package hdvtdev.blockAndSeek.roulette;

import hdvtdev.blockAndSeek.BlockAndSeek;
import hdvtdev.blockAndSeek.BlockAndSeekMap;
import hdvtdev.blockAndSeek.Localization;
import org.bukkit.Bukkit;
import org.bukkit.Sound;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.InventoryHolder;
import org.bukkit.inventory.ItemStack;
import org.bukkit.scheduler.BukkitRunnable;
import org.bukkit.scheduler.BukkitTask;
import org.jetbrains.annotations.ApiStatus;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public final class RouletteCreator implements InventoryHolder {


    private static final int[] slots = {3, 5, 7, 12, 14, 16, 21, 23, 25, 30, 32, 34, 39, 41, 43};
    private static final int[] midSlots = {21, 23, 25};
    private static final Random random = new Random();

    private final Inventory roulette;
    private Task task;
    private volatile Boolean closedByPlayer = true;

    public RouletteCreator(@NotNull Player player, List<BlockAndSeekMap.Block> blocks) {
        roulette = Bukkit.createInventory(this, 45, Localization.getComponent(player, "roulette-title"));
        this.createUnoptimizedRoulette(roulette, player, blocks);
    }

    public @NotNull Task getTask() {
        return task;
    }

    public @Nullable Boolean isClosedByPlayer() {
        return closedByPlayer;
    }

    @Override
    public @NotNull Inventory getInventory() {
        return roulette;
    }

    public void closeInventoryBySystem() {
        closedByPlayer = false;
        roulette.close();
    }

    public void closeInventory() {
        closedByPlayer = null;
        roulette.close();
    }

    public ItemStack randomPropItem() {
        return roulette.getItem(slots[random.nextInt(0, 15)]);
    }

    public ItemStack randomMidPropItem() {
        return roulette.getItem(midSlots[random.nextInt(0, 3)]);
    }

    @ApiStatus.Experimental
    private void createUnoptimizedRoulette(Inventory gui, Player player, List<BlockAndSeekMap.Block> blocks) {

        BukkitTask rouletteTask = new BukkitRunnable() {

            final RouletteGenerator rouletteGenerator = new RouletteGenerator(blocks);

            final List<RouletteList<ItemStack>> rows = List.of(
                    new RouletteList<>(rouletteGenerator.getRandomRow(15)),
                    new RouletteList<>(rouletteGenerator.getRandomRow(15)),
                    new RouletteList<>(rouletteGenerator.getRandomRow(15))
            );


            final List<ItemStack[]> items;

            {
                List<ItemStack[]> rawItems = new ArrayList<>();
                for (int j = 0; j < 3; j++) {
                    ItemStack[] itemStacks = new ItemStack[5];
                    for (int l = 0; l < 5; l++) {
                        itemStacks[l] = rows.get(j).next();
                    }
                    rawItems.add(j, itemStacks);
                }
                items = rawItems;
            }

            final long startTime = System.currentTimeMillis();
            double currentSpeed = 0;
            int i = 0;


            @Override
            public void run() {

                long now = System.currentTimeMillis();
                double elapsed = (now - startTime) / 1000.0;

                if (elapsed >= 5) {
                    this.cancel();
                }

                double speed;
                if (elapsed < 2) speed = 1.0;
                else if (elapsed < 2.2) speed = 0.8;
                else if (elapsed < 2.4) speed = 0.6;
                else if (elapsed < 2.6) speed = 0.5;
                else if (elapsed < 2.8) speed = 0.4;
                else if (elapsed < 3) speed = 0.33;
                else if (elapsed < 3.2) speed = 0.28;
                else if (elapsed < 3.5) speed = 0.22;
                else if (elapsed < 3.8) speed = 0.15;
                else speed = 0.1;

                task(speed);

                i++;
            }

            private void task(double speed) {
                if (currentSpeed >= 1) {
                    currentSpeed = 0;
                    for (int j = 0; j < 5; j++) {
                        gui.setItem(3 + j * 9, items.getFirst()[j]);
                        gui.setItem(5 + j * 9, items.get(1)[j]);
                        gui.setItem(7 + j * 9, items.get(2)[j]);
                    }

                    player.playSound(player.getLocation(), Sound.UI_BUTTON_CLICK, 0.5f, 2f);

                    for (int j = 4; j >= 1; j--) {
                        items.getFirst()[j] = items.getFirst()[j - 1];
                        items.get(1)[j] = items.get(1)[j - 1];
                        items.get(2)[j] = items.get(2)[j - 1];
                    }

                    items.getFirst()[0] = rows.getFirst().next();
                    items.get(1)[0] = rows.get(1).next();
                    items.get(2)[0] = rows.get(2).next();
                } else currentSpeed += speed;

            }

        }.runTaskTimer(BlockAndSeek.getInstance(), 0, 1);


        task = new Task(rouletteTask, Bukkit.getScheduler().runTaskLater(BlockAndSeek.getInstance(), this::closeInventoryBySystem, 300));

        player.openInventory(gui);
    }

    public record Task(BukkitTask rouletteTask, BukkitTask autoCloseTask) {
        public void cancelBoth() {
            rouletteTask.cancel();
            autoCloseTask.cancel();
        }
    }


}