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

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(req.requestMethod=="POST")
    {
        if(req.post["username"].empty() ||
           req.post["password"].empty())
        {
            jsonfail(2,"Missing Parameter");
        }
        else
        {
            DBInfo db;
            if(db.readConfig()<0)
            {
                jsonfail(3,"Failed to read configure");
            }
            else
            {
                string uname=req.post["username"];
                string upass=req.post["password"];
                MySQLConn conn;
                if(db.connectProxy(conn)<0)
                {
                    jsonfail(4,"Failed to connect DB");
                }
                else
                {
                    bool authpass=false;
                    if(conn.exec(make_str("select count(username) from bs_user where username='",uname,"' and password='",upass,"'"),
                                 [&](MySQLResult& res)
                                 {
                                     res.stepRow([&](char** val,unsigned long* len)
                                                 {
                                                     if(string(val[0])=="1")
                                                     {
                                                         authpass=true;
                                                     }
                                                 });
                                 })<0)
                    {
                        jsonfail(5,"Failed to execute SQL.");
                    }
                    else
                    {
                        /// Try to mark session logged in
                        if(se.setUser(uname)<0)
                        {
                            jsonfail(6,"Failed to set session.");
                        }
                        else
                        {
                            j["success"]=1;
                        }
                    }
                }
            }
        }
    }
    else
    {
        jsonfail(1,"Request Method Not Supported");
    }

    res.content.append(j.dump());
    res.show();

    return 0;
}