TraceMethod.hpp

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#pragma once
#include <Thoth/Http/Methods/_base/MethodConcept.hpp>
 
namespace Thoth::Http {
    struct TraceMethod {
        static constexpr std::string_view MethodName() { return "TRACE"; }
        static constexpr bool IsSafe()       { return true; }
        static constexpr bool IsIdempotent() { return true; }
 
        static WebResultOper ValidateRequest(string_view body, const Url&, const Headers&) {
            if (!body.empty())
                return std::unexpected{ StatusCodeEnum::BAD_REQUEST };
            return {};
        }
 
        static WebResultOper ValidateResponse(StatusCodeEnum statusCode, string_view body, const Url&, const Headers& headers) {
            string str;
            auto ref{ &str };
 
            if (statusCode == StatusCodeEnum::OK)
                if (*headers.Get("Content-Type").value_or(ref) != "message/http")
                    return std::unexpected{ StatusCodeEnum::BAD_GATEWAY };
 
 
            if ((statusCode == StatusCodeEnum::NO_CONTENT || statusCode == StatusCodeEnum::NOT_MODIFIED) && !body.empty())
                return std::unexpected{ StatusCodeEnum::BAD_GATEWAY };
 
            return {};
        }
    };
 
    static_assert(MethodConcept<TraceMethod>);
}