/// <summary>
/// Checks a parameter for any <see cref="SendAsHeaderAttribute"/> attributes.
/// </summary>
/// <param name="requestBuilder">A request builder instance.</param>
/// <param name="attrs">The parameters attributes.</param>
/// <param name="argument">The parameters actual value.</param>
/// <returns>The request builder instance.</returns>
internal static HttpRequestBuilder CheckParameterForSendAsHeader(
this HttpRequestBuilder requestBuilder,
IEnumerable <Attribute> attrs,
object argument)
{
void AddHeader(string name, string format, object arg)
{
if (string.IsNullOrEmpty(format) == false)
{
requestBuilder.AddHeader(
name,
string.Format(format, arg.ToString()));
}
else
{
requestBuilder.AddHeader(
name,
arg.ToString());
}
}
foreach (var attr in attrs.OfType <SendAsHeaderAttribute>())
{
if (typeof(IEnumerable <string>).IsAssignableFrom(argument.GetType()) == true)
{
foreach (var item in (IEnumerable <string>)argument)
{
AddHeader(attr.Name, attr.Format, item);
}
}
else
{
AddHeader(attr.Name, attr.Format, argument);
}
}
return(requestBuilder);
}
/// <summary>
/// Adds the method headers to a <see cref="HttpRequestBuilder"/>.
/// </summary>
/// <param name="requestBuilder">A <see cref="HttpRequestBuilder"/> instance.</param>
/// <param name="method">The <see cref="MethodInfo"/>.</param>
/// <param name="names">A list of keys.</param>
/// <param name="values">A list of values.</param>
/// <returns>The <see cref="HttpRequestBuilder"/> instance.</returns>
public static HttpRequestBuilder AddMethodHeaders(
this HttpRequestBuilder requestBuilder,
MethodInfo method,
IEnumerable <string> names,
IEnumerable <object> values)
{
var headerAttrs = method
.GetCustomAttributes <AddHeaderAttribute>()
.Union(
method.DeclaringType.GetCustomAttributes <AddHeaderAttribute>());
if (headerAttrs.Any() == true)
{
foreach (var attr in headerAttrs)
{
requestBuilder.AddHeader(
attr.Header,
attr.Value.ExpandString(names, values));
}
}
return(requestBuilder);
}
/// <summary>
/// Checks a parameter for attributes.
/// </summary>
/// <param name="requestBuilder">The request builder.</param>
/// <param name="parm">The parameter.</param>
/// <param name="argument">The parameters value.</param>
/// <param name="uri">A variable to receive a Uri.</param>
/// <param name="formUrlContent">A variable to receive the a value indicating whether or not there is form url content.</param>
/// <param name="contentDisposition">A variable to receive the a value indicating whether or not there is content disposition.</param>
internal void CheckParameterAttributes(
HttpRequestBuilder requestBuilder,
ParameterInfo parm,
object argument,
out string uri,
out bool formUrlContent,
out bool contentDisposition)
{
uri = null;
formUrlContent = false;
contentDisposition = false;
var attrs = parm.GetCustomAttributes();
if (attrs == null ||
attrs.Any() == false ||
argument == null)
{
return;
}
/*
* if (requestBuilder.IsContentSet == true)
* {
* return;
* }
*/
var urlAttr = attrs.OfType <UriAttribute>().FirstOrDefault();
if (urlAttr != null)
{
uri = argument.ToString();
}
var sendAsAttr = attrs.OfType <SendAsContentAttribute>().FirstOrDefault();
if (sendAsAttr != null)
{
if (typeof(HttpContent).IsAssignableFrom(parm.ParameterType) == true)
{
requestBuilder.SetContent((HttpContent)argument);
}
else if (typeof(Stream).IsAssignableFrom(parm.ParameterType) == true)
{
requestBuilder.SetContent(new StreamContent((Stream)argument));
}
else
{
string contType = sendAsAttr.ContentType ?? this.contentType;
var serializer = this.options.GetObjectSerializer(contType);
