/*
 * DmitriyMX <dimon550@gmail.com>
 * 2018-05-23
 */
package mc.commands;

import lombok.extern.slf4j.Slf4j;
import mc.core.chat.CommandExecutor;
import mc.core.chat.CommanderChatProcessor;
import mc.core.chat.MessageType;
import mc.core.player.Player;
import mc.core.text.Text;
import mc.core.text.TextColor;
import mc.core.text.TextTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;

import java.util.Optional;

@Slf4j
public class HelpCommand implements CommandExecutor {
    private static final TextTemplate messageFormat = TextTemplate.builder()
            .arg("command", TextColor.RED)
            .append(Text.of(TextColor.GRAY, " - "))
            .arg("description", TextColor.WHITE)
            .build();

    @Autowired
    private ApplicationContext applicationContext;
    private CommanderChatProcessor commanderChatProcessor;

    @Override
    public String getName() {
        return "help";
    }

    @Override
    public Optional<String[]> getAliases() {
        return Optional.of(new String[]{"?"});
    }

    @Override
    public Optional<String> getUsage() {
        return Optional.empty();
    }

    @Override
    public String getDescription() {
        return "shows this message";
    }

    @Override
    public void execute(Player sender, String... args) {
        if (commanderChatProcessor == null) {
            commanderChatProcessor = applicationContext.getBean(CommanderChatProcessor.class);
            if (commanderChatProcessor == null) {
                log.error("Error get bean of type \"CommanderChatProcessor\". WTF?!");
                sender.getChannel().sendChatMessage(Text.of(TextColor.RED, "!!-Server error-!!"));
                return;
            }
        }

        commanderChatProcessor.getAllCommands().forEach(commandExecutor -> {
            Text message = messageFormat.apply(
                    "command", commandExecutor.getUsage().orElse(commandExecutor.getName()),
                    "description", commandExecutor.getDescription());
            sender.getChannel().sendChatMessage(message, MessageType.SYSTEM_MESSAGE);
        });
    }
}