#include "commands.h"

using namespace Cmds;

Commands::Commands()
{
    if(created) throw CommandsAlreadyCreatedException();
    created=true;

    //add builtin commands
    add(new Command("cd", &cdExecute));
    add(new Command("exit", &exitExecute));
    add(new Command("help", &helpExecute));
}

void Commands::add(Command* cmd){
    commands.push_back(cmd);
}

size_t Commands::howMany(){
    return commands.size();
}

int Commands::launch(const vector<string>* args){
    for(int i=0; i<commands.size(); i++){
        if((commands[i]->getName())==args->operator [](0)){
            return commands[i]->execute(args);
        }
    }
    throw CommandNotFoundException();
}

bool Commands::created = false;

//builtin commands