if (serializer == null)
{
throw new NotSupportedException($"Serializer for {contType} not found");
}
requestBuilder.SetContent(new StringContent(
serializer.SerializeObject(argument),
sendAsAttr.Encoding ?? Encoding.UTF8,
serializer.ContentType));
}
return;
}
var formUrlAttr = attrs.OfType <SendAsFormUrlAttribute>().FirstOrDefault();
if (formUrlAttr != null)
{
formUrlContent = true;
var argType = argument.GetType();
if (argument is Dictionary <string, string> strStrDictionayArgument)
{
requestBuilder.SetContent(
new FormUrlEncodedContent(
(Dictionary <string, string>)argument));
}
else if (argument is Dictionary <string, object> strObjDictionaryArgument)
{
requestBuilder.SetContent(
new FormUrlEncodedContent(
((Dictionary <string, object>)argument)
.Select(
kvp =>
{
return(new KeyValuePair <string, string>(
kvp.Key,
kvp.Value?.ToString()));
})));
}
else if (parm.ParameterType.IsModelObject() == true)
{
var list = new Dictionary <string, string>();
var properties = argument.GetType().GetProperties();
foreach (var property in properties)
{
list.Add(
property.Name,
property.GetValue(argument)?.ToString());
}
requestBuilder.SetContent(new FormUrlEncodedContent(list));
}
else
{
requestBuilder.AddFormUrlProperty(
formUrlAttr.Name ?? parm.Name,
argument.ToString());
}
return;
}
var contentDispAttr = attrs.OfType <SendAsContentDispositionAttribute>().FirstOrDefault();
if (contentDispAttr != null)
{
contentDisposition = true;
requestBuilder.SetMultipartContent(true);
if (contentDispAttr.IsName == true)
{
requestBuilder.SetContentDispositionHeader(c => c.Name = (string)argument);
}
else if (contentDispAttr.IsFileName == true)
{
requestBuilder.SetContentDispositionHeader(c => c.FileName = (string)argument);
}
else if (contentDispAttr.IsFileNameStar)
{
requestBuilder.SetContentDispositionHeader(c => c.FileNameStar = (string)argument);
}
return;
}
requestBuilder
.CheckParameterForSendAsQuery(attrs, parm, argument)
.CheckParameterForSendAsHeader(attrs, argument);
}
/// <summary>
/// Checks the arguments for specific ones.
/// </summary>
/// <param name="requestBuilder">A request builder.</param>
/// <param name="uri">A variable to receive a Uri.</param>
/// <returns>An array of argument names.</returns>
private string[] CheckArgsAndBuildRequest(
HttpRequestBuilder requestBuilder,
out string uri)
{
uri = null;
var responseAttr = this.MethodInfo.GetMethodOrTypeAttribute <HttpResponseProcessorAttribute>();
if (responseAttr != null)
{
this.responseProcessorType = responseAttr.ResponseProcesorType;
}
var formUrlAttrs = this.MethodInfo.GetCustomAttributes <AddFormUrlEncodedPropertyAttribute>();
if (formUrlAttrs.Any() == true)
{
foreach (var attr in formUrlAttrs)
{
requestBuilder.AddFormUrlProperty(attr.Key, attr.Value);
}
}
Type returnType = this.MethodInfo.ReturnType;
if (returnType.IsAsync(out Type taskType) == true)
{
returnType = taskType;
}
bool formUrlContent = false;
bool contentDisposition = false;
ParameterInfo[] parms = this.MethodInfo.GetParameters();
if (parms == null)
{
return(new string[0]);
}
string[] names = new string[parms.Length];
for (int i = 0; i < parms.Length; i++)
{
names[i] = parms[i].Name;
Type parmType = parms[i].ParameterType;
if (parms[i].IsOut == true)
{
var fromHeader = parms[i].GetCustomAttribute <FromHeaderAttribute>();
if (fromHeader != null)
{
this.fromHeaders = this.fromHeaders ?? new Dictionary <int, string>();
this.fromHeaders.Add(i, fromHeader.Name);
}
else
{
var fromResponse = parms[i].GetCustomAttribute <FromResponseAttribute>();
