#ifndef HTTPSERVER_H
#define HTTPSERVER_H

#include <QObject>
#include <QTcpServer>
#include <map>

const QString HTTP_ACTUAL_ETAG {"2021-12-05"}; // Change it if svg, css or ico was modified

class HttpServer : public QObject
{
    Q_OBJECT
public:
    explicit HttpServer(const QString& address, quint16 port, const QString& logFolder, const QString& mainChannel, QObject *parent = nullptr);
    ~HttpServer();

private:
    QString convertToClickableLink(const QString &httpLine);
    std::pair<QString,QString> splitUserNameAndMessage(const QString& rawLine);
    QString getRequestPath(const QString &req);
    QString getWordFromPath(const QString& path);
    void writeMainPage(QTcpSocket* socket, QString& urlPath, bool isHeadRequest);
    void writeErrorPage(QTcpSocket*);
    void removeBrakelineSymbols(QString& line);
    void replaceTag(QString& page, const QString& tag, const QString& payload);
    void consoleLog(const QString &message);
    void debugLog(const QString &url);
    QTcpServer* m_TcpServer;
    QString m_mainChannel;
    QString m_logFolder;

    std::map<QString, std::map<QString, QStringList>> m_backendInfo; // server, {channel, users}
    std::map<QString, bool> m_serversOnline;
    std::map<QString, QString> m_botsNick;

    const QString HEADER_HTML = "\
HTTP/1.1 200 OK\r\n\
Content-Type: text/html; charset=utf-8\r\n\
Content-Length: {{SIZE}}\r\n\r\n";

    const QString HEADER_TEXT = "\
HTTP/1.1 200 OK\r\n\
Content-Type: text/plain; charset=utf-8\r\n\
Content-Length: {{SIZE}}\r\n\r\n";

    const QString HEADER_CSS = "\
HTTP/1.1 200 OK\r\n\
Content-Type: text/css\r\n\
Cache-Control: public, max-age=31536000\r\n\
ETag: \""+HTTP_ACTUAL_ETAG+"\"\r\n\
Content-Length: {{SIZE}}\r\n\r\n";

    const QString HEADER_SVG = "\
HTTP/1.1 200 OK\r\n\
Content-Type: image/svg+xml\r\n\
Cache-Control: public, max-age=31536000\r\n\
ETag: \""+HTTP_ACTUAL_ETAG+"\"\r\n\
Content-Length: {{SIZE}}\r\n\r\n";

    const QString HEADER_ICO = "\
HTTP/1.1 200 OK\r\n\
Content-Type: image/ico\r\n\
Cache-Control: public, max-age=31536000\r\n\
ETag: \""+HTTP_ACTUAL_ETAG+"\"\r\n\
Content-Length: {{SIZE}}\r\n\r\n";

    const QString HEADER_304 = "HTTP/1.1 304 Not Modified\r\nContent-Length: 0\r\n\r\n";
    const QString HEADER_404 = "HTTP/1.1 404 Not found\r\n\r\n";

    const QString HTML_SERVER_SECTION = "\
                 <div class=\"left_menu__item\">\n\
                    <div class=\"left_menu__item_title\">\n\
                        <span style=\"font-size: 17px;\">{{ONLINE_STATUS}}</span>{{SERVER_NAME}}\n\
                    </div>\n\
                    <div class=\"left_menu__item_rooms\">\n\
{{CHANNELS}}\
                    </div>\n\
                 </div>\n";

    const QString HTML_SERVER_ONLINE_MARKER = "&#9989;";
    const QString HTML_SERVER_OFFLINE_MARKER = "&#10060;";

    const QString HTML_SERVER_SECTION_CHANNEL = "\
                        <a href=\"{{CHANNEL_LINK}}\" class=\"left_menu__item_link\">{{CHANNEL_NAME}}</a>\n";
    const QString HTML_SERVER_SECTION_CHANNEL_SELECTED = "\
                        <a href=\"{{CHANNEL_LINK}}\" class=\"left_menu__item_link__selected\">{{CHANNEL_NAME}}</a>\n";

    const QString HTML_ONLINE_POINT = "\
<div class=\"main_middle__online_point\">\n\
                            {{NICKNAME}}\n\
                        </div>\n";

    const QString HTML_PAYLOAD_LIST_POINT_FOLDER = "\
               <a href=\"{{POINT_LINK}}\" class=\"main_payload__block\">\n\
                    <div class=\"main_payload__block_folder\">\n\
                    </div>\n\
                    <div class=\"main_payload__block_text\">\n\
                        {{POINT_CONTENT}}\n\
                    </div>\n\
               </a>\n";

    const QString HTML_PAYLOAD_LIST_POINT_MESSAGE = "\
               <a href=\"{{POINT_LINK}}\" class=\"main_payload__block\">\n\
                    <div class=\"main_payload__block_message\">\n\
                    </div>\n\
                    <div class=\"main_payload__block_text\">\n\
                        {{POINT_CONTENT}}\n\
                    </div>\n\
               </a>\n";

    const QString HTML_PAYLOAD_LIST_CHAT_MESSAGE = "\
               <div class=\"main_payload__chat\">\n\
                    <div class=\"main_payload__chat_username\">\n\
                        {{USERNAME}}\n\
                    </div>\n\
                    <div class=\"main_payload__chat_mail\">\n\
                        {{MESSAGE_TEXT}}\n\
                    </div>\n\
               </div>\n";

    const QString HTML_PAYLOAD_ERROR = "\
<div class=\"main_payload__error\">\n\
                    <span style=\"color: red; text-align: center; display: block; font-size: 24px;\">{{ERROR_TITLE}}</span><br>\n\
                        {{ERROR_TEXT}}\n\
                    </div>";

private slots:
    void acceptor();
    void reader();

public slots:
    void ircBotFirstInfo(QString server, QStringList channels); // needed for permanent offline servers
    void ircClientAction(QString server, QString channel, QStringList users);
    void ircServerOnline(QString server, quint8 status /*0 or 1*/);
    void ircBotNic(QString server, QString nickname);
};

#endif // HTTPSERVER_H