Better defaults for zen cli (#302)

added ZenCmdBase::ResolveTargetHostSpec - this is a helper which provides better default behaviour for commands which interact with a local zen server instance. more specifically it picks a default based on which processes are actually running on the local machine

this change also wires up the Scrub command along with some required HttpClient improvements

2 files changed, 53 insertions, 2 deletions

diff --git a/src/zenhttp/httpclient.cpp b/src/zenhttp/httpclient.cpp
index 891ada83e..fa290ef52 100644
--- a/src/zenhttp/httpclient.cpp
+++ b/src/zenhttp/httpclient.cpp
@@ -83,6 +83,15 @@ CommonResponse(cpr::Response&& HttpResponse)
 {
 	const HttpResponseCode WorkResponseCode = HttpResponseCode(HttpResponse.status_code);
 
+	if (HttpResponse.status_code == 0)
+	{
+		// Client side failure code
+
+		return HttpClient::Response{
+			.StatusCode		 = WorkResponseCode,
+			.ResponsePayload = IoBufferBuilder::MakeCloneFromMemory(HttpResponse.error.message.data(), HttpResponse.error.message.size())};
+	}
+
 	if (WorkResponseCode == HttpResponseCode::NoContent || HttpResponse.text.empty())
 	{
 		return HttpClient::Response{.StatusCode = WorkResponseCode};
@@ -310,6 +319,13 @@ HttpClient::Delete(std::string_view Url)
 }
 
 HttpClient::Response
+HttpClient::Post(std::string_view Url)
+{
+	Impl::Session Sess = m_Impl->AllocSession(m_BaseUri, Url);
+	return CommonResponse(Sess->Post());
+}
+
+HttpClient::Response
 HttpClient::Post(std::string_view Url, const IoBuffer& Payload)
 {
 	Impl::Session Sess = m_Impl->AllocSession(m_BaseUri, Url);
@@ -381,6 +397,36 @@ HttpClient::Response::AsText()
 	return {};
 }
 
+std::string
+HttpClient::Response::ToText()
+{
+	if (!ResponsePayload)
+		return {};
+
+	switch (ResponsePayload.GetContentType())
+	{
+		case ZenContentType::kCbObject:
+			{
+				zen::ExtendableStringBuilder<1024> ObjStr;
+				zen::CbObject					   Object{SharedBuffer(ResponsePayload)};
+				zen::CompactBinaryToJson(Object, ObjStr);
+				return ObjStr.ToString();
+			}
+			break;
+
+		case ZenContentType::kCSS:
+		case ZenContentType::kHTML:
+		case ZenContentType::kJavaScript:
+		case ZenContentType::kJSON:
+		case ZenContentType::kText:
+		case ZenContentType::kYAML:
+			return std::string{AsText()};
+
+		default:
+			return "<unhandled content format>";
+	}
+}
+
 bool
 HttpClient::Response::IsSuccess() const noexcept
 {
diff --git a/src/zenhttp/include/zenhttp/httpclient.h b/src/zenhttp/include/zenhttp/httpclient.h
index edf3bf773..9f08835d3 100644
--- a/src/zenhttp/include/zenhttp/httpclient.h
+++ b/src/zenhttp/include/zenhttp/httpclient.h
@@ -35,13 +35,18 @@ public:
 		// validate that the content type or content itself makes sense as a string.
 		std::string_view AsText();
 
-		bool			IsSuccess() const noexcept;
-		inline explicit operator bool() const noexcept { return IsSuccess(); }
+		// Return text representation of the payload. Formats into JSON for structured
+		// objects, returns text as-is for text types like Text, JSON, HTML etc
+		std::string ToText();
+
+		bool   IsSuccess() const noexcept;
+		inline operator bool() const noexcept { return IsSuccess(); }
 	};
 
 	[[nodiscard]] Response Put(std::string_view Url, const IoBuffer& Payload);
 	[[nodiscard]] Response Get(std::string_view Url);
 	[[nodiscard]] Response Delete(std::string_view Url);
+	[[nodiscard]] Response Post(std::string_view Url);
 	[[nodiscard]] Response Post(std::string_view Url, const IoBuffer& Payload);
 	[[nodiscard]] Response Post(std::string_view Url, CbObject Payload);
 	[[nodiscard]] Response Post(std::string_view Url, CbPackage Payload);