if (fromResponse != null)
{
this.fromResponses = this.fromResponses ?? new Dictionary <int, Tuple <FromResponseAttribute, Type> >();
this.fromResponses.Add(i, Tuple.Create(fromResponse, parmType.GetElementType()));
}
else
{
var elemParmType = parms[i].ParameterType.GetElementType();
if (elemParmType == typeof(HttpResponseMessage))
{
this.responseArg = i;
}
else
{
this.dataArg = i;
this.dataArgType = parmType;
}
}
}
continue;
}
if (returnType != typeof(void) &&
parmType == typeof(Func <,>).MakeGenericType(typeof(HttpResponseMessage), returnType))
{
this.responseFuncArg = i;
}
else if (parmType == typeof(Action <HttpRequestMessage>))
{
this.requestAction = (Action <HttpRequestMessage>) this.Arguments[i];
}
else if (parmType == typeof(Action <HttpResponseMessage>))
{
this.responseAction = (Action <HttpResponseMessage>) this.Arguments[i];
}
else if (parmType == typeof(CancellationTokenSource))
{
this.cancellationTokenSource = (CancellationTokenSource)this.Arguments[i];
}
else if (parmType == typeof(CancellationToken))
{
this.cancellationToken = (CancellationToken)this.Arguments[i];
}
else if (parmType == typeof(IUriBuilder))
{
uri = ((IUriBuilder)this.Arguments[i]).BuildUri().ToString();
}
else
{
this.CheckParameterAttributes(
requestBuilder,
parms[i],
this.Arguments[i],
out string parmUri,
out formUrlContent,
out contentDisposition);
if (parmUri != null)
{
uri = parmUri;
}
if (formUrlContent == false &&
requestBuilder.IsContentSet == false &&
parms[i].ParameterType.IsModelObject() == true)
{
var serializer = this.options.GetObjectSerializer(this.contentType);
if (serializer == null)
{
throw new NotSupportedException($"Serializer for {this.contentType} not found");
}
requestBuilder.SetContent(new StringContent(
serializer.SerializeObject(this.Arguments[i]),
Encoding.UTF8,
this.contentType));
}
}
}
return(names);
}
/// <summary>
/// Builds a request, sends it, and proecesses the response.
/// </summary>
/// <param name="httpMethod">The http method.</param>
/// <param name="baseUri">The base Uri.</param>
/// <param name="uriPath">The Uri path.</param>
/// <param name="contentType">The content type.</param>
/// <param name="timeout">A value representing the request timeout.</param>
/// <returns>The result of the request.</returns>
public async Task <object> BuildAndSendRequestAsync(
HttpMethod httpMethod,
string baseUri,
string uriPath,
string contentType,
TimeSpan?timeout)
{
var requestBuilder = new HttpRequestBuilder()
.SetMethod(httpMethod)
.SetHttpVersion(this.options.HttpVersion);
var names = this.CheckArgsAndBuildRequest(requestBuilder, out string uri);
if (string.IsNullOrWhiteSpace(uri) == false)
{
baseUri = uri;
}
requestBuilder
.AddMethodHeaders(this.MethodInfo, names, this.Arguments)
.SetUri(Utility.CombineUri(baseUri, uriPath.ExpandString(names, this.Arguments)));
Type returnType = this.MethodInfo.ReturnType;
await requestBuilder.AddAuthorizationHeaderAsync(
this.MethodInfo,
names,
this.Arguments,
this.options.Services);
HttpCompletionOption completionOption = HttpCompletionOption.ResponseContentRead;
if (returnType == typeof(HttpResponseMessage) ||
returnType == typeof(Task <HttpResponseMessage>) ||
returnType == typeof(Task <Stream>))
{
completionOption = HttpCompletionOption.ResponseHeadersRead;
}
if (timeout.HasValue == true)
{
this.SetTimeout(timeout.Value);
}
var httpRequestSenderFactory = this.options.Services?.GetService <IHttpRequestSenderFactory>();
var httpClient = this.options.GetHttpClient();
var requestSender = httpRequestSenderFactory?.CreateRequestSender(httpClient, this) ??
