/** Script Operator */
int sop(std::string cmd, std::map<char,int> var){
    /** Nothing */
    if(cmd.size()==0) return _nop;

    /** Case of a single static value */
    if((isdigit(cmd[0]) || isdigit(cmd[cmd.find_first_of(' ')+1])) && cmd.find_first_not_of("0123456789",cmd.find_first_of("0123456789"))==std::string::npos){
        int tmp;
        if(cmd.substr(cmd.find_first_of('+')+1).size()>1) tmp=stoi(cmd.substr(cmd.find_first_of(' ')+1));
        else tmp=cmd[cmd.find_first_of('+')+1]-'0';
        return tmp;
    }

    /** Case where there is a single variable */
    if(cmd.size()==1 || cmd.substr(cmd.find_first_of(' ')+1).size()==1){
        return var[cmd[cmd.find_first_of(' ')+1]];
    }

    /** Case where there is a variable and a static/variable value */
    int a;
    if(isalpha(cmd[cmd.find_first_of(' ')+1])) a=var[cmd[cmd.find_first_of(' ')+1]];
    else a=stoi(cmd.substr(cmd.find_first_of(' ')+1,cmd.find_first_not_of("0123456789",cmd.find_first_of(' ')+1)-cmd.find_first_of(' ')+1));
    std::string c;
    if(cmd.find_first_of('+')!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('+')+1])){
            if(cmd.substr(cmd.find_first_of('+')+1).size()>0) c=cmd.substr(cmd.find_first_of('+')+1);
        } else{
            c=cmd.substr(cmd.find_first_of('+')+1);
        }
        return (sop(c,var)!=_nop)?a+sop(c,var):a;
    }
    if(cmd.find_first_of('-')!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('-')+1])){
            if(cmd.substr(cmd.find_first_of('-')+1).size()>0) c=cmd.substr(cmd.find_first_of('-')+1);
        } else{
            c=cmd.substr(cmd.find_first_of('-')+1);
        }
        return (sop(c,var)!=_nop)?a-sop(c,var):a;
    }
    if(cmd.find_first_of('%')!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('%')+1])){
            if(cmd.substr(cmd.find_first_of('%')+1).size()>0) c=cmd.substr(cmd.find_first_of('%')+1);
        } else{
            c=cmd.substr(cmd.find_first_of('%')+1);
        }
        return (sop(c,var)!=_nop)?a%sop(c,var):a;
    }
    if(cmd.find_first_of('*')!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('*')+1])){
            if(cmd.substr(cmd.find_first_of('*')+1).size()>0) c=cmd.substr(cmd.find_first_of('*')+1);
        } else{
            c=cmd.substr(cmd.find_first_of('*')+1);
        }
        return (sop(c,var)!=_nop)?a*sop(c,var):a;
    }
    if(cmd.find("==")!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('=')+2])){
            if(cmd.substr(cmd.find_first_of('=')+2).size()>0) c=cmd.substr(cmd.find_first_of('=')+2);
        } else{
            c=cmd.substr(cmd.find_first_of('=')+1);
        }
        return (sop(c,var)!=_nop)?a==sop(c,var):a;
    }
    if(cmd.find("!=")!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('!')+2])){
            if(cmd.substr(cmd.find_first_of('!')+2).size()>0) c=cmd.substr(cmd.find_first_of('!')+2);
        } else{
            c=cmd.substr(cmd.find_first_of('!')+2);
        }
        return (sop(c,var)!=_nop)?a!=sop(c,var):a;
    }
    if(cmd.find("<=")!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('<')+2])){
            if(cmd.substr(cmd.find_first_of('<')+2).size()>0) c=cmd.substr(cmd.find_first_of('<')+2);
        } else{
            c=cmd.substr(cmd.find_first_of('<')+2);
        }
        return (sop(c,var)!=_nop)?a<=sop(c,var):a;
    }
    if(cmd.find(">=")!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('>')+2])){
            if(cmd.substr(cmd.find_first_of('>')+2).size()>0) c=cmd.substr(cmd.find_first_of('>')+2);
        } else{
            c=cmd.substr(cmd.find_first_of('>')+2);
        }
        return (sop(c,var)!=_nop)?a>=sop(c,var):a;
    }
    if(cmd.find_first_of('<')!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('<')+1])){
            if(cmd.substr(cmd.find_first_of('<')+1).size()>0) c=cmd.substr(cmd.find_first_of('<')+1);
        } else{
            c=cmd.substr(cmd.find_first_of('<')+1);
        }
        return (sop(c,var)!=_nop)?a<sop(c,var):a;
    }
    if(cmd.find_first_of('>')!=std::string::npos){
        if(isdigit(cmd[cmd.find_first_of('>')+1])){
            if(cmd.substr(cmd.find_first_of('>')+1).size()>0) c=cmd.substr(cmd.find_first_of('>')+1);
        } else{
            c=cmd.substr(cmd.find_first_of('>')+1);
        }
        return (sop(c,var)!=_nop)?a>sop(c,var):a;
    }
    return _nop;
}

int scriptInstruction(std::string cmd, std::map<char,int>& var, int i, std::string& sendThis){
    try{
        cmd=cmd.erase(0,1);
        if(cmd.find("goto")!=std::string::npos && cmd.size()>5){
            if(sop(cmd,var)!=_nop) return sop(cmd,var)-1;
            else{
                sendThis="=>"+cmd.substr(cmd.find_first_of(' ')+1);
                return i;
            }
        }
        if(cmd.find("skip")!=std::string::npos && cmd.size()>5){
            return i+sop(cmd,var);
        }
        if(cmd.find("back")!=std::string::npos && cmd.size()>5){
            return i-sop(cmd,var);
        }
        if(cmd.find("var")!=std::string::npos){
            var[cmd[4]]=sop(" "+cmd.substr(6),var);
            return i;
        }
        if(!cmd.find("sleep")){
            std::this_thread::sleep_for(std::chrono::milliseconds(sop(cmd,var)));
            return i;
        }
        if(!cmd.find("show")){
            if(sop(cmd,var)!=_nop) std::cout<<cmd.substr(5)<<"=="<<sop(cmd,var)<<std::endl;
            else std::cout<<cmd.substr(5)<<std::endl;
            return i;
        }
        if(!cmd.find("pause")){
            std::cout<<"Press a key to continue..."<<std::endl;
            system("pause>nul");
            return i;
        }
        if(!cmd.find("replace")){
            std::string str(cmd.substr(cmd.find_first_of(' ')+1));
            std::string answer("");
            while(str.find_first_of('$')!=std::string::npos){
                answer+=str.substr(0,str.find_first_of('$'))+std::to_string(var[str[str.find_first_of('$')+1]]);
                str=str.substr(str.find_first_of('$')+2);
            }
            sendThis=answer;
            return i;
        }
        if(!cmd.find("end")) return 999999;
        if(!cmd.find("if")){
            if(sop(cmd,var)) return i;
            else return i+1;
        }
        return i;
    }
    catch(std::exception& e){
        std::cerr<<"Line "<<i<<" : syntax error detected : "<<e.what()<<std::endl<<"->"<<cmd<<std::endl<<"Operation aborted..."<<std::endl;
        return 999999;
    }
}