#ifndef SHELL_H
#define SHELL_H
#pragma once

#include <iostream>
#include <sys/wait.h>
#include <unistd.h>
#include <string>
#include <vector>
#include <sstream>
#include <cstddef>
#include <csignal>
#include "command.h"
#include <wordexp.h>
#include "commandexecutor.h"
#include "stringtoargcargv.h"
using std::string;
using std::cin;
using std::cout;
using std::cerr;
using std::string;
using std::vector;
using std::istringstream;

namespace mshconsole {

    class Shell : public CommandExecutor
    {
        class Commands
        {
            Shell* parent;
            vector<Command*> commands; //commands that work the same thread of the shell
            vector<Command*> threadCommands; //commands that work on a different thread

        public:
            Commands(Shell*);
            void add(Command*, bool isthread=false);
            size_t howMany() const;
            int launch(const struct Params& args, bool launchThread=false);
        };

        static bool undoingLine;
        Commands cmds;
        string ps;
        string name;
        void (*shellSetup)(Shell *);
        void (*shellPostSetup)(Shell *);
        bool notLoop;

        int launchCmd(const struct Params& args);
        static void EofHandler(int);
        string* read_line();
        struct Params split_line(const string* line);

        class IsUndoingLineException {};
        class CommandNotFoundException {};

    public:
        Shell(string n="msh", string ps="MSH$", void (*s)(Shell*)=0, void (*pss)(Shell*)=0);
        string getPs() const;
        void setPs(const string &value);
        string getName() const;
        void setName(const string &value);
        int launch();
        void setShellSetup(void (*)(Shell *));
        void (*getShellSetup())(Shell*);
        void setShellPostSetup(void (*)(Shell *));
        void (*getShellPostSetup())(Shell*);

        //for in-shell commands
        void addCmd(Command *cmd, bool isThread=false);
        size_t howManyCmds() const;
        int executeCmd(const struct Params& args);
        int executeCmd(const string& args);
    };
}

#endif // SHELL_H