new HttpRequestSender(httpClient, this);
if (returnType.IsAsync(out Type taskType) == true &&
taskType != typeof(void))
{
Type asyncType = typeof(AsyncCall <>).MakeGenericType(taskType);
object obj = Activator.CreateInstance(asyncType, requestSender, this);
var mi = asyncType.GetMethod("SendAsync", new Type[] { typeof(HttpRequestBuilder), typeof(HttpCompletionOption) });
return(mi.Invoke(obj, new object[] { requestBuilder, completionOption }));
}
var response = await requestSender
.SendAsync(
requestBuilder,
completionOption)
.ConfigureAwait(false);
return(await this.ProcessResultAsync(
response,
returnType));
}
/// <summary>
/// Checks a parameter for any <see cref="SendAsQueryAttribute"/> attributes.
/// </summary>
/// <param name="requestBuilder">A request builder instance.</param>
/// <param name="attrs">The parameters attributes.</param>
/// <param name="parm">The parameter.</param>
/// <param name="argument">The parameters actual value.</param>
/// <returns>The request builder instance.</returns>
internal static HttpRequestBuilder CheckParameterForSendAsQuery(
this HttpRequestBuilder requestBuilder,
IEnumerable <Attribute> attrs,
ParameterInfo parm,
object argument)
{
foreach (var query in attrs.OfType <SendAsQueryAttribute>())
{
var name = query.Name.IsNullOrEmpty() == false ? query.Name : parm.Name;
if (parm.ParameterType.IsGenericType == true)
{
if (parm.ParameterType.GetGenericTypeDefinition() == typeof(IDictionary <,>))
{
IDictionary <string, string> queryMap = null;
if (typeof(IDictionary <string, string>).IsAssignableFrom(parm.ParameterType) == true)
{
queryMap = (IDictionary <string, string>)argument;
}
else if (typeof(IDictionary <object, object>).IsAssignableFrom(parm.ParameterType) == true)
{
queryMap = ((IDictionary <object, object>)argument)
.ToDictionary(key => key.Key.ToString(), value => value.Value.ToString());
}
else if (typeof(IDictionary <string, object>).IsAssignableFrom(parm.ParameterType) == true)
{
queryMap = ((IDictionary <string, object>)argument)
.ToDictionary(key => key.Key, value => value.Value.ToString());
}
else if (typeof(IDictionary <object, string>).IsAssignableFrom(parm.ParameterType) == true)
{
queryMap = ((IDictionary <object, string>)argument)
.ToDictionary(key => key.Key.ToString(), value => value.Value);
}
if (query != null)
{
foreach (var item in queryMap)
{
var value = parm.ConvertParameterValue(item.Value, query.Format, query.Base64, query.Encoding);
requestBuilder.AddQueryString(item.Key, value);
}
}
}
else if (typeof(IEnumerable <string>).IsAssignableFrom(parm.ParameterType) == true)
{
foreach (var item in (IEnumerable <string>)argument)
{
var value = parm.ConvertParameterValue(item, query.Format, query.Base64, query.Encoding);
requestBuilder.AddQueryString(name, value);
}
}
}
else
{
var value = parm.ConvertParameterValue(argument, query.Format, query.Base64, query.Encoding);
requestBuilder.AddQueryString(name, value);
}
}
return(requestBuilder);
}
