerator sampleGenerator = config.GetHelpPageSampleGenerator();
GenerateUriParameters(apiModel, modelGenerator);
GenerateRequestModelDescription(apiModel, modelGenerator, sampleGenerator);
GenerateResourceDescription(apiModel, modelGenerator);
GenerateSamples(apiModel, sampleGenerator);
return apiModel;
}
private static void GenerateUriParameters(HelpPageApiModel apiModel, ModelDescriptionGenerator modelGenerator)
{
ApiDescription apiDescription = apiModel.ApiDescription;
foreach (ApiParameterDescription apiParameter in apiDescription.ParameterDescriptions)
{
if (apiParameter.Source == ApiParameterSource.FromUri)
{
HttpParameterDescriptor parameterDescriptor = apiParameter.ParameterDescriptor;
Type parameterType = null;
ModelDescription typeDescription = null;
ComplexTypeModelDescription complexTypeDescription = null;
if (parameterDescriptor != null)
{
parameterType = parameterDescriptor.ParameterType;
typeDescription = modelGenerator.GetOrCreateModelDescription(parameterType);
complexTypeDescription = typeDescription as ComplexTypeModelDescription;
}
// Example:
// [TypeConverter(typeof(PointConverter))]
// public class Point
// {
// public Point(int x, int y)
// {
// X = x;
// Y = y;
// }
// public int X { get; set; }
// public int Y { get; set; }
// }
// Class Point is bindable with a TypeConverter, so Point will be added to UriParameters collection.
//
// public class Point
// {
// public int X { get; set; }
// public int Y { get; set; }
// }
// Regular complex class Point will have properties X and Y added to UriParameters collection.
if (complexTypeDescription != null
&& !IsBindableWithTypeConverter(parameterType))
{
foreach (ParameterDescription uriParameter in complexTypeDescription.Properties)
{
apiModel.UriParameters.Add(uriParameter);
}
}
else if (parameterDescriptor != null)
{
ParameterDescription uriParameter =
AddParameterDescription(apiModel, apiParameter, typeDescription);
if (!parameterDescriptor.IsOptional)
{
uriParameter.Annotations.Add(new ParameterAnnotation() { Documentation = "Required" });
}
object defaultValue = parameterDescriptor.DefaultValue;
if (defaultValue != null)
{
uriParameter.Annotations.Add(new ParameterAnnotation() { Documentation = "Default value is " + Convert.ToString(defaultValue, CultureInfo.InvariantCulture) });
}
}
else
{
Debug.Assert(parameterDescriptor == null);
// If parameterDescriptor is null, this is an undeclared route parameter which only occurs
// when source is FromUri. Ignored in request model and among resource parameters but listed
// as a simple string here.
ModelDescription modelDescription = modelGenerator.GetOrCreateModelDescription(typeof(string));
AddParameterDescription(apiModel, apiParameter, modelDescription);
}
}
}
}
private static bool IsBindableWithTypeConverter(Type parameterType)
{
if (parameterType == null)
{
return false;
}
return TypeDescriptor.GetConverter(parameterType).CanConvertFrom(typeof(string));
}
private static ParameterDescription AddParameterDescription(HelpPageApiModel apiModel,
ApiParameterDescription apiParameter, ModelDescription typeDescription)
{
ParameterDescription parameterDescription = new ParameterDescription
{
Name = apiParameter.Name,
Documentation = apiParameter.Documentation,
TypeDescription = typeDescription,
};
apiModel.UriParameters.Add(parameterDescription);
return parameterDescription;
}
private static void GenerateRequestModelDescription(HelpPageApiModel apiModel, ModelDescriptionGenerator modelGenerator, HelpPageSampleGenerator sampleGenerator)
{
ApiDescription apiDescription = apiModel.ApiDescription;
foreach (ApiParameterDescription apiParameter in apiDescription.ParameterDescriptions)
{
if (apiParameter.Source == ApiParameterSource.FromBody)
{
Type parameterType = apiParameter.ParameterDescriptor.ParameterType;
apiModel.RequestModelDescription = modelGenerator.GetOrCreateModelDescription(parameterType);
apiModel.RequestDocumentation = apiParameter.Documentation;
}
else if (apiParameter.ParameterDescriptor != null &&
apiParameter.ParameterDescriptor.ParameterType == typeof(HttpRequestMessage))
{
Type parameterType = sampleGenerator.ResolveHttpRequestMessageType(apiDescription);
if (parameterType != null)
{
apiModel.RequestModelDescription = modelGenerator.GetOrCreateModelDescription(parameterType);
}
}
}
}
private static void GenerateResourceDescription(HelpPageApiModel apiModel, ModelDescriptionGenerator modelGenerator)
{
ResponseDescription response = apiModel.ApiDescription.ResponseDescription;
Type responseType = response.ResponseType ?? response.DeclaredType;
if (responseType != null && responseType != typeof(void))
{
apiModel.ResourceDescription = modelGenerator.GetOrCreateModelDescription(responseType);
}
}
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "The exception is recorded as ErrorMessages.")]
private static void GenerateSamples(HelpPageApiModel apiModel, HelpPageSampleGenerator sampleGenerator)
{
try
{
foreach (var item in sampleGenerator.GetSampleRequests(apiModel.ApiDescription))
{
apiModel.SampleRequests.Add(item.Key, item.Value);
LogInvalidSampleAsError(apiModel, item.Value);
}
foreach (var item in sampleGenerator.GetSampleResponses(apiModel.ApiDescription))
{
apiModel.SampleResponses.Add(item.Key, item.Value);
LogInvalidSampleAsError(apiModel, item.Value);
}
}
catch (Exception e)
{
apiModel.ErrorMessages.Add(String.Format(CultureInfo.CurrentCulture,
"An exception has occurred while generating the sample. Exception message: {0}",
HelpPageSampleGenerator.UnwrapException(e).Message));
}
}
private static bool TryGetResourceParameter(ApiDescription apiDescription, HttpConfiguration config, out ApiParameterDescription parameterDescription, out Type resourceType)
{
parameterDescription = apiDescription.ParameterDescriptions.FirstOrDefault(
p => p.Source == ApiParameterSource.FromBody ||
(p.ParameterDescriptor != null && p.ParameterDescriptor.ParameterType == typeof(HttpRequestMessage)));
if (parameterDescription == null)
{
resourceType = null;
return false;
}
resourceType = parameterDescription.ParameterDescriptor.ParameterType;
if (resourceType == typeof(HttpRequestMessage))
{
HelpPageSampleGenerator sampleGenerator = config.GetHelpPageSampleGenerator();
resourceType = sampleGenerator.ResolveHttpRequestMessageType(apiDescription);
}
if (resourceType == null)
{
parameterDescription = null;
return false;
}
return true;
}
private static ModelDescriptionGenerator InitializeModelDescriptionGenerator(HttpConfiguration config)
{
ModelDescriptionGenerator modelGenerator = new ModelDescriptionGenerator(config);
Collection<ApiDescription> apis = config.Services.GetApiExplorer().ApiDescriptions;
foreach (ApiDescription api in apis)
{
ApiParameterDescription parameterDescription;
Type parameterType;
if (TryGetResourceParameter(api, config, out parameterDescription, out parameterType))
{
modelGenerator.GetOrCreateModelDescription(parameterType);
}
}
return modelGenerator;
}
private static void LogInvalidSampleAsError(HelpPageApiModel apiModel, object sample)
{
InvalidSample invalidSample = sample as InvalidSample;
if (invalidSample != null)
{
apiModel.ErrorMessages.Add(invalidSample.ErrorMessage);
}
}
}
}