#include "server.h"

constexpr static const char* GET("GET");

constexpr static const char* REQUEST_METHOD("REQUEST_METHOD");
constexpr static const char* REQUEST_URI("REQUEST_URI");

constexpr static const char* DOCUMENT_URI("DOCUMENT_URI");
constexpr static const char* DOCUMENT_ROOT("DOCUMENT_ROOT");

constexpr static const char* SCRIPT_NAME("SCRIPT_NAME");
constexpr static const char* SCRIPT_FILENAME("SCRIPT_FILENAME");

constexpr static const char* status405("Status: 405 Method Not Allowed");
constexpr static const char* contentTypeHtml("Content-type: text/html");

constexpr static const char* headerEnd("\n\n");

Server::Server():
    requestCount(0)
{}

Server::~Server() {
}

void Server::handleRequest(FCGX_Request& request) {
    ++requestCount;

    fcgi_streambuf cin_fcgi_streambuf(request.in);
    fcgi_streambuf cout_fcgi_streambuf(request.out);
    fcgi_streambuf cerr_fcgi_streambuf(request.err);
    std::ostream os{&cout_fcgi_streambuf};
    std::ostream errs{&cerr_fcgi_streambuf};
    std::istream is{&cin_fcgi_streambuf};

    std::string requestMethod(FCGX_GetParam(REQUEST_METHOD, request.envp));
    if (requestMethod != GET) {
        os << status405;
        return;
    }

    try {
        printEnv(os, request);

        os << requestCount;
    } catch (const std::exception e) {
        os << contentTypeHtml;
        os << headerEnd;
        os << e.what();
    }
}

void Server::printEnv(std::ostream& out, FCGX_Request& request) {
    char **envp = request.envp;
    for (int i = 0; envp[i] != nullptr; ++i) {
        out << envp[i] << "</br>";
    }
}