package net.uomc.mineshaft.farm;

import static net.uomc.mineshaft.PlayerHealths.HP_EMOJI;

import java.awt.Color;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicLong;
import java.util.stream.Stream;

import com.mouldycheerio.dbot.CustomBot;
import com.mouldycheerio.dbot.commands.CommandDetails;
import com.mouldycheerio.dbot.commands.CommandFail;
import com.mouldycheerio.dbot.commands.DetailedCommand;
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.events.message.MessageReceivedEvent;
import net.uomc.mineshaft.Mineshaft;
import net.uomc.mineshaft.MineshaftItem;

public class CampfireCommand extends DetailedCommand {

    private static final Color COMMAND_COLOUR = PeelingUtils.hex2Rgb("#a45802");
    private static final String COMMAND_TITLE = "Campfire";
    private static final String COMMAND_IMAGE = "https://minecraft.wiki/images/Campfire_%28S%29_JE2_BE2.gif";
    public static final int ITEMS_PER_CAMPFIRE = 4;
    public static final long POTATO_COOKING_TIME = 1000l * 40l;
    public static final long FISH_COOKING_TIME = 1000l * 90l;

    Mineshaft bot;
    List<Campfire> farms;

    public CampfireCommand(Mineshaft bot) {
        setCommandDetails(CommandDetails.from("campfire", "cook your food", "farm"));
        this.bot = bot;

        farms = new ArrayList<>();
        farms.add(new Campfire(bot, MineshaftItem.FISH, MineshaftItem.COOKED_FISH, FISH_COOKING_TIME));
        farms.add(new Campfire(bot, MineshaftItem.POTATO, MineshaftItem.BAKED_POTATO, POTATO_COOKING_TIME));

        bot.getCommandController().addCommand("cook", (e, b, args) -> {
            execute(e, bot, Stream.concat(Stream.of("cook"), Arrays.stream(args)).toArray(String[]::new));
        });
    }

    @Override
    public void execute(MessageReceivedEvent e, CustomBot b, String[] args) throws CommandFail {
        Member m = e.getMember();
        List<String> argList = Arrays.asList(args);

        long campfires = bot.getItem(m, MineshaftItem.CAMPFIRE);

        if (campfires < 1) {
            b.sendErrorMessage(e, ":x: You need to have at least **"
                    + bot.getItem(MineshaftItem.CAMPFIRE).prettyValue(1)
                    + "** to use this!");
            return;
        }

        update(m);

        if (args.length > 1 && "cook".equalsIgnoreCase(args[0])) {
            if (!cook(e, argList))
                bot.sendErrorMessage(e, String.format(":x: Usage `%scook [potato|fish] [amount] `", bot.getPrefixManager().getPrefix(e.getGuild())));
            return;
        }

        StringBuilder description = new StringBuilder();
        description.append(String.format("This is your campfire. You currently have %s\nUse `%scook [potato|fish] [amount]` to cook your food.\n\n",
                    bot.prettyValue(MineshaftItem.CAMPFIRE, campfires),
                    bot.getPrefixManager().getPrefix(e.getGuild())
                    ));

        Map<MineshaftItem, Long> award = new HashMap<>();

        List<String> cooking = new ArrayList<>();
        AtomicLong waitingAmount = new AtomicLong();

        // remove items if there are too many items for the num of campfires
        //
        long already = farms.stream().mapToLong(f -> f.getPlanted(m) + f.getQuantity(m)).sum();
        if (already > campfires * ITEMS_PER_CAMPFIRE) {
            AtomicLong toRemove = new AtomicLong(already - (campfires * ITEMS_PER_CAMPFIRE));
            while (toRemove.get() > 0) {
                long amountEach = toRemove.get();
                farms.forEach(f -> {
                    long amount = amountEach;
                    if (amount == 0 || toRemove.get() < 1)
                        return; // we already removed enough


                    if (f.getQuantity(m) >= amount) {
                        // count the cooked as removed
                        toRemove.addAndGet(-f.getQuantity(m));
                        return;
                    }

                    if (f.getPlanted(m) < amount) {
                        amount = f.getPlanted(m);

                    }
                    // otherwise remove from planted
                    toRemove.addAndGet(-amount);
                    f.setPlanted(m, f.getPlanted(m) - amount);
                    award.put(f.getItem(), amount);
                });
            }
        }

