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path: root/src/main/java/net/uomc/mineshaft/RobCommand.java
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package net.uomc.mineshaft;

import java.util.Optional;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;

import com.mouldycheerio.dbot.commands.CommandDetails;
import com.mouldycheerio.dbot.commands.cooldowns.CooldownCommand;
import com.mouldycheerio.dbot.util.EventWaiter;
import com.mouldycheerio.dbot.util.PeelingUtils;
import com.vdurmont.emoji.EmojiParser;

import net.dv8tion.jda.api.EmbedBuilder;
import net.dv8tion.jda.api.entities.Member;
import net.dv8tion.jda.api.entities.Message;
import net.dv8tion.jda.api.entities.emoji.Emoji;
import net.dv8tion.jda.api.entities.emoji.UnicodeEmoji;
import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
import net.dv8tion.jda.api.events.message.react.MessageReactionAddEvent;
import net.uomc.mineshaft.blacksmith.Sword;

public class RobCommand extends CooldownCommand {

    private static final UnicodeEmoji FLEE_EMOJI = Emoji.fromUnicode(EmojiParser.parseToUnicode(":runner:"));
    private static final UnicodeEmoji FIGHT_EMOJI = Emoji.fromUnicode(EmojiParser.parseToUnicode(":crossed_swords:"));
    private static final long BASE_DAMAGE = 14;
    private static final long CONFIRM_WAIT_SECONDS = 10;
    private static final double FLEE_CHANCE = 0.3;

    private Mineshaft bot;
    private String pvpEmoji;

    protected RobCommand(Mineshaft bot) {
        super(bot);
        // TODO reset this
        setCooldown(60l * 15l * 1000l);
        //setCooldown(0l);
        this.bot = bot;
        setDetails(CommandDetails.from("kill,pvp,rob,fight,challenge", "kill another player"));
        pvpEmoji = EmojiParser.parseToUnicode(":crossed_swords:");
    }

    @Override
    public boolean trigger(MessageReceivedEvent e) {
        String[] args = e.getMessage().getContentRaw().split(" ");
        if (args.length < 2) {
            e.getMessage().reply(":x: Please specify a target! `kill @user`").queue();
            return false;
        }

        Optional<Member> mentionToMember = PeelingUtils.mentionToMember(args[1], e.getGuild());
        if (!mentionToMember.isPresent()) {
            e.getMessage().reply(":x: Invalid Target! `kill @user`").queue();
            return false;
        }
        Member target = mentionToMember.get();
        if (target.equals(e.getMember())) {
            e.getMessage().reply(":x: You cannot fight yourself!").queue();
            return false;
        }

        if (!canFight(e.getMember())) {
            e.getMessage().reply(":x: You need at least "+ Sword.swordToEmoji(1) + "to fight.\n💡 Use `m!blacksmith` to forge one").queue();
            return false;
        }

        if (bot.getPlayerStats().isInBattle(e.getMember())) {
            e.getMessage().reply(":x: You are already fighting someone else!").queue();
            return false;
        }

        if (bot.getPlayerStats().isInBattle(target)) {
            e.getMessage().reply(":x: " + target.getAsMention() + " is already fighting someone else!").queue();
            return false;
        }


        if (bot.getPlayerStats().isNether(target) != bot.getPlayerStats().isNether(e.getMember())) {
            e.getMessage().reply(
                    ":x: You tried to kill " + target.getAsMention() + " but they were in a different dimension!")
                    .queue();
            return false;
        }

        e.getMessage().addReaction(Emoji.fromUnicode(pvpEmoji)).queue();

        bot.getPlayerStats().setInBattle(target, true);
        bot.getPlayerStats().setInBattle(e.getMember(), true);

        EmbedBuilder eb = new EmbedBuilder();
        eb.setTitle("pvp");
        String startString = e.getAuthor().getAsMention() + " is fighting " + target.getAsMention() + "...\n\n";
        eb.getDescriptionBuilder().append(startString);

        eb.appendDescription(target.getAsMention() + ": React with " + FLEE_EMOJI.getFormatted() + " to flee");
        if (canFight(target)) {
            eb.appendDescription(" or " + FIGHT_EMOJI.getFormatted() + " to fight back!");
        }

        eb.appendDescription("\n");
        eb.appendDescription(":warning: This chance will expire "
                + PeelingUtils.formatTimeRelativeFromNow(CONFIRM_WAIT_SECONDS * 1000l) + "\n");

        eb.setColor(bot.color);

        long damage = bot.getHealths().calculateDamage(target, e.getMember(), false, BASE_DAMAGE);

