http_io.hpp

/*
    Copyright (c) 2020 Patrick Moffitt

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
*/

#ifndef HTTP_IO_HPP
#define HTTP_IO_HPP
#include <iostream>
#include <string>
#include <map>
#include <iterator>
#include <vector>
#include <cctype>
#include <algorithm>
#include <regex>
#include "string_util.hpp"

using namespace std;

class http_io {
    const string content_type_parser = R"END(^(.*?);\s(.*)$)END";
    regex content_type_regex{content_type_parser, std::regex_constants::optimize};

public:
    map<string, string> env;
    map<string, string> header;  // HTTP response (output) headers.
    map<int, string> http_status{
            {100, "Continue"},
            {101, "Switching Protocols"},
            {200, "OK"},
            {201, "Created"},
            {202, "Accepted"},
            {203, "Non-Authoritative Information"},
            {204, "No Content"},
            {205, "Reset Content"},
            {206, "Partial Content"},
            {300, "Multiple Choices"},
            {301, "Moved Permanently"},
            {302, "Found"},
            {303, "See Other"},
            {304, "Not Modified"},
            {305, "Use Proxy"},
            {307, "Temporary Redirect"},
            {400, "Bad Request"},
            {401, "Unauthorized"},
            {402, "Payment Required"},
            {403, "Forbidden"},
            {404, "Not Found"},
            {405, "Method Not Allowed"},
            {406, "Not Acceptable"},
            {407, "Proxy Authentication Required"},
            {408, "Request Time-out"},
            {409, "Conflict"},
            {410, "Gone"},
            {411, "Length Required"},
            {412, "Precondition Failed"},
            {413, "Request Entity Too Large"},
            {414, "Request-URI Too Large"},
            {415, "Unsupported Media Type"},
            {416, "Requested range not satisfiable"},
            {417, "Expectation Failed"},
            {500, "Internal Server Error"},
            {501, "Not Implemented"},
            {502, "Bad Gateway"},
            {503, "Service Unavailable"},
            {504, "Gateway Time-out"},
            {505, "HTTP Version not supported"}
    };
    bool https{false};
    string locale;

    void get_env(char *env_p[]);
    explicit http_io();
    void print_env(ostream &o_stream);
    void respond(ostringstream &o_stream,
                 int status = 200,
                 string mime = "text/plain",
                 string charset = "utf-8");
    string_util su;
};


#endif //HTTP_IO_HPP