        // add the cooked items to the award
        //
        farms.forEach(farm -> {
            long cooked = farm.getQuantity(m);
            long waiting = farm.getPlanted(m);

            if (cooked > 0) {
                award.put(farm.getCookedItem(), cooked);
                farm.setQuantity(m, 0);
                cooked = 0;
            }

            if (waiting < 1)
                return;

            cooking.add(String.format("%s%s", waiting, bot.getItem(farm.getItem()).getSymbol()));
            waitingAmount.addAndGet(waiting);
        });


        if (waitingAmount.get() == 0) {
            description.append("*You have nothing on your campfire*\n");
        } else {
            description.append("You are currently cooking: " + String.join(",", cooking) + "\n");
        }

        if (award.size() > 0) {
            description.append("\n");
            description.append(bot.createItemList(award, "+%s"));
        }

        EmbedBuilder em = new EmbedBuilder();
        em.setTitle(COMMAND_TITLE);
        em.setThumbnail(COMMAND_IMAGE);
        em.setDescription(description);
        em.setColor(COMMAND_COLOUR);

        bot.addItems(m, award);

        if (campfires <= 1) {
            em.setFooter(EmojiParser.parseToUnicode(":bulb:") + "Get more campfires to cook more food at a time");
        } else {
            em.setFooter(EmojiParser.parseToUnicode(":bulb:") + String.format("Cooking food increases the amount of %s it gives when you %seat it.", "HP", bot.getPrefixManager().getPrefix(e.getGuild())));
        }

        e.getMessage().replyEmbeds(em.build()).queue();
    }

    public boolean cook(MessageReceivedEvent e, List<String> args) {
        if (args.size() > 3)
            return false;

        Optional<String> resourceName = args.stream().filter(s -> !s.equalsIgnoreCase("all") && !s.equalsIgnoreCase("cook") && !PeelingUtils.isLong(s)).findFirst();
        if (resourceName.isEmpty())
            return false;

        MineshaftItem item = MineshaftItem.valueOf(resourceName.get().toUpperCase());
        if (item == null) {
            bot.sendErrorMessage(e, ":x: Please provide a valid item!");
            return true;
        }

        long campfires = bot.getItem(e.getMember(), MineshaftItem.CAMPFIRE);

        long already = farms.stream().mapToLong(f -> f.getPlanted(e.getMember()) + f.getQuantity(e.getMember())).sum();

        long q = 0;
        Optional<String> all = args.stream().filter(s -> s.equals("all")).findFirst();
        if (all.isEmpty()) {
            Optional<Long> quantity = args.stream().filter(s -> PeelingUtils.isLong(s)).map(s -> Long.parseLong(s)).findFirst();
            if (quantity.isEmpty())
                return false;

            q = Math.abs(quantity.get());
        } else {
            q = Math.min(bot.getItem(item).get(e.getMember()), (campfires * ITEMS_PER_CAMPFIRE) - already ) ;
        }


        if (already + q > campfires * ITEMS_PER_CAMPFIRE) {
            bot.sendErrorMessage(e, String.format(":x: You can only have %s items cooking at the same time!", campfires * ITEMS_PER_CAMPFIRE));
            return true;
        }

        Optional<Campfire> farm = farms.stream().filter(f -> f.getItem() == item).findFirst();
        if (farm.isEmpty()) {
            bot.sendErrorMessage(e, ":x: This item cannot be cooked");
            return true;
        }

        if (q > bot.getItem(item).get(e.getMember())) {
            bot.sendErrorMessage(e, ":x: You dont have enough " + bot.getItem(item).getSymbol());
            return true;
        }

        if (farm.get().getPlanted(e.getMember()) == 0) {
            farm.get().setNextUpdate(e.getMember(), System.currentTimeMillis() + farm.get().getCookingTime());
        }

        bot.removeItem(e.getMember(), item, q);
        farm.get().setPlanted(e.getMember(), farm.get().getPlanted(e.getMember()) + q);

        bot.sendSuccessMessage(e, String.format("You put %s on your campfire%s! Come back later when they have finished cooking", bot.getItem(item).prettyValue(q), campfires > 1 ? "s" : ""));
        return true;
    }

    public void update(Member m) {
        farms.forEach(farm -> {
            update(farm, m);
        });
    }

    public void update(Campfire farm, Member m) {
        long next = farm.getNextUpdate(m);
        long now = System.currentTimeMillis();
        if (next == 0) {
            next = now;
        }

        if (next > now)
            return;

        long since = now - next;
        long updates = since / farm.getCookingTime();
        //System.out.printf("[farm %s] updates is %d\n", farm.getItem(), updates);

        long campfires = bot.getItem(m, MineshaftItem.CAMPFIRE);

        long planted = farm.getPlanted(m);

        if (planted > 0) {
            long toCook = (campfires * updates);
            if (toCook > planted) {
                toCook = planted;
            }

            farm.setQuantity(m, farm.getQuantity(m) + toCook);
            farm.setPlanted(m, planted - toCook);
        }
        farm.setNextUpdate(m, farm.getNextUpdate(m) + farm.getCookingTime()*updates);
    }
}