        e.getMessage().replyEmbeds(eb.build()).queue(message -> {

            message.addReaction(FLEE_EMOJI).queue();
            if (canFight(target)) {
                message.addReaction(FIGHT_EMOJI).queue();
            }

            message.addReaction(FLEE_EMOJI).queue((Void ignored) -> {
                EventWaiter eventWaiter = new EventWaiter();
                e.getChannel().getJDA().addEventListener(eventWaiter);

                eventWaiter.waitForEvent(MessageReactionAddEvent.class,
                        e1 -> e1.getMessageId().equals(message.getId()) && e1.getUser().getId().equals(target.getId())
                                && (FLEE_EMOJI.equals(e1.getReaction().getEmoji().asUnicode())
                                        || FIGHT_EMOJI.equals(e1.getReaction().getEmoji().asUnicode())),
                        e1 -> {
                            message.clearReactions().queue();
                            eb.setDescription(startString);

                            // target has a chance to evade the battle entirely
                            if (FLEE_EMOJI.equals(e1.getReaction().getEmoji().asUnicode())) {
                                if (Math.random() < FLEE_CHANCE) {
                                    eb.appendDescription(FLEE_EMOJI.getFormatted() + target.getAsMention()
                                            + " Managed to escape!\n");
                                    message.editMessageEmbeds(eb.build()).queueAfter(1, TimeUnit.SECONDS, m -> {
                                        m.editMessageEmbeds(eb.build()).queue();
                                        endFight(target, e.getMember());
                                    });
                                    return;

                                } else {
                                    // fight happens anyway, if they can fight they will fight second
                                    eb.appendDescription(
                                            ":x:" + target.getAsMention() + " tried running away but failed!\n\n");
                                    message.editMessageEmbeds(eb.build()).queueAfter(1, TimeUnit.SECONDS, m1 -> {
                                        fightBack(m1, e.getMember(), target, damage, eb);
                                    });
                                    return;
                                }
                            }

                            // target gets to fight first then attacker fights
                            if (FIGHT_EMOJI.equals(e1.getReaction().getEmoji().asUnicode()) && canFight(target)) {
                                eb.appendDescription(FIGHT_EMOJI.getFormatted() + target.getAsMention()
                                        + " Anticipated the attack and got the first strike\n");
                                message.editMessageEmbeds(eb.build()).queueAfter(1, TimeUnit.SECONDS, m1 -> {
                                    fightBack(m1, target, e.getMember(), damage, eb);
                                });
                                return;
                            }

                            // attacker gets an attack and thats it
                            addFightMessage(message, target, e.getMember(), eb, damage, null);
                        }, CONFIRM_WAIT_SECONDS, TimeUnit.SECONDS, () -> {
                            message.clearReactions().queue();
                            eb.setDescription(startString);
                            message.editMessageEmbeds(eb.build()).queueAfter(1, TimeUnit.SECONDS, m -> {
                                // attacker gets an attack (ambush)
                                addFightMessage(m, target, e.getMember(), eb, damage, null);
                            });
                        });
            });
        });
        return true;
    }

    public void fightBack(Message message, Member target, Member agressor, long attackerDamage, EmbedBuilder eb) {
        long damage = bot.getHealths().calculateDamage(agressor, target, false, BASE_DAMAGE);

        addFightMessage(message, agressor, target, eb, damage, m -> {
            addFightMessage(message, target, agressor, eb, attackerDamage, null);
        });
    }

    public void addFightMessage(Message message, Member target, Member attacker, EmbedBuilder eb, long damage,
            Consumer<Message> callback) {

        String damageString = " (" + PlayerHealths.getHPString(-damage) + ")";

        String swordEmoji = bot.getSword(attacker).getEmoji();
        String deathMessage = swordEmoji + target.getAsMention() + " was slain by " + attacker.getAsMention()
                + damageString;
        long hp = bot.getHealths().damage(message, target, damage, deathMessage);

        if (hp <= 0) {
            endFight(target, attacker);
            return;
        }

        eb.appendDescription(
                swordEmoji + attacker.getAsMention() + " attacked " + target.getAsMention() + damageString + "\n");

        if (callback != null) {
            message.editMessageEmbeds(eb.build()).queue(callback);
        } else {
            eb.appendDescription("\n" + target.getAsMention() + " is now on " + bot.getHealths().getHPString(target));
            message.editMessageEmbeds(eb.build()).queue();
            endFight(target, attacker);
        }
        return;
    }

    private void endFight(Member target, Member attacker) {
        bot.getPlayerStats().setInBattle(target, false);
        bot.getPlayerStats().setInBattle(attacker, false);
    }

    public boolean canFight(Member member) {
        return bot.getSword(member).getLevel() != 0;
    }
}