//----------------------------------------------------------------------------//
//                           GNU GPL OS/K                                     //
//                                                                            //
//  Desc:       Kernel shell                                                  //
//                                                                            //
//                                                                            //
//  Copyright © 2018-2019 The OS/K Team                                       //
//                                                                            //
//  This file is part of OS/K.                                                //
//                                                                            //
//  OS/K is free software: you can redistribute it and/or modify              //
//  it under the terms of the GNU General Public License as published by      //
//  the Free Software Foundation, either version 3 of the License, or         //
//  any later version.                                                        //
//                                                                            //
//  OS/K is distributed in the hope that it will be useful,                   //
//  but WITHOUT ANY WARRANTY//without even the implied warranty of            //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
//  GNU General Public License for more details.                              //
//                                                                            //
//  You should have received a copy of the GNU General Public License         //
//  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
//----------------------------------------------------------------------------//

#include "shell.h"

Command_t cmdtable[] =
{
    { "beep", CmdBeep, "Make a beep" },
    { "exit", CmdQuit, "Initiate shutdown" },
    { "help", CmdHelp, "Show this message" },
    { "quit", CmdQuit, "Alias for 'exit'" },
    { NULL, NULL, NULL }
};

error_t CmdBeep(int argc, char **argv, char *cmdline)
{
    if (rand() % 64 == 0 || (argc > 1 && !strcmp(argv[1], "starwars"))) {
        IoDoStarWars();
    }

    else IoDoBeep();
    
    return EOK;
}

error_t CmdQuit(int argc, char **argv, char *cmdline)
{
    PoShutdownQemu();
    return EOK;
}

error_t CmdHelp(int argc, char **argv, char *cmdline)
{
    uint count = 0;
    Command_t *cmd;

    if (argc == 1) {
        KernLog("List of all shell built-ins:\n");
        for (cmd = cmdtable; cmd->name != NULL; cmd++, count++) {
            KernLog("\t%s\t%s\n", cmd->name, cmd->help);
        }
        KernLog("End of list; %u commands total\n\n", count);
    }
    
    return EOK;
}