DBHomework/addbooktype.cpp

#include "Session.h"
#include "Util.h"
#include "json.hpp"
using namespace std;
using json=nlohmann::json;

#define postval(NAME) string NAME=req.post[#NAME]

int main()
{
    Request req;
    Session se(req);
    Response res;
    json j;

    auto jsonfail=[&](int errcode,const std::string& errmsg)
    {
        j["success"]=0;
        j["errcode"]=errcode;
        j["errmsg"]=errmsg;
    };

    if(se.isNew()||se.getUser().empty())
    {
        jsonfail(1,"Please Login First");
    }

    DBInfo db;
    MySQLConn conn;
    if(db.readConfig()<0)
    {
        jsonfail(4,"Failed to read config");
    }
    else
    {
        if(db.connectProxy(conn)<0)
        {
            jsonfail(5,"Failed to connect DB");
        }
        else
        {
            if(conn.exec(make_str("select permission_level from bs_user where username='",
                                  se.getUser(),
                                  "'"),/// TODO
                                  ))
        }

    if(req.requestMethod!="POST")
    {
        jsonfail(2,"Unsupported request method");
    }
    else
    {
        if(req.post["booktype"].empty())
        {
            jsonfail(3,"Missing Parameters");
        }
        else
        {
            postval(booktype);
            DBInfo db;
            if(db.readConfig()<0)
            {
                jsonfail(4,"Failed to read config");
            }
            else
            {
                MySQLConn conn;
                if(db.connectProxy(conn)<0)
                {
                    jsonfail(5,"Failed to connect DB");
                }
                else
                {
                    if(conn.exec(make_str("insert into bs_booktype values ('",
                                          booktype,
                                          "')"),nullptr)<0)
                    {
                        jsonfail(6,"Failed to execute SQL");
                    }
                    else
                    {
                        if(conn.getAffectedRows()!=1)
                        {
                            jsonfail(7,"insert affects not equals 1");
                        }
                        else
                        {
                            j["success"]=1;
                        }
                    }
                }
            }
        }
    }

    return 0;
}