FactoryCraft-Server/FactoryCraft/ChatCommandExecutor.cpp

#include "ChatCommandExecutor.h"

#include "BlockInfoCommand.h"
#include "Chat.h"
#include "Game.h"
#include "GrantCommand.h"
#include "ModeCommand.h"
#include "SaveCommand.h"
#include "ExitCommand.h"

ChatCommandExecutor::ChatCommandExecutor()
    : ReferenceCounter()
{
    knownCommands.add(new SaveCommand());
    knownCommands.add(new CrantCommand());
    knownCommands.add(new BlockInfoCommand());
    knownCommands.add(new ModeCommand());
    // Add more commands here
    for (ChatCommand* command : knownCommands)
    {
        Game::INSTANCE->consoleInput->addPossibleCommand(
            dynamic_cast<Framework::ConsoleCommand*>(command->getThis()));
        // exit command only available via console and not via chat
        Game::INSTANCE->consoleInput->addPossibleCommand(new ExitCommand());
    }
}

bool ChatCommandExecutor::execute(Framework::Text line, Entity* zActor)
{
    if (line.hasAt(0, "/"))
    {
        for (ChatCommand* command : knownCommands)
        {
            if (line.hasAt(0, Framework::Text("/") + command->getName()))
            {
                if (line.getLength() > command->getName().getLength() + 1
                    && !line.hasAt(command->getName().getLength() + 1, " "))
                {
                    continue;
                }
                Framework::RCArray<Framework::Text> params;
                int start = command->getName().getLength() + 2;
                bool escaped = 0;
                for (int i = command->getName().getLength() + 2;
                    i < line.getLength();
                    i++)
                {
                    if (line.hasAt(i, " ") && !escaped)
                    {
                        if (start < i)
                        {
                            if (line.hasAt(start, "'")
                                && line.hasAt(i - 1, "'"))
                            {
                                params.add(line.getTeilText(start + 1, i - 1));
                            }
                            else
                            {
                                params.add(line.getTeilText(start, i));
                            }
                        }
                        start = i + 1;
                    }
                    else if (line.hasAt(i, "'"))
                    {
                        escaped = !escaped;
                    }
                }
                if (start < line.getLength())
                {
                    if (line.hasAt(start, "'")
                        && line.hasAt(line.getLength() - 1, "'"))
                    {
                        params.add(
                            line.getTeilText(start + 1, line.getLength() - 1));
                    }
                    else
                    {
                        params.add(line.getTeilText(start, line.getLength()));
                    }
                }
                int index = 0;
                for (ChatCommandParameter* param : command->getParams())
                {
                    if (params.getEntryCount() > index
                        && param->isLegalValue(*params.z(index)))
                    {
                        index++;
                    }
                    else
                    {
                        bool isError = 0;
                        if (param->isOptional() && zActor)
                        {
                            Framework::Text defaultValue
                                = param->getDefaultValue(zActor);
                            if (!param->isLegalValue(defaultValue))
                            {
                                isError = 1;
                            }
                            else
                            {
                                params.add(
                                    new Framework::Text(defaultValue), index++);
                            }
                        }
                        else
                        {
                            isError = 1;
                        }
                        if (isError)
                        {
                            Framework::Text error
                                = "Illegal parameter at position ";
                            error.append() << (index + 1) << ": ";
                            if (params.getEntryCount() > index)
                            {
                                error += *params.z(index);
                            }
                            else
                            {
                                error += "(no parameter was given)";
                            }
                            error.append() << "\n" << command->getHelp();
                            Game::INSTANCE->zChat()->sendMessageTo(
                                error, zActor, Chat::CHANNEL_ERROR);
                            return true;
                        }
                    }
                }
                if (index != params.getEntryCount())
                {
                    Framework::Text error = "Illegal number of parameters. "
                                            "First unknown parameter: ";
                    error.append() << *params.z(index) << "\n"
                                   << command->getHelp();
                    Game::INSTANCE->zChat()->sendMessageTo(
                        error, zActor, Chat::CHANNEL_ERROR);
                    return true;
                }
                if (zActor
                    && command->getSecurityLevel(params)
                           > zActor->getChatSecurityLevel())
                {
                    Framework::Text error
                        = "This command requires a security level of at least ";
                    error.append()
                        << command->getSecurityLevel(params)
                        << ". You have currently a security level of "
                        << zActor->getChatSecurityLevel()
                        << ". Ask someone with the required security lavel to "
                           "grant you the same level.";
                    Game::INSTANCE->zChat()->sendMessageTo(
                        error, zActor, Chat::CHANNEL_ERROR);
                    return true;
                }
                command->execute(params, zActor);
                return true;
            }
        }
    }
    return false;
}